HFLINK News About ALE
HF Digi Messaging
Emergency Comm
Get Started ALE
ALE Software
HFLINK is the international resource for ALE Automatic Link Establishment High Frequency Communications
HF Digital Messaging - Emergency / Disaster Relief - Interoperative Communications - Ham Radio

HFLINK

ALE HF Communications
High Frequency Network
HFLINK Group




ALE HF Communications
Ham Radio ALE HF Network
HFLINK Group Forum
Propagation Now
Ham Radio ALE
ALE On Air Now
ALE Frequencies Join HFLINK Free Read HFLINK Forum

About Automatic Link Establishment Member Supplies






HFLINK Home
HFLINK News
More HFLINK News
Join HFLINK Group - Free
Member Supplies
Automatic Link Establishment
Ham Radio ALE Operating
Ham Radio ALE HF Network 
ALE Channel Frequencies
ALE Software & Download
ALE Transceiver Info
ALE Antenna Info
ALE Comm Standards
ALE Technical Info
Ham Radio Bandplans
HF Propagation Now
ALE Geo Position Report
ALE Interoperable HF Comm










Ham Radio ALE High Frequency Network (HFN) - on the air 24-7-365 for 7 years


What is ALE?
ALE
is the acronym for Automatic Link Establishment.

ALE is the de-facto worldwide standard for initiating and sustaining communications using High Frequency radio. HF radio conveys signals via ionospheric propagation, a constantly changing medium.
A network of amateur radio ALE operators has been on the air 24-7-365 worldwide for over 7 years, using interference- free Ham- Friendly ALE techniques.
HOW AUTOMATIC LINK ESTABLISHMENT WORKS
PLAY VIDEO
With the capability to call up a specific HF station, a group of stations, a net, or a networked station, Automatic Link Establishment is a versatile system for connecting radio operators for voice, data, text, instant messaging, internet messaging, or image communications. A radio operator initiating a call, can within minutes have the ALE automatically pick the best frequency that both stations have. It then alerts both operators audibly and visually, so they can begin communicating with each other immediately. In this respect, it can eliminate the longstanding need for repetitive calling on pre-determined time schedules and monitoring static on HF radios.

How ALE Works
Each radio ALE station uses a callsign or address in the ALE controller.When not actively in communication with another station, each HF SSB transceiver constantly scans through a list of frequencies, listening for its callsign. To reach a specific station, the caller simply enters the callsign just like dialing a phone number. The ALE controller selects the best available frequency and sends out brief digital selective calling signals containing the callsigns. When the distant scanning station detects the first few characters of its callsign, it stops scanning and stays on that frequency. The two stations' ALE controllers automatically handshake to confirm that a link is established and they are ready to communicate.


The receiving station, which was muted up until now, will typically emit an audible alarm and visual alert for the receiving operator of the incoming call.
It also indicates the callsign of the linked station. The operators then can talk in a regular conversation. At the conclusion of the QSO, one of the stations sends a disconnect signal to the other station, and they each return their ALE stations to the scanning mode. Some military / commercial HF transceivers are available with ALE options. Amateur radio operators commonly use the PCALE soundcard software ALE controller, interfaced to a ham transceiver via USB or RS-232 CAT port, with multi-frequency antennas.

Automatic Link Establishment is a great tool for the purpose of communicating between stations in real-time, while avoiding guesswork, beacon listening, and complicated HF prediction charts altogether. ALE is most commonly used for hooking up operators for voice communications on SSB and for internet messaging, but there are many other useful features.
All hams are encouraged to use ALE for emergency / disaster communications and every-day common QSOs. Join us!

























Back to Top
About HFLINK
HFLINK HOME
Join HFLINK - Free






END OF PAGE

2014-2000 HFLINK div, of HFpack Inc. All Rights Reserved.

HFLINK, HF-LINK, HF LINK, and the HFLINK Logo are trademarks of HFpack Inc. Any external hyperlinks must only be to the main page of the HFLINK.COM website http://hflink.com . Capture of the HFLINK website or any part of it within the frame of another website is not permitted. HFLINK group forum is a private group. Public archiving, forwarding, or open display on the internet of HFLINK group forum or messages is forbidden. All text and images on the HFLINK website are property or copyright HFpack Inc, or when used by permission, are copyright by their respective owners, with all rights reserved.
HFN and High Frequency Network are service marks and trademarks of HFpack, Inc. No part of the HFLINK website or HFLINK Group Forum may be used or copied without written permission of HFpack Inc.
























































































































HFLINK is the international resource for ALE Automatic Link Establishment High Frequency Communications, HF Digital Messaging, Emergency / Disaster Relief, Interoperative HF Communications, HF Network, Ham Radio.