Hi Mal,
When was your last 2-way CW QSO (137-137, not the 137-HF stuff) on 137
kHz? Who was the worked station?
73, Stefan
Am 18.09.2012 17:43, schrieb mal hamilton:
Stefan
Faster speeds are BEST not slower
I am working on Fast Bursts of CW
I will have been on the frequency made a contact and gone before you get
started !!
Mal/G3KEV
----- Original Message -----
From: "Stefan Schäfer"<[email protected]>
To:<[email protected]>
Cc: "Joe Taylor"<[email protected]>; "Edgar J Twining"
<[email protected]>
Sent: Tuesday, September 18, 2012 3:20 PM
Subject: LF: WSPR tests by DK7FC
Dear LF group,
A few days we started a discussion about a slower WSPR here in the
group. After that, i've been in contact with K1JT who meant he will work
out a slower WSPR version for LF, in a few months (hopefully).
Markus/DF6NM kindly prepared a tool to generate different types of WSPR.
There are 3 versions. The first takes 2 minutes, i.e. the normal WSPR
that can be decoded with the normal WSPR software. Then there are slower
versions taking 8 and 32 minutes.
We want to make some pre-tests to see the SNR improvement of a slower
WSPR, i.e. check if it will be confirmed by the SNR display that WSPR-8
shows a 6 dB better SNR (12 dB SNR improvement for WSPR-32 respectively).
Hopefully this will result in a new DX-mode on LF (Yes Mal, i know :-) ).
So now i joined the WSPR group and start to do some test transmissions
with the normal 2 minute WSPR code, using Markus' tool. The goal is to
see if the tool works properly and what decode levels i can obtain in
various distances.
A 2 minute WSPR beacon is running here in Heidelberg / JN49IK, 50% TX
time. I will run it until tomorrow 6 UTC.
Reports apprechiated :-)
Please can we try to move the LF reports/hour peak in the diagram above
the level of the 20m band? ;-)
Tests using the 8 and 32 minute WSPR will follow soon.
73, Stefan/DK7FC
PS: TX pwr may be a bit reduced in first tests, abt. - 10 dB f.s.
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