For sale is onegiant variable roller inductor tank coil designed for large RF currents and high voltage
HI Quality, state of the art product, GOLD PLATED CONTACTS.
Gears at the both ends of the shaft.
The best roller I've ever seen!
US QST magazine letter format is under the roller
Dimensions: 24.5x17.5x16.0 cm
Overall: 33.5 x 17.5 x 16.0 cm
Diameter of PTFE rods: 22.5mm
Weight: 4 KG
135 x 130 mm (outer diameter) - 22 turns CuAg flat wire 12.5 mm x 2.5 mm - space between turns 2.4 mm
At the ends of coil, spacing is doubled (7.5 mm), look at the photos please.
I can't measure the inductivity, I suppose it's cca 20mH.
AS IS! Please look at the photos carefully before buying. What you see is what you get!
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I collect tubes and tube gear for more then 35 years and I start to sell recently, please be sure to check my other items and visit my eBay store for more rare NOS tubes and parts.
I have more than 250000 NOS tubes in stock and just small part is listed here, if you are interested in any specific tube or part, please send me message.