In reply to HB9RVS:
You may take advantage of my experience with antennas and gear used in SOTA activations:
• Wire 8,6m + 10m radial ….KX1(3W) + int. tuner
Remark: Vertical arrangement on fishing pole failed due to electric shock when pole was extended to lift the vertical wire to about 4m height and touching the lower end of antenna wire due to high static prior to snowfall out of blue sky. Wire was then used about 1,5m above ground in horizontal arrangement supported from the summits metal cross.
• Telescope-ski-stick with 40m loading coil and telescopic whip for tuning + 6,6m coax as folded radial …. ATS3 (2W)
• Fuchsantenna, 20m wire with Fuchs-tuner assembled from qrp-project kit with resistive swr indicator added. I used it on 20,30 and 40m……ATS3 (2W)
• Telescope-ski-stick with 40m loading coil and telescopic whip for tuning + 2 x 2,7m radials (tape-measure) ….KX1(3W) + int. tuner
Remark: trx exposed and damaged from static discharge. There was a nearby thunderstorm.
• Doublet 2 x 7,5m with symm feeder appr. 6,5m and Z-match (BLT-tuner) … Moskita (2W) 40m. Trx coax braid bonded to ground-spike as thunderstorm-like clouds approached.
• Linked dipole tuned for 20,30 and 40m.
Antenna configurations with possibility for solid (DC) connection to ground or at least with static discharge bleeding resistor are preferred compared to configurations where the possible path to ground from the antenna will be the trx front end circuit only.
The L-network tuners like the internal KX1 tuner or the switched longwire tuner (qrpkits) do not provide DC-grounding for the centre conductor connected to the antenna.
Antenna matching devices like the Fuchskreis (available from qrp-project) or Z-match like BLT-tuner (available from qrp-kits), provide at least a separation between antenna and trx.
The link coil connected to the trx provides a DC-short between centre and ground of the trx input/output. Connecting the trx coax-braid to a ground-spike will help to bleed static discharge to earth.
I hope to gain more experience with endfed dipoles using shorted lambda/4 parallel line for matching and grounding (as described for kite lifted antennas) or shortened dipoles with hairpin-match or doublets associated with Z-match-output coil providing a possible centre earth connection to protect the receiver front end and transmitter output.
72 Hermann, OE1HFC