Don't pitch them yet. If all else fails, they are programmable
devices and can be recycled.
I'll take them if no one else needs them. I can read what's in them
and see if I can make sense out of it.
73, Dick, W1KSZ
-Original Message-
From: larryjspamme...@teleport.com lar...@teleport.com
Sent: Mar 27, 2010 4:30 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Anyone familiar with this NPC 243 ID'er?
I picked up what appears to be a bunch of base station / Repeater ID'ers. I
have no other clue as to anything else that they might be. They're an NPC
model 243 - I haven't found anything on the web about them. They are a circuit
board mounted in a small box (6-1/2 X 5-3/4), which is a little smaller than
an S-COM 5K, 6K, or similar box, and the box is mounted to a 19 wide rack
panel that is 1-3/4 high.
The circuit board has four-Mitsubishi PROMs - with cover labels over the
windows, and they've been marked as 1, 2, 3, and 800 Hz. The PROMs
labeled 1, 2, and 3 are 28-pin ICs marked MSL2764K and also have numbers that
appear to be 82 and 83 date codes. The 4th PROM labeled 800 Hz is a 24-pin
MSL2732K IC with an 83 date code.
The circuit board has a connector with a ribbon cable that goes to an 18-pin
terminal strip on the back of the box. The front of the rack panel has a small
opening for a small circuit-board-mounted speaker, a front-panel hole for a
screwdriver adjusted AUDIO ADJ. pot that's on the circuit board, a green
ON LED, and a TEST push button. There are two - seven position and one -
five position DIP switches on the circuit board, as well as several movable
2-pin jumpers. I see several other things on the circuit board like a
3-terminal voltage regulator IC, an LM380N IC, and about a dozen other 14 and
16-pin ICs.
Anyone familiar with these units? Or should I just chuck them into the
dumpster?
Larry
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