Date   

Re: RF Gain & NR w/ RSPDuo

jdow
 

With AGC the threshold control nicely approximates an effective RF gain control that raises the signal level at which the AGC becomes effective. However, do remember you can note some values that seem to work in notepad and make more changes to them all. A little experimentation can let you know what the controls do. The notepad reference is a way to get back to settings you like.

That's probably the best way to learn all the features. Some will be "Oh, I see what it does. Why do I want that?" Some will be (showing my age) "Nifty". And some will need some use to see what they do for you. (That's how I learn commercial or military surplus equipment. It even led me, as a teenager, to dig into the "crystal notch filter" within the NC-109 I had.)

Listen to the CW ops here. I have enough dyslexia learning the code just doesn't work for me. I did get to 35 WPM without ever really learning the code by sounds. I just followed a mental decoding tree in my head aided by context. It was a heavy duty strain. For me CW is not fun. And that table is long gone, now.

{^_^}

On 20210723 19:42:28, n6vl via groups.io wrote:
Replying to jdow,

My bad, I didn't catch turning AGC off, you did mention it the first time. Thanks for the clarification.

I'm  more of a CW listener than operator. Trying to get SDRC with my SDRPlay approximate my FTDX3000 on receive, which is a tall order. Want to use the SDR as a second receiver. The transceiver and the SDR are very different receive in usage.

Steve


Re: RF Gain & NR w/ RSPDuo

n6vl
 

Replying to jdow,

My bad, I didn't catch turning AGC off, you did mention it the first time. Thanks for the clarification.

I'm  more of a CW listener than operator. Trying to get SDRC with my SDRPlay approximate my FTDX3000 on receive, which is a tall order. Want to use the SDR as a second receiver. The transceiver and the SDR are very different receive in usage.

Steve


Re: RF Gain & NR w/ RSPDuo

jdow
 

Turn AGC off to get the slider I meant. There are some CW ops who hate AGC and run MGC all the time. So I suggested it. If you like the threshold control operation you might benefit from a long hang time on the AGC. On my R-390A I put in a hang agc that as a by product raised gain maybe 10-20dB fairly rapidly, hung there for a second or so, and then fairly quickly raised gain to max I had set with its "threshold control", the old MGC control modified somewhat. I grew to really like that action. Weak signals trying to break in got a tiny boost and my ears got a rest for a second before the noise came up. Experimenting with that is on my RF bucket list.

{^_^}

On 20210723 09:48:37, n6vl via groups.io wrote:
Replying to jdow

You have the same solution as oldjackbob above. The only difference is there is NO gain slider in my installation. I think you meant the Threshold slider instead. See the photo in message #63478 above.

Steve


Re: RF Gain & NR w/ RSPDuo

n6vl
 

Replying to jdow

You have the same solution as oldjackbob above. The only difference is there is NO gain slider in my installation. I think you meant the Threshold slider instead. See the photo in message #63478 above.

Steve


Re: RF Gain & NR w/ RSPDuo

n6vl
 

Thanks Mark!

This solution does the trick!. The only caveat is that I can't do this w/o actually going into the AGC settings and change it. Also there are 3 possible AGC settings: Fast, Med, & Slow each with a separate Threshold slider.

In the end it's exactly what I'm looking for. It's the closest thing in SDR Console to an RF Gain knob on a ham transceiver.

The NR function is another matter. I like NR3 with lower settings under 10 dB. It works okay on SSB. On CW I prefer to disable all NR and use narrower filters.

Steve


Re: RF Gain & NR w/ RSPDuo

jdow
 

That is another way to do it. (And the volume control can probably help, too.)

{^_^}

On 20210722 13:13:07, oldjackbob@... wrote:
Steve,

I've always optimized S/N ratio in SDR Console by adjusting the Receiver AGC Threshold.

Mark




Re: RSPDuo and SDRC

jdow
 

I knew somebody would ask that. You have to get into the design for frequency synthesizers to understand the effect. An example is the rtlsdr dongle synthesizer. It works on the basis of the average frequency being correct as it dithers between two "exact" settings. If you are simply listening there's no big problem. (Although SSB could sound "odd".) Two dongles set the same will still wander up and down with respect to each other enough to foul up efforts to perform RDF or nulling functions. There have been discussions of this on rtlsdr.com. Getting the dividers in the synthesizers in the same phase as each other takes some effort. Apparently when done, however, they have had success with techniques that require two receivers on two antennas that are tuned to EXACTLY the same frequency with no phase dither between them.

