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From: "Dave G3WCB" <ganymede444@btopenworld.com>
To: <rsgb_lf_group@blacksheep.org>
Date: Mon, 12 Jan 2009 21:18:23 -0000
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Subject: LF: WSPR beacon on 136kHz - Tips
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Dear Piotr, Jim, Marco, Wolf,

Thanks for all the tips - there are plenty of things for me to try. I think=20=
Jim probably identified the main cause - not enough audio level. I was only=20=
getting Jim's signal as a green line on 137 kHz. On 500 kHz it was painting=20=
yellow (but not red).

Thanks for the help,

73, Dave G3WCB IO91RM

-----Original Message-----
From: owner-rsgb_lf_group@blacksheep.org
[mailto:owner-rsgb_lf_group@blacksheep.org]On Behalf Of Piotr Mlynarski
Sent: 12 January 2009 20:50
To: rsgb_lf_group@blacksheep.org
Subject: Re: LF: RE: RE: WSPR beacon on 136kHz - QRT


Dave G3WCB wrote:

>Hi Jim, LF. =20
>
>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
> =20
>
Hi Dave , LF
as other already  said  both the time (pc clock)  and frequency  must be=20
properly adjusted although  using this mode
on other bands i've noticed that   at the time when the  trace of a=20
signal was not entirely, say, horizontal
 i.e.  there was some freq. 'floating' over the 2 min period i still=20
got  positive decoding .  the wspr software  is primarily used  for the=20
beacon mode
( or TX'ing). The receiving  abilities are somewhat  'stiff '  or simply=20
there are not so many options you could play with.  the point is that=20
you see the signal AFTER it was received  and sometimes it takes more=20
than few seconds  to make the decoding process
i suggest to download the recent version of wsjt  - 7.02  where among=20
others, there is also an option for wspr as  the qso mode , however ,=20
you can  use it for only
receiving purposes - simply do not mark the "auto is on" box  clik on=20
the 'monitor'  button and you will receive wspr messages transmitted=20
either  by wspr soft or wsjt package.  Of course, at first you must=20
check the wspr mode it the "mode" option. when you  run the wsjt program=20
it also opens the specjt window which is of a great help when it comes=20
to the receiving the signal  - primarily you can  observe the signal all=20
the time during the 2 min tx period  - you have ( at the bottom of the=20
specjt window) 'buttons' for changin the  brightness, contrast and=20
digital gain.   also, in the main wsjt window, there is a TOL button=20
and  when you play with it using left or right mouse clicks you can =20
narrow or extend the built in filter ( the green mark  in the upper part=20
of specjt window)  click the mouse button and observe the widening or=20
narrowing the tiny green line . also looking  at the shape or  'width'=20
of the signal line you can adjust  the strenght of your signal from your=20
receiver coming into the sound card   may be  those few remarks will=20
bring some help...
                                                                           =20=
                                    =20
73, peter, sq7mpj
qth: lodz, poland /jo91rs/
                                  =20