Date   

Re: Pluto QO-100 and SDR Radio- changing ref frequency question

Siegfried Jackstien
 

on qo100 it is all not that problmatic ... receive sensitivity comes from the lnb and on tx hopefully the ampifier chain does some filtering

if you use the leo to send 40 megs to the pluto it should be fine

signal is clean enought for that but pay attention on the level to trx chip ... i have one pluto here with a "cooked" reference in (tooo high level used)

to be really safe i would install two diodes in antiparallel

that clamps the level to plusminus 0.6 or to 1.2v p/p (exact what is needed)

...

for all bands you need filters (if you want to build a multiband rig like the langstone) cause all sdr receive (and transmit) also on the harmonics


its not a waste to use one pluto only for qo100 ... just buy another one for another setup ;-)

or ... one pluto is never enough hi hi


greetz sigi dg9bfc


Am 12.04.2021 um 10:14 schrieb Conrad, PA5Y:

Yes, that is OK if you only use the Pluto for QO-100 but that seems to be quite a waste ūüôā¬†

Maybe you go on other bands where there are really big signals. What about TX spurs? Did you check that?  As long as these are below the noise of QO-100 then no problem for that application.

I saw spurs from the Leo Bodnar so for LO usage I would be hesitant. The effect of these spurs depends on the performance of the Pluto synth.

Regards

Conrad PA5Y




From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Simon Brown via groups.io <simon@...>
Sent: 12 April 2021 12:01
To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>
Subject: Re: [SDR-Radio] Pluto QO-100 and SDR Radio- changing ref frequency question
 

Conrad,

 

For QO-100 where a very strong signal has 40dB SNR Leo Bodnar is fine.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Conrad, PA5Y
Sent: 12 April 2021 08:40
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto QO-100 and SDR Radio- changing ref frequency question

 

The Leo Bodnar GPSDO has reasonable PN, I have some plots that I did with an FSUP, however there are a number of spurs so I would not recommend it for direct LO usage. If you were to make a crystal filter for it then it would be good enough for sure.

 

Here is a plot at 10MHz, it will be similar at 40MHz I had spur cancellation active on the FSUP but there are some spurs, if I have time this evening I will get a screen grab from my Perseus. I don't have access to the FSUP at the moment.

 

Regards

 

Conrad PA5Y

 

 

 


From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Chris Wilson via groups.io <chris@...>
Sent: 12 April 2021 01:41
To: Siegfried Jackstien <main@SDR-Radio.groups.io>
Subject: Re: [SDR-Radio] Pluto QO-100 and SDR Radio- changing ref frequency question

 

Hello Siegfried,

 Friday, April 9, 2021

 Thanks again Sigi. Would a Leo Bodnar dual output device be adequate, phase noise wise?


Best regards,
 Chris    2E0ILY       mailto:chris@...


SJ> 40 megs gives best signal quality ... and if you add a tcxo with 40 megs
SJ> ... use one with LOW PHASE NOISE

SJ> same when using an external reference ... low phase noise and jitter is
SJ> needed

SJ> greetz sigi dg9bfc

SJ> Am 09.04.2021 um 12:13 schrieb Chris Wilson:
>> Hello Siegfried,

>>   Friday, April 9, 2021

>>   That's a good explanation to jdow, and one even I believe I have understood, thanks Sigi.


>> Best regards,
>>   Chris    2E0ILY       mailto:chris@...


>> SJ> the fpga has its own clock

>> SJ> the 40 mhz is the reference of the tranceiver chip not the fpga
>> SJ>
>> SJ> it is for the pll of the mixer(s) in the trx chip ... so it
>> SJ> influeces frequency, spurii etc but not how fast the fpga is       clocked
>> SJ>
>> SJ> there are 3 clocks inside pluto
>> SJ>
>> SJ> 24 megs for usb chip
>> SJ>
>> SJ> 33.333 megs for fpga
>> SJ>
>> SJ> 40 megs for the trx chip
>> SJ>
>> SJ> change of reference for trx chip will not influence the fpga
>> SJ>
>> SJ> now clear??
>> SJ>
>> SJ> dg9bfc sigi
>> SJ>
>> SJ>
>> SJ> ps 40 megs will give a cleaner signal as 10 megs (fewer birdies   and fewer spurii)
>> SJ>
>> SJ>
>> SJ> Am 09.04.2021 um 09:25 schrieb jdow:
>> SJ>
>> SJ>
>> SJ> I am not sure I understand what you mean         by your question.

>> SJ> The question is whether the clock rate due to a crystal change
>> SJ> to a 10 MHz or an external clock rate of 10 MHz will affect the
>> SJ> ability of the FPGA to deliver the same performance as you see
>> SJ> when 40 MHz is used. For that matter what might happen if you
>> SJ> use a clock rate of precisely 33,554,432 Hz. (2^25) I suspect
>> SJ> the whole chip will slow down significantly at a lower crystal     or external clock input.

>> SJ> {^_^}

>> SJ> On 20210408 23:41:01, Siegfried         Jackstien wrote:

>> SJ> it is the clock of the transceiver chip not the cpu (fpga)        ...

>> SJ> dg9bfc sigi

>> SJ> Am 08.04.2021 um 19:47 schrieb           jdow:

>> SJ> If the same sample rates come out of             the Pluto it
>> SJ> should make no difference what the system clock             is,
>> SJ> should it? It's unclear to me whether setting Pluto's
>> SJ> clock to say 10 MHz is compensated for somewhere within
>> SJ> Pluto or not. (Does the internal CPU run at 10 MHz instead         of 40 MHz, for example?)

>> SJ> {^_^}

>> SJ> On 20210408 08:59:25, Simon Brown             wrote:
>> SJ> Well,

>> SJ> Let's see, at the moment SDR Console only knows about 40Mhz.

