Hi John, Circuitry wise there have been some changes implemented to better the RF and voltage stability and add a dedicated PL Tone input, however, the basic circuitry remains the same. The new board is obviously much smaller, thinner, reverse polarity protected, and includes a header. When we released the prototype, I advised that we may build a revised product; and since that time there have been folks asking about it. Also since then, a lot has happened in my life (divorce) and I simply didn't have the time and resources available to finish it. Lately, personal things have drastically improved and I'm able to concentrate on finishing many projects, this one being near the top of the list. In summary, there is nothing wrong with the unit you have. It's just not as small and pretty as the new ones will be. :) Kevin Custer Repeater Builder (the company) Yahoo! Groups Links
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