Custom BNC to SMA RG-400 GPS ADS-B GDL39 Cable


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Current Price: 28.99 USD

Custom-built coaxial cable, assembled using low-loss Mil-spec RG-400 teflon coax, a BNC male connector on one end, and an SMA male right angle connector on the other.  Ideal for a Garmin GDL39 external antenna using any antenna having a female BNC connector. This cable can also be used in com, transponder/DME, or ADS-B UAT installations when the antenna has a female BNC connector and the radio a female SMA.

Less than the cost of the quality connectors alone!

This auction includes up to 9 feet of premium 50 ohm RG-400 cable, a Suhner German-machined SMA connector with, and an Amphenol or Winchester BNC connector, each with gold-plated center pin. In addition, each connector has a double-wall adhesive lined 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!

Right angle BNC, Mil-spec female/female BNC couplers, 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.

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.

Why buy from me rather than a mass cable producer?

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-400-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!

US Shipping and Terms:

Payment by Paypal--if this is not acceptable for you, please contact me to suggest what approved method meets your needs.  Contact me if you need special shipping or approved payment arrangements not listed here.

International Shipping and Terms:

International Buyers – Please Note:

Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer’s responsibility.


Please check with your country’s customs office to determine what these additional costs will be prior to bidding/buying


VAT and Customs charges are normally collected by the delivering freight (shipping) company or when you pick the item up – do not confuse them for additional shipping charges.”


“We do not mark merchandise values below value or mark items as ‘gifts’ - US and International government regulations prohibit such behavior.”

International shipping and handling costs include insurance against damage, paperwork, and transit to a post office within a business day of payment clearance. Payment by Paypal--If this is not acceptable to you, please contact me to suggest what approved payment method meets your needs. USPS Priority Mai International will be used, if available, as the most economical shipping method, with delivery times usually 2 weeks or less. I ship approximately 30 percent of my aviation items internationally!


Custom BNC to SMA RG-400 GPS ADS-B GDL39 Cable


Click here to purchase or contact the seller of this item on eBay