numbers

Australian Vintage Radio - How old is my valve Radio? this website host a reference of model numbers and year of manufacture for many antique radios

Irish Lighthouses - lighthouses and lightships of ireland and northern ireland with arlhs reference numbers for all irish lights

IOTA Groups and Reference Numbers - Short Format List of IOTA Groups and Reference Numbers

IOTA Bearing & Distance list for your QTH - A list of all IOTA reference numbers and IOTA groups for the Islands On The Air award, personalised to your own QTH

Numbers Stations - About numbers stations, and their criptic transmissions, where to listen to them and some audio recording samples by fascinating shortwaves

GIGAVAC Ham Radio Relays - Gigavac is a leading designer, manufacturer, and worldwide seller of contactors and high voltage relays using vacuum, gas filled, and high voltage reed relay technology. hv relay applications information with cross reference charts for kilovac / tyco, jennings, and crydom part numbers.

MorseFusion: The novel way to learn Morse code. - Learn the new, natural way: Have a novel of your choice spelled out in English letter by letter. Letters and numbers gradually get replaced by Morse code.

Understanding propagation numbers - Quick reference table on understanding A K SFI indexes and how can be translated in usable frequency opportunities

What the numbers mean in propagation - What the Numbers Mean, and Propagation Predictions--a brief introduction to propagation and the major factors affecting it.

Predicted Sunspot Numbers and radio flux - Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center

The Rig Register - Database for Stolen Ham Gear - Users store their equipment details and serial numbers in the database for safe keeping and can then mark them as lost or stolen.

How QST elaluates new products - A look behind the scenes, learn how the ARRL laboratory evaluates new products, and what all those numbers mean to you by WA1SVF

HFUnderground - HFUnderground.com is dedicated to documenting longwave, mediumwave, and shortwave stations, including broadcasters, utility/military stations, pirate radio and spy numbers stations.

LouisvilleScanMan - One stop site for scanner users in Louisville Kentucky. Frequencies,10-Codes,Unit Numbers,Scanner News and more. Covering Fire,Police,EMS,Disaster,Civilian Emergency,Aviation,Railroad and other services.

Spy Numbers Stations - N2UHC's Radio Stuff - Spy numbers stations are stations on HF that transmit messages consisting of groups of numbers. Sometimes letter groups are sent instead

Covert Comms Archive - Covert Comms was a monthly column wrote for the ACE newsletter from 1997 to 2002. The column was devoted to numbers stations, unidentified signals, intelligence information, and other related information

Introduction to Spy Numbers Transmissions - Introduction to Spy Numbers Transmissions

Numbers & Oddities - Numbers stations and other odd radio stations, espionage, jamming, cryptography, code messages, sigint

E10 Spy Numbers - This page list schedules for the E10 Spy Number shortwave radio station, commonly believed to be run by mossad.

Toroid cross reference - Construction articles in magazines and books often use part numbers of firms no longer in business or whose parts are hard to find. Here you can locate the palomar toroids equivalent