VERTEX STANDARD CO., LTD.
SPEAKER MICROPHONE
MH-50 Series
Service Manual
©2011 VERTEX STANDARD CO., LTD. EAA75X905
4-8-8 Nakameguro, Meguro-Ku, Tokyo 153-8644, Japan
VERTEX STANDARD
US Headquarters
10900 Walker Street, Cypress, CA 90630, U.S.A.
YAESU UK LTD.
Unit 12, Sun Valley Business Park, Winnall Close
Winchester, Hampshire, SO23 0LB, U.K.
VERTEX STANDARD HK LTD.
Unit 1306-1308, 13F., Millennium City 2, 378 Kwun Tang Road,
Kwun Tong, Kowloon, Hong Kong
VERTEX STANDARD (AUSTRALIA) PTY., LTD.
Tally Ho Business Park, 10 Wesley Court, East Burwood, VIC, 3151
The MH-50 is a Speaker Microphone designed especially for Vertex Standard transceivers*.
:
Check with the latest Vertex Product Catalog for a list of the transceivers that can be used with each version.
*
Q7000315 (MH-50
PUSH SWITCH ASSY
A7A, B7A
(W/ LOCK)
)
Q7000314 (MH-50
TOGGLE SWITCH ASSY
A7A, B7A
(MH-50
C7A, D7A
: Option)
)
M3290029 (MH-50
M3290033 (MH-50
RA0183500 (MH-50
RA0284500 (MH-50
RA018360A (MH-50
RA0182400 (MH-50
RUBBER KNOB (MONI)
MIC ELEMENT
A7A, B7A
C7A, D7A
PTT KNOB
A7A, B7A, D7A
C7A
A7A, C7A, D7A
)
)
)
RA0182500
CAP (EAR)
B7A
)
MH-50
A7A, B7A, C7A
Connector Pinout Diagram
)
)
A7A, C7A
)
B7A
)
A7A
)
B7A, C7A
)
Pin 5 (Select)
Pin 4 (MIC)
Pin 3 (GND)
RA0263100 (MH-50
SPECIAL SCREW
A7A, B7A, C7A
: x2 pcs)
M4090137
SPEAKER
CS1681001
REAR CASE ASSY (w/Belt Clip)
Pin 8 (3.5V:MH-50
(5.0V:MH-50
Pin 6 (ACC:MH-50
(PTT:MH-50
Pin 2 (Speaker --)
Pin 1 (Speaker +)
CS1667001 (MH-50
CURL CORD ASSY (W/O SPECIAL SCREW)
S8002229
SPECIAL SCREW
T9207208 (MH-50
CW ASSY (W/ SPECIAL SCREW)
D7A
)
S8002230
SPECIAL SCREW
A7A, B7A, C7A
)
Non-designated parts are available only as part of a designated assembly.
Specifications
Microphone Impedance: 2.2k-ohm at 1 kHz
Speaker Impedance: 16-ohm
Speaker Input: max. 0.6W
Weight (approx.): 220 g
MH-50
D7A
Connector Pinout Diagram
Pin 8 (5.0V)
Pin 6 (PTT)
Pin 5 (Select)
Pin 4 (MIC)
Pin 3 (GND)
Pin 2 (Speaker --)
Pin 1 (Speaker +)
Circuit Diagram
MH-50A7A
MH-50B7A
MH-50C7A/D7A
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