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  • There was no LED activity at all, even though I could hear packet audio. The power setup is a smart charger feeding an SLA battery, and as far as I know there have been no outages at the site, so the power should be just fine. The antenna is about 20' above the unit, outside, so I seriously doubt that it's an RFI problem... Other thoughts? chris
    Chris Kantarjiev Oct 28, 2009
  • I've got a model C, running the latest model C release. In the past month or so, it has locked up hard at least twice, requiring a power cycle. This is most inconvenient for a semi-remote installation. Has anyone else seen this? Is there a fix? Thanks! 73 de chris K6DBG
    Chris Kantarjiev Oct 25, 2009
  • > if your looking to power a Nuvi from the OT2 it doesn't need a constant 4 > 00mA to operate. Yeah, I know. But when it does ... I'm asking here because it's the hub of Nuvi activity, but I'm currently looking to hook this to my D710. I am powering a GPS18 by stealing from the 100mA source that's available at the microphone connector - but I don't dare hook the Nuvi to that...
    Chris Kantarjiev Sep 2, 2009
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  • Thanks for all the responses. I specifically said "buck converter" because I've used 7805s and know how much heat they put out. I guess I was hoping that someone would point me at the details of one of the cigar lighter adapters, rather than a product that I can buy and cannibalize... I know that there was a little company doing these and potting them in epoxy. Boost converters...
    Chris Kantarjiev Sep 2, 2009
  • I'm interested in packing a 5V buck converter into a DE-9 shell, to take 12V in and provide power to the attached GPS - typically 60-80mA, but it would be nice to handle the Nuvi's load of 400mA. Can anyone suggest a simple design or readily available unit? Thanks! 73 de chris K6DBG
    Chris Kantarjiev Sep 1, 2009
  • One thing I'd suggest before you make any decisions about peripheral digis and reach: do some real-life tests. In one of the areas that I regularly try to do APRS work, I can *hear* lots of signals from 60-75 miles south, but I can't *decode* any of them. That tells me that the digi down there (I'm not going to name names) is running more power than is useful, because all he's...
    Chris Kantarjiev Aug 20, 2009
  • > That was my very point a few weeks ago when I talked about the need > for a pre-emphasis filter on the OT+ and T2 for those folk who use > the data port vs the mic port. That is *still* needed. So ... is there an easy-to-build filter that one could add on to test? 73 de chris K6DBG
    Chris Kantarjiev Jul 11, 2009
  • ...s easy to bring the D7 along. I wanted the Nuvi to fit into this regime. The wiring is described here: http://www.dimebank.com/cak/k6dbg/k6dbg.html#pfranc (Note that I standardized on pin 8 for +5V, long ago.) I wanted to do the same with the Nuvi/GTRANS. I...
    Chris Kantarjiev Jun 15, 2009
  • What's the latest proto C firmware? I see something listed from Jan 2008 ...
    Chris Kantarjiev Feb 8, 2009
  • Yes, the uTNT should work in KISS mode (say KISS ON). That's about *all* I find it good for, actually. 73 de chris K6DBG
    Chris Kantarjiev Jan 15, 2009