I'm sorry, guess it would have been better if i had given more info about the system.
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OS is Ubuntu on several different laptop computers ranging from Ryzen 5, 7, & 9 as well as Intel I-7,
does it with all of them.
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The radio is an ICOM T2H with an external antenna that is not set up for transmitting, no cabling to the
microphone or to the PTT ... RXD and ground only.
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I had thought about copying the settings in the tnc's, however they are different ... the +3 USB is the latest version
and the plain KPC-3 is, i think, version 6.0.? Also, while i have various other VHF Marine radios as well as HF Amateur
radios aboard, none of them are operating while i am trying to get this system up and running.
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Please note that this setup is used on my boat as an aid to navigation as an adjunct to OpenCPN and will never be put into transmit.
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It may be that i will just need to deep 6 the +3 USB and find an older unit like the plain -3 i already have.
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Thank you for your suggestions and help.
