Mike Dennison, GW3XDV/P

Amateur Radio LF Activity, October 1999

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Operating from Pembrokeshire (IO71NP)

    • Went to my holiday home in south-west Wales for a week and took the LF station with me. The intention was to fly a kite antenna on Sunday, but I had a 50ft mast with me as well. A generator was hired for the weekend to run the 200W BK Electronics amplifier.
  • Friday 29 October
    • Spent the evening threading a thin wire along the kite twine and making a winder (a bit like a large fishing reel).
  • Saturday 30 October
    • Tried the kite out in my preferred location, a large empty car park near the beach, just inside a steep sided valley.
    • No luck, like the two previous attempts at this location the kite was all over the place and kept coming down.
  • Sunday 31 October
    • Weather was very windy but dry. Took kite and mast with me, and all the gear. Plenty of time available as the clocks had just changed.
    • To my surprise, the kite flew immediately. Held by a bungee cord (thanks to G3YXM for that suggestion), it stayed up at an angle of between 45 and 60 degrees for over two hours. I ran out 100m of wire along the ground as a counterpoise.
    • It took over 45 minutes to get the tuning right, start the generator and get some current into the antenna. Only 1 amp compared to the 1.7A I get at home (possibly because I force cool the amplifier at home).
    • Sounded good on receive with the Greek RTTY at S7 and Loran clearly audible. By 0956, I was ready to put out a CQ.
    • Worked everyone I heard: GW4ALG (gave 579, got 589); GB2CPM (589/589); G0AKY (incomplete); PA0SE (559/259 incomplete); G6RO (559/579)
    • I put out one callsign "GW3XDV" on QRSs on 137.7kHz in case OK1FIG was watching, but I had no receive capability.
    • At 1100 part of the antenna brushed against the car, sparked across and melted the insulation on the thin wire. Worse, the nylon cord melted and broke. I came very close to losing the kite as it was held only by the few strands of wire. Fortunately they held and I was able to make repairs.
    • This was even more fortunate as the next QSO was SM6PXJ at 1407km (my previous best DX from that site wasa 420km). I finally worked G3AQC (569/579) and packed up, well pleased with the expedition.
    • Next time, I will make sure the antenna is well clear of the car, but you can expect some more kite operations from Pembrokeshire.

e-mail: mike.dennison@ntlworld.com