On Mon, Dec 27, 2021 at 05:20 PM, Max wrote: For Joanne I made sure to engage AGC as requested. Tried both settings (see second video)Just realised in second video in my last post it looks like when I

On Mon, Dec 27, 2021 at 10:28 AM, Max wrote: On Sun, Dec 26, 2021 at 03:24 PM, sm6fhz wrote: If you missed the SAQ transmission on December 24th you have a new opportunity on December 27thThanks

On Sun, Dec 26, 2021 at 03:24 PM, sm6fhz wrote: If you missed the SAQ transmission on December 24th you have a new opportunity on December 27thThanks Ingolf. Only just seen this so listening. Brief

Hi all! If you missed the SAQ transmission on December 24th you have a new opportunity on December 27th: https://alexander.n.se/saq-is-testing-on-december-27th/ Good luck and enjoy! 73 / Ingolf,

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

Yes, I have to swap I/Q. I buyed some RTL-Stick because i know there is some function ( Direct Sampling ). But nothing changes. Somebody an idea? donaldhawbaker via groups.io

Sorry you lost your beam YL. It must havebeen a really traumatic experience. I did buy a box of dual gate mosfets manymoons ago with the aim of transistorising my R206. I got as far as changing

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

The R390A is one I still need to try out.It is somewhat of a lightweight pound for pound though compared with say theDST100 which tunes down to 50KHz and uses a VP41 RF amplifier to handle 10V

Assume dB relative to full scale for the A/D converter. {^_^} On 20211223 10:13:42, Tom Seeger wrote:

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

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

Max, Do you connect the receive antenna direct or via a splitter? For a good test connect the receive antenna direct. Simon Brown, G4ELI https://www.sdr-radio.com

Tom, I’m surprised the Airspy is better than WinRadio on LF – what antenna do you use? Airspy is very sensitive, I expect WinRadio not as sensitive. Simon Brown,

Max, Looking at this recording it would be interesting to see the Airspy settings (Ribbon Bar, Home). You could also try different Airspy bandwidths. Simon Brown,

Max, I do not need to do any of that with mine. I use HDSDR and just leave the AGC on auto, and the preamp OFF. If you need to do all that then I would suggest there is something very wrong with your

Before I made the videos I spent quite a while on the Airspy tweaking all settings of AGC, then AGC off and multiple different gain settings. The recording I showed was the best result I could get.

You might be right but I would not assume that w/o verifying first. Also, just for fun I made some amplitude measurements of my RSPdx. You might find the near end

I assume dBm. In any case its his Airspy vs my Airspy. So its relative and just for diagnostics. 73 Tom

Tom, I do not own an Airspy so I do not know but when you say below -130 dB what are the units? dB what? Are they an absolute figure like dBm (which is what you need)