> Thanks for all the replies. I ordered the DB224 cut for the ham bands, so
> the swr should be flat. I am going to take an antenna analyzer to the site
>
> and see what it says. I am going to replace the RG8 jumper with some 9913
> and eventually some !/2'" superflex. I am not concerned with de-sense at
> the site as I do not rx any vhf there, I just rx the uhf link tx from the
>
> site where the voter and all the uhf link rx are which is 8 miles away.
> The
> 375w tx just hooks to the feedline and then to the antenna. I am using a
> pl259 only because that is what Motorola puts on their 357 watt Micor amp.
>
>
> ::Ugh. The circle batwing strikes again.
>
> I have a brand new harness for the antenna so if the analyzer reports bad
> news the harness will be replaced.
>
> ::Well, the harness is made of silver-plated, double-shielded coax. I
> hope that's what you have to replace the original one with!
>
> Probably will do that anyway. At least
> the antenna is on a building not a tower. I will look at the Bird site and
>
> make the correct length jumper so when I remove it the tuning should not
> be
> affected.
>
> ::As I recall, the "Bird simulator" section of coax is 4" long. But of
> course, if the VSWR were flat, then it wouldn't matter.
>
> Actually adding some remote metering would be cool and I could
> just leave the meter line section in. There should be some remote metering
>
> equipment surplus by now. Has anyone converted a 1kw commercial fm
> broadcast tx to the 147 mhz range?... Another project. That way I can stop
>
> using a commercial 2-way tx.
>
> ::Vacuum tube units, yes. Solid-state, no. It would be quite a stretch
> to pull even a 107.9 MHz amplifier up to 147 MHz without replacing circuit
> boards. But it's easy to change a few components in a tube amp and be up
> and running quickly.
>
> ::WB2WIK/6
>
> _______________________________________________
> Amps mailing list
> Amps@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
|