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Categories | Transverters | Down East Microwave 144-28 ( New 2010 Version ) Help

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KL7UW  Rating: 5/5 Jan 26, 2014 11:31  Send this review to a friend!
Very Satisfied  Time owned: more than 12 months
My L144-28HP DRX model is a custom-built for me by DEMI. It has two receive converters for dual polarity eme operation. But the transmit side is standard with 50w RF module.

I run JT65B on eme so freq. stability is a prime requirement. After warm-up of 15-min the heated xtal oscillator is only +5 Hz from being on 116.000,000 MHz. I ran full 50w on JT65 One min keydown/one min Rx for 30-mintutes and drift was only 6Hz higher (+11 total). This is excellent for a non-locked oscillator. I got 54w full saturated power output when new. Ran easy at 30w drive needed for my 150w amp and easily drives my 8877 to 1400w.

Since then I have started a business building kits for other hams:
http://www.kl7uw.com/kits.htm

I now have DEMI transverters for 144/222/432/1296/10,368

Ed KL7UW 
Product is in production.
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