>> SJ> Simon Brown, G4ELI
>> SJ> https://www.sdr-radio.com-----Original Message-----
>> SJ> From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>On Behalf Of Chris
>> SJ> Wilson
>> SJ> Sent: 08 April 2021 14:53
>> SJ> To: Simon Brown <main@SDR-Radio.groups.io>Subject: Re:
>> SJ> [SDR-Radio] Pluto QO-100 and SDR Radio- changing ref frequency
>> SJ> question

>> SJ> Hello Simon,

>> SJ>  Thursday, April 8, 2021

>> SJ>  Thanks Simon, my take, which may very well be wrong, is you can inject most
>> SJ> any frequency into the Pluto instead of using the stock xtal oscillator,
>> SJ> (you remove, or bypass the xtal oscillator), and in the firmware you tell it
>> SJ> what new frequency you are injecting and it does "magic digital things" to
>> SJ> use the new frequency.

>> SJ> My hopefully soon to arrive set up from the Czech Republic sends 25Mhz
>> SJ> through a special Bias T to the Pluto, derived from a 10MHz GPS locked
>> SJ> source. It also sends this to the LNB to lock that.

>> SJ> I am confused whether SDR Radio needs to be told of this or not, somewhere
>> SJ> in your great software's extensive menus was mention of the 40MHz reference,
>> SJ> although I can't just find it again right now, which worried me as to
>> SJ> whether it would be happy with the Pluto receiving a 25MHz source. It did
>> SJ> not appear that changing the 40MHz figure was possible...

>> SJ> Going to take a Paracetamol and reflect :)


>> SJ> Best regards,
>> SJ>  Chris    2E0ILY mailto:chris@...> Chris,

>> SB>> I *think* the internal oscillator is always 40MHz, your LNB may use
>> SB>> 25MHz in which case the software will not need changing.

>> SB>> Simon Brown, G4ELI
>> SB>> https://www.sdr-radio.comSB> -----Original Message-----
>> SB>> From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>On Behalf
>> SB>> Of Chris Wilson
>> SB>> Sent: 08 April 2021 13:44
>> SB>> To: main@...> Subject: [SDR-Radio] Pluto QO-100 and SDR Radio- changing ref
>> SB>> frequency question

>> SB>> 08 April 2021


>> SB>> If I change the reference frequency for my PlutoSDR to allow locking
>> SB>> it to say an external  25 MHz GPS locked source, will SDR Radio
>> SJ> accommodate this?
>> SB>> I see no way to change from the stock 40 MHz ref frequency in one of
>> SB>> SDR Radio's menus. Bear  with me please, I am new to this....Thanks.



>> SB>> --


>> SB>> Best regards,
>> SB>>  Chris mailto:chris@...



>> SJ>








SJ>







--
- + - + -
Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.


Re: Pluto QO-100 and SDR Radio- changing ref frequency question

Conrad, PA5Y
 

Yes, that is OK if you only use the Pluto for QO-100 but that seems to be quite a waste ūüôā¬†

Maybe you go on other bands where there are really big signals. What about TX spurs? Did you check that?  As long as these are below the noise of QO-100 then no problem for that application.

I saw spurs from the Leo Bodnar so for LO usage I would be hesitant. The effect of these spurs depends on the performance of the Pluto synth.

Regards

Conrad PA5Y




From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Simon Brown via groups.io <simon@...>
Sent: 12 April 2021 12:01
To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>
Subject: Re: [SDR-Radio] Pluto QO-100 and SDR Radio- changing ref frequency question
 

Conrad,

 

For QO-100 where a very strong signal has 40dB SNR Leo Bodnar is fine.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Conrad, PA5Y
Sent: 12 April 2021 08:40
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto QO-100 and SDR Radio- changing ref frequency question

 

The Leo Bodnar GPSDO has reasonable PN, I have some plots that I did with an FSUP, however there are a number of spurs so I would not recommend it for direct LO usage. If you were to make a crystal filter for it then it would be good enough for sure.

 

Here is a plot at 10MHz, it will be similar at 40MHz I had spur cancellation active on the FSUP but there are some spurs, if I have time this evening I will get a screen grab from my Perseus. I don't have access to the FSUP at the moment.

 

Regards

 

Conrad PA5Y

 

 

 


From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Chris Wilson via groups.io <chris@...>
Sent: 12 April 2021 01:41
To: Siegfried Jackstien <main@SDR-Radio.groups.io>
Subject: Re: [SDR-Radio] Pluto QO-100 and SDR Radio- changing ref frequency question

 

Hello Siegfried,

 Friday, April 9, 2021

 Thanks again Sigi. Would a Leo Bodnar dual output device be adequate, phase noise wise?


Best regards,
 Chris    2E0ILY       mailto:chris@...


SJ> 40 megs gives best signal quality ... and if you add a tcxo with 40 megs
SJ> ... use one with LOW PHASE NOISE

SJ> same when using an external reference ... low phase noise and jitter is
SJ> needed

SJ> greetz sigi dg9bfc

SJ> Am 09.04.2021 um 12:13 schrieb Chris Wilson:
>> Hello Siegfried,

>>   Friday, April 9, 2021

>>   That's a good explanation to jdow, and one even I believe I have understood, thanks Sigi.


>> Best regards,
>>   Chris    2E0ILY       mailto:chris@...


>> SJ> the fpga has its own clock

>> SJ> the 40 mhz is the reference of the tranceiver chip not the fpga
>> SJ>
>> SJ> it is for the pll of the mixer(s) in the trx chip ... so it
>> SJ> influeces frequency, spurii etc but not how fast the fpga is       clocked
>> SJ>
>> SJ> there are 3 clocks inside pluto
>> SJ>
>> SJ> 24 megs for usb chip
>> SJ>
>> SJ> 33.333 megs for fpga
>> SJ>
>> SJ> 40 megs for the trx chip
>> SJ>
>> SJ> change of reference for trx chip will not influence the fpga
>> SJ>
>> SJ> now clear??
>> SJ>
>> SJ> dg9bfc sigi
>> SJ>
>> SJ>
>> SJ> ps 40 megs will give a cleaner signal as 10 megs (fewer birdies   and fewer spurii)
>> SJ>
>> SJ>
>> SJ> Am 09.04.2021 um 09:25 schrieb jdow:
>> SJ>
>> SJ>
>> SJ> I am not sure I understand what you mean         by your question.

>> SJ> The question is whether the clock rate due to a crystal change
>> SJ> to a 10 MHz or an external clock rate of 10 MHz will affect the
>> SJ> ability of the FPGA to deliver the same performance as you see
>> SJ> when 40 MHz is used. For that matter what might happen if you
>> SJ> use a clock rate of precisely 33,554,432 Hz. (2^25) I suspect
>> SJ> the whole chip will slow down significantly at a lower crystal     or external clock input.

>> SJ> {^_^}

>> SJ> On 20210408 23:41:01, Siegfried         Jackstien wrote:

>> SJ> it is the clock of the transceiver chip not the cpu (fpga)        ...

>> SJ> dg9bfc sigi

>> SJ> Am 08.04.2021 um 19:47 schrieb           jdow:

>> SJ> If the same sample rates come out of             the Pluto it
>> SJ> should make no difference what the system clock             is,
>> SJ> should it? It's unclear to me whether setting Pluto's
>> SJ> clock to say 10 MHz is compensated for somewhere within
>> SJ> Pluto or not. (Does the internal CPU run at 10 MHz instead         of 40 MHz, for example?)

>> SJ> {^_^}

>> SJ> On 20210408 08:59:25, Simon Brown             wrote:
>> SJ> Well,

>> SJ> Let's see, at the moment SDR Console only knows about 40Mhz.

>> SJ> Simon Brown, G4ELI

>> SJ> https://www.sdr-radio.com-----Original Message-----
>> SJ> From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>On Behalf Of Chris
>> SJ> Wilson
>> SJ> Sent: 08 April 2021 14:53
>> SJ> To: Simon Brown <main@SDR-Radio.groups.io>Subject: Re:
>> SJ> [SDR-Radio] Pluto QO-100 and SDR Radio- changing ref frequency
>> SJ> question

>> SJ> Hello Simon,

>> SJ>  Thursday, April 8, 2021

>> SJ>  Thanks Simon, my take, which may very well be wrong, is you can inject most
>> SJ> any frequency into the Pluto instead of using the stock xtal oscillator,
>> SJ> (you remove, or bypass the xtal oscillator), and in the firmware you tell it
>> SJ> what new frequency you are injecting and it does "magic digital things" to
>> SJ> use the new frequency.

>> SJ> My hopefully soon to arrive set up from the Czech Republic sends 25Mhz
>> SJ> through a special Bias T to the Pluto, derived from a 10MHz GPS locked
>> SJ> source. It also sends this to the LNB to lock that.

>> SJ> I am confused whether SDR Radio needs to be told of this or not, somewhere
>> SJ> in your great software's extensive menus was mention of the 40MHz reference,
>> SJ> although I can't just find it again right now, which worried me as to
>> SJ> whether it would be happy with the Pluto receiving a 25MHz source. It did
>> SJ> not appear that changing the 40MHz figure was possible...

>> SJ> Going to take a Paracetamol and reflect :)


>> SJ> Best regards,
>> SJ>  Chris    2E0ILY mailto:chris@...> Chris,

>> SB>> I *think* the internal oscillator is always 40MHz, your LNB may use
>> SB>> 25MHz in which case the software will not need changing.

>> SB>> Simon Brown, G4ELI
>> SB>> https://www.sdr-radio.comSB> -----Original Message-----
>> SB>> From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>On Behalf
>> SB>> Of Chris Wilson
>> SB>> Sent: 08 April 2021 13:44
>> SB>> To: main@...> Subject: [SDR-Radio] Pluto QO-100 and SDR Radio- changing ref
>> SB>> frequency question

>> SB>> 08 April 2021


>> SB>> If I change the reference frequency for my PlutoSDR to allow locking
>> SB>> it to say an external  25 MHz GPS locked source, will SDR Radio
>> SJ> accommodate this?
>> SB>> I see no way to change from the stock 40 MHz ref frequency in one of
>> SB>> SDR Radio's menus. Bear  with me please, I am new to this....Thanks.



>> SB>> --


>> SB>> Best regards,
>> SB>>  Chris mailto:chris@...



>> SJ>








SJ>







--
- + - + -
Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.


Re: Pluto QO-100 and SDR Radio- changing ref frequency question

Simon Brown
 

Conrad,

 

For QO-100 where a very strong signal has 40dB SNR Leo Bodnar is fine.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Conrad, PA5Y
Sent: 12 April 2021 08:40
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto QO-100 and SDR Radio- changing ref frequency question

 

The Leo Bodnar GPSDO has reasonable PN, I have some plots that I did with an FSUP, however there are a number of spurs so I would not recommend it for direct LO usage. If you were to make a crystal filter for it then it would be good enough for sure.

 

Here is a plot at 10MHz, it will be similar at 40MHz I had spur cancellation active on the FSUP but there are some spurs, if I have time this evening I will get a screen grab from my Perseus. I don't have access to the FSUP at the moment.

 

Regards

 

Conrad PA5Y

 

 

 


From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Chris Wilson via groups.io <chris@...>
Sent: 12 April 2021 01:41
To: Siegfried Jackstien <main@SDR-Radio.groups.io>
Subject: Re: [SDR-Radio] Pluto QO-100 and SDR Radio- changing ref frequency question

 

Hello Siegfried,

 Friday, April 9, 2021

 Thanks again Sigi. Would a Leo Bodnar dual output device be adequate, phase noise wise?


Best regards,
 Chris    2E0ILY       mailto:chris@...


SJ> 40 megs gives best signal quality ... and if you add a tcxo with 40 megs
SJ> ... use one with LOW PHASE NOISE

SJ> same when using an external reference ... low phase noise and jitter is
SJ> needed

SJ> greetz sigi dg9bfc

SJ> Am 09.04.2021 um 12:13 schrieb Chris Wilson:
>> Hello Siegfried,

>>   Friday, April 9, 2021

>>   That's a good explanation to jdow, and one even I believe I have understood, thanks Sigi.


>> Best regards,
>>   Chris    2E0ILY       mailto:chris@...


>> SJ> the fpga has its own clock

>> SJ> the 40 mhz is the reference of the tranceiver chip not the fpga
>> SJ>
>> SJ> it is for the pll of the mixer(s) in the trx chip ... so it
>> SJ> influeces frequency, spurii etc but not how fast the fpga is       clocked
>> SJ>
>> SJ> there are 3 clocks inside pluto
>> SJ>
>> SJ> 24 megs for usb chip
>> SJ>
>> SJ> 33.333 megs for fpga
>> SJ>
>> SJ> 40 megs for the trx chip
>> SJ>
>> SJ> change of reference for trx chip will not influence the fpga
>> SJ>
>> SJ> now clear??
>> SJ>
>> SJ> dg9bfc sigi
>> SJ>
>> SJ>
>> SJ> ps 40 megs will give a cleaner signal as 10 megs (fewer birdies   and fewer spurii)
>> SJ>
>> SJ>
>> SJ> Am 09.04.2021 um 09:25 schrieb jdow:
>> SJ>
>> SJ>
>> SJ> I am not sure I understand what you mean         by your question.

>> SJ> The question is whether the clock rate due to a crystal change
>> SJ> to a 10 MHz or an external clock rate of 10 MHz will affect the
>> SJ> ability of the FPGA to deliver the same performance as you see
>> SJ> when 40 MHz is used. For that matter what might happen if you
>> SJ> use a clock rate of precisely 33,554,432 Hz. (2^25) I suspect
>> SJ> the whole chip will slow down significantly at a lower crystal     or external clock input.

>> SJ> {^_^}

>> SJ> On 20210408 23:41:01, Siegfried         Jackstien wrote:

>> SJ> it is the clock of the transceiver chip not the cpu (fpga)        ...

>> SJ> dg9bfc sigi

>> SJ> Am 08.04.2021 um 19:47 schrieb           jdow:

>> SJ> If the same sample rates come out of             the Pluto it
>> SJ> should make no difference what the system clock             is,
>> SJ> should it? It's unclear to me whether setting Pluto's
>> SJ> clock to say 10 MHz is compensated for somewhere within
>> SJ> Pluto or not. (Does the internal CPU run at 10 MHz instead         of 40 MHz, for example?)

>> SJ> {^_^}

>> SJ> On 20210408 08:59:25, Simon Brown             wrote:
>> SJ> Well,

>> SJ> Let's see, at the moment SDR Console only knows about 40Mhz.

>> SJ> Simon Brown, G4ELI
>> SJ> https://www.sdr-radio.com-----Original Message-----
>> SJ> From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>On Behalf Of Chris
>> SJ> Wilson
>> SJ> Sent: 08 April 2021 14:53
>> SJ> To: Simon Brown <main@SDR-Radio.groups.io>Subject: Re:
>> SJ> [SDR-Radio] Pluto QO-100 and SDR Radio- changing ref frequency
>> SJ> question

>> SJ> Hello Simon,

>> SJ>  Thursday, April 8, 2021

>> SJ>  Thanks Simon, my take, which may very well be wrong, is you can inject most
>> SJ> any frequency into the Pluto instead of using the stock xtal oscillator,
>> SJ> (you remove, or bypass the xtal oscillator), and in the firmware you tell it
>> SJ> what new frequency you are injecting and it does "magic digital things" to
>> SJ> use the new frequency.

>> SJ> My hopefully soon to arrive set up from the Czech Republic sends 25Mhz
>> SJ> through a special Bias T to the Pluto, derived from a 10MHz GPS locked
>> SJ> source. It also sends this to the LNB to lock that.

>> SJ> I am confused whether SDR Radio needs to be told of this or not, somewhere
>> SJ> in your great software's extensive menus was mention of the 40MHz reference,
>> SJ> although I can't just find it again right now, which worried me as to
>> SJ> whether it would be happy with the Pluto receiving a 25MHz source. It did
>> SJ> not appear that changing the 40MHz figure was possible...

>> SJ> Going to take a Paracetamol and reflect :)


>> SJ> Best regards,
>> SJ>  Chris    2E0ILY mailto:chris@...> Chris,

>> SB>> I *think* the internal oscillator is always 40MHz, your LNB may use
>> SB>> 25MHz in which case the software will not need changing.

>> SB>> Simon Brown, G4ELI
>> SB>> https://www.sdr-radio.comSB> -----Original Message-----
>> SB>> From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>On Behalf
>> SB>> Of Chris Wilson
>> SB>> Sent: 08 April 2021 13:44
>> SB>> To: main@...> Subject: [SDR-Radio] Pluto QO-100 and SDR Radio- changing ref
>> SB>> frequency question

>> SB>> 08 April 2021


>> SB>> If I change the reference frequency for my PlutoSDR to allow locking
>> SB>> it to say an external  25 MHz GPS locked source, will SDR Radio
>> SJ> accommodate this?
>> SB>> I see no way to change from the stock 40 MHz ref frequency in one of
>> SB>> SDR Radio's menus. Bear  with me please, I am new to this....Thanks.



>> SB>> --


>> SB>> Best regards,
>> SB>>  Chris mailto:chris@...



>> SJ>








SJ>







--
- + - + -
Please use https://forum.sdr-radio.com:4499/ when posting questions or problems.


SDR Console, RSPDuo, IC-7100, N1MM & CW Skimmer #rspduo

 

Hi all,

Had fun in the GC contest on QO-100 over the weekend, Had the IC-7100 talking to SDR Console/RSPDuo and the IC-7100 working well. It dawned on  me that running CW Skimmer at the same time would be really good. But, I am having a problem just getting CW Skimmer to talk to SDR Console let alone the other items.

Before I spend more time, can anyone tell me if the full combination is possible to run together i.e SDR Console, RSPDuo, IC-7100, N1MM & CW Skimmer.

Thanks in advance

73

Ian G4GIR


Re: Pluto QO-100 and SDR Radio- changing ref frequency question

Conrad, PA5Y
 

The Leo Bodnar GPSDO has reasonable PN, I have some plots that I did with an FSUP, however there are a number of spurs so I would not recommend it for direct LO usage. If you were to make a crystal filter for it then it would be good enough for sure.

Here is a plot at 10MHz, it will be similar at 40MHz I had spur cancellation active on the FSUP but there are some spurs, if I have time this evening I will get a screen grab from my Perseus. I don't have access to the FSUP at the moment.

Regards

Conrad PA5Y




From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Chris Wilson via groups.io <chris@...>
Sent: 12 April 2021 01:41
To: Siegfried Jackstien <main@SDR-Radio.groups.io>
Subject: Re: [SDR-Radio] Pluto QO-100 and SDR Radio- changing ref frequency question
 
Hello Siegfried,

 Friday, April 9, 2021

 Thanks again Sigi. Would a Leo Bodnar dual output device be adequate, phase noise wise?


Best regards,
 Chris    2E0ILY       mailto:chris@...


SJ> 40 megs gives best signal quality ... and if you add a tcxo with 40 megs
SJ> ... use one with LOW PHASE NOISE

SJ> same when using an external reference ... low phase noise and jitter is
SJ> needed

SJ> greetz sigi dg9bfc

SJ> Am 09.04.2021 um 12:13 schrieb Chris Wilson:
>> Hello Siegfried,

>>   Friday, April 9, 2021

>>   That's a good explanation to jdow, and one even I believe I have understood, thanks Sigi.


>> Best regards,
>>   Chris    2E0ILY       mailto:chris@...


>> SJ> the fpga has its own clock

>> SJ> the 40 mhz is the reference of the tranceiver chip not the fpga
>> SJ>
>> SJ> it is for the pll of the mixer(s) in the trx chip ... so it
>> SJ> influeces frequency, spurii etc but not how fast the fpga is       clocked
>> SJ>
>> SJ> there are 3 clocks inside pluto
>> SJ>
>> SJ> 24 megs for usb chip
>> SJ>
>> SJ> 33.333 megs for fpga
>> SJ>
>> SJ> 40 megs for the trx chip
>> SJ>
>> SJ> change of reference for trx chip will not influence the fpga
>> SJ>
>> SJ> now clear??
>> SJ>
>> SJ> dg9bfc sigi
>> SJ>
>> SJ>
>> SJ> ps 40 megs will give a cleaner signal as 10 megs (fewer birdies   and fewer spurii)
>> SJ>
>> SJ>
>> SJ> Am 09.04.2021 um 09:25 schrieb jdow:
>> SJ>
>> SJ>
>> SJ> I am not sure I understand what you mean         by your question.

>> SJ> The question is whether the clock rate due to a crystal change
>> SJ> to a 10 MHz or an external clock rate of 10 MHz will affect the
>> SJ> ability of the FPGA to deliver the same performance as you see
>> SJ> when 40 MHz is used. For that matter what might happen if you
>> SJ> use a clock rate of precisely 33,554,432 Hz. (2^25) I suspect
>> SJ> the whole chip will slow down significantly at a lower crystal     or external clock input.

>> SJ> {^_^}

>> SJ> On 20210408 23:41:01, Siegfried         Jackstien wrote:

>> SJ> it is the clock of the transceiver chip not the cpu (fpga)        ...

>> SJ> dg9bfc sigi

>> SJ> Am 08.04.2021 um 19:47 schrieb           jdow:

>> SJ> If the same sample rates come out of             the Pluto it
>> SJ> should make no difference what the system clock             is,
>> SJ> should it? It's unclear to me whether setting Pluto's
>> SJ> clock to say 10 MHz is compensated for somewhere within
>> SJ> Pluto or not. (Does the internal CPU run at 10 MHz instead         of 40 MHz, for example?)

>> SJ> {^_^}

>> SJ> On 20210408 08:59:25, Simon Brown             wrote:
>> SJ> Well,

>> SJ> Let's see, at the moment SDR Console only knows about 40Mhz.

>> SJ> Simon Brown, G4ELI

>> SJ> https://www.sdr-radio.com-----Original Message-----
>> SJ> From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>On Behalf Of Chris
>> SJ> Wilson
>> SJ> Sent: 08 April 2021 14:53
>> SJ> To: Simon Brown <main@SDR-Radio.groups.io>Subject: Re:
>> SJ> [SDR-Radio] Pluto QO-100 and SDR Radio- changing ref frequency
>> SJ> question

>> SJ> Hello Simon,

>> SJ>  Thursday, April 8, 2021

>> SJ>  Thanks Simon, my take, which may very well be wrong, is you can inject most
>> SJ> any frequency into the Pluto instead of using the stock xtal oscillator,
>> SJ> (you remove, or bypass the xtal oscillator), and in the firmware you tell it
>> SJ> what new frequency you are injecting and it does "magic digital things" to
>> SJ> use the new frequency.

>> SJ> My hopefully soon to arrive set up from the Czech Republic sends 25Mhz
>> SJ> through a special Bias T to the Pluto, derived from a 10MHz GPS locked
>> SJ> source. It also sends this to the LNB to lock that.

>> SJ> I am confused whether SDR Radio needs to be told of this or not, somewhere
>> SJ> in your great software's extensive menus was mention of the 40MHz reference,
>> SJ> although I can't just find it again right now, which worried me as to
>> SJ> whether it would be happy with the Pluto receiving a 25MHz source. It did
>> SJ> not appear that changing the 40MHz figure was possible...

>> SJ> Going to take a Paracetamol and reflect :)


>> SJ> Best regards,
>> SJ>  Chris    2E0ILY mailto:chris@...> Chris,

>> SB>> I *think* the internal oscillator is always 40MHz, your LNB may use
>> SB>> 25MHz in which case the software will not need changing.

>> SB>> Simon Brown, G4ELI
>> SB>> https://www.sdr-radio.comSB> -----Original Message-----
>> SB>> From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>On Behalf
>> SB>> Of Chris Wilson
>> SB>> Sent: 08 April 2021 13:44
>> SB>> To: main@...> Subject: [SDR-Radio] Pluto QO-100 and SDR Radio- changing ref
>> SB>> frequency question

>> SB>> 08 April 2021


>> SB>> If I change the reference frequency for my PlutoSDR to allow locking
>> SB>> it to say an external  25 MHz GPS locked source, will SDR Radio
>> SJ> accommodate this?
>> SB>> I see no way to change from the stock 40 MHz ref frequency in one of
>> SB>> SDR Radio's menus. Bear  with me please, I am new to this....Thanks.



>> SB>> --


>> SB>> Best regards,
>> SB>>  Chris mailto:chris@...



>> SJ>








SJ>








Re: PC advice

Conrad, PA5Y
 

Hi Sigi aha then you are a good man to know! Is your private email on qrz.com? Of course I use ferrites but maybe there are some other things I can do and I am sure that you can help with that. I will stick with my original proposal as I think that it will be more than enough, also I have to buy 4 monitors! I have found that HP Elite Display E243 do not radiate with display port cables, I already have 2 and they are completely silent on 6m, 2m and 70cms where I do my EME. 

Anyway I will contact you off the list.

Regards

Conrad PA5Y


From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Siegfried Jackstien via groups.io <siegfried.jackstien@...>
Sent: 12 April 2021 01:46
To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>
Subject: Re: [SDR-Radio] PC advice
 

i worked for a company that modded pc to have better screening and filtering (for military uses etc)

a lot of ferrites on cabling ... and unused holes and slits closed with shielding foil

 i just thought about the 2 extra cores ... shielding and adding filters is another thingy and if you want lowest noise modding is needed on near all pc you can buy

greetz sigi dg9bfc

Am 11.04.2021 um 11:49 schrieb Conrad, PA5Y:

Hi Sigi the Lenovo is not so well screened, I know for sure that the Z440 is very well screened so it is safer for my EME activities.

 

Regards

 

Conrad

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Siegfried Jackstien via groups.io
Sent: 10 April 2021 19:55
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] PC advice

 

what about the p410 .. 8 core ... (ok ok 200 bucks more)

dg9bfc sigi

Am 09.04.2021 um 20:16 schrieb Conrad, PA5Y:

Hello all. I am considering buying the following PC.

 

https://www.itsco.de/workstation-hp-z440-intel-six-core-xeon-e5-1650-v4-6x-3-6ghz-24591.html

 

This is a good price over from what I have found so far. Will this do the job? I will have 4 monitors attached.

 

Regards

 

Conrad PA5Y


Re: Can an RTL dongle be made to show correct frequency in the console on QO-100??

Siegfried Jackstien
 

in radio definitions add the 9.75 gig downconverter

in general settings change max frequency to 99.9 gig (another digit to display)

now tune to 10.489 g

done

dg9bfc sigi

ps stabilisation with psk beacon is another thing ... first get the base setup running

Am 11.04.2021 um 23:51 schrieb Chris Wilson:

I got my dish up this weekend and pointed at QO-100. It gives a good signal just using an RTL dongle for RX and alignment and testing. But it's now near 1.00 AM and I have to give up on getting the Console to show anything but around 740 MHz when listening to the satellite. I may well be being dense, but I now need to ask, is it indeed possible to make it show the real frequency? Nothing I have tried changes the displayed frequency at all. I am using a Bull's Eye LNB (LO 9750 MHz, output 739 to 1950 MHz). I made a definition showing down converting, frequency 9011MHz, for example, but nothing changes... Tried many other stabs at this. Thanks.




Can an RTL dongle be made to show correct frequency in the console on QO-100??

Chris Wilson
 

I got my dish up this weekend and pointed at QO-100. It gives a good signal just using an RTL dongle for RX and alignment and testing. But it's now near 1.00 AM and I have to give up on getting the Console to show anything but around 740 MHz when listening to the satellite. I may well be being dense, but I now need to ask, is it indeed possible to make it show the real frequency? Nothing I have tried changes the displayed frequency at all. I am using a Bull's Eye LNB (LO 9750 MHz, output 739 to 1950 MHz). I made a definition showing down converting, frequency 9011MHz, for example, but nothing changes... Tried many other stabs at this. Thanks.


Re: PC advice

Siegfried Jackstien
 

i worked for a company that modded pc to have better screening and filtering (for military uses etc)

a lot of ferrites on cabling ... and unused holes and slits closed with shielding foil

 i just thought about the 2 extra cores ... shielding and adding filters is another thingy and if you want lowest noise modding is needed on near all pc you can buy

greetz sigi dg9bfc

Am 11.04.2021 um 11:49 schrieb Conrad, PA5Y:

Hi Sigi the Lenovo is not so well screened, I know for sure that the Z440 is very well screened so it is safer for my EME activities.

 

Regards

 

Conrad

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Siegfried Jackstien via groups.io
Sent: 10 April 2021 19:55
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] PC advice

 

what about the p410 .. 8 core ... (ok ok 200 bucks more)

dg9bfc sigi

Am 09.04.2021 um 20:16 schrieb Conrad, PA5Y:

Hello all. I am considering buying the following PC.

 

https://www.itsco.de/workstation-hp-z440-intel-six-core-xeon-e5-1650-v4-6x-3-6ghz-24591.html

 

This is a good price over from what I have found so far. Will this do the job? I will have 4 monitors attached.

 

Regards

 

Conrad PA5Y


Re: Pluto QO-100 and SDR Radio- changing ref frequency question

Chris Wilson
 

Hello Siegfried,

Friday, April 9, 2021

Thanks again Sigi. Would a Leo Bodnar dual output device be adequate, phase noise wise?


Best regards,
Chris 2E0ILY mailto:chris@...


SJ> 40 megs gives best signal quality ... and if you add a tcxo with 40 megs
SJ> ... use one with LOW PHASE NOISE

SJ> same when using an external reference ... low phase noise and jitter is
SJ> needed

SJ> greetz sigi dg9bfc

SJ> Am 09.04.2021 um 12:13 schrieb Chris Wilson:
Hello Siegfried,
Friday, April 9, 2021
That's a good explanation to jdow, and one even I believe I have understood, thanks Sigi.

Best regards,
Chris 2E0ILY mailto:chris@...