Was I clear enough, I hope. I want to be clear without wandering too far into the weeds.

{^_^}

On 20210722 10:31:11, Bob Dengler wrote:
At 7/22/2021 03:05 AM, you wrote:
If it has separate synthesizers then you can take it to the bank you will have synchronization problems for nulling applications and the like. For average listening it ought to be "Pluto level" good. {^_^} 
If the 2 synths are locked to the same reference, why would they drift w.r.t. each other?  Isn't that the definition of "phase locked"?

I can recall one instance where two commercial synthesizers locked to the same reference did drift w.r.t. each other over time, maybe 10° or so per minute.  But the outputs of both were multiplied up to ~500 GHz.

<O_O>

Bob NO6B 







Re: RF Gain & NR w/ RSPDuo

jdow
 

I see a little bit of a problem here. On 40 meters the RF Gain control cannot change the actual SNR due to all or most of it coming in on the antenna wire. And as a practical matter I've seen a front end that actually developed a lower noise figure with increased AGC action It had other defects that made it undesireable. So I am not sure what effect you are experiencing on your transceiver.

That said on the left you will see an AGC tab. Click to expand it. Then click the off button. The "Gain" slider then behaves like an RF gain control. But it will behave the same as the audio level control for SSB and CW. For AM you may see a difference. I suspect it will not be big. Note that an SSB or CW receiver without AGC is basically a direct frequency conversion to audio frequency from RF with filters and no other audio conditioning. So going from maximum gain downwards can only increase the noise level relative to the signal level.

In general you get the best SDR or ham transceiver performance with the gain set at the point the signal to noise stops improving with increased gain. You can increase the gain usefully until you see spurious signals more or less explode onto your spectrum display. You cannot do better usefully.

{^_^}

On 20210722 09:28:06, n6vl via groups.io wrote:
Using a new RSPDuo with V3 and having trouble with RF Gain and Noise Reduction. I've been listening to SSB and CW signals on 40 meters and trying new emulate my ham HF transceiver. I'm used to lowering RF Gain to get a better signal to noise ratio. Also the same with Noise Reduction.
But this isn't happening with SDR Console V3 for me. I have a little better success with SDRUno with noise reduction. But I like Console so much better, especially for an ergo perspective. Bottom line: I get fatigued trying to copy signals with my RSPDuo.
Any ideas? de Steve N6VL


Re: RF Gain & NR w/ RSPDuo

oldjackbob@...
 

Steve,

I've always optimized S/N ratio in SDR Console by adjusting the Receiver AGC Threshold.

Mark



Re: RSPDuo and SDRC

Bob Dengler
 

At 7/22/2021 03:05 AM, you wrote:
If it has separate synthesizers then you can take it to the bank you will have synchronization problems for nulling applications and the like. For average listening it ought to be "Pluto level" good. {^_^}
If the 2 synths are locked to the same reference, why would they drift w.r.t. each other? Isn't that the definition of "phase locked"?

I can recall one instance where two commercial synthesizers locked to the same reference did drift w.r.t. each other over time, maybe 10° or so per minute. But the outputs of both were multiplied up to ~500 GHz.

<O_O>

Bob NO6B


RF Gain & NR w/ RSPDuo

n6vl
 

Using a new RSPDuo with V3 and having trouble with RF Gain and Noise Reduction. I've been listening to SSB and CW signals on 40 meters and trying new emulate my ham HF transceiver. I'm used to lowering RF Gain to get a better signal to noise ratio. Also the same with Noise Reduction.
But this isn't happening with SDR Console V3 for me. I have a little better success with SDRUno with noise reduction. But I like Console so much better, especially for an ergo perspective.

Bottom line: I get fatigued trying to copy signals with my RSPDuo.
Any ideas? de Steve N6VL


Re: RSPDuo and SDRC

Siegfried Jackstien
 

i do not exactly know the internals of the chip ... so if phasing apps (nulling) do work is what i can not say

something to be found out

dg9bfc sigi

Am 22.07.2021 um 12:05 schrieb jdow:

If it has separate synthesizers then you can take it to the bank you will have synchronization problems for nulling applications and the like. For average listening it ought to be "Pluto level" good.

