GBPPR 'Zine is the official technical journal of Green Bay Professional Packet Radio (GBPPR). 
Consider it a throw-back to the awesome hack/phreak 'zines like Phrack, TAP, X.25, ~el8, B4B0, BoW, PHANTASY, the LoD/H Technical Journals, Informatik, Frequency, PoC||GTFO etc., with a few surprises thrown in to keep it interesting...
In high school, between 1990 and 1994, I used to write a little hack/phreak 'zine called The Black Book (later changed to Cyber 'Zine, I'm not good with names...). It mostly consisted of print-outs of information and files gathered from various BBSes and covered the local scene in Green Bay, Wisconsin, where not much happens, but has a surprising number of dedicated, hardcore hackers/phreaks - just check the news every once and awhile. Anyway, the 'zine started out kinda lame with just me making and distributing it, then I started using the school's computers to save money on printer cartridges and paper and also started to get more people interested in helping. There where a total of 14 issues (if I remember right) and a "staff" of about five people helping write articles and distribute.
Unfortunately, I don't have a lot of money, but I do have a lot of ideas!
GBPPR 'Zine is the latest самиздат incarnation and consists of information and ideas which I consider interesting to the hacker/maker/mad scientist community. It is basically an attempt to re-energize the underground computer hacker community, while countering the lies and propaganda in $2600.
Note that I have very little interest in most "modern" technologies, as older hardware/software tends to be less expensive, easier to hack, and easier to understand...
The 'zine isn't very good, but I put WAY too much time and effort into yet, so enjoy.
(Note: Many of Bell System Practices and other telco-related documents have been re-scanned/OCRed and moved to a new webpage or go here instead. Also, many of the larger projects have been moved to their own webpages, as it's just easier to maintain, update, etc. Raw HTML files.)
Telephony and Topics XXXXXXXXXXX SNET AT&T Bellcore
Relating to that are XXXX XXXX Lucent Siemens-Rolm
Covered in this area XXX XXX Ameritech PACBELL
XX XXX XX MARS Nortel NYNEX
XX XXXXXXX XX Bell Atlantic US West
IIRG Phantasy Carding XX XX XX XX Motorola Pacific Telesis
Cybertek Phreaking XX XX XX XX Southwestern Bell
SIGINT Ham Radio XX XX \ XX XX Bell South Telecom
Scanner Modifications XX XX / XX XX Lucent Siemens-Rolm
Cellular PC Scans XX XXXXXXXXXXXXXXX XX SNET AT&T Bellcore
Boxing 2600 Buy Sell XX XXX XX Ameritech PACBELL
Trade Pagers Phrack XXX XXX MARS Nortel NYNEX
Satellite VMS PLA SOB XXXX XXXX Bell Atlantic US West
RDT/Renegade Legion XXXXXXXXXXX Motorola Pacific Telesis
|
GBPPR 'Zine - Issue #1 (2.5 MB PDF)
- Local Loop Facility Tour
- Descrambling Analog Cable TV Channels
- Northeast Wisconsin Test Numbers
- Setting Off NOAA Weather Alert Receivers
- Analog Cellular Receive Adapter
- Ameritech Maintenance & Record Keeping Systems
- Bonus: Litespan 2000 Stickers
- April 2004
- md5sum: 2c0cd16e6896ab2bc01093a7b99b4f7e
- Internet Archive Entry
GBPPR 'Zine - Issue #2 (4.0 MB PDF)
GBPPR 'Zine - Issue #3 (8.9 MB PDF)
- Bell System 1013B Handset
- Basic 911 Service / #1A ESS
- Testing Meridian Business Sets Using Predictor
- Mossad-style Assassination Cellular Phone
- Ameritech Planning & Engineering Systems
- Bonus: Big Bell System Logo
- June 2004
