Speleonics #1
Volume 1 #1 Spring 1985

Speleonics Premier Issue (1)
Editorial (1)
Section Logo (drawing) (1)
Calling all Cave Radios (2)
QST (2)
Magnetic Moments (3)
Radio Communications in Ape Cave, Wash (5)
Emergency Lightbulb Repair (6)
Organ Cave System Radio (7)
A Telephone to Radio Repeater for Cave Rescue (7)

Speleonics #2
Volume 1 #2 Summer 1985

Editorial (1)
Needed: A working Cave Radio (1)
Report on Cave Communication and Electronics Section Meeting (2)
Magnetic Moments #2 (4)
Cave Communications Bibliography (7)
Thoughts towards designing an "International" Cave Radio: Choosing an operating frequency. (9)
Communications Standard #1 12 volt DC power (11)

Speleonics #3
Volume 1 #3 Fall 1985

Cave Radio Ethics: Artificial Entrances (editorial) (1)
Slug Tuned Coil (cartoon) (1) Organ Cave Radio (2)
Organ Cave Trip Report (3)
Cave Rescue Communications: Linked Systems

Speleonics #4
Volume 1 #4 Spring 1986

Entranceless Caves (editorial) (1)
Corrections to Organ Cave Radio (1)
Letters (1)
Simple Circuit for Automatic Second Bulb (3)
The Unique Self Climbing Ladder (4)
Some Thoughts on Cave Radio Antenna Design (6)
High Power on 160-189 kHz? (7)
Radios Save Caves (7)
Cave to Surface Communications (8)
How to Make an Ultrasonic Rangefinder (10)
Caving with the Polaroid Ultrasonic Rangefinder (10)
Inexpensive 2.5 MHz WWV Receiver (11)
Membership List (12)
Late Section News (12)
The Michie Phone System (13)
Cartoon (14)
Input Wanted (14)

Speleonics #5
Volume 2 #1 Summer 1986

Editorial (1)
Letters (1)
Announcements (2)
Circuit Description, Alberta Speleological Society Cave Radio (3)
LED Survey Target from Modified Flashlight Bulb (10)
Welcome New Members (10)
Bibliography Supplement (11)
LORAN C for Cavers (12)
Cartoon (13)
Notice to Subscribers (13)

Speleonics #6
Volume 2 #2 Fall 1986

Editorial (1)
Announcements (1)
Letters (1)
Nuclear Flashlights! (2)
Flashlight Maintenance (3)
The Firefly Lamp (4)
Electric Caving Before Lightbulbs or Carbide (6)
Help Needed: Recharging Batteries Underground (7)
Mine Lamp Charger (8)
Magnetic Moments #4: Ferrite Core Antennas (10)
Resources (11)
New Products (12)
Late News (12)
The Cave Assault Tube (13)
Light source Launcher (13)
Lighting Up Your Suunto (14
Abstracts (15)
Cartoons (9) (15)

Speleonics #7
Volume 2 #3 Spring 1987

Announcements (1)
Letters (2) (3)
Emergency Watch Repair for Cavers (3)
Where the Sun Sometimes Shines: Solar Power at a Cave Research Field Station (4)
Cave Radio M-85 (8)
Magnetic Moments #5: The Phase Problem (11)
QRP Transmitting and Receiving on 800-1000 Hz (305,000 meters!) (13)
Resources (14)
Radon Monitoring in Caves (15)
Radon Sampling in the Mammoth Cave System (16)
The Ogofone (16)
NPS Radio Freqs (16)
Phone Patch Connects Cave to Hospitals (17)
Cave Rescue Communications Equipment Checklist (18)
Bat Power Patch (1)
BNC (Big Name Caver) (3)

Speleonics #8
Volume 2 #4 Summer 1987

Editorial (1)
1987 NSS Convention Electronics Session Report (1)
Letters (2)
Partial List of Past and Present Cave Radio Frequencies (3)
DECCA Navigation System Information (3)
British "Molefone" Voice Transceivers Tested at U.S. Cave Rescue Seminar (4)
A Short Bibliography of Electric Cave Lighting (6)
The PBR Flash Gun (9)
Long Range Cave Radio (10)
Magnetic Moments #6: The Transition Zone (13)
Abstracts (14)
Resources (14)
Cartoon (15)
Hunting for Dinosaur with Radar (15)

