Custom-built coaxial cables, assembled using low-loss Mil-spec RG-142 teflon coax, a TNC male right angle connector on one end, and a BNC male connector on the other.  Ideal for Garmin 430W WAAS installations when using a GA-35 antenna, or with any antenna having a female TNC connector. This cable can also be used in com, transponder/DME, or ADS-B UAT installations when the antenna has a female TNC connector and the radio a female BNC, or vice versa.

Less than the cost of a quality TNC connector alone!

* Custom lengths to 300 feet available

I also offer this cable in more flexible RG-400 in another listing.

***NOTE: This cable has a TNC (threaded BNC-like) connector on one end, with a BNC on the other. It is only compatible with radios and/or antennas with TNC connectors on one end, like the Garmin GA-35. Otherwise, I sell the more common BNC/BNC cables in another listing***

This auction includes up to 9 feet of premium 50 ohm RG-142 cable, a brand name BNC connector with a gold-plated center pin (center pin silver soldered for integrity and superior electrical performance and life), and a German-machined TNC connector with gold-plated center pin. In addition, each connector has heatshrunk strain relief. Custom-imprinted heat-shrinkable cable labels (up to 2) are also included on request, up to 10 characters long each, to be specified by the buyer at time of order. Labeling will allow you to keep track of the coax function behind your panel or in dense cable bundles, and can be unique to your aircraft!

RG142 vs RG400? Both cables are of teflon construction, and are double-shielded and silver plated. The difference is that the center conductor of RG-142 is silver-plated copper clad steel versus RG-400's stranded silver-plated copper construction. RG-142 has a slight performance edge over RG-400 and is 10 percent lighter. However, RG-142 requires more attention to assembly as it cannot tolerate stripping nicks, and it should not be used in environments where repeated flexing is encountered. I strip using professional calibrated tools and assemble under a microscope, so nicks are not an issue. I offer RG142 as a lower cost alternative for aviation installations where the cable will not flex, which makes it ideal for airframe installs.

I can also leave the second connector finished up to the final crimp, on request. This allows you to route the cable through tight places in your aircraft that could not pass a BNC connector, leaving a simple crimp termination that is done with an inexpensive tool (also available for loan on request). All tri-level cable stripping is done in my shop--the tough part.

Right angle BNC, blind mate tray, or straight TNC connectors are also available for additional cost--please contact me before purchase to make sure my stock can accommodate your request. I also have RG-393 coax available for ultra low-loss transponder or ADS-B installations.

If used for a Garmin 430W WAAS installations, a cable of at least 13 feet, or an additional BNC/BNC jumper of at least 6 feet, with a BNC coupler, is recommended to meet Garmin's minimum loss budget. If you need a custom cable more than 9 feet long, please contact me before bidding.

If being purchased for a transponder or DME installation, Garmin recommends that a maximum length of 8 feet (RG-142) be employed to insure proper operation. This recommendation would hold for other transponders as well. Generally, with transponders or com radios, the shorter the cable, the better. I also have teflon RG-393 coax for ultra low-loss transponder or ADS-B installations.

Why choose an antenna with a TNC connector? They are more reliable and resistant to vibration than BNC-connectored units.

On purchase, please specify the exact cable length, and the label text if desired. Note that custom cables will ship within 48 hours of order rather than my usual 24. This leaves time for inspection and test of the cables after manufacture.

I build each cable by hand, to order, using professional precision, calibrated tooling

I inspect each strip and solder joint under a microscope before proceeding

I only use RG-142-designated connectors from name-brand manufacturers, not cheaper RG-58 connectors which don't fit as precisely, or Chinese connectors with questionable gold plating and construction

I use thickwall adhesive heatshrink

I can label your cables

I can build custom lengths within 1/2 inch to suit your application precisely

I can partially finish the cable ends to facilitate your airframe routing

I can answer your aviation-specific application questions

Feedback Policy:

Please--if there is a problem or complaint, tell me so I can try to rectify the problem first! I strive for 5 star performance and a positive buyer experience. If you don't feel comfortable rating me a 5 across the board, please let me know why and give me a chance to fix any issues. Feedback affects my ability to provide affordable products more than you might think!

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