Modifications to the IC-751A for the Digital Modes

Update 12/21/17: Added section on upgrading the reference crystal to a high stability OCXO clock. The 30 year old ICOM HF radios still have a bit of life in them if given the chance.  I've managed to work all of the states and more than 140 countries using the digital modes with my old IC-751A... Continue Reading →

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