Rik van Riel wrote:
> On 09/09/2010 11:05 AM, Mirko S57AD wrote:
>> Some 40 years ago I've been in almost same situation, dwelling in huge
>> mansion building with attic 50' * 33' (15m * 10m). I simply made bent
>> dipole around the attic (nailed dipole wire to wooden beams), which
>> performed pretty well for me (local rag-chewing on CW). I think it
>> should work pretty well for you as well, with each side of dipole bent
>> in 3 * 20' sides of squared U shape...
>> -------------- ------------
>> | |
>> | |
>> | |
>> | |
>> ----------------O-----------
>>
>> where O is feedpoint of dipole. (Drawing not in scale, of course, :-D )...
>
>
> At the feed point, one can mount something like an LDG
> auto-tuner. Those devices can handle a pretty high
> SWR and will probably allow you to run the above antenna
> on all the bands 80 and up.
>
> In a 40x20 attic, you can probably fit about 110' of wire
> by going around the edges as shown in Mirko's diagram.
>
If you have a tuner at the feedpoint, it's not entirely clear that the
extra wire buys you much.
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