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Original GM3SEK/G3SEK Tetrode Boards


 

Boards are 95% assembled and configured for 4-250A tubes. If you plan on using different tetrode tubes, you'll need to do the math outlined in the printed manual I'm including. Includes R14 wire-wound adjustable resistor, heatsinks & mounting hardware for TO220 transistors, off-board connectors, 500-ohm wire-wound pot, 5k 50W chassis mount resistor, remaining discrete components, and Stancor P-8671 117V 50-60hz/36v/1A transformer. I can provide photos of the boards. I am asking $550 + Shipping. Send your zip code, and I'll calculate the final cost. I prefer Zelle/Venmo and USPS money orders, too. No PayPal. All items are sold as-is with no returns.

73! Mark KA6WKE - DM34st
Website:
Youtube:
Amateur Radio:
LinkedIn:?



 

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Are there more than one set of boards: i.e., are you selling multiple sets of boards for multiple amplifiers??

Or is this just one amplifier-set of boards?

TNX,

Steve K0XP


On 3/1/2024 6:48 PM, Mark Schoonover via groups.io wrote:
Boards are 95% assembled and configured for 4-250A tubes. If you plan on using different tetrode tubes, you'll need to do the math outlined in the printed manual I'm including. Includes R14 wire-wound adjustable resistor, heatsinks & mounting hardware for TO220 transistors, off-board connectors, 500-ohm wire-wound pot, 5k 50W chassis mount resistor, remaining discrete components, and Stancor P-8671 117V 50-60hz/36v/1A transformer. I can provide photos of the boards. I am asking $550 + Shipping. Send your zip code, and I'll calculate the final cost. I prefer Zelle/Venmo and USPS money orders, too. No PayPal. All items are sold as-is with no returns.

73! Mark KA6WKE - DM34st
Website:
Youtube:
Amateur Radio:
LinkedIn:?


--
See my QRZ.com page at


 

It's two?boards. One for control & the other for bias voltages.


On Fri, Mar 1, 2024, 20:15 Steve <k0xp@...> wrote:

Are there more than one set of boards: i.e., are you selling multiple sets of boards for multiple amplifiers??

Or is this just one amplifier-set of boards?

TNX,

Steve K0XP


On 3/1/2024 6:48 PM, Mark Schoonover via wrote:
Boards are 95% assembled and configured for 4-250A tubes. If you plan on using different tetrode tubes, you'll need to do the math outlined in the printed manual I'm including. Includes R14 wire-wound adjustable resistor, heatsinks & mounting hardware for TO220 transistors, off-board connectors, 500-ohm wire-wound pot, 5k 50W chassis mount resistor, remaining discrete components, and Stancor P-8671 117V 50-60hz/36v/1A transformer. I can provide photos of the boards. I am asking $550 + Shipping. Send your zip code, and I'll calculate the final cost. I prefer Zelle/Venmo and USPS money orders, too. No PayPal. All items are sold as-is with no returns.

73! Mark KA6WKE - DM34st
Website:
Youtube:
Amateur Radio:
LinkedIn:?


--
See my QRZ.com page at


 

Look on e-Bay.....