{^_^}

On 20210722 02:46:02, Siegfried Jackstien wrote:

its a single chip with a single main clock (40 megs) ... so i guess it could work

dg9bfc sigi

Am 22.07.2021 um 01:03 schrieb jdow:
If there are two frequency synthesizers involved you have to play special games to get them to produce phase coherent outputs.

{^_^}

On 20210721 05:01:06, Siegfried Jackstien wrote:

i guess even when there is a time delay between sample of first and second port the time delay should be fixed in time (and could be "shaved away" with software)

dg9bfc sigi


Am 21.07.2021 um 13:57 schrieb Siegfried Jackstien:

i do not know about the phase thingy ... thats a point to be investigated ... right a minute ago postman brought 3 new ones to the "clinic of doc pluto" :-)

(to be modded with a better tcxo, housed in aluminium case etc etc)

to investigate the phase coherent and to test things out you sure need an own revision c/d ... (and modding it to new tcxo is a tiny bit tricky)

on the other hand the new revision has the option to add a gps reference  .. ext clock in on ipex connectors on the board .. switching to external with a fw command ... switching from 1r1t to 2r2t also with fw command ... so the new revision has not just the second set of rx and tx ports but also ext clock in and out (a full blown modded pluto then has 6 sma sockets)

greetz sigi dg9bfc


Am 21.07.2021 um 13:40 schrieb Simon Brown:

I don’t have a new revision Pluto. What would the second channel be used for? I doubt it’s phase-coherent, it could be.

 

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: 21 July 2021 12:34
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] RSPDuo and SDRC

 

what about support for second channel in Pluto??

the new revision has two rx and two tx ports ... do you plan to support the second channel in the Pluto??

greetz sigi dg9bfc

Am 21.07.2021 um 12:40 schrieb Simon Brown:

Well,

 

There’s only one vote that matters 😊 . Seriously, were there a radio with 4 or more channels I could be very interested, sadly one which was being developed will no longer be released to the public.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of n6vl via groups.io
Sent: 20 July 2021 05:31
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] RSPDuo and SDRC

 

[Edited Message Follows]

I vote for diversity reception. I really don't like SDRUno. SDR Console is so much more intuitive.

de Steve N6VL


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Re: RSPDuo and SDRC

jdow
 

If it has separate synthesizers then you can take it to the bank you will have synchronization problems for nulling applications and the like. For average listening it ought to be "Pluto level" good.

{^_^}

On 20210722 02:46:02, Siegfried Jackstien wrote:

its a single chip with a single main clock (40 megs) ... so i guess it could work

dg9bfc sigi

Am 22.07.2021 um 01:03 schrieb jdow:
If there are two frequency synthesizers involved you have to play special games to get them to produce phase coherent outputs.

{^_^}

On 20210721 05:01:06, Siegfried Jackstien wrote:

i guess even when there is a time delay between sample of first and second port the time delay should be fixed in time (and could be "shaved away" with software)

dg9bfc sigi


Am 21.07.2021 um 13:57 schrieb Siegfried Jackstien:

i do not know about the phase thingy ... thats a point to be investigated ... right a minute ago postman brought 3 new ones to the "clinic of doc pluto" :-)

(to be modded with a better tcxo, housed in aluminium case etc etc)

to investigate the phase coherent and to test things out you sure need an own revision c/d ... (and modding it to new tcxo is a tiny bit tricky)

on the other hand the new revision has the option to add a gps reference  .. ext clock in on ipex connectors on the board .. switching to external with a fw command ... switching from 1r1t to 2r2t also with fw command ... so the new revision has not just the second set of rx and tx ports but also ext clock in and out (a full blown modded pluto then has 6 sma sockets)

greetz sigi dg9bfc


Am 21.07.2021 um 13:40 schrieb Simon Brown:

I don’t have a new revision Pluto. What would the second channel be used for? I doubt it’s phase-coherent, it could be.

