K1KW 2 X 813 modulated by 2 X 572B's

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Tom WA3KLR:
Absolutely beautiful Chuck.

Steve - K4HX:
Bar rig. I love it!

Thanks for sharing.

KL7OF:
very nice...look forward to hearing you from the bar....Steve

Chuck...K1KW:
A little more progress today.  Finished the modulator which is on the same chassis as the RF to keep this thing compact.

Added a spark gap which is visible behind the 572B modulators through the front window.  Should be interesting to see when they arc.

Haven't done the audio driver yet but modulated the rig with 60Hz from a 120V CT transformer driving the grids and at 60 Hz it looks pretty decent.

One issue is that the mod transformer buzzed a bit with that 60 Hz drive.  Not sure how it will be on talk back with audio.

I will have to remove the RF/Audio deck so I'll take a pic under so you can see how I did all the mechanical drives. 

Looks like there is a bit of interest in this stuff.  Haven't been on this board for over a year now but happy to share.

Next rig after this is an amplifier using FOUR 304TH's in parallel, grid driven. I'm taking bets on if I can make this work on 160 through 40 M

Getting bored....I guess

WD8BIL:
Awesome work Chuck! Can't wait to hear it!

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