Re: Icom OPC-1529R pinout
Paul Butzi (W7PFB)
I am one of thoseold guys who suffered through the prevalence of RS-232C and I can tell you that the frequency of problems being related to a need for a null modem in between devices is very high.toggle quoted messageShow quoted text
It may be that your cable is wired correctly but needs tx and rx swapped. Or that one device or the other is expecting/insisting on one of the RTS/CTS/DCR/DTR signals and not seeing it.
Or baud rate mismatch. Or just some confusion about bits per character, parity presence/odd/evenness.
It’s times like this I wish I had a fancy schmancy oscope that did serial data decode, so that I could lend it to you to get you unstuck.
I do have a dual trace oscope that does not do serial decode, and I would be happy to loan it to you so he can at least examine the signals at the 2.5mm plug end and see what’s on what part of the connector.
73, Don’t forget to smile and have fun!
On Nov 20, 2020, at 8:46 AM, Ryan - KJ7GIE <firstname.lastname@example.org> wrote: