Well if you haven't guessed by now, the mobiles ESN and MIN must
match in the switch or no go. This is required for billing purposes. If one
had the ESN and the mobile phone number (MIN), he could call anytime and
anyplace without fear of a trace - let alone a bill. The ideal setup would
let you listen with a scanner to the reverse control channel, record and
display heard working numbers and ESN's, and recall them as one needs to make
calls.
This would be it, but we are not quite there yet. But some of the
hard work has already been done for us. All the aforementioned codes are
sent in hex, in NRZ code (phase-key shifting), when a cellular subscriber
places a call. But guess what? All phones have an NRZ receiver and
transmitter built right into them. All that has to be done is to have a
receiver on the reverse control channel, recover the other subscibers data
and save it or print it out.
Cellular phones operate on a full duplex channel. One frequency is
used for transmission from the base to the phone, while another is used for
transmission from the phone to the base. The base frequencies are always
exactly 45 MHZ higher than the phone frequency, and both of these are
incremented by 30 KHZ as the progression of channels increases from Channel
#1 to Chanel #1023 (NOTE: There are no channels between 800 and 990).
With some systems (not all) the cellular transmission is received by
the base and retransmitted on the base frequency. When this is done, a
scanner can listen to both sides of the conversation by simply monitoring the
base frequency. When this is not the case, two scanners set 45 MHZ apart
will work.
Here is a list of all Cellular Frequencies:
Non-Wireline Wireline
Channel Tx Freq Rx Freq Channel Tx Freq Rx Freq
Number Mhz Mhz Number Mhz Mhz
1 870.03 825.03 334 880.02 835.02
2 870.06 825.06 335 880.05 835.05
3 870.09 825.09 336 880.08 835.08
4 870.12 825.12 337 880.11 835.11
5 870.15 825.15 338 880.14 835.14
6 870.18 825.18 339 880.17 835.17
7 870.21 825.21 340 880.20 835.20
8 870.24 825.24 341 880.23 835.23
9 870.27 825.27 342 880.26 835.26
10 870.30 825.30 343 880.29 835.29
11 870.33 825.33 344 880.32 835.32
12 870.36 825.36 345 880.35 835.35
13 870.39 825.39 346 880.38 835.38
14 870.42 825.42 347 880.41 835.41
15 870.45 825.45 348 880.44 835.44
16 870.48 825.48 349 880.47 835.47
17 870.51 825.51 350 880.50 835.50
18 870.54 825.54 351 880.53 835.53
19 870.57 825.57 352 880.56 835.56
20 870.60 825.60 353 880.59 835.59
21 870.63 825.63 354 880.62 835.62
22 870.66 825.66 355 880.65 835.65
23 870.69 825.69 356 880.68 835.68
24 870.72 825.72 357 880.71 835.71
25 870.75 825.75 358 880.74 835.74
26 870.78 825.78 359 880.77 835.77
27 870.81 825.81 360 880.80 835.80
28 870.84 825.84 361 880.83 835.83
29 870.87 825.87 362 880.86 835.86
30 870.90 825.90 363 880.89 835.89
31 870.93 825.93 364 880.92 835.92
32 870.96 825.96 365 880.95 835.95
33 870.99 825.99 366 880.98 835.98
34 871.02 826.02 367 881.01 836.01
35 871.05 826.05 368 881.04 836.04
36 871.08 826.08 369 881.07 836.07
37 871.11 826.11 370 881.10 836.10
38 871.14 826.14 371 881.13 836.13
39 871.17 826.17 372 881.16 836.16
40 871.20 826.20 373 881.19 836.19
41 871.23 826.23 374 881.22 836.22
42 871.26 826.26 375 881.25 836.25
