Topband: [TowerTalk] Antenna Modeling needed 160 vertical

[Ed Stallman]

I would like to thank everyone for their help and wisdom . I do have 
the ON4UN low-band book edition 4 and from the emails I've received 
on and off the reflector I'm starting to put it all together in my 
head. I will have the 4 inch irrigation tubing here before the 
weekend . hope to join the fun soon. GL everyone with Gloriosos on top-band

Thanks again Ed N5DG






At 04:32 PM 8/29/2009, Ed Stallman wrote:
>Hello Towertalkers
>
>My plan is to construct a 160m vertical using 4 inch irrigation
>tubing 90 ft tall, with 4 top loading wires spaced 90 degree and
>sloping down at 45 degrees . My target freq is 1.830 but would like
>to make the top-loading a bit short so that the antenna was resonant
>about 2 MHz.  Then put a small (a few uH) loading coil at the base to
>bring the antenna to resonance at the desired frequency.  I am
>placing the antenna 300ft away from any other structure , hoping for
>no interaction . I'll start with 32 ground radials and add more
>later, not sure on the length ? 90ft or 130ft ?
>
>two questions
>how long will the top-loading wires be for resonant at about 2 MHz
>using # 14 copper insulated wire?
>how long should I make the ground radials ?
>
>Thanks Ed N5DG
>
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