Multiband end fed antennas 3.5 - 30 MHz.
1:49 transformer. 2 x 7 turns 1 mm. On FT240-43 2 turns to ground , c : 100pF 1000 V.
The 3 band antenna has a length of 10.01 m. followed by a coil of abut 23 uH (80 turns 1mm. enamel wire on a 19 mm pvc tube) and a endpiee of 1.85 m.
offering you a perfect vertical or horizontal antenna for fieldwork at 40-20-10 Meter.
There is also a 5 band version with 20.35 m. wire followed by a 110uH coil (about 260 turns 1 m cul on a 19mm pvc tube) and a 2.39 m. endpiece. This antenna works on 80-40-20-15 and 10 Meter. witout radials and a very low SWR.
This is in fact a 100 Watts version of the Par Electronics HF endfed halfwave multiband.
Special thanks : E22RBV , E20MIO