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Hello to everybody

I'm new to the forum and I need some help.
I try to shorten the antenna of a handheld 27MHz transmitter.
Now the transmitter uses a 7mm diametre 865mm lenght telescopic antenna.
I would like to make a shorter antenna by wound 1mm copper wire to an 7mm izolator (naylon tube)
Can somebody tell me how long this tube and wire have to be and many times I have to wound the wire......


RE: Antenna

You can purchase "Citizen Band" (27 MHz, 11m band) antennas in any number of form factors, including "rubber duckie" style. Don't expect good performance with such antennas.


RE: Antenna

You can put a small "top hat" at the end of the whip, which will help to shorten it a little too.


Maguffin Microwave wireless design consulting

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