Search found 486 matches

by g1hbe
Fri Sep 11, 2015 10:52 am
Forum: SDRplay related
Topic: signal strength very high in HDSDR
Replies: 5
Views: 7638

Re: signal strength very high in HDSDR

I think the AGC system in the SDRPlay always tries to keep the strongest signal in the selected bandwidth at peak level (ie just under clipping level). If there are no strong signals, the whole of the noise floor will rise as the gain is increased. That's how I read it anyway.
by g1hbe
Fri Aug 28, 2015 8:00 am
Forum: SDRplay related
Topic: am or mw reception
Replies: 4
Views: 4867

Re: am or mw reception

I agree with Sasan. The SDRPlay is a great SDR (probably the best at the price) but the AGC will always try to keep the strongest signal at maximum level. This can cause a lot of clutter, especially if you are using a big aerial or something that provides a lot of signal like the Wellbrook loop. Tur...
by g1hbe
Sun Aug 23, 2015 11:14 am
Forum: General
Topic: SDRPlay TCXO?
Replies: 23
Views: 22289

Re: SDRPlay TCXO?

OK, it's sorted. Under a magnifying glass and a ten-billion watt lamp, I could see that one of the c's was fractured. I didn't have any 18pf smd caps, but a 15 pf leaded part got the frequency to within 100 Hz. After a re-tweak of the frequenc trim setting, the strange offset has now gone away. Job ...
by g1hbe
Sun Aug 23, 2015 7:00 am
Forum: General
Topic: SDRPlay TCXO?
Replies: 23
Views: 22289

Re: SDRPlay TCXO?

Ah - I've been having a prod around and discovered that the xtal osc is running at 24.006 MHz. As this osc provides the reference for the synth(?), I'm assuming this could be the problem. Most likely c65 or c66 has died, probably as a result of my rather rough handling when re-housing the PCB in a b...
by g1hbe
Sat Aug 22, 2015 3:59 pm
Forum: General
Topic: SDRPlay TCXO?
Replies: 23
Views: 22289

Re: SDRPlay TCXO?

Thanks for the quick reply. Here's what I do: 1. Set sig gen (Marconi 2024) to 109 MHz. 2. Start SDR#. Set the tuning cursor to somewhere on the left of display. 3. Dial up 109.000000 MHz on SDR#. 4. Either - select SSB and trim oscillator for zero beat OR select AM and trim osc for peak in centre o...
by g1hbe
Sat Aug 22, 2015 11:04 am
Forum: General
Topic: SDRPlay TCXO?
Replies: 23
Views: 22289

Re: SDRPlay TCXO?

One thing that puzzles me is that there seems to be a discrepancy in the exact tuned frequency depending on 'where' you do it. If I trim the oscillator (via the EXTIO panel) with the test frequency at one end of the displayed spectrum, it is a few tens/hundreds of Hz out when I check it at the other...
by g1hbe
Sun Aug 16, 2015 11:07 am
Forum: General
Topic: SDRlay not recognized after update
Replies: 13
Views: 11910

Re: SDRlay not recognized after update

I had exactly the same problem. After noting that the new version was available, I decided to uninstall the old version(s) and start from scratch. I did it all in exactly the same way as I have always done, but it would not work. The EXTIO would not appear in the drop down menu in SDR#, no sign of i...
by g1hbe
Tue Aug 04, 2015 8:20 am
Forum: General
Topic: Laptop For sdrplay
Replies: 14
Views: 16969

Re: Laptop For sdrplay

Hi Scooby. I used to run my SDRplay on my modest laptop that had a P6200 processor at 1.3 GHz with 2 GB of memory. It worked well at all spans under 5 MHz. Going over that caused it to stutter. I now have a new (actually secondhand from Cash Converters!) laptop with an I-3 processor clocked at 2.4 G...
by g1hbe
Wed Jul 01, 2015 11:34 am
Forum: General
Topic: Decode
Replies: 8
Views: 8849

Re: Decode

The internal mixer of windows does the trick. It is buildin windows so no additinal software to pipe the audio is needed Hi ON4ALL. I'm using WIN7 professional on LENOVO T410. I never succeeded in doing that with ms win mixer (I'm currently using vb-cable) Can you please post some hint how to do it...
by g1hbe
Tue Jun 16, 2015 1:39 pm
Forum: General
Topic: New version of SDRPlay?
Replies: 1
Views: 3596

New version of SDRPlay?

Twitter rumour doing the rounds that there's a new version soon, one that has no gaps. Is this true or just another piece of fan hysteria?