Re: LF: First Portable Trip

[Dave Pick <daveyxm@googlemail.com>]

Richard

Just think topband with the dimensions scaled accordingly, you were therefore using a 50ft inverted L with a less than 2m high vertical section getting lower.... and 12W. I think a kite is the only way with QRP!
I saw something on the grabber though, round about 2pm local?

Dave

2009/5/23 Richard Newstead <g3cwi@btconnect.com>

Not a great success. Tried a 200ft inverted L with 7m vertical section fed against 3 radials each between 50 and 100ft long. The final 100ft was very low - within 1 metre of the ground.

Did not succeeded in tuning aerial up in link configuration. Tried tapping the feeder at various points on the main coil but this reduced the Q dramatically and the RX and TX performance were very poor. In configurations where the RX performance was good and the Q high, there was little on no aerial current on transmit. The only configuration that gave some antenna current was nearly useless on receive. Connecting a radial to a metal fence detuned things so much that I go nowhere like that.

Heard GW0HXO's beacon at reasonable strength and GW3UEP's beacon - just. Called CQ quite a few times. No takers.

Band was still noisy even on relatively remote hilltop with horrible "line-timebase" type burble drifting across band.

Clearly more work required to get a viable system. Tips?

73

Richard
G3CWI

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G3YXM IO92BK Birmingham UK