PRESIDENT HENRY classic ASC 12/24, Service Manual

Page: 13 / 42

ALIGNMENT TRANSMITTER
1 - Alignment procedure (13,2V/26,4V;configuration”EU”)
STEP CONDITION ADJUSTMENT REMARKS OF ADJUSTMENT
1 AM/FM(EU)TX
Channel 20
RT402
Connect a wattmeter to jack antenna,
adjust RT402 to reach 4W on the
wattmeter.
2 Same as 1
Connect a dummy load to jack antenna.
Check that the “RF meter” displays S9
3 FM(EU)TX
Mod
30 mV 1 KHz
CH 20
RT303
Adjust RT303 to reach ± 1,2KHz of
deviation.
7 AM(EU)TX
Mod
30 mV 1 KHz
CH 20
RT401/RT403
First: Adjust RT401 and RT403 to the
maximum of modulation, then adjust
RT403 to reach ±90% of modulation, then
adjust RT401 to reach ± 85% of
modulation.