[GreenKeys] "Thats a transmitter" (was Collins 709D-1 FSK keyer)

[Sheldon Daitch]

In the high power MW broadcast market, the two biggies were Continental and Harris.


Harris Broadcast built a few DX-2000 broadcast band transmitters - one went to Qatar and another went to Vietnam.


I saw the DX-2000, 2000kW output, on the Harris test floor, doing a heat run prior to shipping to Qatar.


In fairness, the DX-2000 is made of 10 200kW power blocks - five power blocks feeding a five input combiner, a second channel of five power blocks feeding another combiner and those two combiners fed into another combiner for the full 2000kW.


All solid state.


73,

Sheldon



________________________________
From: GreenKeys <greenkeys-bounces at mailman.qth.net> on behalf of Duncan Brown <duncanancy at earthlink.net>
Sent: Friday, November 21, 2014 2:15 AM
To: Nick England
Cc: Greenkeys
Subject: Re: [GreenKeys] "Thats a transmitter" (was Collins 709D-1 FSK keyer)

But does it do AM??

Duncan
K2OEQ

On 20-Nov-14 18:07, Nick England wrote:
Heh - that's not a transmitter, THIS is a transmitter...
http://www.navy-radio.com/commsta/cutler/naa-qst-3.JPG

AN/FRT-31 - 2 megawatts output CW or RTTY feeding 62 miles of antenna wire......

Nick K4NYW
www.navy-radio.com<http://www.navy-radio.com>

On Thu, Nov 20, 2014 at 5:42 PM, Duncan Brown <duncanancy at earthlink.net<mailto:duncanancy at earthlink.net>> wrote:
That's not a transmitter,

_*This is a transmitter:*_ http://www.collinsradio.org/821A/

Collins 821A: 250KW (1000KW PEP) output






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