[Skimmertalk] Deaf QS1R

[Andy KU7T]

Can only hear my signal very, very low. Tried HDSDR, with same results.

Need to study the Red Pitaya, althrough I can only find a product called Stem labs. Assuming this is the same?  How good is it and is it widely used?

73
Andy
KU7T

Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10

________________________________
From: Bob Wilson, N6TV <n6tv at arrl.net>
Sent: Thursday, December 20, 2018 7:04:40 PM
To: Andy KU7T
Cc: SkimmerTalk Reflector
Subject: Re: [Skimmertalk] Deaf QS1R

On Thu, Dec 20, 2018 at 6:50 PM Andy KU7T <ku7t at ku7t.org<mailto:ku7t at ku7t.org>> wrote:

I also transmit at same location but have a protector on the front end, and also a 10 db preamp. Preamp first, then protector.

Protector should go between antenna and preamp, to protect the preamp.

In fact I did my investigations in SDRMaxV and it all runs fine but without signals and just some strange birdies.

I don't really trust that program.  Try HDSDR via Extio_QS1R.dll or Extio_CWSLdll.

http://www.srl-llc.com/qs1r_latest/WINRAD/ExtIO_qs1r_04192011.7z

https://github.com/HrochL/CWSL/raw/master/bin/CWSL.zip

Of course SDRMaxV can't be used while SkimSrv is running.

When I connect the CWSkimmer Server again, I get a jump from 4W to 9W when skimming all 7 bands (measured on the 110V side)

Sounds about right.  QS1R should draw about 1.5A x 5V = 7.5W when operating normally.

When I connect my skimmer antenna, it has about 100 decoders, when I disconnect the antenna, it stays about the same.

You really have to listen with a different program as you connect and disconnect the antenna.

 Is there something in the RF path that I could check? Is there a protection diode/fuse that could be blown?

Not that I'm aware of, other than a broken trace on the PC board at the antenna connector.

You should still be able to hear your own transmitter when transmitting into a dummy load.  Assuming the RX antenna is relatively nearby.

73,
Bob, N6TV