TH Class B, & come on FCC!

Ben Ellison

Ben Ellison

Panbo editor, publisher & chief bottlewasher from 4/2005 until 8/2018, and now pleased to have Ben Stein as a very able publisher, webmaster, and editing colleague. Please don't regard him as an "expert"; he's getting quite old and thinks that "fadiddling fumble-putz" is a more accurate description.

4 Responses

  1. awboater says:

    What is being referred to as European connectors look like commercial-grade BNC and BNC and mini-SMC connectors.

  2. del (uk) says:

    I think you’ll find that the connectors on the box are conventional TNC and BNC. On the ends of the flying leads it looks like SMA and BNC, but it is more difficult to tell. Either way, they are standard connectors that can be sourced quite easily.

  3. Sandy says:

    When I finally got my minimal AIS receiver working here in the Annapolis area, I was a little surprised to see a few targets without names. I’m guessing these were foreign visitors with AIS B transmitters.

  4. Marcus AAkesson says:

    I have sailed 1200 nm this summer with the TH CTRX. It works very well and the install was very straight-forward. I use it interfaced with a Nobeltec charting system but it of course works completely independent as well.
    It has a BNC-f for the VHF antenna and a TNC-f for GPS. The included short leads provide a BNC-m and TNC-f, if your cables are thicker than the rubber grommet accepts. In what way could they be described as “exotic” or “European”? “Bayonet Neill Concelman” and “Threaded Neill-Concelman” are certainly extremely common, and also superior to the PL connector that should be avoided. Paul Neill of Bell Labs and Carl Concelman of Amphenol would be offended…
    The unit ships with a DC/data cable that is used for basic installs, providing bare leads for DC supply and a DB9 RS232 serial connector. If You need the additional RS422 NMEA in/out connections you can add them in the DB15 connector or make your own cable.
    There are already around 100 ClassB transponders in Scandinavian waters. The range between 2 ClassB is around 10nm with mast mounted antennas, less with motorboats or pushpit mounts.

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