Home |
Search |
Today's Posts |
#10
![]() |
|||
|
|||
![]()
On Sat, 12 Jul 2003 01:11:52 GMT, Ron wrote:
What I did not mention is that is that I live in a condo with antenna restrictions. But I figure if I put the antenna under the eaves of the house, it will be virtually invisible except at the apex where the the feed wires enter the attic. I have purchased a B1-5K balun from Radio Works and plan to use it on the attic side of the wall. Ever thought of using a tuned loop (very small like a gamma match, or similar) driving a rain gutter? You might be able to hide the components behind it under the eaves. I am now using a Buddipole in the attic and it works, but I am hoping to get better radiation (and less telephone and TV RFI) by using a full length dipole and getting it at least a little further away from attic wiring, heating/AC ducts, etc. Also I am afraid to run more than 100 watts, not only due to RFI concerns, but from a fire safety standpoint as well. This, in parts of Britain, is called nit-picking (British nits seem to be unrelated to photometric nits). Anyway, any coupling from feed line radiation into nearby susceptible wiring can be suppressed with a current BalUn. Given the proximity of so many opportunities to distort the field, you are sure to suffer imbalance (the leading contributor to Common Mode). If these problems arise from the radiator's field, distance is the best solution. I just bought an Autek antenna analyzer which I think will come in handy. At least with a feed point in the attic, I should be able to make impedance measurements easily. So I would like to use a Carolina Windom, but my situation will not allow it. We have lots of tall trees in the back yard and I often look at them longingly, but realistically I think I'm just day dreaming, hi. Anyway, thanks for all replies. Ron Hi Ron, A thin wire with beige coloring could be nearly invisible (the keyword being "nearly" ... depends on the visual acuity of the antennazis). 73's Richard Clark, KB7QHC |