43 871.29 826.29 376 881.28 836.28
44 871.32 826.32 377 881.31 836.31
45 871.35 826.35 378 881.34 836.34
46 871.38 826.38 379 881.37 836.37
47 871.41 826.41 380 881.40 836.40
48 871.44 826.44 381 881.43 836.43
49 871.47 826.47 382 881.46 836.46
50 871.50 826.50 383 881.49 836.49
51 871.53 826.53 384 881.52 836.52
52 871.56 826.56 385 881.55 836.55
53 871.59 826.59 386 881.58 836.58
54 871.62 826.62 387 881.61 836.61
55 871.65 826.65 388 881.64 836.64
56 871.68 826.68 389 881.67 836.67
57 871.71 826.71 390 881.70 836.70
58 871.74 826.74 391 881.73 836.73
59 871.77 826.77 392 881.76 836.76
60 871.80 826.80 393 881.79 836.79
61 871.83 826.83 394 881.82 836.82
62 871.86 826.86 395 881.85 836.85
63 871.89 826.89 396 881.88 836.88
64 871.92 826.92 397 881.91 836.91
65 871.95 826.95 398 881.94 836.94
66 871.98 826.98 399 881.97 836.97
67 872.01 827.01 400 882.00 837.00
68 872.04 827.04 401 882.03 837.03
69 872.07 827.07 402 882.06 837.06
70 872.10 827.10 403 882.09 837.09
71 872.13 827.13 404 882.12 837.12
72 872.16 827.16 405 882.15 837.15
73 872.19 827.19 406 882.18 837.18
74 872.22 827.22 407 882.21 837.21
75 872.25 827.25 408 882.24 837.24
76 872.28 827.28 409 882.27 837.27
77 872.31 827.31 410 882.30 837.30
78 872.34 827.34 411 882.33 837.33
79 872.37 827.37 412 882.36 837.36
80 872.40 827.40 413 882.39 837.39
81 872.43 827.43 414 882.42 837.42
82 872.46 827.46 415 882.45 837.45
83 872.49 827.49 416 882.48 837.48
84 872.52 827.52 417 882.51 837.51
85 872.55 827.55 418 882.54 837.54
86 872.58 827.58 419 882.57 837.57
87 872.61 827.61 420 882.60 837.60
88 872.64 827.64 421 882.63 837.63
89 872.67 827.67 422 882.66 837.66
90 872.70 827.70 423 882.69 837.69
91 872.73 827.73 424 882.72 837.72
92 872.76 827.76 425 882.75 837.75
93 872.79 827.79 426 882.78 837.78
94 872.82 827.82 427 882.81 837.81
95 872.85 827.85 428 882.84 837.84
96 872.88 827.88 429 882.87 837.87
97 872.91 827.91 430 882.90 837.90
98 872.94 827.94 431 882.93 837.93
99 872.97 827.97 432 882.96 837.96
100 873.00 828.00 433 882.99 837.99
101 873.03 828.03 434 883.02 838.02
102 873.06 828.06 435 883.05 838.05
103 873.09 828.09 436 883.08 838.08
104 873.12 828.12 437 883.11 838.11
105 873.15 828.15 438 883.14 838.14
106 873.18 828.18 439 883.17 838.17
107 873.21 828.21 440 883.20 838.20
108 873.24 828.24 441 883.23 838.23
109 873.27 828.27 442 883.26 838.26
110 873.30 828.30 443 883.29 838.29
111 873.33 828.33 444 883.32 838.32
112 873.36 828.36 445 883.35 838.35
113 873.39 828.39 446 883.38 838.38
114 873.42 828.42 447 883.41 838.41
115 873.45 828.45 448 883.44 838.44
116 873.48 828.48 449 883.47 838.47
117 873.51 828.51 450 883.50 838.50
118 873.54 828.54 451 883.53 838.53
119 873.57 828.57 452 883.56 838.56
120 873.60 828.60 453 883.59 838.59
121 873.63 828.63 454 883.62 838.62
122 873.66 828.66 455 883.65 838.65
123 873.69 828.69 456 883.68 838.68
124 873.72 828.72 457 883.71 838.71
125 873.75 828.75 458 883.74 838.74
126 873.78 828.78 459 883.77 838.77
127 873.81 828.81 460 883.80 838.80
128 873.84 828.84 461 883.83 838.83
129 873.87 828.87 462 883.86 838.86
130 873.90 828.90 463 883.89 838.89
131 873.93 828.93 464 883.92 838.92
132 873.96 828.96 465 883.95 838.95
133 873.99 828.99 466 883.98 838.98
