Serial Data Input/Output - Arcom RC210 Hardware Manual

The RC210 supports a variety of radios for use as a frequency agile remote base.
If the radio you plan to use with the RC210 uses RS-232 levels directly (you can normally connect your radio to a computer
without the need for an external level converter), you use the RS-232 serial connector (J6) on the RC210 and the "computer"
connector on your radio. In order to make this connection, you will need to fabricate a cable with a DB9 male on one end and a
3 pin header connector on the other. It is suggested you use a shielded cable.
DB9 Pin 3 Pin Header Pin J6
2 1 (Txd)
3 3 (Rxd)
5 2 Gnd
If your radio requires TTL level (it requires a level converter to connect to a computer), you can hook it directly to the RC210
without the need for an external converter by using J4, the A/D and I/O connector. Typical radios would be those such as the
Icom IC-706MkIIg.
J4 Pin
20 Serial Data OUT to Radio
25 Ground
Note: If using this connection, you will lose the
use of Alarm Input 5.
If you're using the Doug Hall RBI-1 Remote Base Interface, the connections are:
J4 Pin
19 Clock Data to RBI-1
20 Data to RBI-1
Note: If using the RBI-1, you will lose the use of Alarm Inputs 4 & 5,
as they are used for sending data to the RBI-1.
Using the Kenwood TM-V7 or TM-G707 as your remote base
radio, a separate hardware interface is required.
The hardware interface takes care of automatically switching the radio(s) between programming and operational modes and
takes care of all other connections (such as COS, PTT and audio signals) through the 6 pin DIN packet connector. There is no
need to modify the radio(s) in any way.
The schematic for the V7a/G707 interface may be found at the end of this manual.
Note: If using the V7 Interface, you will lose the use of User Logic Output 7
The RC210 supports the Kenwood single-band mobiles TM-271A (2 meters) and TM-471A (70 cm). Interfacing the necessary
serial connections is easy. You can either purchase Kenwood's PG-5D Programming cable or build your own interface.
Depending on your needs, you may program to use either the serial connection (RS232) on the RC210 or the I/O connector
(see the RC210 Operations and Programming Manual for details on programming this selection).
If you choose to use the serial (RS232) connection, you'll need the interface shown in Figure 1.

Serial Data Input/Output

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