B&W

Barker & Williamson (B&W) Set of 5 JVL Coils JVL 10, JVL 15, JVL 20, JVL 40, & JVL 80 in Original Boxes Set #1

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MPN:: JVL
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Description

Description

Barker & Williamson (B&W) Set of 5 JVL Coils JVL 10, JVL 15, JVL 20, JVL 40, & JVL 80 in Original Boxes Set #1

This coil set is in excellent shape! Some appear to be new old stock! All are solid.

The Barker & Williamson (B&W) JVL coil set refers to the "Junior Variable Link" series of vintage plug-in air-wound transmitting inductors, a lighter-duty line from the mid-20th century (popular in the 1940s–1960s) for amateur radio use. These were designed for lower-to-moderate power applications (typically up to ~75–150 watts, compared to higher-power HDVL or TVL series), often in link-coupled antenna tuners, exciters, small amplifiers, or band-switching transmitters.The JVL series features:

Air-wound tinned copper coils embedded in plastic rib supports for high Q (efficiency) and stability.
A variable/adjustable link coil (center-tapped or similar) for optimized coupling and impedance matching between primary and secondary circuits.
Plug-in bases (usually ceramic or plastic) for quick band changes.
Some designs use dual main coils end-to-end with the link in between for certain bands.
Primarily for HF amateur bands (e.g., 10m, 15m, 20m, 40m, 80m, sometimes 160m).

These were marketed as "Junior" coils for experimenters, mobile/fixed setups, or lower-power rigs.JVL coils are collectible for vintage ham radio restoration, homebrew projects, or matching classic equipment (e.g., in old QST articles or handbooks referencing B&W plug-ins).

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