Speleonics #9
Volume 3 #1 Winter-Spring 1987-88

Just for Fun (1)
News and Announcements (2)
Letters (4)
Sensitive Slave Flash for Cave Photography (5)
Recent Developments in Superconductivity Research (6)
A Cave Radio in the Field - Summer 1987 (7)
Magnetic Moments #7: Electromagnetic Noise - Natural Sources of Noise (9)
Battery Date Codes (11)
Morse Code Aptitude Test (11)
Resources (11)
The Mini Maglite(tm) and Variants: Electrical Tests and Caver Modifications (12)
In Review (13)
Frequencies of Interest: 1988 NSS Convention (13)
Electronic Wristwatch makes Emergency Flashlight (14)

Speleonics #10
Volume 3 #2 June 1988

News and Announcements (1)
Letters (3)
Cave Rescue Communications Security (4)
Early Radio Experiments in Caves (5)
Will Electronic Compasses "Automate" Cave Mapping? (9)
Resources (10)
Electronic Caver Detectors (11)
Abstracts (11)
Publication Reviews (12) (14)
The Easiest Cave Radio: Extending The Range of Avalanche Beacons (13)
Cave Air Flow Detection (15)
New Low Frequency Newsletter (15)

Speleonics #11
Volume 3 #3 November 1988

Editorial (1)
News & Announcements (1) (2)
Letters (2)
Hruska's Wheel Antenna (3)
The Mendip rescue Organization (MRO) Antenna (4)
ASS Giant Antenna (4)
Receiving Cave Radio Signals With a Whip Antenna (5)
Magnetic Moments #8: Antenna Noise (6)
Coil Winding Machines (6)
Resources (7) (8)
Brian Austin Letter to "New Scientist" (8)
Monitoring Magnetic Declination (9)
Electric Drilling Hammers For Caving (10)
Reviews (12)
The Global Positioning System (GPS) (13)
The Atomic Adventure of Dennis Drain (13)

Speleonics #12
Volume 3 #4 April 1989

There is No Nobel Prize for Speleology (cover)
Editorial (1)
News & Announcements (1)
Australian Rescue uses Cave Radio (2)
Letters (3) (8)
Magnetic Moments #9: Ground Conductivity by Electromagnetic Methods (4)
Scientific Cave Location (6)
Capacities of Primary Cells (9)
Summary of the Cave Rescue Telephone Project (10)
Photos of Luminescent Cave Minerals Wanted (13)
Resources: Ultraviolet Lamps for Mineralogy (14)
Japanese Cave Radio used in World War II (15)
Reviews (15)
Electronic Bat Feeder (cartoon) (14)
Art by Jay Jorden (15)

Speleonics #13
Volume 4 #1 October 1989

Letters (1)
News & Announcements (2) (8)
Piezoelectric Ignition for Carbide Lamps (3)
Field Expedient VHF Direction Finder (6)
GPS Update (6)
I Built an Ultrasonic Receiver (7)
Batradio (7)
New Products (9) (10)
Resources (10)
The Geomagnetic Storm of 13 March 1989 (11)
Low Noise ELF (ULF Range) E-Field Preamplifier (12)
Experimental Heart Tachometer (13)
Altimeters for Cavers (14)
Art:

Speleonics #14
Volume 4 #2 February 1990

Editorial (1)
News and Announcements (2)
Letter (2)
Cave Camera Explodes (3)
Home Brew v. Commercial Equipment Test (4)
Sound System Aids Recovery of Worlds Largest Dinosaur (4)
Doolin Green Holes from the Surface (4)
CB Radio for Underground Communication (5)
Electronics in Action (6)
The 1967 Ingleborough field Meet Report: Induction Communications Systems in Caves (7)
James R. Wait - Senior Theorist of Cave Radio (8)
Impulse Radar Technology may yield "Cave Scope" (8)
Bat Phone (9)
Book Review (9)
More on Altimeters for Cavers (10)
Casio Altimeter Watch Notes (10)
Interesting References (10)
Magnetometer Notes (11)
Recording Jam Jar Magnetometer (11)
Radionavigation System Developments (12)

