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  1. DaveInDenver

    Gaia vs Onx

    Do you mean OpenStreetMaps? On Android I like OruxMaps since it can use OSM maps in Mapsforge format. https://oruxmaps.com/cs/en/ https://www.openandromaps.org/en It also has a PDF rendering engine and can display georeferenced PDFs (GeoPDF). So you have the option to show USFS MVUMs, BLM...
  2. DaveInDenver

    MXT115

    That depends on what you expect of it. The power and features are sufficient for basic trail use but not if you want a full feature GMRS radio. But you already know all that.
  3. DaveInDenver

    "6mm" DC Output ports on many portable power stations

    I do agree with you that the 6mm coaxial barrel sounds like either proprietary or at least a very odd standard. Normally barrel OD are 5.5mm or 6.3mm. However you ave to look at datasheets for a 6mm OD panel jacks. You can't have an plug with an actual OD of 6mm fit into a jack of the same...
  4. DaveInDenver

    Update Me on D-STAR

    I've said for a long time I'd be first in line for a TM-D710 that could do DMR.
  5. DaveInDenver

    GPS Tracker for Theft

    Just to clarify, AirTags work as long there's any enabled iPhone around and do not have to be near yours necessarily. The way these devices (not just Apple, but stuff from Ring, Samsung, Google, etc.) work to form a global mesh is a serious privacy issue...
  6. DaveInDenver

    Handmade Leather Boots for Overlanding / Hiking / Etc.?

    I've read the same thing is occurring with clothing sizes. I'm about 10 lbs heavier than my high school graduation weight and have gone from XL (I have long arms) to L to now almost always medium as first pick. But we guys are lucky that we can buy by the number. A 32x34 trouser in 1989 is...
  7. DaveInDenver

    How are you guys handling yourselves in strange circumstances off the grid?

    Perhaps, although the majority are non-violent drug users that can't bail out or hit the ladder-climbing D.A. jackpot of 3rd strike or plea deal. Violent crime has gone down, which I'm sure is simply coincident with the rising adoption of CCW in almost every state.
  8. DaveInDenver

    How are you guys handling yourselves in strange circumstances off the grid?

    Ha, they'll succeed in removing all the invasive tamarisk from the river banks and the levels still won't come back, eh?
  9. DaveInDenver

    How are you guys handling yourselves in strange circumstances off the grid?

    A mostly no with a caveat yes. The movies and TV are not exactly representative of the U.S. but we do have a high propensity to lock people in prison. We suck at math but we are #1 for incarceration due to draconian drug laws and mandatory sentencing, amongst other factors. The worst can...
  10. DaveInDenver

    Handmade Leather Boots for Overlanding / Hiking / Etc.?

    I've noticed that odd over-sizing thing. I wonder if maybe modern buyers expect comfort immediately, either not willing or don't know about breaking in a set of boots?
  11. DaveInDenver

    Compass

    Indeed, we must obey the laws of physics in this forum! There's many less obvious sources for error beyond just the steel body. Any cable carrying current will produce a magnetic field. The steel clip on a flashlight. The motor in your ABS pump. Heck, any powered electronics or even the...
  12. DaveInDenver

    GPS Tracker for Theft

    The SPOT Trace is designed exactly for this, although it's a satellite tracker with an annual subscription. On the cheap(er), don't people use those Apple tags for this?
  13. DaveInDenver

    iPhone, PocketPacket, Baofeng UV5R and APRS

    Do you happen to use the Mobilinkd to both send and receive packets? I ask because Yaesu radios used (my FT-8800 and old FTM-350 anyway) to have an odd configuration in that they can dual receive but can't intelligently transmit from an external TNC. So when you hook a TNC to their data port...
  14. DaveInDenver

    APRS??

    My APRSdroid phone has no SIM card. I use prebuilt OSM maps in Mapsforge format so it doesn't talk to Google at all. I don't even allow it on my home WLAN network. I directly load apps via APK files and map data over USB. I try to get it about as close to a dumb terminal as a phone can be...
  15. DaveInDenver

    Update Me on D-STAR

    There's the ever present rumor Kenwood is exiting the amateur radio market. There's no definite reason to believe it since they still advertise monthly in QRZ so it's possible they're just focused on fulfilling other contracts with the supplies they can actually get. Yaesu is in the ham market...
  16. DaveInDenver

    APRS??

    For iOS the only option is a Mobilinkd TNC3 (the TNC2 does not work) and the aprs.fi app. For offline use (e.g. backcountry) you'd have to make sure to cache Apple Maps but the app itself works fine without data. So positions would still be sent and received over RF, messages and weather could...
  17. DaveInDenver

    Update Me on D-STAR

    There's 29 D-STAR repeaters in Utah out of 352 total listed in the repeaterbook database. Compare that to Yaesu Fusion (19) and DMR (12). So there's some infrastructure you could use. https://repeaterbook.com/ I have a DMR radio personally since that's more prevalent in Colorado (51 of 404...
  18. DaveInDenver

    Antenna separation question.

    That's interesting in discussion and presentation of formulas but it's kind of not useful here. Their conclusions are based on the same band aggressor radio having no affect on the victim so they find distances in kilometers. It seems geared to how to identify suitable repeater sites for...
  19. DaveInDenver

    Theory of Battery Chargers

    All valid generalized concerns. There's nothing wrong with sealed batteries, they're used all the time in hi-rel situations where not being open to atmosphere is useful. And lead-acid is still viable where cost, reduced need for temperature controls, domestic-sourcing are significant benefits...
  20. DaveInDenver

    Theory of Battery Chargers

    I mean you essentially integrate current over time, so kind of A-hr. Strictly it's incompatible units per se, but used to make a guess about state of charge by using rated capacity and acceptance rate. So a 100 A-hr capacity battery that's been accepting a stable 1A (arbitrary 1% or 0.01C) @...
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