RF Inductors, Capacitors, & Contactors


Kintronic Labs manufactures a complete line of fixed and variable inductors ranging in value from 5uH to 150uH and in current rating from 10A to 300A or higher. The standard fixed and variable inductors having a current rating of 60A or less are silverplated whereas those rated 80A or higher are unplated unless requested by the customer. Fixed inductors that are 100A or less utilize a clip or clamp for adjustment depending on the current rating. Fixed inductors rated 125A or higher are designed with a more robust radial arm adjustment. Variable inductors having a current rating from 20A to 80A utilize a center shaft adjustment that controls a spring-loaded roller wheel contact.


Kintronic Labs can supply Fixed and Variable Comet, Jennings, and Mica capacitors. Comet and Jennings capacitors include vacuum and non-vacuum capacitors, as well as insulated knobs for control of the variable capacitors. All capacitors are available in a wide range of standard values.


Kintronic Labs manufactures a complete line of single pole, double throw or double pole, double throw RF contactors ranging in current rating from 40A to 200A and in voltage rating from 20kV to 80kV. The RF contactors with current rating between 40A and 100A utilize solenoid drive requiring a short duration 110VAC or 220VAC pulse. Solenoids are available such that AC voltage can be field changed between 110 and 220 VAC. The RF contactors rated for 100A or higher utilize a DC linear actuator that requires a separate drive circuit to convert AC to DC drive.

Repair Services

Engineers and technicians at Kintronic Labs provides repair services and support for broadcasters, telecommunications, and other RF applications.

You have a radio broadcast or communication antenna system, or some sort of RF system for your plant – with regular upkeep, it works just fine most of the time.

But one overcast, cold morning, something goes awry – your system either isn’t working at all, or some component is out of tune and causing issues with general operation.

While Kintronic Labs offers complete repair services for RF contactors, inductor assemblies and related components, some of the more common repair services include:

AM/FM Antenna Repair & Refurbishment
RF Components Repair & Restoration
Lightning Damage (Isocouplers)
Isocoupler Servicing
In some cases, we are able to temporarily install a component while your part is being fixed, allowing you to stay on air while repairs are being made.

Engineers and technicians at Kintronic Labs have seen many issues crop up in our 60+ years of serving the terrestrial AM broadcast industry.

As new systems, technologies and applications of RF systems grow, so do the technical challenges – factory-trained engineers at Kintronic Labs stay on the cutting-edge of this technology and are able to deliver actionable solutions to any type technical issue you may be experiencing.

Storms and power outages, especially lightning, can also wreak havoc on your systems. And if any remodeling or construction work is going on around your antenna or other outdoor components, accidents and mishaps do happen.

Quotes for repair service are free – your only cost is shipping your component to and from our facility in Tennessee. In some cases, we can provide a quote through pictures but it all depends on the part and the issue.

In addition to our factory repair services, we’re also available to come to your site anywhere in the world to diagnose and get your system back up and running.

If you’re experiencing a technical issue with an antenna system, isocoupler or some other RF component, do not delay – every hour your down costs you precious time and money.

Kintronic Lab engineers are standing by to assist – please contact us here, or call us directly at (423) 878-3141 to discuss your system’s issue today.

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