 

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: 21 July 2021 12:34
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] RSPDuo and SDRC

 

what about support for second channel in Pluto??

the new revision has two rx and two tx ports ... do you plan to support the second channel in the Pluto??

greetz sigi dg9bfc

Am 21.07.2021 um 12:40 schrieb Simon Brown:

Well,

 

There’s only one vote that matters 😊 . Seriously, were there a radio with 4 or more channels I could be very interested, sadly one which was being developed will no longer be released to the public.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of n6vl via groups.io
Sent: 20 July 2021 05:31
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] RSPDuo and SDRC

 

[Edited Message Follows]

I vote for diversity reception. I really don't like SDRUno. SDR Console is so much more intuitive.

de Steve N6VL


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Re: RSPDuo and SDRC

Siegfried Jackstien
 

its a single chip with a single main clock (40 megs) ... so i guess it could work

dg9bfc sigi

Am 22.07.2021 um 01:03 schrieb jdow:

If there are two frequency synthesizers involved you have to play special games to get them to produce phase coherent outputs.

{^_^}

On 20210721 05:01:06, Siegfried Jackstien wrote:

i guess even when there is a time delay between sample of first and second port the time delay should be fixed in time (and could be "shaved away" with software)

dg9bfc sigi


Am 21.07.2021 um 13:57 schrieb Siegfried Jackstien:

i do not know about the phase thingy ... thats a point to be investigated ... right a minute ago postman brought 3 new ones to the "clinic of doc pluto" :-)

(to be modded with a better tcxo, housed in aluminium case etc etc)

to investigate the phase coherent and to test things out you sure need an own revision c/d ... (and modding it to new tcxo is a tiny bit tricky)

on the other hand the new revision has the option to add a gps reference  .. ext clock in on ipex connectors on the board .. switching to external with a fw command ... switching from 1r1t to 2r2t also with fw command ... so the new revision has not just the second set of rx and tx ports but also ext clock in and out (a full blown modded pluto then has 6 sma sockets)

greetz sigi dg9bfc


Am 21.07.2021 um 13:40 schrieb Simon Brown:

I don’t have a new revision Pluto. What would the second channel be used for? I doubt it’s phase-coherent, it could be.

 

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: 21 July 2021 12:34
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] RSPDuo and SDRC

 

what about support for second channel in Pluto??

the new revision has two rx and two tx ports ... do you plan to support the second channel in the Pluto??

greetz sigi dg9bfc

Am 21.07.2021 um 12:40 schrieb Simon Brown:

Well,

 

There’s only one vote that matters 😊 . Seriously, were there a radio with 4 or more channels I could be very interested, sadly one which was being developed will no longer be released to the public.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of n6vl via groups.io
Sent: 20 July 2021 05:31
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] RSPDuo and SDRC

 

[Edited Message Follows]

I vote for diversity reception. I really don't like SDRUno. SDR Console is so much more intuitive.

de Steve N6VL


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


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Re: RSPDuo and SDRC

jdow
 

If there are two frequency synthesizers involved you have to play special games to get them to produce phase coherent outputs.

{^_^}

On 20210721 05:01:06, Siegfried Jackstien wrote:

i guess even when there is a time delay between sample of first and second port the time delay should be fixed in time (and could be "shaved away" with software)

dg9bfc sigi


Am 21.07.2021 um 13:57 schrieb Siegfried Jackstien:

i do not know about the phase thingy ... thats a point to be investigated ... right a minute ago postman brought 3 new ones to the "clinic of doc pluto" :-)

(to be modded with a better tcxo, housed in aluminium case etc etc)

to investigate the phase coherent and to test things out you sure need an own revision c/d ... (and modding it to new tcxo is a tiny bit tricky)

on the other hand the new revision has the option to add a gps reference  .. ext clock in on ipex connectors on the board .. switching to external with a fw command ... switching from 1r1t to 2r2t also with fw command ... so the new revision has not just the second set of rx and tx ports but also ext clock in and out (a full blown modded pluto then has 6 sma sockets)

greetz sigi dg9bfc


Am 21.07.2021 um 13:40 schrieb Simon Brown:

I don’t have a new revision Pluto. What would the second channel be used for? I doubt it’s phase-coherent, it could be.

