[amsat-bb] continuing education

[Jerry Pixton <jpixton@xxxxxxxxxxx>]

Hi all,

thanks for the notes on metal in middle of helix. Think I will continue 
along those lines. Makes the mechanical part easier.

My question for todays "continuing education" session  ---

When we compute the G/T performance metric, do we use the full gain of the 
antenna?  That is, we don't subtract 3 dB because of polarity mismatch 
(circular to linear). Seems to me if we measure the G/T metric using the 
sun then we are getting the whole gain.

The 3 dB loss only comes in when we think about a particular signal we want 
to receive. Correct????? Or am I confused?

Love the new uplink spread sheet, Gene.

Jerry, W6IHG
------------------------------------------
Dr. Jerry R. Pixton, PIXOS Designs LLC
http://www.pixos.com/designs/
jpixton@shentel.net
------------------------------------------

----
Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org