Batboard

Hi Guys,

I have a Micor Touch Tone Decoder card here. There are two circuit boards screwed together seperated by a standoff.

It has the following model numbers on it :

QLN7029A (on side w/ locig devices)
QLN1999B (on front silver metal piece w/ handle)
QLN5467B (on other circuit board)

It has a bunch of jumbers that go from numbers i.e 3,8,7 *, # to pins on some of the logic chips. The pins on the chips are labeled D1, D2, D3 etc.


Any idea what this is used for and what whe jumper settings are. After searching for a while the only think I could come up with was an eBay auction for a similar item.

Thanks,

Tim

I think you will find the numbers are the DTMF digits
that will be selected to be decoded. The D1, D2, etc
are the digit positions of the DTMF digits. Like if the
number 4 was connected to the D1 position, then 4
would be decoded in the first digit.

Jim

GEMOTO wrote:Hi Guys,

I have a Micor Touch Tone Decoder card here. There are two circuit boards screwed together seperated by a standoff.


It has a bunch of jumbers that go from numbers i.e 3,8,7 *, # to pins on some of the logic chips. The pins on the chips are labeled D1, D2, D3 etc.

Thanks,

Tim

Micor stations with model suffix "SP318" were equipped with DTMF decoders for microwave interface that provided repeater set up/knockdown, multiplex connect/disconnect, multiplex channel monitor, and Pl/DPL monitor.

Micor stations with model suffix "SP319" were equipped with DTMF decoders for repeater setup/knockdown via RF or wireline. Coding could be strapped for 2 to 7 digits. The setup function times out one minute after least squelch activity.

Thanks! I'll have to take a look at the model number of the station I have to see if its usable.

I have a spare copy of the manual for this board in the original Motorola binder.

We really should look at setting up some kind of archive for this hard to find information.

George