Beverage Antenna RF Overload?

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  • Updated 3 years ago
Decided to give a beverage antenna a try.  Seven hundred feet of wire, ground rod on far end,
capacitor but don't remember the value.  Using a Balun Design 9:1 Unun.  RG 8 from balun to the Flex 6500.  Balun is also grounded with ground rod.  Connect coax to BNC 19 on back of
the 6500.  Select RXA.  When I transmit the TX panadapter goes almost completely white.
Using about 80 watts at this time.  If I attempt to use the amp then I get audio drops and the computer does that little beep boop sound.  RF overload?  Wonder why.  If I remove the RXA antenna then all is well with the RF in audio, no other indication of excess RF in shack.  Suggestions/ideas?  Running 1.4.3.


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Roger Cole

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Posted 3 years ago

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Steve K9ZW, Elmer

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Likely enough coupling to require a "Front End Saver"/"Front End Protector" to limit the Beverage's reception being fed into your radio during transmit.

Not a need unique to the Flex-6x00, but just one of those things. Fortunately only a $75 +/- item.  I think Array Solutions version was called the AX-RXFEP.


Steve K9ZW

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Alex - DH2ID, Elmer

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Rob Fissel

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You'd need a resistor at the termination end, not a capacitor. The ohm value to match is somewhat important, and can be derived using an antenna analyzer.

Scroll down towards the bottom for more information on resistor types. 

I'd also put an RF choke on the feed line, although you're saying it doesn't seem like there's an RF issue in the shack or in your audio.  

Additionally, a FEP like other's are mentioning.