- md5sum: 81d929707b2e93496436e86341be5585
- Internet Archive Entry
GBPPR 'Zine - Issue #4 (4.5 MB PDF)
GBPPR 'Zine - Issue #5 (4.8 MB PDF)
- Coin Telephone Introduction
- 1C / 2C-type Coin Telephone Set
- 1A / 2A / 1C / 2C-type Coin Telephone Set - Functional Diagrams
- Bell System 177A Test Set
- Homebrew "Digital" Cable TV Filter
- The Ramsey DA25 for SIGINT Applications
- Bonus: #5 ESS Switch Returned Circuit Pack Tag
- August 2004
- md5sum: 291b00aecb8b4b8d896cb248f21f8ab4
- Internet Archive Entry
GBPPR 'Zine - Issue #6 (6.0 MB PDF)
GBPPR 'Zine - Issue #7 (5.7 MB PDF)
GBPPR 'Zine - Issue #8 (3.1 MB PDF)
GBPPR 'Zine - Issue #9 (5.1 MB PDF)
GBPPR 'Zine - Issue #10 (4.4 MB PDF)
- An Introduction to Fiber Optic Communications
- Basic Digital Communication Theory
- Interface with Switching Control Center System / #1 ESS
- Introduction to the Nortel FMT-150 System
- Remote Control for a PRO-2042 Scanner
- Bonus: Good Source for Plant Test Numbers
- January 2005
- md5sum: b85201fc1d27b6424c755db1428160ac
- Internet Archive Entry
GBPPR 'Zine - Issue #11 (9.1 MB PDF)
GBPPR 'Zine - Issue #12 (4.1 MB PDF)
- Nortel DMS-100 Log Report Information
- Nortel DMS-100 Security Log Reports
- Nortel DMS-100 Table DNINV
- Nortel DMS-100 Table TOFCNAME
- Manhole Covers - Removing & Replacing
- Rescue of Employee from Manhole
- Mosque Time-Lapse Surveillance Camera
- Bonus: Old SARTS/SMAS Note
- Error: Error in Issue #8
- March 2005
- md5sum: e73c39c97bb4a1fbe50efb4b212d2a05
- Internet Archive Entry
GBPPR 'Zine - Issue #13 (8.9 MB PDF)
GBPPR 'Zine - Issue #14 (4.7 MB PDF)
- Nortel DMS-100 Table AMAOPTS
- Nortel DMS-100 AMA Log Reports
- Nortel DMS-100 SOS Script Overview
- Vehicle Tracking Beacon
- TV-B-Gone Jammer
- Outside Plant Symbols
- Outside Plant Codes
- Bonus: Hack the Planet!
- May 2005
- md5sum: 289b4a7f57d42f8a3b5e52af810168ea
- Internet Archive Entry
GBPPR 'Zine - Issue #15 (10.5 MB PDF)
- Lucent #1A ESS Input Message Overview
- Example #1A ESS Input Messages
- 800 Service - Originating Screening Office / #1A ESS
- 800 Service - Terminating End Office / #1A ESS
- GBPPR Mk-1 FRS ECM Device
- Electronic Switching Systems From the book Basic Telephone Switching Systems, by David Talley
- Bonus: Lockheed Skunk Works Logos
- June 2005
- md5sum: fbe570d61cd67dcbce444cbc2bc3ae09
- Internet Archive Entry
GBPPR 'Zine - Issue #16 (13.9 MB PDF)
GBPPR 'Zine - Issue #17 (12.3 MB PDF)
GBPPR 'Zine - Issue #18 (13.0 MB PDF)
- Universal Emergency Service Number 911 / #1A ESS - Enhanced 911 Service - Part 2
- How to Remove 1MR Lines in the DMS Switch
- Nortel DMS-100 Line Assignment Table (LENLINES)
- GBPPR Silent Drill
- Bonus: Help Stop the ACLU
- September 2005
- md5sum: 7de8fa257b481fdf4bec31458f93090f
- Internet Archive Entry
GBPPR 'Zine - Issue #19 (7.8 MB PDF)
GBPPR 'Zine - Issue #20 (4.4 MB PDF)
GBPPR 'Zine - Issue #21 (8.9 MB PDF)
GBPPR 'Zine - Issue #22 (10.6 MB PDF)
GBPPR 'Zine - Issue #23 (5.6 MB PDF)
GBPPR 'Zine - Issue #24 (11.1 MB PDF)
GBPPR 'Zine - Issue #25 (10.9 MB PDF)
GBPPR 'Zine - Issue #26 (9.1 MB PDF)
- Bell System Safety Headgear Description and Use
- Bell System Outside Plant Symbols and Abbreviation
- Nortel DMS-100 Operator Verification Trunk Group Type
- Nortel DMS-100 Metallic Test Access Minibar Driver Table (MTAMDRVE)
- Radio Shack Scanner EL Backlight Control
- Dollar Bill Changer Photo Overview
- Bonus: You Won't See These in $2600 Magazine!
