SYNTOR CONTROL HEAD & CABLE INFORMATION
The 16 channel control
heads use a 16 position binary channel switch that selects the channel using
channel select pins F1, F2 F3 and F4. The
Syntor uses an interface IC that normally reads the channel select lines
individually, but when channel select lines 11 and
12 (pins 33 and 34) are tied to ground it reads PIN 4, 14, 13 and 5 in BCD
(Binary Coded Decimal) format.
The 32 channel Syntor uses an additional channel select pin (F5) to select the second bank of 16 channels.
Memory Expansion with a 16 channel Control Head
The SAB module is capable of 32 channels without any modifications to the SAB. In order to access the 2nd bank of channels:
Remove JU1101 (near the PROM
socket inside the radio)
modification only works with 16 channel control heads. See the SAB
Memory Expansion page for adding channel banks with other types of control