Ranger RCI-2950
Documentation Project

CBTricks.com

TX Alignment
TX Alignment Locations

SETTINGS CONNECTION
ADJUST
ADJUST FOR
Remove TP1, TP2, TP3 Jumper PCB.
DRIVER BIAS:
Set mode to LSB
Mic Gain to minimum
Connect DC Ammeter between TP3 and TP2.
VR11
In TX adjust for 50 to 60mA.
FINAL BIAS:
Set mode to LSB
Mic Gain to minimum
Connect DC Ammeter between TP3 and TP1.
N/A
In TX check for 100-120mA.

DO NOT ADJUST VC3 AS THIS IS PART OF 54 MHz TRAP

 Replace TP1, TP2, TP3 Jumper PCB.
Mode LSB
Frequency to 28.000MHz
Adjust VR14
fully counterclockwise.
Adjust VR12
fully counterclockwise.
Set generator for 30mV RMS, 1KHz sinewave.
Connect an audio generator to (pin 2) and ground (pin 1) of Mic connector.
Connect a wattmeter and 50ohm dummy load to the antenna connector. Set wattmeter for 30 Watt scale.
Mic Gain
  
Key the transmitter and slowly increase Mic Gain until you obtain about 10 Watts.
L19, L48
L47, L46,
L43
Adjust for maximum reading on wattmeter. Reduce RF gain if necessary to maintain about 10 to 15 Watts on wattmeter.
Increase Mic gain to maximum
(fully clockwise).
Same as above.
L34
Adjust for maximum output power
SSB CARRIER BALANCE:
Set mode to USB
MIKE GAIN to minimum.
Same as above.
VR7
Key TX; adjust for minimum carrier on scope or wattmeter. If necessary readjust for best balance of sideband suppression between LSB & USB
SSB HIGH PWR:
With Mic gain still a maximum on LSB
Set RF PWR control on radio to minimum.
Same as above.
VR12
Key the transmitter and adjust for 25 Watts.
SSB LOW PWR:
With Mic gain still a maximum on LSB
Set RF PWR control on radio to minimum.
Same as above.
VR16
 Key the transmitter and adjust for 10 Watts.
AM POWER HIGH:
Set RF PWR control on radio to maximum
Put mode selector on AM.
Mic Gain to minimum
Connect a wattmeter and 50ohm dummy load to the antenna connector. Set wattmeter for 30W scale.
VR13
Key transmitter with no modulation applied and adjust for 10 Watts.
AM POWER LOW:
Set RF PWR control on radio to minimum.
Mic Gain to minimum
Connect a wattmeter and 50ohm dummy load to the antenna connector. Set wattmeter for 30W scale.
VR15
 Key transmitter with no modulation applied and adjust for 2W.
RF METER:
Set RF PWR control on radio to maximum.
Mic Gain to minimum.
Connect a wattmeter and 50ohm dummy load to the antenna connector. Set wattmeter for 30W scale.
VR8
Adjust so panel meter agrees with Wattmeter. 
AMC:
Mode to AM
Set generator for 30mV RMS, 1KHz sinewave.
With Mic gain at maximum
Same as above.
VR14
Adjust for 100% modulation. Use modulation meter or oscilloscope with RF sampler. 
FM DEVIATION:
Put mode selector on FM
Key transmitter and check for 4kHz deviation ± 0.5 kHz. Use deviation meter or service monitor.
N/A
Simply check for sufficient transmit audio.
There is no deviation adjustment provided in this radio.

Copyright © 1998, 1999, 2000,2002 CBTricks.com
Updated by Rick Jackson (Euro Radio Co).

Disclaimer: Although the greatest care has been taken while compiling these documents,

we cannot guarantee that the instructions will work on every radio presented.