Realistic TRC-410 - Frequencies Generated and Mixed to Obtain each Channel

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