I envisage a dipole about 30 m long and about six or 8 m above the ground, this
being what I can conveniently fit behind the shack. I intend to measure the R
and X series components at a range of frequencies down (I hope) to 100 kHz. The
feeder will probably be 10 or 20 m of open wire line.
The next stage will be to try a folded dipole with and without an open circuit
opposite the feed point. In the light of the results I may try various
impedances in place of the open/structural circuit.
All this will be a follow on from my principle experiment, which is to measure
the effect of running my LF end fed antenna directly away from the house
instead of parallel to it. I hope this will give a marked reduction in
environmental loss.
73
John F5VLF
On 27 Jul 2010, at 17:29CEST, Stefan Schäfer wrote:
> YES! Very fine John! What do you plan? Which QRG and which wire length? My
> hint is to use a mountain if you have one beside your QTH.
> Whish fun and good luck and await your results/report!
>
> 73, Stefan
>
> Am 27.07.2010 16:53, schrieb John Rabson:
>>
>> Andy,
>>
>> I hope to be doing some aerial experiments (yes - above ground not below)
>> in the next few weeks and will see if I can put something up and do some
>> measurements.
>>
>> 73
>> John F5VLF
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