[amsat-bb] Mast mounted low noise amps

Bill Acito w1pa at hotmail.com
Sun Jan 21 01:54:06 UTC 2018

This is a wealth of information, Greg...  thank you!

Bill  W1PA

On 1/20/2018 5:28 PM, Gregory Beat wrote:
> Bill -
> The Icom AG-series of mast mounted pre-amplifiers for weak-signal and 
> satellite work are now legacy (I believe Icom has discontinued 
> recently).  A lower noise figure of the active device (FET, MMIC) is 
> important for satellite work (sky), than weak-signal work (noisy 
> terrain/earth).
> High noise-levels with the AG-series are often attributed to a Failed 
> FET or an improper FET replacement by an earlier owner.

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