I've never seen a reverse TNC connector and I do marine electronics for a living. Connector pin on male TNC and female pin on female TNC. This will not connect to any of the many standard TNC connectors/cables I have in my inventory. I probably should have taken a closer look at the picture, it's so bad for me, but in 21 years in the business I've never seen this. Beware. 3 stars because otherwise the quality was great.