SJ> the fpga has its own clock
SJ> the 40 mhz is the reference of the tranceiver chip not the fpga
SJ>
SJ> it is for the pll of the mixer(s) in the trx chip ... so it
SJ> influeces frequency, spurii etc but not how fast the fpga is clocked
SJ>
SJ> there are 3 clocks inside pluto
SJ>
SJ> 24 megs for usb chip
SJ>
SJ> 33.333 megs for fpga
SJ>
SJ> 40 megs for the trx chip
SJ>
SJ> change of reference for trx chip will not influence the fpga
SJ>
SJ> now clear??
SJ>
SJ> dg9bfc sigi
SJ>
SJ>
SJ> ps 40 megs will give a cleaner signal as 10 megs (fewer birdies and fewer spurii)
SJ>
SJ>
SJ> Am 09.04.2021 um 09:25 schrieb jdow:
SJ>
SJ>
SJ> I am not sure I understand what you mean by your question.
SJ> The question is whether the clock rate due to a crystal change
SJ> to a 10 MHz or an external clock rate of 10 MHz will affect the
SJ> ability of the FPGA to deliver the same performance as you see
SJ> when 40 MHz is used. For that matter what might happen if you
SJ> use a clock rate of precisely 33,554,432 Hz. (2^25) I suspect
SJ> the whole chip will slow down significantly at a lower crystal or external clock input.
SJ> {^_^}
SJ> On 20210408 23:41:01, Siegfried Jackstien wrote:
SJ> it is the clock of the transceiver chip not the cpu (fpga) ...
SJ> dg9bfc sigi
SJ> Am 08.04.2021 um 19:47 schrieb jdow:
SJ> If the same sample rates come out of the Pluto it
SJ> should make no difference what the system clock is,
SJ> should it? It's unclear to me whether setting Pluto's
SJ> clock to say 10 MHz is compensated for somewhere within
SJ> Pluto or not. (Does the internal CPU run at 10 MHz instead of 40 MHz, for example?)
SJ> {^_^}
SJ> On 20210408 08:59:25, Simon Brown wrote:
SJ> Well,
SJ> Let's see, at the moment SDR Console only knows about 40Mhz.
SJ> Simon Brown, G4ELI
SJ> https://www.sdr-radio.com-----Original Message-----
SJ> From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>On Behalf Of Chris
SJ> Wilson
SJ> Sent: 08 April 2021 14:53
SJ> To: Simon Brown <main@SDR-Radio.groups.io>Subject: Re:
SJ> [SDR-Radio] Pluto QO-100 and SDR Radio- changing ref frequency
SJ> question
SJ> Hello Simon,
SJ> Thursday, April 8, 2021
SJ> Thanks Simon, my take, which may very well be wrong, is you can inject most
SJ> any frequency into the Pluto instead of using the stock xtal oscillator,
SJ> (you remove, or bypass the xtal oscillator), and in the firmware you tell it
SJ> what new frequency you are injecting and it does "magic digital things" to
SJ> use the new frequency.
SJ> My hopefully soon to arrive set up from the Czech Republic sends 25Mhz
SJ> through a special Bias T to the Pluto, derived from a 10MHz GPS locked
SJ> source. It also sends this to the LNB to lock that.
SJ> I am confused whether SDR Radio needs to be told of this or not, somewhere
SJ> in your great software's extensive menus was mention of the 40MHz reference,
SJ> although I can't just find it again right now, which worried me as to
SJ> whether it would be happy with the Pluto receiving a 25MHz source. It did
SJ> not appear that changing the 40MHz figure was possible...
SJ> Going to take a Paracetamol and reflect :)

SJ> Best regards,
SJ> Chris 2E0ILY mailto:chris@...> Chris,
SB>> I *think* the internal oscillator is always 40MHz, your LNB may use
SB>> 25MHz in which case the software will not need changing.
SB>> Simon Brown, G4ELI
SB>> https://www.sdr-radio.comSB> -----Original Message-----
SB>> From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>On Behalf
SB>> Of Chris Wilson
SB>> Sent: 08 April 2021 13:44
SB>> To: main@...> Subject: [SDR-Radio] Pluto QO-100 and SDR Radio- changing ref
SB>> frequency question
SB>> 08 April 2021

SB>> If I change the reference frequency for my PlutoSDR to allow locking
SB>> it to say an external 25 MHz GPS locked source, will SDR Radio
SJ> accommodate this?
SB>> I see no way to change from the stock 40 MHz ref frequency in one of
SB>> SDR Radio's menus. Bear with me please, I am new to this....Thanks.


SB>> --

SB>> Best regards,
SB>> Chris mailto:chris@...


SJ>







SJ>


Re: Connected radio tuning problem

Richard Ebbs
 

Fixed this after a while.
Nothing wrong with the RTL dongle, I checked it against WWV 10MHz, only 18ppm out.
I did notice though, that when I tuned up in frequency on the radio, the SDR tuned down and vice-versa.
In the Definitions and Select Radio options, there is an 'invert spectrum' check box. I ticked both and now the radio/SDRC tuning is spot on.

Hope this may help others trying to use the 1st IF tuning option.

de Richard G0MIE
 


Re: PC advice

Conrad, PA5Y
 

Hi Sigi the Lenovo is not so well screened, I know for sure that the Z440 is very well screened so it is safer for my EME activities.

 

Regards

 

Conrad

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Siegfried Jackstien via groups.io
Sent: 10 April 2021 19:55
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] PC advice

 

what about the p410 .. 8 core ... (ok ok 200 bucks more)

dg9bfc sigi

Am 09.04.2021 um 20:16 schrieb Conrad, PA5Y:

Hello all. I am considering buying the following PC.

 

https://www.itsco.de/workstation-hp-z440-intel-six-core-xeon-e5-1650-v4-6x-3-6ghz-24591.html

 

This is a good price over from what I have found so far. Will this do the job? I will have 4 monitors attached.

 

Regards

 

Conrad PA5Y


Re: Colors On Spectrum and Waterfall ?

rmrrgs <rgsrose@...>
 

Hi,

Thanks for replies.
Really so nice of everyone to help me out will all my questions.
Makes the hobby just so much more enjoyable for me these days.