- May 2006
- md5sum: 728ea35d95dbe54575f9ae8fb0e3c6db
- Internet Archive Entry
GBPPR 'Zine - Issue #27 (10.9 MB PDF)
GBPPR 'Zine - Issue #28 (8.3 MB PDF)
GBPPR 'Zine - Issue #29 (8.8 MB PDF)
GBPPR 'Zine - Issue #30 (12.8 MB PDF)
GBPPR 'Zine - Issue #31 (10.9 MB PDF)
GBPPR 'Zine - Issue #32 (11.3 MB PDF)
GBPPR 'Zine - Issue #33 (7.5 MB PDF)
GBPPR 'Zine - Issue #34 (9.1 MB PDF)
- Plant Measurements Description / #1A ESS
- Nortel DMS-100 TRK163 & TRK164 Trunk Maintenance Logs
- Triplett Volt Meter Battery Modification
- Nortel DMS-100 Equipment Counts
- Improvised Counter-I.E.D. Armor - Part 2
- Bonus: Hackers
- January 2007
- md5sum: 3d7f22668a4330ec1724713fb3f50363
- Internet Archive Entry
GBPPR 'Zine - Issue #35 (7.2 MB PDF)
GBPPR 'Zine - Issue #36 (5.1 MB PDF)
GBPPR 'Zine - Issue #37 (7.1 MB PDF)
GBPPR 'Zine - Issue #38 (7.5 MB PDF)
GBPPR 'Zine - Issue #39 (8.5 MB PDF)
GBPPR 'Zine - Issue #40 (10.6 MB PDF)
GBPPR 'Zine - Issue #41 (7.7 MB PDF)
- Network Management - Software Subsystem / #1A ESS - Part 3
- Radar Circuits
- Minty 2600
- Motorola DTR Radio Review
- Disconnecting a BRI Line Under a DMS-100
- Bonus: F*ck Slashdot
- September 2007
- md5sum: 5031268c4b53131cb7570313e2558e6d
- Internet Archive Entry
GBPPR 'Zine - Issue #42 (7.5 MB PDF)
GBPPR 'Zine - Issue #43 (8.6 MB PDF)
- System Performance - Software Subsystem / #1A ESS
- Nortel DMS-100 Line Module Ring Code Table
- VGA Video Breakout Boxes
- Fake Rock Hiding Space
- Bonus: Victory Garden
- November 2007
- md5sum: 303c337d1b533c4ade47e530f49686a2
- Internet Archive Entry
GBPPR 'Zine - Issue #44 (10.8 MB PDF)
- #1A ESS Operation, Administration, and Maintenance Features - Part 1
- Computer Products Plus - Telecoupler II Acoustic Coupler Overview
- Telco Vendor Phone Numbers
- Radio Shack PRO-2006 Scanner Schematics
- Bonus: Cellphone Jammer Kooks
- December 2007
- md5sum: a18e871e974a062c021a8dc60f0c37e1
- Internet Archive Entry
GBPPR 'Zine - Issue #45 (5.5 MB PDF)
- #1A ESS Operation, Administration, and Maintenance Features - Part 2
- Nortel DMS-100 Trunk Maintenance Overview
- AC Mains Isolation Transformer
- AT&T Repair Order Procedures for Nortel DMS Offices
- Bonus: Lying Liars
- January 2008
- md5sum: bd2d07d5a87c4dc6a14de5461445b962
- Internet Archive Entry
GBPPR 'Zine - Issue #46 (7.5 MB PDF)
GBPPR 'Zine - Issue #47 (6.6 MB PDF)
- Bell System Station Protection and Grounds - Part 2
- Nortel DMS-100 Office Route Table (OFRT)
- Drill Bits for the Surveillance Technician
- Simple 4 kVDC Power Supply
- Bonus: Mimi
- March 2008
- md5sum: 9f15e5b9abfbfd6a340edf2d132b7b34
- Internet Archive Entry
GBPPR 'Zine - Issue #48 (5.6 MB PDF)
- Bell System Station Protection and Grounds - Part 3
- Nortel DMS-100 TOPS Audio Table (TOPAUDIO)
- 2.4 GHz Spectrum Analyzer Adapter
- Ameritech Mechanized Accounts Payable System Logon Information
- Bonus: The CIA Created AIDS?
