GE Mastr II Nomenclature

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You can find the MASTR II combination number on their ID plate which is located on the front of the radio to the left of the RF connector.  On the same ID plate you will also find the transmitter ID which is important when IDing a UHF PA deck.   Some UHF PA decks are called "tripler decks" because they triple the exciter frequency to produce the desired output frequency.

The first digit is "M" which equates to it's mechanical packaging which is standard.

The second digit is system voltage, either a "C" for 12 VDC negative ground or an "X" for 12 VDC positive or negative ground less accessories.

Special thanks to Rob, K7TGU for providing the complete GE nomenclature for the MASTR II mobile radio.

 

25 - 50 MHz MASTR II

3rd  
Power
Output		 4th  
Channel
Spacing		 5th  
Frequency
Capability		 6th  
Number
Frequencies		 7th  
Options		 8th & 9th   
Frequency
Range		 10th
Oscillator
Stability
6
30 watts		 4
20 kHz		 A
1 Freq		 A
1 xmit
1 recv		 S
Standard		 12
25 - 30 MHz		 A
±5 ppm
7
100 watts		 C
2 Freq		 B
2 xmit
1 recv		 U
channel guard		 13
30 - 36 MHz		 B
±2 ppm
K
8 Freq		 C
2 xmit
2 recv		 N
noise blanker		 23
36 - 42 MHz
D
1 xmit
2 recv		 W
channel guard &
noise blanker		 33
42 - 50 MHz
E
3 xmit
3 recv
F
4 xmit
4 recv
G
5 xmit
5 recv
H
6 xmit
6 recv
J
7 xmit
7 recv
K
8 xmit
8 recv

 

66 - 88 MHz MASTR II

3rd  
Power
Output		 4th  
Channel
Spacing		 5th  
Frequency
Capability		 6th  
Number
Frequencies		 7th  
Options		 8th & 9th   
Frequency
Range		 10th
Oscillator
Stability
5
25 watts		 4
20 kHz		 A
1 Freq		 A
1 xmit
1 recv		 S
Standard		 44
66 - 78 MHz		 A
±5 ppm
C
2 Freq		 B
2 xmit
1 recv		 U
channel guard		 45
77 - 88 MHz		 B
±2 ppm
K
8 Freq		 C
2 xmit
2 recv
D
1 xmit
2 recv
E
3 xmit
3 recv
F
4 xmit
4 recv
G
5 xmit
5 recv
H
6 xmit
6 recv
J
7 xmit
7 recv
K
8 xmit
8 recv

 

138 - 174 MHz MASTR II

3rd  
Power
Output		 4th  
Channel
Spacing		 5th  
Frequency
Capability		 6th  
Number
Frequencies		 7th  
Options		 8th & 9th   
Frequency
Range		 10th
Oscillator
Stability
5
35 watts KT-32-A,C
40 watts KT-32-B,K		 6
30 kHz		 A
1 Freq		 A
1 xmit
1 recv		 S
Standard		 56
138 - 150.8 MHz		 A
±5 ppm
6
65 watts		 C
2 Freq		 B
2 xmit
1 recv		 U
channel guard		 66
150.8 - 174 MHz		 B
±2 ppm
7
110 watts		 K
8 Freq		 C
2 xmit
2 recv		 N
noise blanker		 C
±5 ppm
PLL
D
1 xmit
2 recv		 W
channel guard &
noise blanker		 D
±2 ppm
PLL
E
3 xmit
3 recv		 P
UHS receiver
F
4 xmit
4 recv		 G
UHS receiver &
channel guard
G
5 xmit
5 recv
H
6 xmit
6 recv
J
7 xmit
7 recv
K
8 xmit
8 recv

 

406 - 420 & 450 - 512 MHz MASTR II (40 Watts)
450 - 512 MHz MASTR II (20 Watts)
Transmitter ID's: KT-35-A,C - KT-36-A,C
(These are the Tripler type PA decks)

3rd  
Power
Output		 4th  
Channel
Spacing		 5th  
Frequency
Capability		 6th  
Number
Frequencies		 7th  
Options

8th & 9th
Frequency
Range

 10th
Oscillator
Stability
5
20 watts		 5
25 kHz		 A
1 Freq		 A
1 xmit
1 recv		 S
Standard		 77
406 - 420 MHz		 A
±5 ppm
6
40 watts		 C
2 Freq		 B
2 xmit
1 recv		 U
channel guard		 88
450 - 470 MHz		 B
±2 ppm
K
8 Freq		 C
2 xmit
2 recv		 P
UHS receiver		 89
470 - 494 MHz
D
1 xmit
2 recv		 G
UHS receiver &
channel guard		 91
494 - 512 MHz
E
3 xmit
3 recv
F
4 xmit
4 recv
G
5 xmit
5 recv
H
6 xmit
6 recv
J
7 xmit
7 recv
K
8 xmit
8 recv

 

406 - 512 MHz MASTR II
Transmitter ID's: KT-35-B,D - KT-36-B,D - KT-37-A,C - KT-112-A,C

3rd  
Power
Output		 4th  
Channel
Spacing		 5th  
Frequency
Capability		 6th  
Number
Frequencies		 7th  
Options		 8th & 9th
Frequency
Range		 10th
Oscillator
Stability
4
20 watts		 5
25 kHz		 A
1 Freq		 A
1 xmit
1 recv		 S
Standard		 77
406 - 420 MHz		 A
±5 ppm
5
40 watts		 C
2 Freq		 B
2 xmit
1 recv		 U
channel guard		 78
420 - 450 MHz		 B
±2 ppm
6
75 watts		 K
8 Freq		 C
2 xmit
2 recv		 P
UHS receiver		 88
450 - 470 MHz
7
100 watts		 D
1 xmit
2 recv		 G
UHS receiver &
channel guard		 89
470 - 494 MHz
E
3 xmit
3 recv		 91
494 - 512 MHz
F
4 xmit
4 recv
G
5 xmit
5 recv
H
6 xmit
6 recv
J
7 xmit
7 recv
K
8 xmit
8 recv