microHAM © 2008 All rights reserved
APPENDIX A – CONNECTORS
RADIO 1, RADIO 2 - DB37
Pin #
Label
Description
1
N/C
No contact
20
RS232 RTS
RS232 radio port RTS output
2
RS232 CTS
RS232 radio port CTS input
21
IF-FIF
iface matrix - used for configuring desired levels for radio control interface
3
IF IN
iface matrix - used for configuring desired levels for radio control interface
22
FIF IN
iface matrix - used for configuring desired levels for radio control interface
4
RS-TTL OUT
iface matrix - used for configuring desired levels for radio control interface
23
FILTER OUT
iface matrix - used for configuring desired levels for radio control interface
5
CI-V IN
iface matrix - used for configuring desired levels for radio control interface
24
RS232 IN
iface matrix - used for configuring desired levels for radio control interface
6
CI-V OUT
CI-V bus output "open collector"
25
RS232 OUT
RS232 TXD output
7
FIF OUT
FIF-232 TXD output "TTL"
26
IF OUT
IF-232 TXD output "TTL"
8
FILTER IN
RXD input for all interfaces
27
PTT1
PTT1 output "open collector" generally used as all mode front panel MIC PTT
9
PTT2
PTT2 output "open collector" generally used as rear panel digital modes PTT
28
CW OUT
CW output "open collector"
10
PULL UP
+5V through a 10K resistor
29
FSK OUT
FSK output "open collector"
11
FSW IN
Hand Mic PTT input, N/A at RADIO2
30
MIC #1
RJ45 Microphone jack pin #1, N/A at RADIO2
12
MIC #2
RJ45 Microphone jack pin #2, N/A at RADIO2
31
MIC #3
RJ45 Microphone jack pin #3, N/A at RADIO2
13
MIC #4
RJ45 Microphone jack pin #4, N/A at RADIO2
32
MIC #5
RJ45 Microphone jack pin #5, N/A at RADIO2
14
MIC #6
RJ45 Microphone jack pin #6, N/A at RADIO2
33
MIC #7
RJ45 Microphone jack pin #7, N/A at RADIO2
15
MIC #8
RJ45 Microphone jack pin #8, N/A at RADIO2
34
MIC GND
Microphone ground, N/A at RADIO2
16
MIC
Microphone signal, N/A at RADIO2
35
RADIO MIC IN GND
Radio MIC ground
17
RADIO MIC IN
Radio MIC signal
36
RADIO AF IN GND
Radio AUDIO input ground
18
RADIO AF IN
Radio AUDIO input signal
37
RADIO AF OUT GND
Radio AUDIO output ground
19
RADIO AF OUT
Radio AUDIO output signal
SHELL
GND
Radio and power GND
75