- April 2008
- md5sum: 299791fa1525931b9f4c3b1d9eb36094
- Internet Archive Entry
GBPPR 'Zine - Issue #49 (6.4 MB PDF)
- Processor Capacity Considerations - Network Switching Engineering / #1A ESS
- Homebrew 150 Watt 20 dB Attenuator
- Nortel DMS-100 Home NPA Route Reference Subtable (HNPACONT.RTEREF)
- Simple 800 MHz Cellular Phone Jammer
- Bonus: Guns
- May 2008
- md5sum: cde160fc2878f0eefed1d61b277a6f49
- Internet Archive Entry
GBPPR 'Zine - Issue #50 (6.7 MB PDF)
- Alcatel 1603/12 SONET Multiplexer - Craft Interface Operation
- Alcatel 1603/12 SONET Multiplexer - Security/User Authorization
- Gasoline From Coal?
- Nortel DMS-100 Automatic Number Identification Attributes Table (ANIATTRS)
- Portable Antenna Mast System
- Bonus: Change
- June 2008
- md5sum: 90cd2b94e8ea721bb2e4700a33f0ba31
- Internet Archive Entry
GBPPR 'Zine - Issue #51 (9.8 MB PDF)
GBPPR 'Zine - Issue #52 (9.8 MB PDF)
- Tie Trunk and Foreign Exchange Service Features / #1A ESS
- Nortel DMS-100 CDC101 Customer Data Change Log
- Nortel DMS-100 CDC102 Customer Data Change Log
- GBPPR Stereo Zapping Experiments
- Bonus: I Love Yahoo!
- August 2008
- md5sum: 03183ce67dad3b25d3ba79e928138798
- Internet Archive Entry
GBPPR 'Zine - Issue #53 (7.9 MB PDF)
GBPPR 'Zine - Issue #54 (7.7 MB PDF)
- Software System Introduction - Software Description / #1A ESS - Part 1
- Antenna Switch for 2.4 GHz Applications
- Nortel DMS-100 Originating Line Number Screening Service/Equipment Display Table (OLNSEQDP)
- DMS-100 Toll-Free Service Screening Table (TFSSCRN)
- He's Not Muslim! LOL!
- Bonus: Community Organizing
- October 2008
- md5sum: 330596e39f49803b9c7b20058254f695
- Internet Archive Entry
GBPPR 'Zine - Issue #55 (13.0 MB PDF)
- Software System Introduction - Software Description / #1A ESS - Part 2
- Rotary Coaxial Cable Connection Experiments
- DMS-100 Directory Number Route (DNROUTE)
- Horn Antenna for 2.45 GHz Microwave Oven Magnetrons
- Bonus: Fail
- November 2008
- md5sum: 6d89d161daf8eca27b65074dda1df18a
- Internet Archive Entry
GBPPR 'Zine - Issue #56 (6.2 MB PDF)
- Software System Introduction - Software Description / #1A ESS - Part 3
- DMS-100 Table Prompt Tones (TPROMPTS)
- DMS-100 Trunk Options (TRKOPTS)
- Homebrew CIA OTS Pencil
- Bonus: Hacking NORAD Fail!
