Dear Piotr, Jim, Marco, Wolf,
Thanks for all the tips - there are plenty of things for me to try. I think Jim
probably identified the main cause - not enough audio level. I was only getting
Jim's signal as a green line on 137 kHz. On 500 kHz it was painting yellow (but
not red).
Thanks for the help,
73, Dave G3WCB IO91RM
-----Original Message-----
From: [email protected]
[mailto:[email protected]]On Behalf Of Piotr Mlynarski
Sent: 12 January 2009 20:50
To: [email protected]
Subject: Re: LF: RE: RE: WSPR beacon on 136kHz - QRT
Dave G3WCB wrote:
>Hi Jim, LF.
>
>Sadly no decodes from M0BMU or DF6NM on 136 last night.
>M0BMU was clearly audible and was showing on the waterfall display.
>
>I'm using WSPR 1.01_r1023, and it worked fine on 500kHz the other day.
>
>Am I doing something wrong? (well, yes, obviously, but what!)
>
>73, Dave G3WCB IO91RM
>
>
Hi Dave , LF
as other already said both the time (pc clock) and frequency must be
properly adjusted although using this mode
on other bands i've noticed that at the time when the trace of a
signal was not entirely, say, horizontal
i.e. there was some freq. 'floating' over the 2 min period i still
got positive decoding . the wspr software is primarily used for the
beacon mode
( or TX'ing). The receiving abilities are somewhat 'stiff ' or simply
there are not so many options you could play with. the point is that
you see the signal AFTER it was received and sometimes it takes more
than few seconds to make the decoding process
i suggest to download the recent version of wsjt - 7.02 where among
others, there is also an option for wspr as the qso mode , however ,
you can use it for only
receiving purposes - simply do not mark the "auto is on" box clik on
the 'monitor' button and you will receive wspr messages transmitted
either by wspr soft or wsjt package. Of course, at first you must
check the wspr mode it the "mode" option. when you run the wsjt program
it also opens the specjt window which is of a great help when it comes
to the receiving the signal - primarily you can observe the signal all
the time during the 2 min tx period - you have ( at the bottom of the
specjt window) 'buttons' for changin the brightness, contrast and
digital gain. also, in the main wsjt window, there is a TOL button
and when you play with it using left or right mouse clicks you can
narrow or extend the built in filter ( the green mark in the upper part
of specjt window) click the mouse button and observe the widening or
narrowing the tiny green line . also looking at the shape or 'width'
of the signal line you can adjust the strenght of your signal from your
receiver coming into the sound card may be those few remarks will
bring some help...
73, peter, sq7mpj
qth: lodz, poland /jo91rs/
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