134 874.02 829.02 467 884.01 839.01
135 874.05 829.05 468 884.04 839.04
136 874.08 829.08 469 884.07 839.07
137 874.11 829.11 470 884.10 839.10
138 874.14 829.14 471 884.13 839.13
139 874.17 829.17 472 884.16 839.16
140 874.20 829.20 473 884.19 839.19
141 874.23 829.23 474 884.22 839.22
142 874.26 829.26 475 884.25 839.25
143 874.29 829.29 476 884.28 839.28
144 874.32 829.32 477 884.31 839.31
145 874.35 829.35 478 884.34 839.34
146 874.38 829.38 479 884.37 839.37
147 874.41 829.41 480 884.40 839.40
148 874.44 829.44 481 884.43 839.43
149 874.47 829.47 482 884.46 839.46
150 874.50 829.50 483 884.49 839.49
151 874.53 829.53 484 884.52 839.52
152 874.56 829.56 485 884.55 839.55
153 874.59 829.59 486 884.58 839.58
154 874.62 829.62 487 884.61 839.61
155 874.65 829.65 488 884.64 839.64
156 874.68 829.68 489 884.67 839.67
157 874.71 829.71 490 884.70 839.70
158 874.74 829.74 491 884.73 839.73
159 874.77 829.77 492 884.76 839.76
160 874.80 829.80 493 884.79 839.79
161 874.83 829.83 494 884.82 839.82
162 874.86 829.86 495 884.85 839.85
163 874.89 829.89 496 884.88 839.88
164 874.92 829.92 497 884.91 839.91
165 874.95 829.95 498 884.94 839.94
166 874.98 829.98 499 884.97 839.97
167 875.01 830.01 500 885.00 840.00
168 875.04 830.04 501 885.03 840.03
169 875.07 830.07 502 885.06 840.06
170 875.10 830.10 503 885.09 840.09
171 875.13 830.13 504 885.12 840.12
172 875.16 830.16 505 885.15 840.15
173 875.19 830.19 506 885.18 840.18
174 875.22 830.22 507 885.21 840.21
175 875.25 830.25 508 885.24 840.24
176 875.28 830.28 509 885.27 840.27
177 875.31 830.31 510 885.30 840.30
178 875.34 830.34 511 885.33 840.33
179 875.37 830.37 512 885.36 840.36
180 875.40 830.40 513 885.39 840.39
181 875.43 830.43 514 885.42 840.42
182 875.46 830.46 515 885.45 840.45
183 875.49 830.49 516 885.48 840.48
184 875.52 830.52 517 885.51 840.51
185 875.55 830.55 518 885.54 840.54
186 875.58 830.58 519 885.57 840.57
187 875.61 830.61 520 885.60 840.60
188 875.64 830.64 521 885.63 840.63
189 875.67 830.67 522 885.66 840.66
190 875.70 830.70 523 885.69 840.69
191 875.73 830.73 524 885.72 840.72
192 875.76 830.76 525 885.75 840.75
193 875.79 830.79 526 885.78 840.78
194 875.82 830.82 527 885.81 840.81
195 875.85 830.85 528 885.84 840.84
196 875.88 830.88 529 885.87 840.87
197 875.91 830.91 530 885.90 840.90
198 875.94 830.94 531 885.93 840.93
199 875.97 830.97 532 885.96 840.96
200 876.00 831.00 533 885.99 840.99
201 876.03 831.03 534 886.02 841.02
202 876.06 831.06 535 886.05 841.05
203 876.09 831.09 536 886.08 841.08
204 876.12 831.12 537 886.11 841.11
205 876.15 831.15 538 886.14 841.14
206 876.18 831.18 539 886.17 841.17
207 876.21 831.21 540 886.20 841.20
208 876.24 831.24 541 886.23 841.23
209 876.27 831.27 542 886.26 841.26
210 876.30 831.30 543 886.29 841.29
211 876.33 831.33 544 886.32 841.32
212 876.36 831.36 545 886.35 841.35
213 876.39 831.39 546 886.38 841.38
214 876.42 831.42 547 886.41 841.41
215 876.45 831.45 548 886.44 841.44
216 876.48 831.48 549 886.47 841.47
217 876.51 831.51 550 886.50 841.50
218 876.54 831.54 551 886.53 841.53
219 876.57 831.57 552 886.56 841.56
220 876.60 831.60 553 886.59 841.59
221 876.63 831.63 554 886.62 841.62
222 876.66 831.66 555 886.65 841.65
223 876.69 831.69 556 886.68 841.68