I thought the colors for the Spectrum and the Waterfall were independently adj.
Didn't realize they are locked together for whatever choice.

Best regards,
stay well,
Bob


Re: PC advice

Conrad, PA5Y
 

Hi Dave, thanks for the info. I will buy it then. It has 32GB RAM already so that will be enough.

 

73

 

Conrad PA5Y

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of David De Coons via groups.io
Sent: 09 April 2021 22:38
To: main@sdr-radio.groups.io
Subject: Re: [SDR-Radio] PC advice

 

Conrad

 

We have run the Z440 HP workstations in our 9-1-1 center driving 4 monitors using two video cards in the workstation. We use 1 TB solid state drives and 16 GB registered ECC ram. The Z440 uses ECC ram in quad channel configuration meaning to get best performance ram modules should be installed in groups of four modules. 

 

We use two NVS510 video cards to drive four monitors, but we have been moving to a single 42‚ÄĚ 4K hdr monitor using display port cable.¬†

 

The workstation is excellent at multitasking as we run quite a few applications simultaneously. 

 

If you need additional ram, I have found good deals on eBay for used working ECC ram. 

 

I have a z420 here I use as my Windows test/development machine. 

 

73

Dave wo2x

Sent from my waxed string and tin cans. 



On Apr 9, 2021, at 4:17 PM, Conrad, PA5Y <g0ruz@...> wrote:

ÔĽŅ

Hello all. I am considering buying the following PC.

 

https://www.itsco.de/workstation-hp-z440-intel-six-core-xeon-e5-1650-v4-6x-3-6ghz-24591.html

 

This is a good price over from what I have found so far. Will this do the job? I will have 4 monitors attached.

 

Regards

 

Conrad PA5Y


Re: Colors On Spectrum and Waterfall ?

jdow
 

The tools->Options and follow your nose to expand on Jim's comment just a tiny bit.
{^_-}

On 20210410 05:05:02, Jim Smith G0OFE wrote:

For the waterfall  Display.. Colour.



================================
Need help with SDR Console? If you have a problem:
Go to https://www.sdr-radio.com/support
Please follow instructions in that link.
===================================
Jim, Bournemouth, Dorset. IO90BR.
Elad FDM-S2, Airspy HF+, SDRPlay and Funcube Dongle SDR Recievers
8-element OP-DES for Band 2, 8-element LFA for 2m, 3-element LFA for 6m, 20m Windom for HF,. Wellbrook 1530 Loop for LF


On 10/04/2021 11:42, rmrrgs wrote:
Hi,

Not important, but would help my eyesight which isn't too great anymore.

I can change the colors on the ribbon by using the "Style" menu on the uppermost, right position.

But I can't seem to change he colors on the Spectrum or Waterfall.

How do I do this, please ?

Bob


Re: Colors On Spectrum and Waterfall ?

Siegfried Jackstien
 

in spectrum you can switch it off (disengage the button "shaded" in spectrum setting)

saves a bit cpu load on a slowish pc

dg9bfc sigi

Am 10.04.2021 um 23:34 schrieb Kriss Kliegle KA1GJU:

Color  (Colour in UK) is located in the Waterfall tab, but affects both waterfall and spectrum:

73 Kriss KA1GJU


Re: Colors On Spectrum and Waterfall ?

Kriss Kliegle KA1GJU
 

Color  (Colour in UK) is located in the Waterfall tab, but affects both waterfall and spectrum:

73 Kriss KA1GJU


Re: PC advice

Allan Isaacs
 

Conrad..

I’m just about to test an ASUS PN40 with 256GB SSD and 8GB of DDR4 RAM

The PN40 was £97, SSD £27 and £32 for the RAM; Windows 10 x64 Pro FOC

Not a great spec but how will it perform with my SDR Play I wonder?

Allan G3PIY

 


From: main@SDR-Radio.groups.io [mailto:main@SDR-Radio.groups.io] On Behalf Of Siegfried Jackstien
Sent: 10 April 2021 18:55
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] PC advice

 

what about the p410 .. 8 core ... (ok ok 200 bucks more)

dg9bfc sigi

Am 09.04.2021 um 20:16 schrieb Conrad, PA5Y:

Hello all. I am considering buying the following PC.

 

https://www.itsco.de/workstation-hp-z440-intel-six-core-xeon-e5-1650-v4-6x-3-6ghz-24591.html

 

This is a good price over from what I have found so far. Will this do the job? I will have 4 monitors attached.

 

Regards

 

Conrad PA5Y

 


Re: PC advice

Siegfried Jackstien
 

what about the p410 .. 8 core ... (ok ok 200 bucks more)

dg9bfc sigi

Am 09.04.2021 um 20:16 schrieb Conrad, PA5Y:

Hello all. I am considering buying the following PC.

 

https://www.itsco.de/workstation-hp-z440-intel-six-core-xeon-e5-1650-v4-6x-3-6ghz-24591.html

 

This is a good price over from what I have found so far. Will this do the job? I will have 4 monitors attached.

 

Regards

 

Conrad PA5Y


Re: Pluto / F5OEO Help Please

Siegfried Jackstien
 

from the picture i would say your studs are all three turned to the right .. but you sure can reposition them that the two srews at the top are exact horizontal

Am 10.04.2021 um 15:07 schrieb Simon Brown:

Hi,

 

Here you go, how did you know the correct space for the holes?

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Siegfried Jackstien
Sent: 10 April 2021 14:43
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Pluto / F5OEO Help Please

 

looks like one stud at bottom and two at the top ... right?!?

if you see from the front the connectors should be at the 7 oclock position

not exactly ...  at 34minutes positionyou have 24 degrees skew and dishpointer says -23.3 needed so with 34 min position you are close enough

if one stud down is right ... i preset lnb skew to that angle ... ok??

greetz sigi dg9bfc

ps spray-painted yesterday ... raincap today ... then its finished

Am 10.04.2021 um 06:32 schrieb Simon Brown:

Hi,

 

I'll take some pictures today. Here's an older picture with an older LNB, it may show all you need?

 


--
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