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How to connect a LNA correctly?

Basically this is a typical drawing of connections between transceiver and antenna in case of use the LNA (Low Noise Amplifier).
The first one is the 144 MHz set-up. Use the transceiver and LNA without power amplifier.

We used:
-one coax cable
-2 coax relays
-an antenna
-a LNA
-a transceiver
On this picture you can see the 144 MHz set-up with power amplifier. This one is good for EME and MS operation.

We used:
-two coax cables
-2 coax relays
-an antenna
-a LNA
-a transceiver

You also can use this set-up for 432 MHz band. For 23 cm band I recommend use this set-up.

73,
Alex K6VHF

Discussion

One Response to “How to connect a LNA correctly?”

  1. I need 2 of your pre amps, with out relays. 144mhz and 432MHZ

    Posted by Jeff Allen | October 4, 2012, 10:00 am

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