[600MRG] XJM WSPR w/ G11

[AA5AM - Scott Armstrong]

Already getting decodes here and still have  about 2hrs til sunset.

2154 -25 -0.6   0.475720  0 WG2XJM EN91 37


Scott AA5AM
----- Original Message ----- 
From: "Eric Tichansky" <no3m at no3m.net>
To: <600mrg at w7ekb.com>
Sent: Thursday, January 24, 2013 3:37 PM
Subject: Re: [600MRG] XJM WSPR w/ G11


> Back on WSPR-2, 474.2 USB.  G11 SDR now driving amp to 80W (5W ERP).
>
> Apparently there was no antenna problem last night.  The G11 SDR was
> emitting a spurious signal (or wideband noise) that was causing
> reflected power due to narrow antenna bandwidth.
>
> I performed the TX image rejection and LO rejection adjustments and that
> seems to have settled long term stability, but still getting some kind
> of spurious emission on key-down indicated by a brief spike in SWR
> before it settles.
>
> A few other issues so far: GSDR (ported PowerSDR) is not indicating
> Power or SWR.  This is apparently a software issue.  CW is difficult as
> it's clipping part of the first character in Semi-breakin.  Works fine
> in MOX (manual PTT); however, still indications of the above spurious
> emission problem when first keying.  Hopefully some feedback from the
> designer/software dev to mitigate the problems.
>
> Otherwise, seems to be a nice little 600M rig.  RX seems to be doing well.
>
> 73 - Eric NO3M, WG2XJM
>
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