atcomsystems.ca/forum Forums Other TDM Phone Systems 1A2 and Comkey Telephones & Systems sanbar 4201a cards

i have a few sanbar 4201 cards laying around and i now want to use them with a 1a2 system. Does anyone know which pins are what on those cards? I know pins 3 & 18 are audio out but that's all i remember and i can't find my old manuals. any old timers out there remember? :banana:

i'm sorry i ment without a 1a2 system

I can provide you with the pinouts, but unless you have the KSU to support them, I doubt you will get anywhere with them. Remember that a power supply with 10 volts AC and 24 volts DC is required, not to mention the interruper with it's myriad of connections to the card slot.

I not sure you relize this or not but these cards are fm tuner cards and they should only have 3 pairs of connections, power, audio out & anttenna. If you look at the card the only pins being used are 3, 12, 15, 17, & 18. maybe this will help.

OOPS! You are correct. For some reason, I was thinking of 4200A cards, standard line circuit. I do know that pins 3 and 18 are the audio output and should be daisy-chained to pins 3 and 18 of all other slots in the KSU. The necessary voltage to power the card are already present in any slot (B Battery), so you don't need to worry about that part. I don't recall an external antenna input, but if there is one, it would be the CO line input for that slot.

Caution! Pins 3 and 18 are normally wired with -24 volts talk ("A") battery! Make sure you check and if it is present, disconnect it. It's pretty easy to do it at the power supply by pulling the wire off of the "AB" output terminal. Make sure that you tag it so nobody accidentally hooks it back up. The MOH card will be gone for sure if that happens.

Unless you have a manual intercom card (401A/B) in the system, disconnecting A battery will not have any effect on the system operation.

Does anyone know where I might find a San Bar
FM Radio card?