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Ken's Electronics, (Wholesale & Retail Electronic Parts) Kalamazoo, Michigan

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Specific Repair Notes on 900+ Models of 1 & 2 Line Answering Machines, Cordless & Wired Telephones

The BLUE BOOK OF PHONE REPAIR was named after "Blue Boxes" or similar devices for beating long distance and pay-phone charges! (No, "phone-freaking" circuits don't work since the phone company switching equipment has become much more sophisticated). Includes Conversion information for Antiques, Dishwater Damage, Dropped/Thrown Handsets, Lighting, Ni-Cad Battery Testing, where to get Schematics & Parts. 4th edition has info on nearly 1000 models. Click here to Order

Frequencies to monitor when you are repairing pre-1984 cordless phones include: 1.690Mhz/49.830Mhz, 1.710Mhz/49.845Mhz, 1.730Mhz/49.860Mhz, 1.750Mhz/49.875Mhz, 1.770Mhz/49.890Mhz. These can often be heard over a mile away! The BLUE BOOK includes 10-channel frequency charts for 1984-1995 models & the additional 15 channels used for 1995-current phones.

Contents (partial)
1 Answering Machine Maintenance & testing
2 Answering Machine Belt Cross Reference
5 Cordless Phone Test & Evaluation
7 Phone Cord Tester (build)
8 Deviation Test Monitor (build accessory for oscilloscope)
9 Phoneline Voltmeter (build)
10 Ring Faker (build)
11 Talk Circuit (build)
12 Zener Tester (build)
12 Automatic Number Identification
12 AT&T
24 Automatic Electric 26 Battery Polarity, Charging & Testing
26 Beauty Line
26 Bell South
29 Beltronics
29 Boosting Range of cordless phones
30 Call-Back/Forwarding/Rollover/Screening/Waiting
30 Caller ID
30 Casio Phonemate
31 CIDCO
31 C-L-A-S-S
32 Cobra
37 Code-A-Phone
38 Colonial Data
39 Conair
40 Category 5
41 DAK
41 Frequencies for cordless phones
42 General Electric
50 Goldstar
50 GTE
51 Handset Compability
51 Handset Intercom (build)
51 Interference from radio transmitters
51 ITT
53 Kin Yeh Industry
54 Kraco
53 Lake
53 Lightning Protection
54 Midland
54 Noisy operation
55 Northern Telecom
55 NW Bell
57 Pactel
57 Panasonic
63 Phone Line Voltage & Loop Current
64 Phone-Mate
68 Radio Shack
70 Record-A-Call
70 RF Interference
70 RJ11, RJ14, RJ25, RJ45
71 Sanyo
72 Sharp
73 Sony
77 Stromberg Carlson
77 SW Bell
82 Toshiba
83 Uniden
87 Western Electric


Copyright © 1997 Fernando R. de Lezica, revised January 2006, All rights reserved.