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Happy New Year
Hm, maybe I can convert the rtlsdr source I have to handle extio files. That might keep me off the street a few days. OTOH it would be a more fun challenge to skip the extra dll and include that code
Hm, maybe I can convert the rtlsdr source I have to handle extio files. That might keep me off the street a few days. OTOH it would be a more fun challenge to skip the extra dll and include that code
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By
jdow
· #65225
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Happy New Year
Oh poo. {o.o}
By
jdow
· #65220
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Happy New Year
Humans have an advantage. We understand context and current AI implementations don't come close to understanding context. That is subject to change. {o.o}
Humans have an advantage. We understand context and current AI implementations don't come close to understanding context. That is subject to change. {o.o}
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By
jdow
· #65217
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Happy New Year
Please somewhere in there squeeze in a few hours to put together the new RX888 knowledge to make it more useful within SDRC. {o.o}
Please somewhere in there squeeze in a few hours to put together the new RX888 knowledge to make it more useful within SDRC. {o.o}
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By
jdow
· #65214
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Interesting "source" of RF interference
The traditional sovereign cure for audio hum is 1 or more 1:1 audio transformers. It means you have a ground loop with non-negligible mains current on the shield connection of the #)*$)**&@##^ single
The traditional sovereign cure for audio hum is 1 or more 1:1 audio transformers. It means you have a ground loop with non-negligible mains current on the shield connection of the #)*$)**&@##^ single
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By
jdow
· #65196
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Interesting "source" of RF interference
Somebody mentioned the possibility of a failing MOV in the plugstrip. For that you'd have to take it apart. The easier solution is to toss the bugger. (And if it is new and not been through a thunders
Somebody mentioned the possibility of a failing MOV in the plugstrip. For that you'd have to take it apart. The easier solution is to toss the bugger. (And if it is new and not been through a thunders
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By
jdow
· #65192
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Interesting "source" of RF interference
You'll hate me for this Microsoft answer, 100% accurate and 100% useless. "Where it works." I guess what that says is work with some trial and accidental success, admitting to no errors. In general I
You'll hate me for this Microsoft answer, 100% accurate and 100% useless. "Where it works." I guess what that says is work with some trial and accidental success, admitting to no errors. In general I
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By
jdow
· #65185
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NDB - Airspy HF+ DIscovery versus Hermes Lite 2
Likely that would be antenna impedance variation and over exuberance for the matching transformer. {^_^}
Likely that would be antenna impedance variation and over exuberance for the matching transformer. {^_^}
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By
jdow
· #65156
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Reverse Spectrum
Several beginning with "that's a clever hack" but it's not really very good for anything or at least anything I wanted. So I never opened any of mine up to make the necessary change to allow proper di
Several beginning with "that's a clever hack" but it's not really very good for anything or at least anything I wanted. So I never opened any of mine up to make the necessary change to allow proper di
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By
jdow
· #65151
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NDB - Airspy HF+ DIscovery versus Hermes Lite 2
Heh, me be injuneer. Alas not hairy chested for some reason. So MY R390A has been tweaked a little. It goes down into that frequency range. I used it a little. I moved back to 20 meters SSB talking wi
Heh, me be injuneer. Alas not hairy chested for some reason. So MY R390A has been tweaked a little. It goes down into that frequency range. I used it a little. I moved back to 20 meters SSB talking wi
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By
jdow
· #65148
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NDB - Airspy HF+ DIscovery versus Hermes Lite 2
Assume dB relative to full scale for the A/D converter. {^_^}
Assume dB relative to full scale for the A/D converter. {^_^}
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By
jdow
· #65146
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NDB - Airspy HF+ DIscovery versus Hermes Lite 2
Exactly dB what. They are a measure of how far down you are from when the front end overloads. With the AirSpy HF+ further calibration is not really possible last I knew. For most other front ends cal
Exactly dB what. They are a measure of how far down you are from when the front end overloads. With the AirSpy HF+ further calibration is not really possible last I knew. For most other front ends cal
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By
jdow
· #65145
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NDB - Airspy HF+ DIscovery versus Hermes Lite 2
I suspect you are not running them correctly. I have listened to the best of the best analog. In fact I still have my R390A; but, it is retired just before I redesigned it for semiconductors. (I've be
I suspect you are not running them correctly. I have listened to the best of the best analog. In fact I still have my R390A; but, it is retired just before I redesigned it for semiconductors. (I've be
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By
jdow
· #65144
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NDB - Airspy HF+ DIscovery versus Hermes Lite 2
You have a really small antenna, perhaps? If not I suspect the Andrus is not setup as nicely as it could be. With a low loss antenna system below even 30 MHz and especially under 10 MHz it is VERY dif
You have a really small antenna, perhaps? If not I suspect the Andrus is not setup as nicely as it could be. With a low loss antenna system below even 30 MHz and especially under 10 MHz it is VERY dif
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By
jdow
· #65130
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NDB - Airspy HF+ DIscovery versus Hermes Lite 2
One other thing - if he is not using the AirSpy HF+ Discovery's AGC he's very likely running with some gain mismatches in the analog portion of the chain. {^_^}
One other thing - if he is not using the AirSpy HF+ Discovery's AGC he's very likely running with some gain mismatches in the analog portion of the chain. {^_^}
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By
jdow
· #65128
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NDB - Airspy HF+ DIscovery versus Hermes Lite 2
I suspect it is an issue with the antenna match to the receiver. One might provide better performance on any given antenna than the other. Which one does better depends on the antenna. And nothing say
I suspect it is an issue with the antenna match to the receiver. One might provide better performance on any given antenna than the other. Which one does better depends on the antenna. And nothing say
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By
jdow
· #65127
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A new way to shut off a PC
Just a random observation - I tend to over-provision the power supply on general principles. It will stand up to random heavy spikes in load a little better. I don't believe what manufacturers claim f
Just a random observation - I tend to over-provision the power supply on general principles. It will stand up to random heavy spikes in load a little better. I don't believe what manufacturers claim f
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By
jdow
· #65124
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137MHz "V" Antenna advice needed ...
I am making educated guesses here. Yes, connect them together to the shield of the feed line. I am not sure what you are trying to achieve here, though. {^_^}
I am making educated guesses here. Yes, connect them together to the shield of the feed line. I am not sure what you are trying to achieve here, though. {^_^}
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By
jdow
· #65097
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A new way to shut off a PC
So what is the CPU temperature. {^_^}
So what is the CPU temperature. {^_^}
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By
jdow
· #65095
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Airspy Black Friday Sales event is ON! 😍
Not to my knowledge. {^_^}
Not to my knowledge. {^_^}
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By
jdow
· #65082
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