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From: p_macdonald@eden.DEC (Workstations Pubs  223-3439)
Newsgroups: net.ham-radio
Subject: Packet
Message-ID: <2278@decwrl.UUCP>
Date: Mon, 20-May-85 11:43:09 EDT
Article-I.D.: decwrl.2278
Posted: Mon May 20 11:43:09 1985
Date-Received: Thu, 23-May-85 03:36:38 EDT
Sender: daemon@decwrl.UUCP
Organization: DEC Engineering Network
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Here's the scenario - I am using a Heathkit TNC and a Commodore 64.
I connect the 64 to the TNC via an MSD RS232 interface and a straight-
through RS232 cable (pins 1-8 and 20). Terminal parameters are set
correctly, however I cannot receive anything on my screen. What is sent
seems to make it to the TNC since my my PTT light turns on.

Another computer with a real RS232 output works just fine. Heathkit says
they tested the TNC with a 64 using the Commodore 1012A RS232 adapter.
So, could it be that the MSD is not quite the same as the Commodore
adapter? Is anyone using a Commodore with an MSD RS232 interface?

Please advise. I can be contacted through the W0RLI PBBS in Westford, MA.

73 de WA1OMM  Paul