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Re: Open HPSDR Hermes (14 bit ADC, EP3C25) Transceiver Card
Getting PS working is a major goal for Q2. I actually have a lot of code in place…
Simon Brown, G4ELI
https://www.sdr-radio.com
Getting PS working is a major goal for Q2. I actually have a lot of code in place…
Simon Brown, G4ELI
https://www.sdr-radio.com
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By
Simon Brown
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#65899
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Re: Open HPSDR Hermes (14 bit ADC, EP3C25) Transceiver Card
No problem Mark. Really!
I also got uppity about the IC7300😊
I think that we would both like PS to be available on SDRC, but that is far from trivial and a lot to ask of Simon.
73
No problem Mark. Really!
I also got uppity about the IC7300😊
I think that we would both like PS to be available on SDRC, but that is far from trivial and a lot to ask of Simon.
73
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By
Conrad, PA5Y
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#65898
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Re: Open HPSDR Hermes (14 bit ADC, EP3C25) Transceiver Card
Conrad,
My apologies for my untoward attitude, you're a good man. This whole discussion has just got me really worked up for some reason so I need to back away from the thread.
Best regards,
Mark
Conrad,
My apologies for my untoward attitude, you're a good man. This whole discussion has just got me really worked up for some reason so I need to back away from the thread.
Best regards,
Mark
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By
Mark Cayton
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#65897
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Re: Open HPSDR Hermes (14 bit ADC, EP3C25) Transceiver Card
Wooooaahhh hold on. I most certainly am not a PS hater. Its great! You really have got the wrong end of the stick. The ANAN-7000 is a fine radio and is definitely capable of better performance with PS
Wooooaahhh hold on. I most certainly am not a PS hater. Its great! You really have got the wrong end of the stick. The ANAN-7000 is a fine radio and is definitely capable of better performance with PS
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By
Conrad, PA5Y
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#65896
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Re: Open HPSDR Hermes (14 bit ADC, EP3C25) Transceiver Card
Why so hostile? I am not trying to upset you. I made it perfectly clear that I was referring to the transverter port at 0dBm and that I only operate at 50MHz and above. I also said that the K3S PA was
Why so hostile? I am not trying to upset you. I made it perfectly clear that I was referring to the transverter port at 0dBm and that I only operate at 50MHz and above. I also said that the K3S PA was
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By
Conrad, PA5Y
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#65895
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Re: Open HPSDR Hermes (14 bit ADC, EP3C25) Transceiver Card
Conrad,
And it's not our fault that we're all talking apples (HF) and you're talking oranges (950 MHZ!) lol.
It's clear you're a PS hater, you've made that abundantly clear in numerous posts in this
Conrad,
And it's not our fault that we're all talking apples (HF) and you're talking oranges (950 MHZ!) lol.
It's clear you're a PS hater, you've made that abundantly clear in numerous posts in this
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By
Mark Cayton
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#65894
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Re: Open HPSDR Hermes (14 bit ADC, EP3C25) Transceiver Card
Agreed, But this is off the shelf Ham stuff.
Conrad
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>On Behalf Of jdow via groups.io
Sent: 25 February 2022 19:26
To:
Agreed, But this is off the shelf Ham stuff.
Conrad
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>On Behalf Of jdow via groups.io
Sent: 25 February 2022 19:26
To:
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By
Conrad, PA5Y
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#65893
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Re: IC-7300 composite noise
The instruments own PN with cross correlation at 28 MHz is -170dBc/Hz at 10kHz offset.
It is a remarkable instrument and designed for these kinds of measurements.
Look
The instruments own PN with cross correlation at 28 MHz is -170dBc/Hz at 10kHz offset.
It is a remarkable instrument and designed for these kinds of measurements.
Look
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By
Conrad, PA5Y
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#65892
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Re: Open HPSDR Hermes (14 bit ADC, EP3C25) Transceiver Card
Um, 51dB (the fractions are imaginary) is not all that good even at 1 kW. It's better than what you can buy today, for the most part. But. it's not very good when 60 dB to 70 dB is
Um, 51dB (the fractions are imaginary) is not all that good even at 1 kW. It's better than what you can buy today, for the most part. But. it's not very good when 60 dB to 70 dB is
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By
jdow
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#65891
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Re: Open HPSDR Hermes (14 bit ADC, EP3C25) Transceiver Card
Well I did say at 0dBm! Clearly. It is not my fault that you have PS fan boy eyes.
Copnrad
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>On Behalf Of oldjackbob via
Well I did say at 0dBm! Clearly. It is not my fault that you have PS fan boy eyes.
