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Forums » Tech and Talk » Technical » Ham Radio » Ooops, there goes my bargain DVM!
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« Happy 153rd Birthday, Nikola Tesla  
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Ender3rd

join:2001-07-15
East Granby, CT
·Cox HSI

reply to drjim
Re: Ooops, there goes my bargain DVM!

Click for full size
Thordarson CHT-300
That rig is actually an "evolved" Viking One. When the internal modulation transformer shorted, I stripped it down to a simple RF deck and replaced the 4D32 with three 6146B final tubes running at up to 750 VDC. I use a separate modulator deck built up with a pair of 811a's running at up to 1500 VDC into a Thordarson CHT-300 watt multi-match transformer.

The Viking used to reside in a 6 foot rack next to the homebrew transmitter, but it was really under-utilized in the basement. So, over the past month I rebuilt it into a smaller rack and moved it upstairs to the more frequently used station. My wife's only comment was, "Is that going to be staying there?"

Above is a picture of the modulation deck as it was being rebuilt.
--
My Jeep is not an SUV. Your SUV is not a Jeep.


drjim
Premium,MVM
join:2000-06-13
Torrance, CA
clubs:
Cool! I thought the knobs and VFO dial had a familiar look to them.....
--
One man's Magic is another man's Engineering.
-
Forums » Tech and Talk » Technical » Ham RadioSunspot »
« Happy 153rd Birthday, Nikola Tesla  


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