Frequencies Generated And Mixed To Obtain Each Channel - Realistic TRC-410 Service Manual

Figure 10
8 ohm Dummy Load
Figure 11
8 ohm Dummy Load
RF SIG. GEN.
(27.175MHz)
SET
V.T.V.M.
Distortion Meter
Antenna EXT.
Jack
SP.
Jack
1
RF SIG.GEN
(455 kHz)
Base of Q4
4. FREQUENCIES GENERATED AND MIXED TO
OBTAIN EACH CHANNEL
RECEIVE
*VCO FREQUENCY = ((N/2048) x (REFERENCE FREQUENCY (10.240 MHz))
TRANSMIT
*VCO FREQUENCY = ((N/2048) x (REFERENCE FREQUENCY (10.240 MHz))
*TRANSMIT FREQUENCY = VCO FREQUENCY + (REFERENCE FREQUENCY (10.240 MHz))
CHANNEL
NUMBERS
BCD INPUT TO
IC-1
RECEIVE TRANSMIT
IC-1
PIN NUMBERS
8765 4 3 2 1
N
VCO
FREQUENCY
(MHz)
N
VCO
FREQUENCY
(MHz)
TRANSMIT
FREQUENCY
(MHz)
1 0 0 0 0 0 0 0 1 3254 16.270 3345 16.725 26.965
2 0 0 0 0 0 0 1 0
3256 16.280 3347 16.735 26.975
3 0 0 0 0 0 0 1 1 3258
16.290 3347
16.745 26.985
4 0 0 0 0 0 1 0 0 3262
16.310 3353
16.765 27.005
5 0 0 0 0 0 1 0 1 3264 16.320 3355 16.775 27.015
6 0 0 0 0 0 1 1 0
3265 16.330 3357 16.785 27.025
7 0 0 0 0 0 1 1 1 3268
16.340 3359
16.795 27.035
8
0 0 0 0
1 0 0 0
3272 16.360 3363 16.815 27.055
9 0 0 0 0 1 0 0 1 3274
16.370 3365
16.825 27.065
10 0 0 0 1 0 0 0 0
3276 16.380 3367 16.835 27.075
11 0 0 0 1 0 0 0 1
3278 16.390 3369
16.845 27.085
12
0 0 0 1 0 0 1 0 3282 16.410 3373 16.865 27.015
13
0 0 0 1 0 0 1 1 3284 16.420 3375 16.875 27.115
14 0 0 0 1 0 1 0 0
3286 16.430 3377
16.885 27.125
15 0 0 0 1 0 1 0 1
3288 16.440 3379 16.895 27.135
16 0 0 0 1 0 1 1 0
3292 16.460 3383
16.915 27.155
17 0 0 0 1 0 1 1 1
3294 16.470 3385 16.925 27.165
18 0 0 0 1 1 0 0 0
3296 16.480 3387 16.935
27.175
19 0 0 0 1 1 0 0 1
3293
16.490
3389
16.945 27.185
20 0 0 1 0 0 0 0 0
3302 16.510 3393 16.965 27.205
21
0 0 1 0 0 0 0 1 3304
16.520
3355 16.975 27.215
22 0 0 1 0 0 0 1 0 3306 16.530
3397 16.985
27.225
23
0 0 1 0 0 0 1 1 3312
16.560 3403
17.015 27.255
24 0 0 1 0 0 1 0 0 3308 16.540
3399 16.995
27.235
25
0 0 1 0 0 1 0 1 3310
16.550
3401 17.005
27.245
26
0 0 1 0 0 1 1 0 3314 16.570
3405
17.025 27.265
27 0 0 1 0 0 1 1 1 3316 16.580
3407 17.035 27.275
28 0 0 1 0 1 0 0 0 3318 16.590 3409 17.045
27.285
29 0 0 1 0 1 0 0 1 3320 16.600
3411 17.055 27.295
30 0 0 1 1 0 0 0 0 3322 16.610
3413 17.065
27.305
31
0 0 1 1 0 0 0 1 3324
16.620
3415 17.075 27.315
32 0 0 1 1 0 0 1 0 3326 16.630
3417 17.085
27.325
33
0 0 1 1 0 0 1 1 3328 16.640
3419 17.095
27.335
34 0 0 1 1 0 1 0 0 3330 16.650
3421 17.105
27.345
35
0 0 1 1 0 1 0 1 3332
16.660
3423 17.115
27.355
36
0 0 1 1 0 1 1 0 3334 16.670
3425 17.125
27.365
37 0 0 1 1 0 1 1 1 3336 16.680
3427 17.135 '
27.375
38
0 0 1 1 1 0 0 0 3338 16.690
3429
17.145 27.385
39 0 0 1 1 1 0 0 1 3340 16.700
3431 17.155
27.395
40 0000 0000 3342 16.710
3433 17.165 27.405