Copnrad
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>On Behalf Of oldjackbob via
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By
Conrad, PA5Y
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#65890
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Re: Open HPSDR Hermes (14 bit ADC, EP3C25) Transceiver Card
There is an economics pressure here. Who is going to be the first company to give up being price competitive in a small commodity market and will that company survive the hit to its
There is an economics pressure here. Who is going to be the first company to give up being price competitive in a small commodity market and will that company survive the hit to its
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By
jdow
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#65889
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Re: Open HPSDR Hermes (14 bit ADC, EP3C25) Transceiver Card
Mark, I flashed on one of the favorite 6-meter hacks I communicated with. The other ham worked at a military radio repair facility. They had huge bins of 6AC7 receiving pentodes in
Mark, I flashed on one of the favorite 6-meter hacks I communicated with. The other ham worked at a military radio repair facility. They had huge bins of 6AC7 receiving pentodes in
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By
jdow
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#65888
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Re: IC-7300 composite noise
On a hunch - run the radio on batteries. That this could be power supply noise modulating one of the stages or (horrors) the D/A converter's reference. (And I sort of wonder what the
On a hunch - run the radio on batteries. That this could be power supply noise modulating one of the stages or (horrors) the D/A converter's reference. (And I sort of wonder what the
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By
jdow
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#65887
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Re: Open HPSDR Hermes (14 bit ADC, EP3C25) Transceiver Card
On Fri, Feb 25, 2022 at 08:16 AM, Conrad, PA5Y wrote:
Look here at figure 3a, this is a Class A RF amplifier with no pre-distortion running at 2W per tone. The IM3 is -51.48dBc, this is at 950
On Fri, Feb 25, 2022 at 08:16 AM, Conrad, PA5Y wrote:
Look here at figure 3a, this is a Class A RF amplifier with no pre-distortion running at 2W per tone. The IM3 is -51.48dBc, this is at 950
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By
Mark Cayton
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#65886
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Re: Open HPSDR Hermes (14 bit ADC, EP3C25) Transceiver Card
My measurements are from a K3S and TS-890S, with a 2 tone signal at 0dBm from the transverter port. The difference between the 2 fundamental tones is better than 50dB down at the 3rd orders, I will
My measurements are from a K3S and TS-890S, with a 2 tone signal at 0dBm from the transverter port. The difference between the 2 fundamental tones is better than 50dB down at the 3rd orders, I will
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By
Conrad, PA5Y
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#65885
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IC-7300 composite noise
The Keysite picture was showing the spurs from a Hermes at 28.4 MHz with a 192kHz sample rate using the V1 firmware. it has nothing to do with the IC7300.
I have spare time now so I will repost
The Keysite picture was showing the spurs from a Hermes at 28.4 MHz with a 192kHz sample rate using the V1 firmware. it has nothing to do with the IC7300.
I have spare time now so I will repost
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By
Conrad, PA5Y
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#65884
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Re: Open HPSDR Hermes (14 bit ADC, EP3C25) Transceiver Card
Hello I never meant to come across as acrimonious, just insistent.
The plot is from a Rohde and Swartz FSUP signal source analyser in this
Hello I never meant to come across as acrimonious, just insistent.
The plot is from a Rohde and Swartz FSUP signal source analyser in this
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By
Conrad, PA5Y
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#65883
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Re: Open HPSDR Hermes (14 bit ADC, EP3C25) Transceiver Card
On Fri, Feb 25, 2022 at 04:03 AM, Conrad, PA5Y wrote:
The 0dBm from either my K3S or TS-890S is very good indeed. IMD3 from both is better than -50dBc.Conrad,
I don't understand your numbers at all. A
On Fri, Feb 25, 2022 at 04:03 AM, Conrad, PA5Y wrote:
The 0dBm from either my K3S or TS-890S is very good indeed. IMD3 from both is better than -50dBc.Conrad,
I don't understand your numbers at all. A
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By
Mark Cayton
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#65882
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Re: Open HPSDR Hermes (14 bit ADC, EP3C25) Transceiver Card
Looking at the Keysight picture you posted it's hard to tell the characteristics of the peaks that appear beside the (was it?) 28.4 MHz signal. (The screen notation of 390 kHz is
Looking at the Keysight picture you posted it's hard to tell the characteristics of the peaks that appear beside the (was it?) 28.4 MHz signal. (The screen notation of 390 kHz is
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By
jdow
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#65881
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Re: Open HPSDR Hermes (14 bit ADC, EP3C25) Transceiver Card
Um, I am not sure I understand that picture. That is the analyzer's specification or something very custom you have put together? I'm answering both emails here.
If that is the
Um, I am not sure I understand that picture. That is the analyzer's specification or something very custom you have put together? I'm answering both emails here.
If that is the
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By
jdow
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#65880
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