telephone number

LF/VLF Portable Loop Antenna - The octoloop antenna is a length of 25 pair telephone wire inside an octagonal loop shield of 3/4 hard copper pipe

Valve Data Sheets - This web page has full data sheets for a number of commonly used valves. Most are Eimac and include the 2C39A, 3-500Z, 3-1000Z, 3CX1500A7, 3CPX5000A7, 3CX5000A7, YC156, 3CX15000B7, 4CX250B, 4CX250A, 4CX1000A, 4CX1500B, 4CX10000J etc. These are not avialable on Eimac's web site in full - only brief notes.

Pacific IOTA Numbers - IOTA Designation for The Hawaiian Islands

Nienberge Amateur Radio Group Germany - "The Nienberge Amateur Radio Group a subdivision of the DARC - German Amateur Radio Club; our group's number is ""N 46""."

Split Rock Amer Radio Assn of Northern NJ - Northern NJ's number one club. Weekly swap n shop/net, VE sessions 2nd Monday, Meetings, Second Tuesdays. E-mail us to learn more.

K-Com - comprehensive line of products for rejection of Radio Frequency Interference (RFI) to telephone equipment.

DTMF Kit - DTMF-KIT1 board for Transceiver, board for Telephone-Line and Remote-control without a HAM Transceiver

Pacific Research Solutions - Repeater Controllers, Repeater Tone Panels, Telephone Interface, Remote Monitoring Systems, Process Control and TDS Monitors

Connect System - Controllers and Telephone interconnects.

Nathan Stubblefield - Kentucky farmer invents wireless telephone! But was it radio? Facts and folklore about Nathan Stubblefield by Bob Lochte.

900MHz telephone frequencies - Frequency table for 900Mhz phones

Sonne sunspot observations - Provisional sunspot numbers edited monthly by Martin Dillig

Sunspot number forecast - Provisional international monthly mean sunspot number

The Sunspot Cycle - Sunspot Numbers, The Butterfly Diagram, the Greenwich sunspot data and sunspot realted infos.

Sunspot numbers explained - Definition of smoothed sunspot number and R12 index

Sunspot Number - How sunspot numbers are computed

Spy Centre - All about Spy Numbers Stations, which send coded messages to agents. Includes schedules and frequencies of stations.

Spy numbers discussion group - Message board to discuss spy numbers stations & other intelligence-related topics.

Numbers stations - Info about number stations in french

RadioTelephone Tutor - Helps you study for the Ham Radio & FCC GROL exams. Often times, test questions are worded in ways; that fool you. RadioTelephone Tutor drills on missed questions, till you know the answers backwards and forwards. Can take entire question pools in straight, or random order. Creates a practice test; which represents what you would be given in a real exam.

Speak Freely - Free Internet telephone originally written in 1991 by John Walker, mostly a voip software

R25Log - R25Log is an universal Log-Program, developed by active Hams for active Hams. Tested and proved in real QSO-operation, it combines all functions of conventional log-progams with a number of new features and a wealth of informations, input- and evaluation-possibilities. Freeware run in DOS Shell

PacketCluster DX statistics - This program extracts statistics from a dx.dat file to show numbers of spots for each country on each band

Nova For Windows  ^pop - Real time tracking of an unlimited number of satellites, fast, accurate and easy to use. Automated FTP keps updates. Also support a great number of interface to control rotors azimuth and elevation plus frequency doppler shift.

HAMIC - The Ham Intelligent Calculator - HAMIC, is a program designed to simplify a number of calculations commonly used by HAMs. It is designed for the HAM radio hobbyist, but may be useful to others as well. HAMIC has a simple to use, but powerful graphical interface that allows solving simple circuits such as resistors in series or parallel, or more complex circuits such as L networks or T networks. As well, other calculations such as SWR and reactance conversions are supported. Windows shareware.