But- what is default offset? Not everyone has the same thing for an offset.
It is determined properly, by simply starting on one end of the waterfall
and clicking every 100 cycles, and transmitting and observing your transmit
output. Where the RF output is the highest (from the sound card - which
drives the rig at its highest power) that is your sweet spot on the
soundcard, and where you offset should be set. Every computer sound card I
have used has had a different spot where that happens. My present one
happens to have its highest curve setting at 1 kc, but others have been much
lower, and some much higher. RTTY IS easier to find, but if someone gives
me that stupid 14.070 freq, and I go to it (14069 on the VFO plus 1 KC on my
sound card), very likely there is NO signal on that freq. But, there are
dozens above it, so which one is he when I go there? I have to individually
go to each one, one at a time, and copy till I get a call readout, or in my
case - using WinWarbler I have wideband copy, and go to that window and
search down until a call has indicated where he is. Its just so much easier
to use the correct freq in the first place. I dont care where your VFO is,
or what your offset is, and you shouldnt care where mine are either. If you
spot 14.07380 and I click on it, that is where my program sets my tracer to
copy the signal there, and I have the target copied immediately. If you
tell me 14.071 in the freq column, and then put a note in "+1280" , my CAT
control is still going to set my vfo to 14.071 and then the waterfall tracer
will be up 1kc from that, putting my trace on 14.072 which is still 1.8 KC
off the target- and there will be a dozen signals between my tracer, and the
real station.
This is the reason we should all use the waterfall freq, not the VFO freq,
and should train new ops right off the bat, so there is no confusion.
Danny Douglas N7DC
ex WN5QMX ET2US WA5UKR ET3USA
SV0WPP VS6DD N7DC/YV5 G5CTB all
DX 2-6 years each
.
QSL LOTW-buro- direct
As courtesy I upload to eQSL but if you
use that - also pls upload to LOTW
or hard card.
moderator [EMAIL PROTECTED]
moderator http://groups.yahoo.com/group/DXandTalk
----- Original Message -----
From: "John Becker" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Sunday, February 25, 2007 12:31 PM
Subject: Re: [digitalradio] 14100.5 kHz USB - ALE Channel Bandwidth,
IARUBeacon Guardband
> It makes sense if you are running "true" RTTY AFSK tones of 2125 / 2295.
> Or any mode for that fact. If you are using default offset I will find you
> on any dial frequency you may give.
>
>
> At 05:36 PM 2/24/2007, you wrote:
> >It just doesnt make sense to give someone the incorrect frequency when
> >spotting a digital station. Nor does it make sense to give them a VFO
freq,
> >since we all know that the station IS NOT THERE. It is the VFO plus the
> >audio card freq added together. That is where we will find the digital
> >station, no matter what rig we have, or what our offset freq is. I
really
> >detest seeing someone giving a vfo on the spot, and giving a offset to
add
> >to it, in the notes. Just give me the freq. I dont care what your vfo
or
> >offset is. Mine may or may not (probably not) be the same exact things.
> >But you can bet that if you give me the vfo plus offset as one figure,
that
> >when I click on it, my CAT program will put me on top of the signal, and
I
> >can read it immediately, without having to look around at a dozen
different
> >signals before I can do so. It is the same with CW signals. I may have
800
> >cy offset , and you may have 600 or 759, it doesnt matter. If you are
using
> >a waterfall, and I am, the signal will be right where we want to copy it.
> >If not using a waterfall/computer readout, it will still be in the
correct
> >place in our earphones.
>
>
>
>
>
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8:14 PM
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