[amsat-bb] LNA Circuit for VHF and UHF homebrew

Zach Metzinger zmetzing at pobox.com
Fri Dec 7 15:18:25 UTC 2018


On December 7, 2018 8:55:23 AM CST, "lu9cbl at gmail.com" <lu9cbl at gmail.com> wrote:
>Hi to all!
>
>In my club we are building a groundstation, and we want to make two 
>LNA's one for VHF and other to UHF eggbeater antennas. Someone can
>share 
>a circuit to do one for each band??? i can't find it in google (maybe 
>i'm searching wrong).

Hello Mati,

I've had good luck with the following simple preamp.

http://www.ham-radio.com/n6ca/50MHz/50appnotes/U310.html

I constructed it in an old box. Pictures are here:

http://www.n0zgo.net/lna/

I have not measured the NF, but the construction site claims 1dB.

Good luck!

--- Zach
N0ZGO


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