[Icom] 3210

[Gary Fiber]

Loren,

I found an easier place, had forgot this until I again looked at the 
schematic. Have a look at Pin 4 of the mic connector. The SQLS line is tied 
there through a transistor switch.
If there is no other reason the go into the radio just use the mic 
connector. You have the PTT there, mic input through the mic amp, though 
doubtful a CTCSS tone will pass through the mic amp, receive speaker level 
audio on Pin 8 of the mic connector, SQLS on Pin 4,  seems everything you 
might need is right on the mic connector. If you need to send a CTCSS tone 
then you might need to inject your tx audio after the mic amplifier stage, 
I used to specify the wiper of the deviation pot, most generally had good 
luck there. If you controller can't deal with speaker level audio grab 
detector level audio from Pin 9 of the TK10420  2nd IF chip

I don't have a circuit board layout for the 3210.
J-10 looks like it plugs into J 3 on the main unit. It should be a 15 pin 
connector with Pin 15 having 13.8 volts applied when the power is on. 
Usually Icom numbers the jacks as " J " and the mating plugs as " P " 
something. In the late 80's it was not uncommon to see both jacks and plugs 
shown on the schematic labeled as " J " something
Pin 6 is a ground connection on that same connector and Pin 5 is the SQLS 
line. The jack numbers should be on the circuit board

I hope some of this helps.

 > >got a small query, I have a 3210 that I want to use as a remote
> > >receiver/transmitter on a repeater. Anyone know where there may be a good
> > >spot to pull COS from?
> > >Many thanks. N2LSJ

Gary Fiber K8IZ
GROL PG-19-6691
Washington State Resident