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VHF DSC: Purchasing Considerations
(Fixed Mount, for DSC features)
As of March 2011, fixed mount VHF DSC radios sold
as new in the USA must be at least “Class D”
compliant
– That means they must have a radio receiver dedicated to
DSC on channel 70
– There are some other functional changes from being
“SC101” or “SC-101” DSC compliant to being “Class D”, the
most important of which is not automatically switching to a
requested working channel until acknowledged via a button
push (avoids automatically switching away from a
drawbridge conversation on CH 13, for example).
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