View Single Post
  #30   Report Post  
Old May 2nd 09, 12:24 PM posted to rec.radio.amateur.antenna
Dave Dave is offline
external usenet poster
 
First recorded activity by RadioBanter: Jul 2006
Posts: 797
Default Resonance and equilibrium


"JIMMIE" wrote in message
...
On May 1, 7:37 pm, "Dave" wrote:
I dont know if Dave built it or not but I did and tested the beamwidth
just as you said and got 360 degrees. Rotating it had no effect at all
on signal strength. I tried it on 2M and couldnt hit the local
repeater with 1 watt normally I can reach it with 100mW. I would say
this classifies the antenna as a dummy load.


no, i am waiting for the final tweaked design. if you have built one to
art's specs then you are probably measuring just the side/back lobes, which
is a very good sign. if it has a pencil beam on 160m, then by the time it
gets to 2m the beam will probably be so thin that it will be like a laser
beam, so you'll have to be pointing it VERY accurately on the repeater. so
go rotate it again, very slowly and carefully, and don't forget to aim it in
elevation also!