>From 1995 in QST "ALE Disadvantages There are a couple of detractors related to ALE that exist for amateurs. These are frequency selection and interference problems. Unlike the government, which has a greater selection of frequencies, amateurs are confined to specific bands. ALE requires a wide range of frequencies to select the best channel. In addition, the initial linking call could interfere with other digital signals on that same frequency. You must listen before transmitting or attempting to link. I can see how regulation and much discussion needs to take place before ALE will become practical for amateur use. It can be a realityif the minds of many solve the problems that face our unique situation."
Looks like the "minds of many" have not met despite 15 years to solve the matter. Andy K3UK
