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[AMPS] Edge wound .1-40 uH Variable from SSN - comments-?

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Subject: [AMPS] Edge wound .1-40 uH Variable from SSN - comments-?
From: (Rich Measures)
Date: Fri, 12 Feb 1999 08:47:45 -0800

>Anyone with comments on the above mentioned inductor? How would this
>thing work in a 
>a. 3CX1500A7 amp
>b. 3CX3000A7 amp
>covering 160-10m ? Or should I wound again my own coil?
For a 3CX3000A7, the approx. tank circulating current with a Q of 12.5 is 
2.5A x 12.5 = 31A-rms.   Since contact dissipation is:  P=I^2 x R, might 
not 31A be a bit much to expect from 10A-rated contacts?.   

-  later, Carsten

>­ 2-10 kw Power Handling ­
>­ Taper Wound Front End ­
>­ Edge Wound Coil All Silver Plated ­
>(IRV)RI-40: It's here at last! The ultimate variable inductor. Isn't
>your tuner or amplifier project worth the very best? Made exclusively
>for Surplus Sales of Nebraska.
>.1-40 uH variable edge wound inductor. Taper wound lower end (higher Q)
>for better results beyond 20 MHz. Enough inductance for work below 160
>meters too. All rf surfaces are thick silver plated. Quad 10 amp 
>contact sets on all rotating connections; coil to rotar; rotor to shaft
>armature; shaft armature to end 
>plate contacts. There are no weak links with our mil-spec design.
>Perfect for 2-10 kw antenna tuners, tank network for amplifier or
>anywhere a larger, high Q, variable inductance is required. Be sure to
>use our Turns Counter (SHW)TCV.
>5" wide, 5-1/4" high, 12-1/2" end to end, maximum dimensions. 1/4"
>shaft. Optional end stop kit for motor drive schemes. Add $ for kit, pn
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R. L. Measures, 805-386-3734, AG6K,  

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