It really *shouldn't* be that sensitive to stray RF, not in its case anyway. I would check the routing of your radio cables, and maybe add a ferrite clamp. There are ferrite chips on the board for all of the radio and serial connections, too.
Ordinarily I can't get one to lock up with 50w of RF right next to it. But the new board revision's got extra protection - multilayer transient voltage suppressors that are mostly there to bleed off ESD and save it from momentary wiring mistakes, but they also add some capacitive filtering. Scott kb9lgs wrote: > > > I am using the Muvi 350 and OT2m tied to a MFJ data radio. It works very > well. One issue when I first started. The OT2m seems to be a bit > sensitive to stray rf, and I had the two boxes on top of each other in > the back of my jeep under the rear seat. The OT2m kept locking up with > the transmit line on. I fixed this by putting the OT2m on one side and > the radio on the other side and used the Driveshaft tunnel as a bit of > an RF shield. > > > this is for people that already use this setup. i'm thinking of > changing my setup. right now i have a Rino 130 hooked to TT4. not saying > anything bad about TT4 but i have a Nuvi 350 that is new and i'm so > ready to upgrade and use that so i can see other aprs stations when > driving the semi truck i drive. my main reason for emailing the group is > to see what problems you all have had with the Nuvi 350 and OT2m setup > as a mobile setup? how many of you do messageing on them? i stop a lot > in the middle of nowhere where there is no cell phone service but there > is great aprs service. please let me know about all the good and bad > that you all have had about this compian setup. i have a GTRANS Garmin > to NMEA Translator Cable (D-Sub Style) on order but really thinking > about seeing if i can change my order fo the OT2m type of setup. > >
