[BC] 30D transmitter...

[John Vodenik]

Hi Burt.  No, no, I was talking about the sensitivity of the receiver with a 
FET pre-amp.  I could bring it up from around 45 miles out.  Having the 
receiver antenna at 125 feet helped.  We had 2 (two) Cush Craft J-Pole 
antennas stacked, and on a rotor. Measured 9 dB gain omni from Cushcraft. 
At the bottom, on the 80D, was a 250 watt amp.into 2 eleven element beams. 
If interference got bad, we rotated the beams until the signal peaked, kick 
on the amp, and the interference found a new freq.  Man that was fun 
building.  The guy who owned the repeater couldn't fit behind the rack, so I 
made all the connections.  We even built a home made phone patch from telco 
equipment.  I wired, must have been, 30 relays to operate the thing. 
Knocked me out when it worked first time out.  Oh yea, good to meet you at 
NAB this year.

John @ VAO / Delano



----- Original Message ----- 
From: "Burt I. Weiner" <biwa at earthlink.net>
To: <broadcast at radiolists.net>
Sent: Monday, July 18, 2005 11:02 AM
Subject: [BC] 30D transmitter...


> John,
>
> Sounds like an intermod problem to me or at least motorboating.
>
> I used my direct fm'd 30D for my repeater transmitter.
>
> see:  http://wa6tdd.tripod.com/
>
> Burt
>
> At 01:52 PM 7/18/2005 -0400, you wrote:
>>From: John Vodenik <jvodenik at del.ibb.gov>
>>Subject: Re: [BC] Police stations (MW)
>>To: Broadcast Radio Mailing List <broadcast at radiolists.net>
>>Message-ID: <42DB6B10.D7A47CE4 at del.ibb.gov>
>>Content-Type: text/plain; charset=us-ascii
>>
>>80D's sure made great 2 meter repeaters, when combined
>>with a "G" strip receiver.  Ours in NW Indiana
>>could hear a gnat pass gas at 50 miles.
>>John @ VOA / Delano
>
> Burt I. Weiner Associates
> Broadcast Technical Services
> Glendale, California  U.S.A.
> biwa at earthlink.net
> K6OQK
>
>
>
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