The antenna tunning circuit can accommodate 1/2 wave length antennas or higher, for input resistances of 50 Ohms which make it suitable for CB (Citizen Band) transceivers. C1 is for fine tunning and C2 is just for tunning. Turning C3 with the help of C2 you can set the SWR to 1:1. The Coil L is made of 11 turns of insulated copper wire with diameter of 1mm.
Read More Source: http://www.next.gr/inside-circuits/Antenna-tunning-circuit-for-27MHz-CB-band-l4358.html
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This entry was posted on Wednesday, December 3rd, 2008 at 10:46 am and is filed under RF-Radio Frequency.