Speleonics #15
Volume 4 #3 October 1990

Editorial (1)
News and Announcements (1)
Letters (2)
Resources and New Products (2)
Atomic Strobes and Other Exploding Things (3)
Mapping Caves Magnetically (4)
Voices From the Past (5)
Great Moments in Early Cave Radio Experiments (6)
1990 NSS Convention Electronics Session (6)
Self Potential Surveys (7)
Bibliography Supplement (8)
French Electric Mine Lamp Used in 1869 (9)
Interesting References (9)
The Wet Noodle Field Phone (10)
Charging Sealed Lead Acid Batteries (13)
Cartoon (13)
Update on Induction Cave Radio (14)
New Super High Brightness LED's (14)
False Center Found in Unusual Radiolocation (15)

Speleonics #16
Volume 4 #4 May 1991

News and Announcements (1)
1991 NSS Convention Electronics Abstracts (2)
Wheat(tm) Lamp Notes (2)
The Stanley Estimator and Other Miscellaneous Ramblings (3)
Measuring Ground Conductivity with a Cave Radio (4)
Rockwell GPS Receiver (6)
Cavers Get Hands On Experience with GPS Navigation (7)
Resources, References, New Products (8)
Early Advances in Underground Radio Communication (9)
Rejuvenating Sealed Lead Acid Cells (12)
Earth Dipole Communication Notes (12)
Phone Patch for Handheld Radios (13)

Speleonics #17
Volume 5 #1 April 1992

News and Announcements (1)
Kartchner Caverns Cave Meteorology System (2)
The Use of Data Loggers in Cave Science (5)
Wet Noodle Passes Field Test (7)
Photoelectric Caver Counter (8)
Fluorescent Lights for Caving? (9)
Maglite(tm) Flashlight Field Repair (10)
A Peculiar Battery Problem (10)
British Cave Research Association Cave Radio and Electronics Group (10)
BCRA Publishes Easily Built Cave Radio (11)
1991 Cave Rescue Communications Notes (11)
Electronic Thermometers Tested at Practice Cave Rescues (11)
Instant Cave Phone (12)
TA-1/PT Sound Powered Telephone Notes (12)
Resources and Interesting References (13)

Speleonics #18
Volume 5 #2 July 1992

Letter (1)
Announcement (1)
Alkaline Primary Cell Failure Mode (2)
Incandescent Lamp Parameter Variation with Voltage (2)
Switching Voltage Regulators for Lead Acid Battery Chargers (3)
H2 Catalysis for Sealed Strobes (5)
More on High Brightness LED's (6)
Amber LED Notes (9)
A Cheap and Portable Homemade Ultraviolet Lamp (10)
Resources and Interesting References (11)
Piezoelectric Sound Powered Telephone (11)
Characteristics of Bulbs Used in Mini Maglite(tm) Flashlights (12)
Radio Frequencies of Interest to Cavers (USA) (12)
Flashlight Surgery (12)

Speleonics #19
Volume 5 #3 May 1993

Editorial (1)
Letters (1)
Erratum (1)
News, Announcements, Resources (2)
Converting CB Radios for Use As Low Frequency Cave Radios (3)
Further Developments With The CB Transverters (9)
Quartz Halogen Cave Light (10)
Electric Caver Heater versus Chemical Heat Packs (10)
Amplifier Handset Enhances Cave Rescue Telephone (10)
Piezoelectric Sound Powered Phone Improved (11)
Wheat Lamp(tm) Charger Notes (12)
Cartoon (12)

Speleonics #20
Volume 5 #4 February 1994

Editorial (1)
Announcements (1)
Update on the CB Transverters for Cave Radio Use (2)
Cave Radios and The Law (3)
NSS Convention Report - 1993 (6)
Amateur Radio 160 M Challenge (7)
Book Review: "The Electromagnetics Problem Solver" (7)
Resources (7)
Magnetic Moments #10: A Probe to Measure RF Magnetic Fields and the Magnetic Moment of a Transmitting Loop (8)
Pulse Width Modulated Voltage Regulator for Electric Caving Lamps (9)
Caver Rescue Communications Notes 1993 (14)
Color Code Mnemonics (15)
Interesting References (15)