- December 2008
- md5sum: 7a5eebbfd6386ed8b3ab844731e1b92f
- Internet Archive Entry
GBPPR 'Zine - Issue #57 (7.6 MB PDF)
GBPPR 'Zine - Issue #58 (8.6 MB PDF)
GBPPR 'Zine - Issue #59 (7.8 MB PDF)
- Software System Introduction - Software Description / #1A ESS - Part 6
- Derived Feeder Cable Names
- Ameritech Procurement Management System
- Sony SPP-ID910 Digital 900 MHz Telephone Experiments
- Bonus: Patterns
- March 2009
- md5sum: 4946b4a766df7e608c41a165a08a24e1
- Internet Archive Entry
GBPPR 'Zine - Issue #60 (9.6 MB PDF)
- Software System Introduction - Software Description / #1A ESS - Part 7
- DMS-100 TOPS Holiday Table (HOLDAY)
- DMS-100 TOPS Holiday Treatment Table (HOLTRT)
- Radio Shack PRO-2042 455 kHz I.F. Filter Modifications
- Bonus: Teleprompter President
- April 2009
- md5sum: 1e9c4bc22a0d4b184fe3327cd70f0a4f
- Internet Archive Entry
GBPPR 'Zine - Issue #61 (7.1 MB PDF)
- City Wide Centrex Implementation Procedures / #1A ESS - Part 1
- Nortel DMS-100 Incoming End Office Trunk Group Type
- Radio Shack PRO-2042 10.7 MHz I.F. Filter Modifications
- Homebrew Lock-In Amplifier
- Bonus: RTTY Pr0n
- May 2009
- md5sum: 2460f4caa9969ae0ae9313b39470ccc6
- Internet Archive Entry
GBPPR 'Zine - Issue #62 (8.7 MB PDF)
GBPPR 'Zine - Issue #63 (7.7 MB PDF)
GBPPR 'Zine - Issue #64 (6.1 MB PDF)
- Intelligent Simplex Peripheral Interface / #1A ESS - Part 2
- Nortel DMS-100 Hunt Group Table (HUNTGRP)
- Simple Pulse Generator
- Riding on a Moon Beam
- Bonus: Field Day 2009
- August 2009
- md5sum: b26be48a7fa3618a179af9018e0e4a4d
- Internet Archive Entry
GBPPR 'Zine - Issue #65 (7.0 MB PDF)
GBPPR 'Zine - Issue #66 (9.9 MB PDF)
GBPPR 'Zine - Issue #67 (10.5 MB PDF)
GBPPR 'Zine - Issue #68 (11.8 MB PDF)
GBPPR 'Zine - Issue #69 (9.3 MB PDF)
GBPPR 'Zine - Issue #70 (7.0 MB PDF)
GBPPR 'Zine - Issue #71 (6.0 MB PDF)
- HILO 4-Wire Operation & Maintenance Software Subsystem Description / #1A ESS
- 13 GHz Frequency Counter Prescaler
- DMS-100: Master List of Data Schema Tables - Part 1
- Bonus: Canada is NOT an Ally
- March 2010
- md5sum: 703bc5ec0dcc2fe16b0e1d5613aff5c0
- Internet Archive Entry
GBPPR 'Zine - Issue #72 (11.6 MB PDF)
- 10A RSS Interface Description & Maintenance Considerations / #1A ESS
- Generic Dispatch System Release 3.1 User Manual - Part 1
- DMS-100: Master List of Data Schema Tables - Part 2
- 10 MHz TCXO Stable Time Base
- Bonus: Old Bell System Ham Radio Ad
- April 2010
- md5sum: c318659fd2adce6a0443c9384db95da5
- Internet Archive Entry
GBPPR 'Zine - Issue #73 (11.4 MB PDF)
- Maintenance Program Organization Description / #1 ESS
- Generic Dispatch System Release 3.1 User Manual - Part 2
- DMS-100: Master List of Data Schema Tables - Part 3
- Experimenting with a Stellex YIG Oscillator - Part 1
- Bonus: Dear Europe
- May 2010
- md5sum: 1fc03c74a048a4a07fe5e1a59382f476
- Internet Archive Entry
GBPPR 'Zine - Issue #74 (12.0 MB PDF)
- Flexible Incoming Call Restriction Feature / #1A ESS
- Generic Dispatch System Release 3.1 User Manual - Part 3
- DMS-100: Master List of Data Schema Tables - Part 4
- X-Band Receive Converter
- Bonus: CDR Data
- June 2010
- md5sum: 598ce96308a2b470fe1eefa5be86aab6
- Internet Archive Entry
GBPPR 'Zine - Issue #75 (11.9 MB PDF)
- Speed Calling Feature / #1A ESS
- Generic Dispatch System Release 3.1 User Manual - Part 4
- DMS-100: Master List of Data Schema Tables - Part 5
- OmniTRACS RF/Synthesizer Board Conversion
- Bonus: And It Shows...
