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Ok I checked these with the RF probe
Pre-driver collector voltage with RF probe
0v RX
1.921v in TX when it is at 2w (initial key up) and 1.071v after it stabilized at 4w

Driver collector voltage with the RF probe.
0v RX
9.7v in TX when it is at 2w (initial key up) and 5.56v after it stabilized at 4w

Final collector voltage with RF probe
0v RX
45.240v in TX when it is at 2w (initial key up) and 19.8v after it stabilized at 4W

Bias regulator (TR37) collector with RF probe
0v RX
172mV in TX when it is at 2w (initial key up) and .233v after it stabilized at 4w

Base voltage of bias regulator (TR37)
0v RX
.337v in TX when it is at 2w (initial key up) and .795v after it stabilized at 4w

I'm going to look at the mode switch next.........

[QUOTE="Unit 75, post: 681698, member: 42248"] Ok I checked these with the RF probe Pre-driver collector voltage with RF probe 0v RX 1.921v in TX when it is at 2w (initial key up) and 1.071v after it stabilized at 4w Driver collector voltage with the RF probe. 0v RX 9.7v in TX when it is at 2w (initial key up) and 5.56v after it stabilized at 4w Final collector voltage with RF probe 0v RX 45.240v in TX when it is at 2w (initial key up) and 19.8v after it stabilized at 4W Bias regulator (TR37) collector with RF probe 0v RX 172mV in TX when it is at 2w (initial key up) and .233v after it stabilized at 4w Base voltage of bias regulator (TR37) 0v RX .337v in TX when it is at 2w (initial key up) and .795v after it stabilized at 4w I'm going to look at the mode switch next......... [/QUOTE]

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