Chris, What receiver are you using? By how much does the background noise go down when you disconnect the antenna (ideally replacing the antenna with a 50-ohm resistor)? Do you have any local QRM? Ar
Hello Mike, Wednesday, November 11, 2015 I used to use the TS-590 for RX, but then a friend bought me a gift over, a kit from here: http://icas.to/lineup/idc-136ii-kit-eng.htm I used this new kit wit
Hello Jim, Wednesday, November 11, 2015 I'll cal the HDSDR S meter with my sig gen, and get some meaningful figures, but it may be over the weekend, got a busy week on here, thanks Jim. -- Best regar
Hello Mike, Wednesday, November 11, 2015 I just took a screen shot of HDSDR as of about 4.00PM with averaging set to 16. http://www.chriswilson.tv/band.jpg This is with the active antenna and the lit
Hello Mike, Wednesday, November 11, 2015 Thanks for the detailed replies everyone, I just grabbed a screen shot of HDSDR showing it in use with my little Japanese receiver and my active whip clone an
Winrad supports Perseus, and it works very well. It can be used instead of the supplied Perseus software, however, Winrad does not have an "AGC OFF" button (yet) but since... this problem can be cons
Which are the receivers you have encountered that do suffer this problem of non-switchable AGC? It doesn't sound like a very healthy trend at all ! I'd use an SDR-IQ for LF these days. In fact I use
Peter, Can you please provide some details of the Softrock mod by Jim M0BMU covering the two LF bands. Thanks. I am using a Softrock lite here on 500 Khz using a 4096 Khz Crystal and can confirm sens
If you have the sort of SDR that uses I/Q drive to the soundcard, then it can be tedious passing the recovered audio out to other software. It can be done using a utility called Virtual Audio Cable (
Yes, that's a good point. What has failed on the RA1792, Laurie. I've got a service manual for that Rx filed away somewhere. Andy G4JNT On 11/01/2008, Alan Melia <[email protected]> wrote: Hi
Hello Andy, About the SDR-IQ (I'm also a pleased owner of it)... The only thing it suffers from is not having a clock locked to a master reference. Needs 66.667MHz and I've just never got round to ma
Many thanks to those who responded to my mail on the subject of receivers for LF/QRSS. and my problems with my 1792. Paul Hendrik for the URL re circuits Tracey Gardner for the e'bay lead, and Warren
So that leaves SDR receivers like the Perseus, thanks Johan, but these are digital, can the AGC be turned off? In a SDR receiver, the possibility to turn OFF the AGC is a software function, so, in ca
Laurie, Yes, at least on Perseus. It has a dedicated "AGC OFF" button. Perseus uses the computer's default soundcard only for audio output (for listening). High speed USB 2.0 is used to transfer the
Perseus is a nice receiver. Except for the preselection filters and a little amplifier chip, just before the ADC, it is DSP all the way (direct sampling at 80MS/s) and it has an AGC OFF button! http:
I have for a long time used a Racal 1792 reciever for QRSS modes on LF. This receiver failed recently,and I have been looking for a replacement receiver. This search reveals a problem most modern rec
Hi Andy most if not all of the amateur receivers sold recently have not AGC-off function. As I told Laurie the only one I know is the AOR 7030 which has performance as good, if not better in some asp
