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Re: Duplexer(s) for mode VU

Hi Alan,

Unless your antennas are far apart, you will need to
put a filter in the UHF line to prevent fundamental overload.
A COMET CF-416 duplexor works well.

Assuming your 2m transmitter is operating properly, you
generally will not need a VHF filter.

Tony AA2TX

At 10:49 PM 6/27/2004 +0000, Alan P. Biddle wrote:

>A question about using duplexers to reduce desense in mode VU (J)
>operations.  You can put one in the V TX line to reduce the 3rd harmonic,
>and from the U antenna to reduce the V fundamental overload.  Which, or
>both, do people use?

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