They coordinate the traffic between network radio server stations (RMS gateway stations), and provide the e-mail, telnet, bulletin and position reporting services. The Common Message Servers (CMS) are the common coordinating engines at the heart of the Winlink 2000 "star" Network configuration. The entire Spam-Control mechanism is sometimes referred to as the "WL2K Whitelist". Each WL2K user account has a Blacklist and a Whitelist. For an antenna, the frequency range is either side of a resonant frequency where the SWR is below 2 to 1.Ī list of email addresses or domains that will be rejected when sending mail inbound to a WL2K user from the internet. The effective or usable range of a resonant circuit, bandpass filter, transmitted signal, or antenna. Winlink 2000 uses the AX.25 Pactor protocol to carry its B2F Format.Ī designated range of frequencies within which operation is authorized.
The signaling protocol used by Winlink 2000 for passing data on VHF/UHF Packet channels. The US national organization for amateur radio. An interactive mode requiring feedback from a receiving station as a communication is sent. An error correction mode used in AMTOR, SITOR and PACTOR. Similar to marine SITOR in format.Īutomatic Repetition on Request. Uses error correction techniques (ARQ and FEC). Audio fluctuations cause changes in wave amplitude.Īmateur Teleprinting Over Radio. An old, broad bandwidth type of voice modulation used by shortwave and familiar 'AM' broadcast stations.
AirMail is a third-party program written and supported by Jim Corenman, KE6RK (see and is free of charge for amateur and MARS use.Īmplitude Modulation. It is a stand-alone program providing peer-to-peer connections between AirMail stations, propagation forecasting, a bulletin catalog, and canned forms for WL2K and MARS services.
It provides access to the WL2K system via telnet, VHF/UHF gateways, or HF Pactor gateway stations.
The oldest and most popular client software for Winlink 2000 system users. An automatic circuit in a receiver, or in firmware in some receivers and modems, used to maintain a constant level of audio gain output even though the incoming analog signal may be varying in strength. In Europe, 802.11 networks are often referred to by the term HAMNET.Īutomatic Gain Control. Amateur radio operators modify consumer 802.11 equipment to use power levels permitted under the amateur radio rules (FCC Part 97), when it is often called HSMM (High Speed MultiMedia). A wireless data communications standard specified by the IEEE.