E.F. Johnson 222-103 Roller Inductor 10uh - Electronic Components - BMI Surplus
EF Johnson Roller Inductor 229-201 / 0 - 10 UH / 3A | eBay
roller-inductor
Transmitting Variable Inductors
N4ZOU's Variable Inductor Design
G3YNH info: Variable inductors used in HF antenna matching networks.
Variable Roller Inductor Coil - JOHNSON 10uH - LINEAR AMPLIFIERS ANTENNA TUNERS | eBay
Amazon.com: MFJ-962E MFJ962E MFJ-962 Original MFJ Enterprises 1.8-30 MHz Versa Tuner III AirCore Roller Inductor Antenna Tuner - Handles 1500 Watts PEP SSB Amplifier Input Power (Replaces MFJ-962D : Electronics
G3YNH info: Variable inductors used in HF antenna matching networks.
Roller inductor making - YouTube
Cone-shaped roller inductor
E.F Johnson Roller Inductor 229-201 0 - 10 uH / 3 AMP | eBay
EF Johnson 25 uH High Quality, Silver Plated Roller Inductor from Broadcast Transmitter in Excellent Condition
Palstar - Inductors
Roller Inductor | Continuously variable roller inductor. It'… | Flickr