- July 2010
- md5sum: e674f326fd58d66460143d893e893594
- Internet Archive Entry
GBPPR 'Zine - Issue #76 (12.3 MB PDF)
- Customer Controlled Station Restriction Feature / #1A ESS
- Generic Dispatch System Release 3.1 User Manual - Part 5
- Simple 2.4 GHz Receive Pre-Amplifier
- 2 Watt RF Power Amplifier for 10 GHz
- Bonus: Baa... Baa... Little Sheep
- August 2010
- md5sum: 7f891a31f64337a06015a79a15e0f990
- Internet Archive Entry
GBPPR 'Zine - Issue #77 (7.8 MB PDF)
GBPPR 'Zine - Issue #78 (9.0 MB PDF)
- SLC-96 Fault Locating and Order Wire Panel Installation / Turn-Up & Tests - Part 2
- 10 Watt RF Power Amplifier for 2.4 GHz
- Nortel DMS-100 Enhanced 911 Public Safety Answering Point (E911PSAP)
- Ameritech Digital Transport Engineering Responsibility List
- Bonus: Miserable Failure
- October 2010
- md5sum: ef3fa9f92e98d78a293a3ab7868f0992
- Internet Archive Entry
GBPPR 'Zine - Issue #79 (8.1 MB PDF)
- Door County, Wisconsin Enhanced 911 Information
- Nortel DMS-100 Enhanced 911 Emergency Service Number Table (E911ESN)
- Simple X-Band Receive Pre-Amplifier
- Copper Pipe End Cap 10 GHz Bandpass Filters
- Bonus: Thanks Sweety!
- November 2010
- md5sum: 33a218145129af465c19642cf3ae5d8e
- Internet Archive Entry
GBPPR 'Zine - Issue #80 (8.7 MB PDF)
GBPPR 'Zine - Issue #81 (5.1 MB PDF)
- Teltronics TR-400 Toll Restrictor
- Nortel DMS-100 Enhanced 911 Direct Access to ALI Controller Table (E911ALI)
- Nortel DMS-100 Multi-Protocol Controller Login Table (MPCLOGIN)
- 10.7 MHz FM Demodulator Circuit
- Bonus: All Canadians are Stupid
- January 2011
- md5sum: ba91bbff1f7775ea6dfdcc198e3bd614
- Internet Archive Entry
GBPPR 'Zine - Issue #82 (10.9 MB PDF)
GBPPR 'Zine - Issue #83 (17.6 MB PDF)
GBPPR 'Zine - Issue #84 (7.0 MB PDF)
GBPPR 'Zine - Issue #85 (16.9 MB PDF)
GBPPR 'Zine - Issue #86 (9.6 MB PDF)
GBPPR 'Zine - Issue #87 (12.8 MB PDF)
- Lawfully Authorized Electronic Surveillance / 5ESS - Part 3
- High-Quality Visible & Infrared Light Sensors
- Nortel DMS-100 E911 Log Reports - Part 2
- Simple Optical Receiver Project #1
- Bonus: Yes
- July 2011
- md5sum: b50013dac46394f790a987cf7bc91040
- Internet Archive Entry
GBPPR 'Zine - Issue #88 (14.1 MB PDF)
- Lawfully Authorized Electronic Surveillance / 5ESS - Part 4
- Nortel DMS-100 TOPS Domestic Credit Card Check Digit Table (CHKDIGIT)
- Nortel DMS-100 Circuit Digit Table (CKTDIGIT)
- GBPPR Homebrew Printed Circuit Boards
- Sony NTM-910 Baby Monitor Information
- Simple Phone Line Tap
- Bonus: Sound Familiar?
