Thanks to all who contributed to my Rucksack-Antenna test today. And thanks for picking me out of the noise.
Because of the surrounding trees the radiation conditions were not very good and because the antenna is only 1.7m long there is a difference of about 3 S-units to my endfed halfwave vertical.
It is a prototype. The whip is telescopic and I am using a loading coil at the bottom. There are three radial wires somehow packed into the rucksack as a kind of counterpoise. SWR is shown as about 2:1 and is tuned by the KX3 antennatuner.
I transmitted with the rucksack positioned as you can see it in the picture. The antenna did a good job for 19 QSOs.
The antenna is thought for activations in high altitude during the winter period. It takes only two minutes to get on the air.
I love SOTA. It also offers a large field for experimenting.
Hope to hear you again soon.