[Amps] Tour of an Analog TV Transmission Facility

[John Lyles]

The narrator/host is an obnoxious sort. I have watched his tear down of 
a Rigol spectrum analyzer, drove me nuts watching him try and second 
guess everything, and some of the time he was obviously wrong.

Australian broadcasting took a lot of care at that facility, very clean. 
Even inside the NEC tetrode cavity, not much dust evident.

In 2010 we dismantled a solid state ch 11 VHF high band analog in 
Arizona, for parts. It was 44 kW Larcan, and had many pallets with 
MRF151G-like FETs. We had to remove everything and get it off the 
mountain near Tuscon. The rig turned out to be in terrible shape, 
transistors and boards with burnt parts, and filthy inside. Lots of dead 
bugs in there. Air filtration was gone. The station had run it into the 
ground, waiting for the digital transition. I don't think it was capable 
of 44 kW combined anymore.

I was able to remove a bunch of the coax pieces, the splitters, couplers 
and combiners, and got a bunch of large Bird loads out of it but most of 
the RF amplifier boards and power supplies were scrapped last year to 
regain space. I reused much of the 3 1/8 inch coax for my test facility, 
from driver to final stage. We're at 201 Mhz, close to NTSC ch 11.


Message: 2
Date: Fri, 17 Jan 2014 19:36:41 -0000
From: "Chris Gare" <chris at gare.co.uk>
To: <amps at contesting.com>
Subject: [Amps] Tour of an Analog TV Transmission Facility
Message-ID: <015b01cf13bb$753e4120$5fbac360$@gare.co.uk>
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http://www.youtube.com/watch?v=mR_wJkxKSXU&feature=youtu.be&t=22m32s

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