- August 2011
- md5sum: 3747a525ebcb8e1c76d69f8f0b2ff36f
- Internet Archive Entry
GBPPR 'Zine - Issue #89 (16.2 MB PDF)
GBPPR 'Zine - Issue #90 (17.8 MB PDF)
- Lawfully Authorized Electronic Surveillance / 5ESS - Part 6
- Brown County Bomb Squad Robot
- Intercepting Older Digital Cordless Phones
- Sony SPP-ID910 Schematics
- Bonus: So Much for Freedom of Speech
- October 2011
- md5sum: cf39bfec9b3ffe2068c00a677735a49e
- Internet Archive Entry
GBPPR 'Zine - Issue #91 (7.4 MB PDF)
GBPPR 'Zine - Issue #92 (2.3 MB PDF)
- 5ESS Switch Input Message - OP:ILHB
- 5ESS Switch Output Message - OP:ILHB
- RF Phase Detector Using an AD8302
- 2 GHz Converter for the GBPPR Spectrum Analyzer
- Bonus: Bell Van Ad
- December 2011
- md5sum: 15073cfa0830a96fa2d0b70584d594bf
- Internet Archive Entry
GBPPR 'Zine - Issue #93 (9.7 MB PDF)
GBPPR 'Zine - Issue #94 (11.7 MB PDF)
GBPPR 'Zine - Issue #95 (10.3 MB PDF)
- Office Overload Controls Feature / #1 ESS - Part 2
- Simple UFO Detector
- High-Current 24 VDC Power Supply
- Bonus: DHS at Work
- March 2012
- md5sum: 6d0c058d4597bf0b8ff5bef7b46c9846
- Internet Archive Entry
GBPPR 'Zine - Issue #96 (13.5 MB PDF)
GBPPR 'Zine - Issue #97 (7.1 MB PDF)
GBPPR 'Zine - Issue #98 (6.7 MB PDF)
GBPPR 'Zine - Issue #99 (9.3 MB PDF)
GBPPR 'Zine - Issue #100 (8.9 MB PDF)
- Digital Carrier Trunk Interface - Description and Maintenance / #1A ESS
- 10 MHz Rubidium Frequency Reference
- Building a Centrex Service in a DMS-100 Switch
- Bonus: Stop Internet Censorship
- August 2012
- md5sum: d4ba7ca2187935e5af8e2a697bfcbfc3
- Internet Archive Entry
GBPPR 'Zine - Issue #101 (5.9 MB PDF)
GBPPR 'Zine - Issue #102 (12.5 MB PDF)
- 5ESS Input Messages - Part 1
- Frequency-Agile FM Surveillance Bug
- Subcarrier Generator for a FM Surveillance Bug
- Decibel DB786DC5N-XM Antenna Return Loss Plot
- Bonus: Priorities
- October 2012
- md5sum: 652e67f9282b899fb6f31501545c6d51
- Internet Archive Entry
GBPPR 'Zine - Issue #103 (9.3 MB PDF)
- 5ESS Input Messages - Part 2
- Subcarrier Decoder for a FM Surveillance Bug
- WA5VJB Microwave Antenna Experiments
- Bonus: Terrorist Alert
- November 2012
- md5sum: 1f53aaac79de16cd6111bc755a3c13e4
- Internet Archive Entry
GBPPR 'Zine - Issue #104 (10.0 MB PDF)
GBPPR 'Zine - Issue #105 (11.0 MB PDF)
GBPPR 'Zine - Issue #106 (10.3 MB PDF)
GBPPR 'Zine - Issue #107 (8.8 MB PDF)
- 2-Wire Toll/Tandem Operation Feature / #1A ESS
- Trango VRX2550 2.4 GHz Video Receiver Experiments
- Bonus: Droney
- March 2013
- md5sum: fa129e49651eb3751c489b7874b280b1
- Internet Archive Entry
GBPPR 'Zine - Issue #108 (8.6 MB PDF)
- Centrex Data Facility Pooling - Implementation Procedures / #1A ESS - Part 1
- Trango VTX2500 2.4 GHz Video Transmitter Experiments
- 1 Watt RF Power Amplifier for 1.5 GHz
- Bonus: Motorola
- April 2013
- md5sum: adf57efb4fa645988ee752913a7890bc
- Internet Archive Entry
GBPPR 'Zine - Issue #109 (7.6 MB PDF)
GBPPR 'Zine - Issue #110 (6.6 MB PDF)
GBPPR 'Zine - Issue #111 (5.9 MB PDF)
- Centrex Data Loop and Console Control - Description & Theory / #1A ESS - Part 2
- Simple Method to Defeat Outdoor Infrared Motion Sensors
- Bonus: Behold
- July 2013
- md5sum: 1817c543d0614ed0e0978c44b20ea191
- Internet Archive Entry
GBPPR 'Zine - Issue #112 (9.8 MB PDF)
GBPPR 'Zine - Issue #113 (8.1 MB PDF)
GBPPR 'Zine - Issue #114 (3.8 MB PDF)
GBPPR 'Zine - Issue #115 (6.0 MB PDF)
GBPPR 'Zine - Issue #116 (6.5 MB PDF)
GBPPR 'Zine - Issue #117 (3.8 MB PDF)
GBPPR 'Zine - Issue #118 (8.4 MB PDF)
GBPPR 'Zine - Issue #119 (5.8 MB PDF)
GBPPR 'Zine - Issue #120 (5.5 MB PDF)
GBPPR 'Zine - Issue #121 (12.1 MB PDF)
GBPPR 'Zine - Issue #122 (6.1 MB PDF)
