6 Oct 2014

10m WSPR results today

I have just been comparing my 10m WSPR results today with fellow local G0LRD (25km away). He is copying FAR more than I am this morning - stations across Europe, Russia and Australia whereas I have apparently copied NOTHING and I've only been spotted by the locals.  It could be antennas, WSPR-X playing up, or something else. I have just restarted WSPR-X in case this is the reason. Over the weekend I was getting spots from distant places with just 500mW.   It  is odd as G0LND was spotting RA3APW (2466km) running a genuine 100mW very well indeed. I used to work with RA3APW (Karen) years ago. I certainly should have copied this station. Odd.

UPDATE 1318z:  Well, I don't understand this at all. Nothing had changed (i.e all WSPR-X settings were as before which worked previously), but I had to switch WSPR-X  to Direct-X input before decodes were successful and were being uploaded. Now all seems to be well again after a wasted morning. I think I have to note which settings (i.e. PC assignment of audio settings) work, then make sure these are selected next time WSPR-X is opened, rather than assume the same PC settings are assigned when the software is opened. I think this was my problem earlier. Darn it.
at 12:14
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3 comments:

PE4BAS, Bas said...

Hello Roger, it could be soundcard settings? Could be you got IPO and ATT switched on? Or it could be the antenna/coax. So many different things you could check. There could also be a difference betweens WSPR-X and old WSPR 2. I don't know that for shure. But you could try. I just tested versions of JT65-HF and WSJT-X and compared receive. Lot's of differences between them. See my blog. 73, Bas

Mon Oct 06, 12:31:00 pm GMT+1
David (G0LRD) said...

Roger,
As you know, I'm also using a FT-817ND, albeit with the standard XTAL (I seem to have got a lucky and got one that exhibits near zero drift).

I always leave IPO *ON* (i.e. no pre-amp). I can't see much point in raising the signal and the noise-floor by the same amount ;-) Pre-amps have a place, but only at the other end of the feed-line in my opinion.

My guess is that the only significant difference between us is the antenna. Mine is a simple horizontal dipole at about 7m, fed with about 15m of RG-8X (a little under 1dB loss on 10m).

Also, during working hours I have a fairly quiet local noise environment.

Another thought - It couldn't be the rain today perhaps? Is water getting in somewhere?

David G0LRD

Mon Oct 06, 01:56:00 pm GMT+1
Roger G3XBM said...

Thanks for the helpful inputs Bas and Dave. Seems it was soundcard settings, but no idea why anything should have changed! I think the PC must have decided I needed a fiddle!

Mon Oct 06, 02:24:00 pm GMT+1

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