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- Date: 13 Mar 89 16:07:03 GMT
- From: oliveb!pyramid!prls!philabs!briar.philips.com!rfc@apple.com (Robert
- Casey;6282;3.57;$0201)
- Subject: tiny-2 tnc fix
-
- copied from packet:
- Msg# TSP Size Read To @ BBS From Date/Time
- 25853 BN 1240 0 ALL N2EZG 8903/1617
- Subject: Paccomm Tiny-2 Factory Mod
-
- Here is the "Factory" fix for Pac-Comm Tiny-2's & Micro-Power 2's
- that have become hard of hearing. It seems that Pac-Comm has some
- boards out that work fine when new, but with age the tnc requires
- a huge amount of Audio input from the speaker jack or it won't
- decode properly. They are lost as to what is deterioating in the
- boards but offer this fix to its customers.
- It is quite simple and very neat, all parts are mounted on the
- under-
- side of a 16 pin IC socket, the Modem chip TCM3105 (U16) is
- removed,
- the modified socket is inserted into existing socket on TNC's
- board,
- and the modem chip is re-installed.
-
- Parts Needed:
- 1 - 16 pin IC socket
- 1 - 2222 Transistor NPN (EGC 123AP)
- 2 - 10000 ohm 5% resistors (brown-black-orange-gold)
-
- Instructions:
- Solder 1 resistor to Emitter, other end of resistor to pin 12
- Solder 1 resistor to Base, other end to pin 2
- Solder collector to pin 5
- >EndFile<
-
- Copied from the QRZ! Windows Ham Radio CDROM
-
-