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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RTL-SDR Pan-adapter using HDSDR with the IC-751A

There is little doubt that the RTL-SDR tuner dongle radio receivers are the hottest new thing for the amateur radio experimenter.  Re-purposing the $10 tuner dongle to be an extraordinarily wide-band software defined radio is the subject of countless internet articles and videos.  Here I am adding my experiences to the crowd.  What I will describe... Continue Reading →

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