Message-ID: <4853.200003061322@gemini>
From: "James Moritz" <j.r.moritz@herts.ac.uk>
Organization: University of Hertfordshire
To: rsgb_lf_group@blacksheep.org
Date: Mon, 6 Mar 2000 13:23:26 +0000
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII; format=flowed
Content-Transfer-Encoding: 8bit
Subject: LF: 73kHz Friuday night/ Saturday Morning
Precedence: bulk
Reply-To: rsgb_lf_group@blacksheep.org
Sender: <majordom@post.thorcom.com>

Dear LF Group,
	Thanks for all the 73kHz listener reports and the Spectrogram 
images. Glad to see that G3NYK has finally received some signals 
on the band!  Worked G3XDV with normal CW on Friday night and 
Saturday morning, and G3XTZ using QRSS, although could easily 
have had a normal CW QSO with Graham, at least at my end. Also 
(just about) heard G3YXM sending normal CW at about 1900 on 
Friday -  Dave appeared to be sending a beacon signal with his 
callsign & phone number, but was well down in the noise, and since 
he is closer to Rugby than me, I don't think a QSO would have 
been possible. QRSS would have been no problem though. Also 
saw another weak signal that appeared to be normal CW, and was 
slowly drifting down in frequency, but could not identify it.

Was sorry to miss out on the cross-band action; my E-mail 
account is at work, so I didn't get to hear about it until this morning. 
Congratulations to those who took part - looks like 73kHz might still 
have some excitements in store! I think I could set up my station to 
do 73/136 cross-band fairly quickly, so if anyone would like a go, 
let me know.

Am also testing my new power amp for both LF bands. I have gone 
for a linear, based very loosely on G0MRF's design, mainly so I 
could make use of my existing VFO and keying circuit without 
modification. It seems to achieve 3-400W ouput with a reasonable 
temperature rise, which should add several dB to my transmit 
signal.

I will give 73kHz a try tomorrow morning, in the hope that the Rugby 
TX will be off the air for maintenance again. I will see if I can get 
set up for cross - band operation by then also, time permitting.

Cheers, Jim Moritz
73 de M0BMU