February 13, 1998

vhf ge mastr II
exciter tuneup

Step	Look for:	Meter postiton	Procedure
1	(max)	A (MOD-1)	Tune T101 for max reading on lowest freq.
2	(max)	B (MOD-2)	Tune T102 & then T103 for max reading on lowest freq.
3	(min)	C (MULT-1)	Tune T104 for a dip in meter reading.
4	...	D (MULT-2)	Tune T105 for max meter reading, & re-adjust T104 for max meter reading. Then tune T106 for a dip in meter reading.
5	...	F (MULT-3)	Tune T107 for max meter reading, & re-adjust T106 for max meter reading. Then tune T108 for a dip in meter reading & T109 for a max meter reading.
6	(max)	G (AMPL-1)	Tune T110 for max meter reading, and then re-adjust T108 & T109 for max meter reading.
7	(max)	D(AMP-1 DRIVE)	Move the black metering plug to power amp and tune T111 and then T112 for max meter reading.
8	(max)	G (AMP-1)	Move black metering plug back to the exciter and re-adjust T108, T109, & T110 for max meter reading.
9	(max)	D(AMP-1 DRIVE)	Move black metering plug to power amp.(on P.A.) re-adjust T111 and T112 for max meter reading.
10	You're done with exciter --- now adjust power setting on P.A. to desired output.

NOTE: For large freq swing or badly mis-aligned TX, preset the slugs in T104 & T105 to the bottom of the coil forms. Preset all others to the top of the coil form.

ge m-II meter plug diagram

Plug top view:

5	Notch
6	1
7	2
8	3
9	4

Plug pinouts
Pin	GE Test Set	J103 (exciter)	J601 (Rcvr)	J210 (PA)	J905 (Sys Bd)
1	Pos. B	MOD-2	IF AMP	...	Spkr Hi
2	Pos. A	MOD-1	FM DET	...	Spkr Lo
3	Pos. C	MULT-1	MULT-1	...	Reg 10V
4	Pos. D	MULT-2	MULT-2	...	A +
5	Pos. G	AMPL-1	GND	-PA Current	PTT
6	...	A +	GND	+PA Current	A -
7	Pos. F	MULT-3	J605	...	Mic Hi
8	...	A -	GND	GND	Mic Lo
9	...	A -	GND	...	A -

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