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RS-232 Control of the Kenwood
R-5000
Interface Unit: IF-232C
(converts 5V TTL to RS-232 polar) Note: an interface kit
may also be required for some Kenwood models (eg Kenwood IF-10A for TS-711/811,
IF-10B for TS-940S and IF-10C for TS-140/680, IC-10 for TS-440s/R-5000- Check
the requirements for your model before attempting to use
RS-232)
Standard Connections Used:
TXD, RXD, CTS, RTS, GND
Flow Control: Hardware
(RTS/CTS)
Type of RS-232 Command Set:
ASCII text, , 2-character command, variable length data , semi-colon
terminator
Data Parameters: 4800 bps
(fixed), 1 start, 8 data + 2 stop bits (higher data rates are supported with
latest models)
R-5000
Interface
The R-5000 is the only SWL
receiver currently available from Kenwood and is essentially the RX section
from a TS-440S transceiver. The RS-232 command set is as
follows:
| Function |
Command
Prefix |
Format |
| Auto Information |
AI |
As per AI table (above) |
| Antenna Number |
AN |
AN1; - select antenna 1 AN2; -
select antenna 2 |
| Clock |
CK |
| byte
3 |
bytes
4-9 |
1=clock1 2=clock2 |
hhmmss |
|
| Down/Up |
DN/UP |
DN; - decrement freq UP; -
increment freq |
| VFO A/VFO B |
FA/FB |
The frequency is written to either VFO
A or VFO B Frequency value is represented in Hz using 11 digits
Example:
FA00007200000; tunes VFO A to 7.2MHz
|
| Function |
FN |
0=VFO A, 1=VFO B, 2=memory |
| ID |
ID |
Three columns specifying the model
ID R-5000 = 005 |
| Information |
IF |
As per AI table (above) |
| Lock |
LK |
0=off, 1=on |
| Memory Channel |
MC |
In two columns
Example: 02 is channel 2 |
| Mode |
MD |
| 1 |
=LSB |
3 |
=CW |
5 |
=AM |
| 2 |
=USB |
4 |
=FM |
6 |
=FSK |
Example: MD1; selects LSB mode |
|
| Memory Read |
MR |
The format of the response is as
follows:
| Parameter |
Bytes |
Format |
| Command Response |
1-2 |
MR |
| Split Specification |
3 |
- |
| Memory Bank |
4 |
- |
| Memory Channel |
5-6 |
Represented in 2 columns
Example: 02 is channel 2 |
| Frequency |
7-17 |
Frequency in Hz, in 11
columns |
| Mode |
18 |
| 1 |
=LSB |
3 |
=CW |
5 |
=AM |
7 |
=CWN |
| 2 |
=USB |
4 |
=FM |
6 |
=FSK |
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Note: modes
supported by some models may vary
Example: MD1; selects LSB mode |
| Memory Lockout |
19 |
0=note locked out, 1=locked
out |
| - |
21-22 |
|
| - |
23 |
|
| terminator |
24 |
; |
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| Memory Write |
MW |
See MR command for format |
| Power |
PS |
0=off, 1=on |
| Scan |
SC |
0=off, 1=on |
| Step |
ST |
0=off, 1=on |
| Voice Recall |
VR |
no parameters required |
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