Speleonics #21
Volume 6 #1 March 1997

Call For Papers (1)
Annual Cavers Meeting at Dayton Hamvention (1)
Speleotardiness (1)
Radio Crosslink Experiments (2)
Resonant Speaker References (2)
Historic Earth Dipole Communications (3)
Repair your Mini Maglite Flashlights (6)
Foot Candles (6)
Rechargeable Alkaline Cells (7)
Alkaline Primary Cell Failure Mode Update (9)
The D-Q Beacon Receiver (10)
Wideband Portable Antenna (20)
NiCd Memory Effect Explained (20)
Update on High Brightness LED's (20)

Speleonics #22
Volume 6 #2 September 2001

Logo (1)
Information (1)
Section Officers (1)
Table of Contents (2)
Editorial (2)
Theory and Designs for Building a White LED Headlamp (3)
Firefly 2 Modification (7)
Light Bulbs for Caving Headlamps in the 21st Century (8)
Constructing a Linear Constant Current Dimmer for a White 24-LED Array (11)
Simple Current Limiting for LED Flashlights (14)
Equipment Review: Leica Disto classic3 Laser Distance Meter (15)
Build a Simple Bat Detector (16)
A Bat Simulator for Testing Bat Detectors (19)
GMRS and FRS Radio (20)
Another Gizmo I Can't Do Without (20)
LED Caving Lamp Development and Use (21)
Remote Cave Cameras (23)
Not Another LED Headlamp Miracle (24)
Message from the Chairman (25)
Minutes of the 2001 Communications and Electronics Section Meeting (25)

Speleonics #23
Volume 6 #3 August 2002

Logos (1)
Information (1)
Table of Contents (2)
Editorial (2)
Constitution (3)
Bylaws (4)
Section Officers 2002 - 2003 (6)
Yet Another Sensitive Slave for Flash Photography (7)
Camera Flash Adapter (10)
Endless Rope Climbing System with Dynamic Speed Control (13)
Water Tracing Experiments in Belize Using an Inexpensive Total Dissolved Solids Meter (15)
Cheap Field Telephone (20)
Minutes of the 2002 Annual Meeting (21)

Speleonics #24
Volume 6 #4 August 2004

Information (1)
Table of Contents (1)
Creating a Simple Regulated NiCd Cell Charger (2)
Minutes of the 2003 Annual Meeting (4)
An Imporved High Power 2496 KHz Radiolocation Beacon (5)
185 KHz Radiolocation and 7 MHz Communication Experiments (8)
Beacon Controller, Cave Radio, Remote, DTMF Programming (9)
Can You Patent an LED Flashlight? (10)
Thru-The-Earth 2-Way Vloice Communication With Cave Divers (12)
LED Flashlight White Paper (16)
Automatic Dark Detector Emergency Light (21)
Salvaging Throw Away Flash Cameras (22)
Computer Modeling Thru-The-Earth Communications Antannas (23)

Speleonics #25
Volume 7 #1 June 2005

Information (1)
Table of Contents (1)
A Firefly for Digital Cameras (2)
Minutes of the 2003 Annual Meeting (4)
Optimizing Circuits Using Computer Simulation (7)
Princeton Tec Yukon HL Hybrid + Headlamp (15)
A Luxeon LED for the Petzl MYO6 (20)
80 Meter HF Radio Experiments (25)

Speleonics #26
Volume 7 #2 July 2007

Title, Table of Contents (1)
A Radiolocation Devise for Cavers (2)
Review of the New Leica Disto (7)
Homebrew Earth Resistivity Meter (9)
AC Mains Timed Output Controller (13)
Lithium 123 Cells with Caving Headlamps (14)
An HF Portable Antenna (17)
Homebuilt HF Radios for Use Underground (19)
HF Radio at Grand Canyon Caverns (24)
2005 NSS Convention Minutes and Notes
2006 NSS Convention Minutes and Notes
Editor Notes