224 876.72 831.72 557 886.71 841.71
225 876.75 831.75 558 886.74 841.74
226 876.78 831.78 559 886.77 841.77
227 876.81 831.81 560 886.80 841.80
228 876.84 831.84 561 886.83 841.83
229 876.87 831.87 562 886.86 841.86
230 876.90 831.90 563 886.89 841.89
231 876.93 831.93 564 886.92 841.92
232 876.96 831.96 565 886.95 841.95
233 876.99 831.99 566 886.98 841.98
234 877.02 832.02 567 887.01 842.01
235 877.05 832.05 568 887.04 842.04
236 877.08 832.08 569 887.07 842.07
237 877.11 832.11 570 887.10 842.10
238 877.14 832.14 571 887.13 842.13
239 877.17 832.17 572 887.16 842.16
240 877.20 832.20 573 887.19 842.19
241 877.23 832.23 574 887.22 842.22
242 877.26 832.26 575 887.25 842.25
243 877.29 832.29 576 887.28 842.28
244 877.32 832.32 577 887.31 842.31
245 877.35 832.35 578 887.34 842.34
246 877.38 832.38 579 887.37 842.37
247 877.41 832.41 580 887.40 842.40
248 877.44 832.44 581 887.43 842.43
249 877.47 832.47 582 887.46 842.46
250 877.50 832.50 583 887.49 842.49
251 877.53 832.53 584 887.52 842.52
252 877.56 832.56 585 887.55 842.55
253 877.59 832.59 586 887.58 842.58
254 877.62 832.62 587 887.61 842.61
255 877.65 832.65 588 887.64 842.64
256 877.68 832.68 589 887.67 842.67
257 877.71 832.71 590 887.70 842.70
258 877.74 832.74 591 887.73 842.73
259 877.77 832.77 592 887.76 842.76
260 877.80 832.80 593 887.79 842.79
261 877.83 832.83 594 887.82 842.82
262 877.86 832.86 595 887.85 842.85
263 877.89 832.89 596 887.88 842.88
264 877.92 832.92 597 887.91 842.91
265 877.95 832.95 598 887.94 842.94
266 877.98 832.98 599 887.97 842.97
267 878.01 833.01 600 888.00 843.00
268 878.04 833.04 601 888.03 843.03
269 878.07 833.07 602 888.06 843.06
270 878.10 833.10 603 888.09 843.09
271 878.13 833.13 604 888.12 843.12
272 878.16 833.16 605 888.15 843.15
273 878.19 833.19 606 888.18 843.18
274 878.22 833.22 607 888.21 843.21
275 878.25 833.25 608 888.24 843.24
276 878.28 833.28 609 888.27 843.27
277 878.31 833.31 610 888.30 843.30
278 878.34 833.34 611 888.33 843.33
279 878.37 833.37 612 888.36 843.36
280 878.40 833.40 613 888.39 843.39
281 878.43 833.43 614 888.42 843.42
282 878.46 833.46 615 888.45 843.45
283 878.49 833.49 616 888.48 843.48
284 878.52 833.52 617 888.51 843.51
285 878.55 833.55 618 888.54 843.54
286 878.58 833.58 619 888.57 843.57
287 878.61 833.61 620 888.60 843.60
288 878.64 833.64 621 888.63 843.63
289 878.67 833.67 622 888.66 843.66
290 878.70 833.70 623 888.69 843.69
291 878.73 833.73 624 888.72 843.72
292 878.76 833.76 625 888.75 843.75
293 878.79 833.79 626 888.78 843.78
294 878.82 833.82 627 888.81 843.81
295 878.85 833.85 628 888.84 843.84
296 878.88 833.88 629 888.87 843.87
297 878.91 833.91 630 888.90 843.90
298 878.94 833.94 631 888.93 843.93
299 878.97 833.97 632 888.96 843.96
300 879.00 834.00 633 888.99 843.99
301 879.03 834.03 634 889.02 844.02
302 879.06 834.06 635 889.05 844.05
303 879.09 834.09 636 889.08 844.08
304 879.12 834.12 637 889.11 844.11
305 879.15 834.15 638 889.14 844.14
306 879.18 834.18 639 889.17 844.17
307 879.21 834.21 640 889.20 844.20
308 879.24 834.24 641 889.23 844.23
309 879.27 834.27 642 889.26 844.26
310 879.30 834.30 643 889.29 844.29
311 879.33 834.33 644 889.32 844.32
312 879.36 834.36 645 889.35 844.35
313 879.39 834.39 646 889.38 844.38
