[Moon-net] First Echoes on 3400 MHz

[Edward R. Cole]

At 02:27 PM 11/7/2006 +0000, peter blair wrote:
>
> Last night I heard my first echoes on 3400 MHz. This project has been a
long time reaching fruition! The system is 6m dish , 0.375f/D with VE4MA
feed, at present using linear polarisation. The complete transceiver is at
the focus of the dish   with two 17W modules combined to give about 27 W at
the feed. The ~100MHz LO and 144MHz up and down are on a single coax. The
PSU is at the base of the dish.
>I see 1dB of moon noise and echoes are +5dB in 500Hz, these figures are
consistent with the measured system parameters and the eme calc sw
predictions.
>
> Next step is to tidy up the shack end of the system and make a little 144
to 200 MHz transverter  to enable me to work on 3456 MHz.
>
> At present we are in a very calm wx system but wind will be a problem
with a1dB beamwidth of 0.5 degree.
> I know I can get about another 1-2dB of Power at the feed and about 1db
more receive sensitivity and there is something to be got from touching up
the dish profile.
>If anyone out there would like a test in the next two days please let me
know.
>73 Peter G3LTF

Excellent, Peter.

Some day when I get the 4.9m dish up and 1296 is QRV, I may give 3456 eme a
go.  I have two Toshiba amps which would provide about 70-80w, if combined.
 That ought ot equal your signal with the larger dish (I hope).

Right now I am struggling in the early winter wx to get my 2m-eme back up
(after the QTH move). 
73's,
Ed - KL7UW  
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http://www.qsl.net/al7eb - BP40iq 
144-EME: FT-847, mgf-1801/1402, 4xM2-xpol-20, 170w
432-EME: FT-847, mgf-1402, 1x21-ele (18.6 dBi), 60w
USA Rep. for Dubus Magazine: dubususa at hotmail.com
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