EF Johnson Challenger Series Information

EF Johnson Series Radio Model number Information

The VHF units were 715x and 716x (the 5x were 1st generation and 6x were 2nd generation)

The UHF units were 717x and 718x (the 7x were 1st generation and 8x were 2nd generation)

The following numbers replace the x as mentioned above:

7151 / 7161

VHF

2 Channel

25 watts

7171 / 7181

UHF

2 Channel

15 watts

7152 / 7162

VHF

8 Channel

25 watts

7172 / 7182

UHF

8 Channel

15 watts (UHF)

3

2 Channel 40 watts (VHF) 35 watts (UHF)

4

8 Channel 40 watts (VHF) 35 watts (UHF)

5

20 Channel 40 watts (VHF) 35 watts (UHF)

6

99 Channel 40 watts (VHF) 35 watts (UHF)

7

99 Channel 100 watts (VHF) 80 watts (UHF)

If it had a -5 after the number it was a remote mount system