Greetings Cecil, many thanks for your interest. (Hope you have a very
exciting New Year riding around on your magnificent Harley)
The reasons for the particular configuration that I am playing with were
originally clear but have become a little fuzzy over time. My aims are to
make an antenna that is 1) transportable 2) light weight 3) ground
independant 4) to be erected on a caravan in various caravan parks without
upsetting everybody 5) quick to set up and pull down 6) gives me a few bands
to play with 7) possibly even work to some degree !
After trying verticals, loops and dipoles I was ready to give up. Then I
remembered a thing called a Vipole that was lying on the garage rafters. I
paid hundreds of dollars for it but I could never make it work. It is a V
with two lightweight fiberglass whips that each have an inductance coil half
way along their length. They are marked 7Mhz (12' roughly) and 14Mhz (9'6"
roughly). (((The original design stipulated that the whips feed into a Balun
and then an UnUn transformer, and then use coax down to the rig))).
Anyway, I guessed that I could use the two lightweight whips - still in a
Vee configuration. I decided to dump the Balun and the transformer and
replace them with an auto tuner that I had lying around. So, now I have the
first five criteria - all I have to do is make it ring on a few bands
without smoke signals. So far it appears to receive well but I have serious
doubts about its radiation properties (if any) - time will tell.
Allan
"Cecil Moore" wrote in message
...
Allan Jeal wrote:
Is it possible to get some fairly brief opinions without causing a war or
even arguments ....
Is it likely to damage an Icom AH4 auto antenna tuner if the "antenna"
terminal is attached to one leg of a V (resonant at 14Mhz) and the earth
terminal is connected to the other leg of the V (resonant at 7Mhz)
without any additional grounding. Is there any reason to swap the legs
around. Assume 100 watts max. It would be helpful if any opinions came
from those who are familiar with the internals of the AH4. It would also
be helpful if any repondents understood that others could have a
differing opinion. de VK2DQC, Allan. tnx
Is it a 48 ft. dipole off-center-fed 16 ft. from the end?
If so, what do you seek to gain by off-center-feeding it?
--
73, Cecil http://www.qsl.net/w5dxp