[CQ-Contest] Re: [TowerTalk] TH7DX INFO

T. A. Russell n4kg at juno.com
Wed Mar 19 22:15:49 EST 1997


Angle of radiation is a function of antenna height NOT boom length.

Yes, a longer boom (higher gain) antenna will have a narrower pattern
in the vertical plane but the high angle cutoff of both antennas is well
above the maximum angle that will propagate on the high bands so,
I repeat, the angle of radiation will be determined by the antenna 
HEIGHT and NOT boom length.

de Tom - N4KG
.
On Wed, 19 Mar 1997 08:47:15 -0600 Lee Buller <k0wa at southwind.net>
writes:
>Ok...I have used both and I can tell you that the TH7 will get though 
>better
>than the TA-33....BUT....the TA-33 will get through eventually.  I 
>have a
>TA-33 up right now and the TH6 is going up as soon as the weather 
>breaks, I
>get my rotor rebuilt, and get some schedule 80 masting. (I'm gonna get
>comments about the mast, I know)
>
>I read the thread here about front to back and forward gain, but no 
>one has
>really brought up the issue of angle of radiation.  For DXing...well I 
>would
>put my money on the TH7 or TH6..rather than the TA-33.  Eventually, 
>you will
>get there, but you won't be one of the fast dogs.
>
>So, what about angle of radiation between at 14 foot boom and a 24 
>foot boom?
>Put that in your modeling program and share it with us all.
>
>With great respect...
>
>Lee
>k0wa at southwind.net
>
>
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