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Posted by Scott Dorsey on 10/05/89 11:44
blackburst@aol.com <blackburst@aol.com> wrote:
>Scott Dorsey wrote:
>>
>> Yes. You are, after all, using a TV frequency for the wireless. So
>> using a TV antenna tuned to that channel can be a good choice.
>
>Any make/model that comes to mind?
Whatever model Jerrold (or Winegard, or whoever your local dealer carries)
sells for the channel of interest. The antenna will have some gain rating
on it; the higher gain antennas will be more directional.
>> Running 70V audio through a power conduit is not a real good idea, but
>> you can do it, the code will allow it, and it can work.
>
>I'm thinking counduit along the top of the wall. But then I have 40
>feet of asphalt to cross to get to the pole.
You may not need conduit, depending on local code. You MIGHT be able to
use outdoor low voltage lighting cable, although in some places it is not
legal to run 70V circuits over class II wiring. In other places it is.
>Yes. We used the same transmitter whn I did the DNC for a news network,
>and I was a "pointer", aiming it at the receive antenna. The ballclub
>camera antenna can't really be easily aimed.
That's bad, because it means you're going to need a WHOLE HELL OF A LOT
more power into an omni antenna than into an antenna with gain. 20 dB
of antenna gain is the difference between a watt and a hundred watts of
input power in actual field strength.
I'd first make sure the transmitting antenna you are using is really an
omni and not a misapplied gain antenna....
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
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