 

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: 21 July 2021 12:34
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] RSPDuo and SDRC

 

what about support for second channel in Pluto??

the new revision has two rx and two tx ports ... do you plan to support the second channel in the Pluto??

greetz sigi dg9bfc

Am 21.07.2021 um 12:40 schrieb Simon Brown:

Well,

 

There’s only one vote that matters 😊 . Seriously, were there a radio with 4 or more channels I could be very interested, sadly one which was being developed will no longer be released to the public.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of n6vl via groups.io
Sent: 20 July 2021 05:31
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] RSPDuo and SDRC

 

[Edited Message Follows]

I vote for diversity reception. I really don't like SDRUno. SDR Console is so much more intuitive.

de Steve N6VL


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


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


Re: RSPDuo and SDRC

Siegfried Jackstien
 

second channel could be used on second port of lnb to receive the spectrum of the wb transponder and control a minituoner ... not yet supported from evaristes fw but its in the build road ... more things to come in the future :-)

dg9bfc sigi

Am 21.07.2021 um 14:35 schrieb Simon Brown:

My Pluto is fine 😊 . No need for two channels simultaneously atm.

 

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: 21 July 2021 12:57
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] RSPDuo and SDRC

 

i do not know about the phase thingy ... thats a point to be investigated ... right a minute ago postman brought 3 new ones to the "clinic of doc pluto" :-)

(to be modded with a better tcxo, housed in aluminium case etc etc)

to investigate the phase coherent and to test things out you sure need an own revision c/d ... (and modding it to new tcxo is a tiny bit tricky)

on the other hand the new revision has the option to add a gps reference  .. ext clock in on ipex connectors on the board .. switching to external with a fw command ... switching from 1r1t to 2r2t also with fw command ... so the new revision has not just the second set of rx and tx ports but also ext clock in and out (a full blown modded pluto then has 6 sma sockets)

greetz sigi dg9bfc

 

Am 21.07.2021 um 13:40 schrieb Simon Brown:

I don’t have a new revision Pluto. What would the second channel be used for? I doubt it’s phase-coherent, it could be.

 

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: 21 July 2021 12:34
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] RSPDuo and SDRC

 

what about support for second channel in Pluto??

the new revision has two rx and two tx ports ... do you plan to support the second channel in the Pluto??

greetz sigi dg9bfc

Am 21.07.2021 um 12:40 schrieb Simon Brown:

Well,

 

There’s only one vote that matters 😊 . Seriously, were there a radio with 4 or more channels I could be very interested, sadly one which was being developed will no longer be released to the public.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of n6vl via groups.io
Sent: 20 July 2021 05:31
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] RSPDuo and SDRC

 

[Edited Message Follows]

I vote for diversity reception. I really don't like SDRUno. SDR Console is so much more intuitive.

de Steve N6VL


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


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


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


Re: RSPDuo and SDRC

Simon Brown
 

My Pluto is fine 😊 . No need for two channels simultaneously atm.

 

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: 21 July 2021 12:57
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] RSPDuo and SDRC

 

i do not know about the phase thingy ... thats a point to be investigated ... right a minute ago postman brought 3 new ones to the "clinic of doc pluto" :-)

(to be modded with a better tcxo, housed in aluminium case etc etc)

to investigate the phase coherent and to test things out you sure need an own revision c/d ... (and modding it to new tcxo is a tiny bit tricky)

on the other hand the new revision has the option to add a gps reference  .. ext clock in on ipex connectors on the board .. switching to external with a fw command ... switching from 1r1t to 2r2t also with fw command ... so the new revision has not just the second set of rx and tx ports but also ext clock in and out (a full blown modded pluto then has 6 sma sockets)

greetz sigi dg9bfc

 

Am 21.07.2021 um 13:40 schrieb Simon Brown:

I don’t have a new revision Pluto. What would the second channel be used for? I doubt it’s phase-coherent, it could be.

 

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: 21 July 2021 12:34
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] RSPDuo and SDRC

 

what about support for second channel in Pluto??

the new revision has two rx and two tx ports ... do you plan to support the second channel in the Pluto??

greetz sigi dg9bfc

Am 21.07.2021 um 12:40 schrieb Simon Brown:

Well,

 

There’s only one vote that matters 😊 . Seriously, were there a radio with 4 or more channels I could be very interested, sadly one which was being developed will no longer be released to the public.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of n6vl via groups.io
Sent: 20 July 2021 05:31
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] RSPDuo and SDRC

 

[Edited Message Follows]

I vote for diversity reception. I really don't like SDRUno. SDR Console is so much more intuitive.

de Steve N6VL


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


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- + - + -

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


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Re: RSPDuo and SDRC

Siegfried Jackstien
 

i guess even when there is a time delay between sample of first and second port the time delay should be fixed in time (and could be "shaved away" with software)

dg9bfc sigi


Am 21.07.2021 um 13:57 schrieb Siegfried Jackstien:

i do not know about the phase thingy ... thats a point to be investigated ... right a minute ago postman brought 3 new ones to the "clinic of doc pluto" :-)

