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Re: vusat

Hi all,

About the topic:
a receiver separation of 4 MHz is possible with some filters.
We need to remember that the transponder will not on max power out
during full time, and only when a station will try to uplink.
A good filtering for the output of transponder and a careful choice
of frequency will be mandatory (the actual frequency used on the
breadboard model of AMSAT Italy, are "free values" and not intended
for a final use!) expecially for the image products in the TT/C
receiver system.
Remember the VHF FM repeater that work's with a separation of 0.6MHz
with rx and tx (with relatively hi power respect to the transponder
PA) on the same antenna in some cases.

73'  Paolo IW3QBN
  AMSAT Italy

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