314 879.42 834.42 647 889.41 844.41
315 879.45 834.45 648 889.44 844.44
316 879.48 834.48 649 889.47 844.47
317 879.51 834.51 650 889.50 844.50
318 879.54 834.54 651 889.53 844.53
319 879.57 834.57 652 889.56 844.56
320 879.60 834.60 653 889.59 844.59
321 879.63 834.63 654 889.62 844.62
322 879.66 834.66 655 889.65 844.65
323 879.69 834.69 656 889.68 844.68
324 879.72 834.72 657 889.71 844.71
325 879.75 834.75 658 889.74 844.74
326 879.78 834.78 659 889.77 844.77
327 879.81 834.81 660 889.80 844.80
328 879.84 834.84 661 889.83 844.83
329 879.87 834.87 662 889.86 844.86
330 879.90 834.90 663 889.89 844.89
331 879.93 834.93 664 889.92 844.92
332 879.96 834.96 665 889.95 844.95
333 879.99 834.99 666 889.98 844.98
667 890.01 845.01 717 891.51 846.51
668 890.04 845.04 718 891.54 846.54
669 890.07 845.07 719 891.57 846.57
670 890.10 845.10 720 891.60 846.60
671 890.13 845.13 721 891.63 846.63
672 890.16 845.16 722 891.66 846.66
673 890.19 845.19 723 891.69 846.69
674 890.22 845.22 724 891.72 846.72
675 890.25 845.25 725 891.75 846.75
676 890.28 845.28 726 891.78 846.78
677 890.31 845.31 727 891.81 846.81
678 890.34 845.34 728 891.84 846.84
679 890.37 845.37 729 891.87 846.87
680 890.40 845.40 730 891.90 846.90
681 890.43 845.43 731 891.93 846.93
682 890.46 845.46 732 891.96 846.96
683 890.49 845.49 733 891.99 846.99
684 890.52 845.52 734 892.02 847.02
685 890.55 845.55 735 892.05 847.05
686 890.58 845.58 736 892.08 847.08
687 890.61 845.61 737 892.11 847.11
688 890.64 845.64 738 892.14 847.14
689 890.67 845.67 739 892.17 847.17
690 890.70 845.70 740 892.20 847.20
691 890.73 845.73 741 892.23 847.23
692 890.76 845.76 742 892.26 847.26
693 890.79 845.79 743 892.29 847.29
694 890.82 845.82 744 892.32 847.32
695 890.85 845.85 745 892.35 847.35
696 890.88 845.88 746 892.38 847.38
697 890.91 845.91 747 892.41 847.41
698 890.94 845.94 748 892.44 847.44
699 890.97 845.97 749 892.47 847.47
700 891.00 846.00 750 892.50 847.50
701 891.03 846.03 751 892.53 847.53
702 891.06 846.06 752 892.56 847.56
703 891.09 846.09 753 892.59 847.59
704 891.12 846.12 754 892.62 847.62
705 891.15 846.15 755 892.65 847.65
706 891.18 846.18 756 892.68 847.68
707 891.21 846.21 757 892.71 847.71
708 891.24 846.24 758 892.74 847.74
709 891.27 846.27 759 892.77 847.77
710 891.30 846.30 760 892.80 847.80
711 891.33 846.33 761 892.83 847.83
712 891.36 846.36 762 892.86 847.86
713 891.39 846.39 763 892.89 847.89
714 891.42 846.42 764 892.92 847.92
715 891.45 846.45 765 892.95 847.95
716 891.48 846.48 766 892.98 847.98
991 869.04 824.04 767 893.01 848.01
992 869.07 824.07 768 893.04 848.04
993 869.10 824.10 769 893.07 848.07
994 869.13 824.13 770 893.10 848.10
995 869.16 824.16 771 893.13 848.13
996 869.19 824.19 772 893.16 848.16
997 869.22 824.22 773 893.19 848.19
998 869.25 824.25 774 893.22 848.22
999 869.28 824.28 775 893.25 848.25
1000 869.31 824.31 776 893.28 848.28
1001 869.34 824.34 777 893.31 848.31
1002 869.37 824.37 778 893.34 848.34
1003 869.40 824.40 779 893.37 848.37
1004 869.43 824.43 780 893.40 848.40
1005 869.46 824.46 781 893.43 848.43
1006 869.49 824.49 782 893.46 848.46
1007 869.52 824.52 783 893.49 848.49
1008 869.55 824.55 784 893.52 848.52
1009 869.58 824.58 785 893.55 848.55
