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From: "James Moritz" <james.moritz@btopenworld.com>
To: <rsgb_lf_group@blacksheep.org>
Date: Sun, 8 Oct 2006 21:41:15 +0100
MIME-Version: 1.0
Subject: LF: HFC weekend
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Dear LF Group,

We had a reasonably successful weekend at the RSGB HFC on the LF front - =
thanks to all those who listened for/worked MB2HFC on 136kHz, and who =
came to the talks and visited the station.

The LF station was set up after torrential rain on Friday afternoon, =
with the TX antenna supplied by G3KAU and the Crawley club, and the TX =
and RXs from M0BMU. I had only finished the 1kW TX a couple of days =
before, and so this was its first real test, which fortunately it passed =
well. We were able  to get out a decent transmit signal almost straight =
away, but receive was another matter, with very high local QRM levels on =
the TX antenna (as expected). By Saturday morning, an FT1000 at the =
Crawley club shack was available via the internet and Ham Radio Deluxe =
software for remote LF reception at the convention. This worked quite =
well, and several stations were worked through it, but it was an odd =
experience for the operators; hearing your own signal with about 1/2 =
second delay was totally confusing! The audio was very "digital" =
sounding, but obviously a big improvement on local reception.

By Saturday afternoon, we had set up a receiving loop antenna, on the =
end of about 120m of coax in an electrically quieter spot (this was out =
at the back of the hotel by the bins, on a patch of rough ground, oddly =
enough under some high voltage power lines!) This gave really quite good =
local reception, but unfortunately the CW callers seemed to have dried =
up by that time. We did work a number of stations in slow CW, until I =
got chucked out of the LF operating area at about 7pm, so that it could =
be locked up (I suppose they were worried I could have raided the RSGB =
book stand). A few more stations were worked on Sunday. The operators =
were mainly Derek G3GRO and myself. The station generated quite a lot of =
interest from passers by.

I gave two talks on LF, one on receiving, the other on transmitting, so =
there was a strong LF component in the technical sessions. With this, =
and setting up and operating the LF station, it was quite a busy =
weekend. Next year we should know exactly where to set up the antennas =
in advance, so things should go more smoothly!

Cheers, Jim Moritz
73 de M0BMU


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<DIV><FONT face=3DArial size=3D2>Dear LF Group,</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>We had&nbsp;a reasonably successful =
weekend at the=20
RSGB HFC on the LF front - thanks to all those who listened for/worked =
MB2HFC on=20
136kHz, and who came to the talks and visited the station.</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>The LF station was set up after =
torrential rain on=20
Friday afternoon, with the TX antenna supplied by G3KAU and the Crawley =
club,=20
and the TX and RXs from M0BMU. I had only finished the 1kW TX a couple =
of days=20
before, and so this was its first real test, which fortunately it passed =
well.=20
We were able&nbsp; to get out a decent transmit signal almost straight =
away, but=20
receive was another matter, with very high local QRM levels on the TX =
antenna=20
(as expected). By Saturday morning, an FT1000 at the Crawley club shack =
was=20
available via the internet and Ham Radio Deluxe software for remote LF =
reception=20
at the convention. This worked quite well, and several stations were =
worked=20
through it, but it was an odd experience for the operators; hearing your =
own=20
signal with about 1/2 second delay was totally confusing! The audio was =
very=20
"digital" sounding, but obviously a big improvement on local=20
reception.</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>By Saturday afternoon, we had set up a =
receiving=20
loop antenna, on the end of about 120m of coax in an electrically =
quieter spot=20
(this was out at the back of the hotel by the bins, on a patch of rough =
ground,=20
oddly enough under&nbsp;some high voltage power lines!) This gave really =
quite=20
good local reception, but unfortunately the CW callers seemed to have =
dried up=20
by that time. We did work a number of stations in slow CW, until I got =
chucked=20
out of the LF operating area at about 7pm, so that&nbsp;it could be =
locked up (I=20
suppose they were worried I&nbsp;could have raided the RSGB book stand). =
A few=20
more stations were worked on Sunday. The operators were mainly Derek =
G3GRO and=20
myself. The station generated quite a lot of interest from passers=20
by.</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>I gave two talks on LF, one on =
receiving, the other=20
on transmitting, so there was a strong LF component in the technical =
sessions.=20
With this, and setting up and operating the LF station, it was quite a =
busy=20
weekend. Next year we should know exactly where to set up the antennas =
in=20
advance, so things should go more smoothly!</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Cheers, Jim Moritz</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>73 de M0BMU</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp;</DIV></BODY></HTML>

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