(to be modded with a better tcxo, housed in aluminium case etc etc)

to investigate the phase coherent and to test things out you sure need an own revision c/d ... (and modding it to new tcxo is a tiny bit tricky)

on the other hand the new revision has the option to add a gps reference  .. ext clock in on ipex connectors on the board .. switching to external with a fw command ... switching from 1r1t to 2r2t also with fw command ... so the new revision has not just the second set of rx and tx ports but also ext clock in and out (a full blown modded pluto then has 6 sma sockets)

greetz sigi dg9bfc


Am 21.07.2021 um 13:40 schrieb Simon Brown:

I don’t have a new revision Pluto. What would the second channel be used for? I doubt it’s phase-coherent, it could be.

 

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: 21 July 2021 12:34
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] RSPDuo and SDRC

 

what about support for second channel in Pluto??

the new revision has two rx and two tx ports ... do you plan to support the second channel in the Pluto??

greetz sigi dg9bfc

Am 21.07.2021 um 12:40 schrieb Simon Brown:

Well,

 

There’s only one vote that matters 😊 . Seriously, were there a radio with 4 or more channels I could be very interested, sadly one which was being developed will no longer be released to the public.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of n6vl via groups.io
Sent: 20 July 2021 05:31
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] RSPDuo and SDRC

 

[Edited Message Follows]

I vote for diversity reception. I really don't like SDRUno. SDR Console is so much more intuitive.

de Steve N6VL


--

- + - + -

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


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


Re: RSPDuo and SDRC

Siegfried Jackstien
 

i do not know about the phase thingy ... thats a point to be investigated ... right a minute ago postman brought 3 new ones to the "clinic of doc pluto" :-)

(to be modded with a better tcxo, housed in aluminium case etc etc)

to investigate the phase coherent and to test things out you sure need an own revision c/d ... (and modding it to new tcxo is a tiny bit tricky)

on the other hand the new revision has the option to add a gps reference  .. ext clock in on ipex connectors on the board .. switching to external with a fw command ... switching from 1r1t to 2r2t also with fw command ... so the new revision has not just the second set of rx and tx ports but also ext clock in and out (a full blown modded pluto then has 6 sma sockets)

greetz sigi dg9bfc


Am 21.07.2021 um 13:40 schrieb Simon Brown:

I don’t have a new revision Pluto. What would the second channel be used for? I doubt it’s phase-coherent, it could be.

 

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: 21 July 2021 12:34
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] RSPDuo and SDRC

 

what about support for second channel in Pluto??

the new revision has two rx and two tx ports ... do you plan to support the second channel in the Pluto??

greetz sigi dg9bfc

Am 21.07.2021 um 12:40 schrieb Simon Brown:

Well,

 

There’s only one vote that matters 😊 . Seriously, were there a radio with 4 or more channels I could be very interested, sadly one which was being developed will no longer be released to the public.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of n6vl via groups.io
Sent: 20 July 2021 05:31
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] RSPDuo and SDRC

 

[Edited Message Follows]

I vote for diversity reception. I really don't like SDRUno. SDR Console is so much more intuitive.

de Steve N6VL


--

- + - + -

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


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


Re: RSPDuo and SDRC

Simon Brown
 

I don’t have a new revision Pluto. What would the second channel be used for? I doubt it’s phase-coherent, it could be.

 

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: 21 July 2021 12:34
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] RSPDuo and SDRC

 

what about support for second channel in Pluto??

the new revision has two rx and two tx ports ... do you plan to support the second channel in the Pluto??

greetz sigi dg9bfc

Am 21.07.2021 um 12:40 schrieb Simon Brown:

Well,

 

There’s only one vote that matters 😊 . Seriously, were there a radio with 4 or more channels I could be very interested, sadly one which was being developed will no longer be released to the public.

 

Simon Brown, G4ELI

https://www.sdr-radio.com

 

From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of n6vl via groups.io
Sent: 20 July 2021 05:31
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] RSPDuo and SDRC

 

[Edited Message Follows]

I vote for diversity reception. I really don't like SDRUno. SDR Console is so much more intuitive.

de Steve N6VL


--

- + - + -

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


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

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