Hello Steve, all,
I also built a QRSS transmitter based on the drawing of GW3UEP.
The transmitters of GW3UEP are cheap and easy to build.
My PA is a IRLZ24N (60 watts with 14 V supply).
You can see it on:
http://f6hcc.free.fr/tx472khz.htm
and modified for WSPR on:
http://f6hcc.free.fr/tx472wspr.htm
73, Jean / F6HCC
----- Original Message -----
From: "Steve" <[email protected]>
To: <[email protected]>
Sent: Saturday, June 14, 2014 4:14 AM
Subject: LF: SL 630m Overnight Bcn
I've been testing a little 25W GW3UEP Class-E transmitter for the past few
weeks and have just completed some observations of its performance at QRSS
speeds, using the VA7JX 630m grabber. I'm pretty surprised at how stable
the
xtal controlled signal is at the faster QRSS speeds and is even useable at
QRSS60 although somewhat chirpy by then. I decided to let the tx run all
night at QRSS60 and any reception reports would be very appreciated.
It is sending "SL" into my large 170' inverted L.
I think it's close to 475.044 and Jack's grabber is showing 475.0477 so
it's
probably somewhere in between :-) The grabber, and the chirp, can be seen
here:
http://www.qsl.net/va7jx/
Really not too terrible for an HC-49 crystal costing 51 cents!
Thanks....Steve / 73
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