Roatry Variable Coil, Variable inductor. Coil aerial tuning with motor. 1-30MHz For Sale

Roatry Variable Coil, Variable inductor. Coil aerial tuning with motor. 1-30MHz
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Roatry Variable Coil, Variable inductor. Coil aerial tuning with motor. 1-30MHz :
$44.76

Roatry Variable Coil

: \"Motorised roller inductor from Marconi AD307 HF aviation transmitter (1958).
This is the PA anode π-network inductor. Unused turns are shorted. The transmitter was designed to be connected to an end-fed wire antenna of prescribed length. Fixed value mica capacitors were selected according to transmission band by means of a rotating turret. Motor operation was controlled according to antenna power factor by means of a phase bridge at the output terminal..... \"

The winding consists of a silver plated copper Rotates about 1 mm . Coil diameter approximately ca. 35 mm

Inductance range from 0.5 to 20 uH

Length of the component approx 110 mm


Last photo is just one example of use.

Highest Quality and Precision.

Military quality .

The visual condition, please refer to the attached pictures.

Other shipment variants possible. Please contact me.Private sale, no redemption, warranty or guarantee under EU law.
Of course, I bunch of different sales (max.7 days) in one package to save postage costs ..


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