[aprssig] re-purposing MFG 1278B?
kris at catonic.us
Tue Dec 10 13:11:14 EST 2019
On Mon, 9 Dec 2019, Ron VE8RT wrote:
> there is a MFJ 1278B sitting on a shelf here. From reading the
> thread on YAAC I've learned that TAPR offer (or offered at one time)
> replacement EPROMS. My questions are: is the MFJ 1278B worth an EPROM
> upgrade (what would it be good at)? And if so, where could I buy
> replacement EPROMS and documentation? I've glanced at the TAPR
> website and don't know exactly what I'd be looking for.
> Thanks, Ron VE8RT
The 1278 tends to default to 2400,E,7,1 IIRC. Annoying enough that a
brain swap is an improvement. If you have a need for something that does
the job in hardware, it's not a bad idea. OTOH, there are TNCs out there
which have software DCD, and a software DCD should be used with a TNC2
DCD is an active low input on the TNC, and by pulling DCD to ground,
it's possible to allow a TNC to share a radio.
Kris Kirby, KE4AHR
Disinformation Architect, Systems Mangler, & Network Mismanager
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