Checking out an Icom 746PRO on 2 meters using a copper J-pole antenna
on the tower I found the SWR of the J-pole was 3.5 to 1.0 quite high . We had high winds this winter and the J-pole was bent . Its to cold to do the repair now and I got the idea to make a quick little 2 meter antenna tuner
as a one evening project . The construction is shown in the video it is a standard PI network tuner both variable capacitors are grounded to the case the number 14 wire goes from one coax connector (SO239 ) directly to the stator of the first variable capacitor then continues as the 2 turn 5/8th inch coil connected directly to the stator of variable capacitor number 2 then directly to the second coax connector (SO239) very simple . The tuner coil is 2 turns of number 14 wire 5/8ths of an inch diameter I wound it on the smooth end of a 5/8ths inch drill bit and left 3 inches of #14 wire on each end to connect to the coax connectors . Anything that is close to that 5/8ths inch diameter should work winding the 2 turn coil part . It took 2 hours from start to finish to make and test it was an enjoyable project that works good and I will use here . Projects like this for me help with the Cabin fever we are experiencing here with that nasty virus going around . 73 Bob
Негізгі бет 2 METER ANTENNA TUNER , ONE EVENING 2 METER TUNER PROJECT,
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