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From: G3vtt@aol.com
Message-ID: <ce6.10d0a496.3392edc8@aol.com>
Date: Sat, 2 Jun 2007 11:59:04 EDT
To: rsgb_lf_group@blacksheep.org
MIME-Version: 1.0
Subject: LF: 500 Khz Portable Results
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Good afternoon,
 
A collective reply to all of your e-mail's.
 
Firstly sincere thanks to all of the stations who came on, particularly  
those who called but we could not hear.
 
Reports were G3UNT 599plus, G3XAQ 599, MoBMU 579, G3KEV 579. Nothing heard  
from Adrian G4GDR or Dave G3YMC as we had a 10 Kw broadcast station at Hoo  
breaking through into our DC receiver. The receiver was an NE602 mixer  
oscillator feeding an LM386 and the transmitter was a two transistor,  BC108/BFY51 
driving an IRF510 with 10w output. This was link coupled, 16 turns,  into a series 
atu using 300 turns of wire on a 1.5 inch plastic pipe and 1000pf  series 
tuning. Two delta kites were used to lift the wire at 45 degrees and the  
counterpoise was 200 feet of wire laying on the beach and going into the  Thames.
 
The battery supply was an alarm system gel battery and the whole lot was  
forced marched from my house down the hill and across the marsh to Egypt Bay  
which is almost opposite Canvey Island in the mouth of the Thames. It is around  
an hour in both directions in the blazing sun.
 
Putting the wire into the river (salt water) caused the aerial current to  
fall. Using the wire as a true counterpoise laying on the beach gave a  
significant increase in current. We are convinced we would copy all stations  with a 
better receiver. Geoff G3YVF has returned to base to modify the  rig.
 
Thanks again, we will repeat the exercise as soon as we can.
 
We saw no sign of any Ofcom inspectors despite informing the local Field  
Office........
 
73 all Colin G3VTT & Geoff G3YVF


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<DIV>Good afternoon,</DIV>
<DIV>&nbsp;</DIV>
<DIV>A collective reply to all of your e-mail's.</DIV>
<DIV>&nbsp;</DIV>
<DIV>Firstly sincere thanks to all of the stations who came on, particularly=
=20
those who called but we could not hear.</DIV>
<DIV>&nbsp;</DIV>
<DIV>Reports were G3UNT 599plus, G3XAQ 599, MoBMU 579, G3KEV 579. Nothing he=
ard=20
from Adrian G4GDR or Dave G3YMC as we had a 10 Kw broadcast station at Hoo=20
breaking through into our DC receiver. The receiver was an NE602 mixer=20
oscillator feeding an LM386 and the transmitter was a two transistor,=20
BC108/BFY51 driving an IRF510 with 10w output. This was link coupled, 16 tur=
ns,=20
into a series atu using 300 turns of wire on a 1.5 inch plastic pipe and 100=
0pf=20
series tuning. Two delta kites were used to lift the wire at 45 degrees and=20=
the=20
counterpoise was 200 feet of wire laying on the beach and going into the=20
Thames.</DIV>
<DIV>&nbsp;</DIV>
<DIV>The battery supply was an alarm system gel battery and the whole lot wa=
s=20
forced marched from my house down the hill and across the marsh to Egypt Bay=
=20
which is almost opposite Canvey Island in the mouth of the Thames. It is aro=
und=20
an hour in both directions in the blazing sun.</DIV>
<DIV>&nbsp;</DIV>
<DIV>Putting the wire into the river (salt water) caused the aerial current=20=
to=20
fall. Using the wire as a true counterpoise laying on the beach gave a=20
significant increase in current. We are convinced we would copy all stations=
=20
with a better receiver. Geoff G3YVF has returned to base to modify the=20
rig.</DIV>
<DIV>&nbsp;</DIV>
<DIV>Thanks again, we will repeat the exercise as soon as we can.</DIV>
<DIV>&nbsp;</DIV>
<DIV>We saw no sign of any Ofcom inspectors despite informing the local Fiel=
d=20
Office........</DIV>
<DIV>&nbsp;</DIV>
<DIV>73 all Colin G3VTT &amp; Geoff G3YVF</DIV></FONT></FONT>   </BODY></HTM=
L>

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