Galaxy
DX Radios DX95T2
Documentation Project
CBTricks.com
Transmitter Alignment
See Alignment
Locations
| SETTINGS | CONNECTION |
ADJUST
|
ADJUST FOR |
|
Remove
TP7-TP9 Jumper PCB.
|
|||
| TX
CARRIER OSCILLATORS: AM TX Mode Band E CH. 1 |
Connect Frequency Counter to TP6 |
L25
|
LSB/TX mode: Adjust for 10.6975MHz ±20Hz. |
| Connect Frequency Counter to TP6 |
L24
|
USB/TX mode: Adjust for 10.6925MHz ±20 Hz. | |
| Connect Frequency Counter to TP5 |
L23
|
AM/TX mode: Adjust for 10.6950MHz ±20 Hz. | |
| DRIVER
BIAS: (2SC2166) Set Radio to: Band E, Ch.1 Mode to USB MIKE GAIN at minimum. |
Connect DC Ammeter between TP7 and TP9. |
VR12
|
Key TX adjust
for 75mA. |
| FINAL
BIAS: (2SC2312) Set Radio to: Band E, Ch.1 Mode to USB MIKE GAIN at minimum |
Connect DC Ammeter between TP7 and TP8. |
VR10
|
Key TX & adjust for 50mA. |
|
Replace
TP7-TP9 Jumper PCB.
|
|||
| RF
AMP CHAIN: Set mode to AM. Set RF power control fully clockwise. |
Connect wattmeter to ANT output. |
L44,
L43,
L42, L40, L44 |
Key
TX & adjust (in order) for maximum RF output . Recheck power across
entire freq range. Re-adjust L44 for minimum SSB distortion. |
| SSB CARRIER
BALANCE: Set mode to USB Set RF power control fully clockwise MIKE GAIN to minimum. |
Connect wattmeter
to ANT output. |
VR6
|
Key TX, adjust for min. carrier leakthrough on scope or wattmeter. Recheck on LSB mode. If necessary readjust for best balance of sideband suppression between LSB & USB |
| SSB
APC: Set mode to USB Set RF power fully clockwise. MIKE GAIN to minimum. |
Connect DC voltmeter from pcb ground to TP7 |
VR17
|
In TX, adjust for 8.5vdc |
| SSB ALC:
Mode to USB. MIKE GAIN to maximum. Inject two-tone audio signal of 700Hz and 1900Hz, 30 mV to Mic input. |
Connect wattmeter
to ANT output. |
VR13
L44 |
In TX, adjust
for 100 watts PEP. Adjust for minimum distortion on scope |
| AM
CARRIER POWER: Set mode to AM, MIKE GAIN at minimum. RF Power SW to HI. |
Connect
wattmeter to ANT output. CAUTION! Do not exceed power levels. Damage to power transistors and inability to achieve 100% modulation from insufficient audio power will result. |
VR14 |
Set
RF PWR fully clockwise adjust VR14 for 40 watts |
|
VR18
|
Set
RF PWR fully counter clockwise. Adjust for 10 watts |
||
| RF METER:
Set mode to AM, RF Power fully clockwise MIKE GAIN at minimum. Meter Switch to PWR |
Connect wattmeter to ANT output. |
VR9
|
Adjust so meter agrees with Wattmeter. |
| AMC:
Mode to AM. RF Power fully clockwise MIKE GAIN to maximum. Inject audio signal of 1KHz at 30mV to Mic input. |
Connect modulation meter to ANT output. |
VR16
|
Adjust for 100% modulation depth. |
| MODULATION
METER: Mode to AM. RF Power fully clockwise MIKE GAIN to maximum. Meter Switch to MOD Inject audio signal of 1KHz at 30mV to Mic input. |
Connect modulation meter to ANT output. |
VR15
|
Adjust so meter agrees with modulation meter. |
| Mod
Lamp Adjust: Mode to AM. RF Power fully clockwise MIKE GAIN to maximum. Front Panel Switch to Mod Lamp Inject audio signal of 1KHz at 30mV to Mic input. |
Connect modulation meter to ANT output. |
VR910
|
Adjust
so that lamp illuminates at approx. 75% modulation |
| FM DEVIATION:
Mode to FM MIKE GAIN to maximum. Inject 1 KHz, 30 mV audio signal at mike jack. |
Connect deviation meter to ANT output. |
VR5
|
Adjust for total deviation of 4.5 KHz. |
Disclaimer:
Although the greatest care has been taken while compiling these documents,
we
cannot guarantee that the instructions will work on every radio presented.