The World of Free Packet Radio Software Amsterdam The Netherlands
THE WORLD OF FREE PACKET RADIO SOFTWARE AMSTERDAM THE NETHERLANDS
THE NL3ASD MODIFICATIONS PAGES - MODIFICATIONS FOR THE RANGER 2950
MODIFICATIONS FOR THE FOR THE RANGER 2950
RANGER 2950 FREQUENCY MODIFICATION
Remove the case. I think you can remove either the top cover or the bottom cover to get to the PC board with the jumpers.
It will be a small PC board immediately behind the front panel.
Locate J2 there will be a jumper on pins P3 and P4.
Remove this jumper to expand coverage to 26 MHz - 29.7 MHz Move the jumper from P3-P4 to P1-P2 to expand coverage to 26 MHz - 32
MHz.
After moving or removing the jumper, press the CPU reset button located below J2.
Note:Operation between 30 - 32 MHz may require retuning the VCO.
RANGER 2950 CB CHANNEL READOUT MODIFICATION
Locate J1.
There will be a jumper on pins P1-P2.
Remove jumper and place them on P2-P3.
Press the LOCK button on the front panel.
The readout will now display the CB channel number 1 - 40 also will display A channels.
Press LOCK again to return to VFO mode.
Note:The SHF button will not operate while in CB mode.
This modification will disable the frequency lock function.
RANGER 2950 CB CHANNEL 9 SELECT MODIFICATION
Locate J3.
There is a jumper between P1-P2.
Remove the jumper and place it on P2-P3.
Press the roger beep button to go directly to CB Channel 9.
Note:Doing this modification makes it impossible to turn off the roger beep feature unless, possibly you make sure the roger beep is turned off before moving the jumper.
I'm not sure.
RANGER 2950 TUNE-UP MODIFICATION
Adjust VR14 AMC for maximum forward modification.
Mod limiter Q32 can be removed for more modulation but it also disables VR12 SSB ALC and disables variable power for SSB.
I do not recommend removing Q32 you'll have plenty of modulation as is.
Tune L34, L13, L14, L46 and L10 in AM mode for maximum forward swing, using a peak-reading wattmeter.
Try to balance for even power from top to bottom of frequency range.
Note:You'll have a LOT of trouble identifying these cans.
Sorry, I don't know for sure where they are either.
Adjust VR13 AM High Power for 12 Watts dead key with the front panel RF power control at maximum.
Adjust VR15 AM Low Power for 2 watts dead key with front panel RF power control at minimum.
From the 12 Watt dead key you should see a forward swing of 30 to 40 Watts.
From the 2 Watt dead key you should see a forward swing of 18 to 20 Watt.
Adjust VR12 SSB High Power ALC for maximum PEP on SSB, then back off just a little, with front panel RF power control at maximum.
Adjust VR16 SSB Low Power ALC for 5 to 6 Watts PEP on SSB with front panel RF power control at minimum.
You should see 40-50 watts PEP on SSB with front panel RF power control at maximum.
RANGER 2950 MICROPHONE WIRING DIAGRAM
Pin 1 - Shield Pin 2 - Audio Pin 3 - Transmit Pin 4 - Receive Pin 5 - Frequency Select Up Pin 6 - Frequency Select Down
DISCLAIMER
The preceding message is posted for information only.
I do not condone the modification of amateur transceivers for use outside the amateur band.
It is possible that performing the tune-up modifications will shorten the life of the radio's components due to driving them too close to their design tolerances.
I accept no responsibility for possible damage to any radio that is modified in this way.
I cannot personally vouch for any of these modifications they were given to me by a technically inclined friend.
Gecho beta I hope those help I assume no liability for the above modifications I got them off some BBS somewhere and just merely passing them along.
I'm pretty sure they work no CB bootlegging there good buddy.
SOURCE:HENK NL2HAC AT NL3ASD AMSTERDAM THE NETHERLANDS
