[Lowfer] WSPR on 600m => was: RE: 500 kHz

[Collins, Graham]

Good day all,

I have been noticing the posts concerning WSPR on 600m. I frequently set up and monitor WSPR by frequency hopping including 600m but have never made a decode on 600m.

Up to now I have been using the default WSPR frequency of (I think) 502.400 USB) but I frequently see references to other frequencies that others are using. Point of note in the email below referencing 499.5. Is that 499.5 USB or center frequency? If that detail was posted I missed it.

Are others using "non-standard" wspr frequencies? Makes it hard to try and get decodes without spending hours in front of the radio hunting out the very signals.

Cheers, Graham ve3gtc FN25ig




-----Original Message-----
From: lowfer-bounces at mailman.qth.net [mailto:lowfer-bounces at mailman.qth.net] On Behalf Of Bob Raide
Sent: February 23, 2012 11:06
To: Bob Raide
Subject: Re: [Lowfer] 500 kHz


JD;
That's an interesting looking capture! When I first fire up this mode I listen to the signal on my receiver and swear sometimes that it  is a bare carrier with a vfo that is ever so slightly unstable. That 10 hz of wiggle isn't much bandwidth. 
Thanks-Bob
 

From: listread at lwca.org
To: lowfer at mailman.qth.net
Date: Thu, 23 Feb 2012 09:49:35 -0600
Subject: Re: [Lowfer] 500 kHz

I didn't spend as much of the night at 600 m as Garry did, but I did catch 
WE2XGR/6, 499.5 kHz, WSPR (spectrum attached; even in the presence of S9 
static in a 270 Hz bandwidth, the S9+ signal occupying less than 10 Hz of 
that BW should not have been any challenge to decode halfway across the 
continent, had I tried...there was a rather deep fade for several minutes 
beginning about 0356, but levels recovered later);  WD2XSH/6, 508.8 kHz, CW 
(I'd hate to be the first report of interference from this operation...it 
was mutual interference between /6 and the lower sideband of NDB OF, making 
it very hard to hear either clearly); WD2XSH/7, 476.3 kHz, both CW speeds 
and PSK31 (the only signal stronger than Bob's).  Thought I saw QRSS on 
495.02, but couldn't identify it.
 
For some reason, the static down at 185 and 137 got worse here as the 
evening progressed toward midnight, so that's when I gave up.  In the 
earlier part of the evening, I had both MP and NA at 137 until about 0241, 
when somebody turned off the switch to Newfoundland.  A few traces of signal 
showed up later, but never enough to copy again, so it was only Mitch 
thereafter.
 
Saw some traces of what should have been SIW and maybe WMS at 185.3, but not 
enough for positive ID.
 
John 

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