Re: DLM Comparisons

Richard Fry wrote:

>> ...
Because the claim has been made that the standard DLM is the equivalent of an unloaded, 1/4-wave monopole when both are used with the same r-f ground. Investigating that was the purpose of the exercise.

RF

The first DLM I constructed was 1/4 wave, it convinced me I should attempt the 1/2 wave version ... the 1/4 wave version DOES make a great stealth antenna--10m version 2'+" .

The 1/2 wave version 5'+" , a 1/4 10m reference = ~8'.

Due to the lower takeoff angle of the 1/2 wave DLM, it compares much more favorably with the physical length of a 1/4 wave reference antenna--and is actually of a shorter physical height.

No single antenna is the solution for all real world situations. However, I have no bone to pick with any particular antenna(s) or personalities ... I only have needs which particular designs may offer me.

Strange how the DLM is a VERY GOOD solution to some real world problems/situations and that, since it is considered "unconventional", causes so many to turn a blind eye.

Who says the DLM is the best construction in this particular direction of physically short antennas, perhaps it can be engineered to even greater performance--however, to do so would require an atmosphere of experimentation, trial-and-error, etc. which was in the ORIGINAL purposes of the amateur radio service ... too bad so many forget.

Regards,
JS
.

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