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President Jackson CB-Radio


Modification for AM, SSB and to get +5 kHz step

1: Unsolder wire from D74 and R150 to small PCB
2: Unsolder wire on rotary switch point "7"
3: Solder wire from rotary switch point "12" to main PCB point "BRN" (Brown wire)
4: Solder two track on small PCB

Modification for 240 channel

Soldering side:
1: Unsolder the white wire from point C
2: Unsolder the grey, brown, red, yellow, blue and white wires (they were all soldered together)
3: Each of them has to be soldered on its plase (exept the white one which is not necessery anymore and the gray that has another plase)

Components side:
Solder the gray wire onto the programming card, inside the small white circle.

To encrease the power

1: Component side: on R227 replace the resistance of 100 ohm by another of 1,5 kohm.
2: Soldering side: get off the 1,5 kohm resistance from the adjustable resistance VR8.


Frequency list

Ch.ABCDEF
0125.61526.06526.51526.96527.41527.865
0225.62526.07526.52526.97527.42527.875
0325.63526.08526.53526.98527.43527.885
0425.65526.10526.55527.00527.45527.905
0525.66526.11526.56527.01527.46527.915
0625.67526.12526.57527.02527.47527.925
0725.68526.13526.58527.03527.48527.935
0825.70526.15526.60527.05527.50527.955
0925.71526.16526.61527.06527.51527.965
1025.72526.17526.62527.07527.52527.975
1125.73526.18526.63527.08527.53527.985
1225.75526.20526.65527.10527.55528.005
1325.76526.21526.66527.11527.56528.015
1425.77526.22526.67527.12527.57528.025
1525.78526.23526.68527.13527.58528.035
1625.80526.25526.70527.15527.60528.055
1725.81526.26526.71527.16527.61528.065
1825.82526.27526.72527.17527.62528.075
1925.83526.28526.73527.18527.63528.085
2025.85526.30526.75527.20527.65528.105
2125.86526.31526.76527.21527.66528.115
2225.87526.32526.77527.22527.67528.125
2325.90526.35526.80527.25527.70528.155
2425.88526.33526.78527.23527.68528.135
2525.89526.34526.79527.24527.69528.145
2625.91526.36526.81527.26527.71528.165
2725.92526.37526.82527.27527.72528.175
2825.93526.38526.83527.28527.73528.185
2925.94526.39526.84527.29527.74528.195
3025.95526.40526.85527.30527.75528.205
3125.96526.41526.86527.31527.76528.215
3225.97526.42526.87527.32527.77528.225
3325.98526.43526.88527.33527.78528.235
3425.99526.44526.89527.34527.79528.245
3526.00526.45526.90527.35527.80528.255
3626.01526.46526.91527.36527.81528.265
3726.02526.47526.92527.37527.82528.275
3826.03526.48526.93527.38527.83528.285
3926.04526.49526.94527.39527.84528.295
4026.05526.50526.95527.40527.85528.305