The BIG and SMALL ANTENNA topic part 2

[BoRRoZ]

Antenna experiment - 868Mhz J-pole

I like to experiment with antennas and at my local Hamradio club (Veron/VRZA Twente) a fellow Ham, who loves the J-pole design, wondered if it was possible to make a j-pole antenna for for 868Mhz. So we calculated the design (with help of this calculator), [image] [image] Materials used aprx 50cm of 2mm diameter brass or copper wire 1 x BNC chassis part (no SMA of N was availible in the junk box) Just a little bending and here are the results [image] [image] [image] SWR…

a bit older but still nice experiments