I see when converted to inches the antenna he is building is almost exact length for 155 mhz. However toward the bottom of the page it shows a table for choke adjustment at different freq. 155 MHz with 25mm choke diameter says 5 turns. Confused!
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Antenna help please!
- Thread starter Jlwhitt77
- Start date
I see when converted to inches the antenna he is building is almost exact length for 155 mhz. However toward the bottom of the page it shows a table for choke adjustment at different freq. 155 MHz with 25mm choke diameter says 5 turns. Confused!
Yes but read further. The choke has to be below frequency . hence he uses 9 turns for 144 to 148 ( chart shows 135 mhz) You can take off 1 turn if you feel like it but it wont make that much difference.
Ok thank you very much. I am excited to get home and build this. Shouldnt take more than about 10 minutes. Lol.
Build took about 30 minutes. Used 3/4 pex pipe and rg58 coax. I put 9 turns in it as advised. Radio traffic really slow on a tuesday night in rural nw Mo. I have managed to pull in a call sign in the 155mhz range. Eager to get mounted on the roof of the house. Just heard traffic at 42mhz. Think its gona work like a champ.