[Lowfer] WSPR Weak Sig vs. QRP

David L. Wilson dwilson314 at verizon.net
Sun Feb 3 17:40:02 EST 2013


I it would be interesting to do some testing where a stronger station and
weaker operated on nearby frequencies in WSPR mode.  Of course, generally
stronger/weaker are dependent on the transmitter/receiver spacing  but the
recent days show more than one of us have similar problems with the same
stations.  I was just about to turn of the AGC on my R9500 to see if that
helped but then one of the stations moved its transmit window eliminating
the problem before I could test that.   I would be interested myself in
studying what I can do in receiver adjusting to counter the problem.

--
David L. Wilson
dwilson314 at verizon.net


> -----Original Message-----
> From: lowfer-bounces at mailman.qth.net [mailto:lowfer-
> bounces at mailman.qth.net] On Behalf Of Eric NO3M
> Sent: Sunday, February 03, 2013 5:18 PM
> To: lowfer at mailman.qth.net
> Subject: [Lowfer] WSPR Weak Sig vs. QRP
> 
> Weak signal and QRP are not necessarily synonymous.  Weak signal is
> subjective to the target area for decodes.  Higher ERP can be more useful
for
> propagation study, ie. observing characteristics of QSB, where lower power
> would just result in no decodes during drop-outs and provide nothing
> quantitative, but higher power would potentially show an actual dB
variation
> compared to peaks.
> 
> 73 - Eric NO3M, WG2XJM
> 
> On 02/02/13 21:22, pbunn wrote:
> > I was of the impression that WSPR  was a weak signal mode and signal
were
> to be a watt or so erp max.
> >
> 
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