We check all the links at least once per month. We guarantee that 99% of the links are operational or flagged as "Out of order". Non working links are first flagged as "Out of order". If the link stays dead we remove it later from the list after an unsuccessful attempt to find out a new address.
International Components Corporation
International Crystal Manufacturing
In German)
ATV transmitter, amplifiers and components in Karlsruhe
Dealer
Institute of Electrical and Electronics Engineers, Inc
QSL Manager and on-line DX addresses
QSL Info
Italian Lake Islands Award
Special Xtal filters
by KE3FL
Crystal filters
by Glen Hauser
DTMF decoders
by VE3NEA
Theory
from the RSGB
Islands on the Web
International Police Association Radio Club - Germany
International Police Association Radio Club - USA
Semiconductors
Iceland
Icelandic Radio Amateur
DX QSL.net
Independent Regulators Group Information Sharing
The Internet Radio Linking Project
Is n° 870 on the IRLP list
Irish Radio Transmitters Society
Irish Radio Transmitters Society (IRELAND)
International Organization for Standardization