====== Linking Tait 2010-II to PacComm Tiny-2 ======

===== 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 [[https://www.chiark.greenend.org.uk/~sgtatham/putty/|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:

<code>
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
</code>

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.

===== Tait 2010-II =====

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

<code>
            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
</code>

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!