1010 869.61 824.61 786 893.58 848.58
1011 869.64 824.64 787 893.61 848.61
1012 869.67 824.67 788 893.64 848.64
1013 869.70 824.70 789 893.67 848.67
1014 869.73 824.73 790 893.70 848.70
1015 869.76 824.76 791 893.73 848.73
1016 869.79 824.79 792 893.76 848.76
1017 869.82 824.82 793 893.79 848.79
1018 869.85 824.85 794 893.82 848.82
1019 869.88 824.88 795 893.85 848.85
1020 869.91 824.91 796 893.88 848.88
1021 869.94 824.94 797 893.91 848.91
1022 869.97 824.97 798 893.94 848.94
1023 870.00 825.00 799 893.97 848.97
PART X. A FEW COMMON SCANNER MODIFICATIONS
Here a few scanners and what it takes to modify them. If your
scanner is not shown here, don't worry. Ham Radio BBS's are all over the
country. You should be able to find the instructions for modifying your
scanner there.
Restoration of Cellular Frequency Coverage on
Radio Shack PRO-34 Handheld Scanner
1. Remove battery cover and battery, four black screws on rear cover, and volume and squelch knobs.
2. Remove rear cover, lifting back and up to clear controls. Do not remove belt clip or circuit board screws.
3. Unplug the brown volume control connector (grn/yel/blk) and white squelch control connector (wht/blk/red) from the linear circuit board.
4. Unsolder the ground lead from T111 (at corner of linear circuit board above the external power connectors). Unsolder the two power switch leads from the back of the volume control. Unsolder the antenna connector center pin and ground wires from the l
5. Unscrew the four combination screws that hold the linear circuit board and received the back cover screws.
Grasp the linear board at the top and lift it straight away from the front case, unplugging the 16-pin connector.
6. Remove the three screws holding the metal frame assembly which held the linear board to the front panel. Unplug the red-black power lead and lay the frame aside. It is still connected to the battery contacts.
7. Locate diodes D9 - D12 on the volume control side of the of the logic circuit board under T1; D10 and D11 are marked. Clip one lead of D11, separating the gap. This may be resoldered later if desired.
8. Reassemble the board by reversing the disassembly procedures above.
Restoration of Cellular Frequency Coverage on
Radio Shack PRO-2004 Scanner
By cutting diode D513 on the PC 3 sub chassis in the Realistic PRO-2004
Scanner you can re-enable the 825.00 to 845.00 and 870-00 to 890.00 frequency
selection. To scan in 30KHZ steps press "STEP-RESET".
Restoration of Cellular Frequency Coverage on
Radio Shack PRO-2005 Scanner
1. Unplug the radio
2. Remove the screws and take off the top cover.
3. Look for D502 on the inside right hand-side of the front panel.
(No need to unsolder the silver plate protecting the vertical board!)
4. Simply cut the diode and reverse the process.
Aren't you glad I only chose to cover Radio Shack models. I'm sure
you appreciate the fact that I only deal with quality merchandise. If you
have some cash to blow (like $500), I would recommend buying the ICOM R-1
handheld scanner. It scans from 1 to 1400 in 1/2 step increments and already
includes the cellular frequencies. Plus is is about as tall as a box of 3.25
floppies and about as wide as a 16 oz. coke bottle. It is the smallest and