Linking Tait 2010-II to PacComm Tiny-2
I aquired a Siskin Tiny-2 clone from eBay, along with a DB9 female to female cable and a USB to Serial adapter. The lights came on when I applied power, but Putty just showed gibberish when I tried to connect. The Tiny-2 manuals are readily found online, and claim that the standard 8N1 settings should work, but I ended up needing:
- 19,200 baud
- 7 data bits
- Even parity
- 1 stop bit
If that still doesn't work, open up the case and check for a Terminal jumper near the front left of the board and check the selected speed!
Once configured and powered on, the version information is displayed:
PacComm TINY-2 Packet Controller AX.25 Level 2 Version 2.0 Features: KISS PERSONAL MESSAGE SYSTEM V 3.0 CLOCK CHIP SUPPORT CWID Release E1.1.6D4 September 18, 1990 - 32K RAM
Perhaps unsurprisingly for a device that's over 30 years old, the 3V lithium backup battery is dead - a CR2032 and holder should fix that.
Some of the Taits have an external interface board which brings out all the audo signals nicely - mine didn't Instead it had a 15 pin connector with an almost bare board. With help from various OARC members we managed to work out the required connections from the DSUB to the 5 pin DIN on the Tiny-2
Tait Tiny-2 PTT Pin 2 Pin 3 TX Audio Pin 3 Pin 1 RX Audio Pin 5 Pin 4 Ground Pin 4 Pin 2
This let me receive packets, and transmit test tones, but normal packet sending didn't happen. I eventually realised the Tiny-2 is expecting squelched audio for DCD (Data Carrier Detect) but the feed from Pin 5 was not squelched. There are various external DCD circuits to be found online, but for now I've just taken the External Speaker audio that's available on the power connector!