SKCC 5123T----- FISTS 14979----- Flying Pigs 2331----- NAQCC 3610-----QRP ARCI 14176-----Polar Bear 257

Saturday, January 15, 2011

N4KGL Beacon Rocket Antenna Coupler

I wound the FT-114-43 toroid with 4 turns on transmitter side and 32 on the antenna side. I setup a sloping half wave with the high end 24 feet high. I could not get the SWR down and the noise bridge had the R near zero. So I started taking off turns on the antenna coil and the SWR got better and better until 19 turns it was about 1.5 to 1 then I shortened the antenna a bit and it went to 1 to 1. This might be a mirage but I'll take it. So I might try to make some contacts with this wire and see if it is an antenna or a dummy load. With the 4.75 ratio I ended up with that would say the antenna has an impedance around 1200 ohms. I did all this testing in the driveway and I may have gotten a couple of passer-bys interested in ham radio.