[Alinco] Fw: pinouts on the Alinco DR-235

[Ray Brown]

  This is from another list, but just in case anyone here has a similar model radio,
or even a DR-235, and wanted to wire it up..

                Ray, KB0STN





----- Original Message ----- 
From: Randy Fisher  <wb9vle at indianadata.com>
 
I put a Alinco DR-235 220 mobile on service bench today. 
 
Below are the necessary connections to make the DB-9 connector work in a repeater environment 
or a Remote base. I'm using a  service monitor and a HP "TIMS" set to make the measurements.
 
All test were made on the DB-9 Acc connector on the back of the DR-235. with hand mike removed, 
it is live when using the DB-9 for Push to Talk.
 
DB-9 Pins back of the DR-235 Alinco.
 
1 COR > This is an Open collector output goes LOW (Ground), when the receiver is receiving. 
    May need a pull up resistor.
2 Not used
3 Not Used
4 Audio Output >  I injected 3.5 KHz. (1000 Hz. Tone) deviation on 223.500 Wide band, and 
    audio output was -19.9 DBM. With a 600 Ohm load.
5 Ground
6 Not used
7 Push To Talk  <  Ground for PTT
8 Not Used
9 Audio IN <  I injected -18DBM ( 1000 Hz. Tone) into to pin 9, keyed the transmitter, and 
    received 3.5 KHz. Deviation on the service monitor.
 
All of these test were made without any mod's to the radio.
 
It was confusing to me to look at the user's manual (Page 36), the pins for the audio were marked  
Data 1200 and 9600 baud In and Out, these pins are used for Serial data with the EJ-41U packet board.
You had ask about the Discriminator output, this would require hacking into the radio, if your needs 
require it. Most controllers will work with squelched audio on these connections.
 
The COR output (pin 1) follows the receiver, if you are programmed for carrier squelch, pin 1 will go
low with a carrier, if you have PL (CTCSS) decode turned on, it ignores the carrier and will go low 
only with the correct PL (CTCSS) 
 
 
I hope this helps, 
 
Any questions please let me know.
 
Randy WB9VLE