[Elecraft] UHF connectors [was: Array Solutions Lightning Arrestor]

[Bill Frantz]

The losses pile up for those running QRP or QRPP. I have 
frequently thought that a QRP system which has the final 
amplifier at the feed point of the antenna would be very attractive.

A crude way of accomplishing a feed point amp would be to take a 
radio like the Rockmite and place it at the feed point. If you 
run the Rockmite with a 9V battery, all you just need wires for 
the paddle and the headphones.

The big problem as I see it is weight at the feed point. In 
theory, you could handle the whole operation with a RG-174 feed 
line. Run DC power on the feed line, and have the feedpoint 
electronics switch between transmit and receive depending on the 
signal level on the coax.

But this is just another of the projects lined up to fill the 
time when I'm not operating.

73 Bill AE6JV

On 2/11/18 at 11:49 AM, alorona at sbcglobal.net (Al Lorona) wrote:

>I encourage you to do an analysis to determine your system 
>efficiency. I recently did so and discovered that I have a 
>worst-case loss (to the feedpoint up at the antenna) of 1 dB, 
>which is 21% of my power. Gone. Forever. Whoosh!

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