Modifications
Ranger RCI 2950 modifications for the old and new model
Old Version
Locate the PCB which has the jumpers on it (it is behind the front panel)
Find jumper J2, you will notice that it is on pins P3 and P4
If you remove it you will have coverage from 26.000-29.700 Mhz
If you place it on pins P1 and P2 you will have coverage from 26.000-32.000 Mhz
Now reset the cpu by pressing the button below J2
To get a channel read out locate J1, the jumper will be on pins P1 and P2, move it to P2 and P3.
Now when you press the lock button you will toggle between CB channels and the VFO readout !
New Version
On this version there is only one jumper which has two positions.
In one position it gives 28.000-30.000 Mhz
In the other it gives 26.000-30.000 Mhz
BUT if you short out all three pins you get 26.000-32.000 Mhz !!
VR14-AMC
L34,L13,L14,L16-AM Power
VR13-AM High power
VR15-AM Low power
VR12-SSB high power ALC
VR16-SSB Low power ALC
The only difference between the old and new versions of the RCI 2950 is the new CPU board. They require slightly different modifications.
The old version of this radio can be expanded from 26 Mhz to 32 Mhz. Although the use of the 30 -32 Mhz range may need realignment.
First find the PC board with the jumpers on (behind the front panel).Then find 'J2',there is a jumper on pins P3 and P4.If this is jumper is removed you will get coverage from 26 Mhz to 29.7 Mhz.
If this jumper is then place on P1 and P2 coverage will be from 26 Mhz to 32 Mhz(re tuning may be needed to operate in 30-32 Mhz range).
The CPU now needs to be reset by pressing the button located below 'J2'
As the CPU board has changed the modification is different. On the CPU board there is only one jumper with two positions available. In one position it covers 28 Mhz to 30 Mhz, In the other it covers 26 Mhz to 30 Mhz. But if you jump all three pins together you'll get 26 Mhz to 30 Mhz.(If this is incorrect PLEASE tell me)
RCI 2950
Supertune: add 330pf caps across C261, 262, and 270, and retune for best output. Simple, Huh!