When a 2-terminal electret condenser microphone is used.
When the other equipment has DC blocking capacitors.
μF capacitor is not required in the following cases:
Voltage is developed across the 100 Ω resistor in the 3.5 V line in the transceiver. When 2 mA flows, approximately 3.3 V is developed.
External microphone
Ø3.5
plug
Ø2.5
plug
Lock
SW
MIC jack
SP jack
PTT switch
SW-1
SW-3
SW-2
27K
10K
3.9K
remotely controlling
CONNECTING EQUIPMENT FOR REMOTE CONTROL

1

2

3Make connections as shown when equipment.

4

5

6

7

8

9

10

11

12

13

 

Note 1

 

 

μF

14

Note 2 10

 

 

 

 

15Note 1:

17

Note 2: A 10

18

∙

19

∙

 

20

 

21

22

23

EQUIPMENT CONNECTIONS

CONNECTING OTHER EXTERNAL EQUIPMENT

When connecting an external speaker, an external microphone, or other equipment such as a TNC for packet radio to the SP jack or MIC jack, refer to the diagram below.

 

SP

Speaker

 

 

External

 

Ground

Ø2.5

 

speaker,

 

 

plug

 

TNC RX, etc.

 

 

 

 

switch

External

3.5 V

100 Ω 3.5 V

Ø3.5

 

speaker

 

 

MIC

plug

 

 

MIC

 

PTT

External

 

 

 

 

PTT

 

 

microphone,

 

PTT

 

 

 

 

 

Note 2 10μF

TNC TX, etc.

 

 

Note 1

 

 

Note 1: Voltage is developed across the 100 Ω resistor in the 3.5 V line in the transceiver. When 2 mA flows, approximately 3.3 V is developed.

Note 2: A 10 μF capacitor is not required in the following cases:

∙When the other equipment has DC blocking capacitors.

∙When a 2-terminal electret condenser microphone is used.

96