[amsat-bb] L-band uplink

[Jim Sanford <wb4gcs@xxxxxxxxx>]

Ladies and Gents:
Have been experimenting with the various spreadsheets for construction
of the L-band uplink station.

Assumption:  single Mitsubishi brick, allegedly capable of 18 watts
output on SSB; more like 10 to 15.

Considered a single helix at 16db max gain (based on the NRAO graphs). 
This works, but leaves no margin.

Considered a pair of 16db helices, 19db -- 11 to 18watts would activate
LEILA.

Also considered a pair of 18db yagis, for 18dbc.  15  to 18 watts
activates LEILA.  

Does this analysis concurr with those who are already on L-band uplink? 
Any other thoughts/comments??

Thanks & 73,
Jim
wb4gcs@amsat.org

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