Homebrew DMR Repeater / Hi Power Hotspot

I am not sure of who here is aware of the RB_STM32_DVM by Scott Zimmerman

Its truly an amazing device for a MMDVM, now there is version 3

Now the seller offers cables for various radios if needed


models vary depending upon your purpose

by Scott

Vehicle Recovery

Since we covered this topic during a net

I thought it would be neat to see what others do or have planned for such

I have the smittybilt 12K winch, 2 30ft 30k lb straps, chain, hi-lift, snatch block, shackles etc just in case


DMR AMP‑U25D Amplifier

Seems neat and cheap enough, but I dont like all the cables involved



online military field manuals

online military field manuals




these will help us all as topics progress

Dehydrate food in your oven.

We were discussing drying our own foods on the talk group the other day.  Found this in my old Boy Scout Field Book…. of all places.   Would likely be much more energy efficient to use an actual food dryer but it does talk about some steps to avoid spoilage that I hadn’t considered….

Dehydrate Your Own Food

Commercial processors market hundreds of dehydrated and freeze-dried foods, though you can dehydrate your own meat, fruits, and vegetables in an oven at home.  Here’s how.

To make beef jerky, slice a pound of lean beef into strips about 1/4-inch wide, cutting with the grain.  Season strips with a little salt and pepper, then drape them over the bars of the rack in your oven.  Place a cookie sheet underneath to catch any drippings, and leave the oven door open just a crack to let moisture escape.

Turn the oven’s temperature control to its lowest setting-around 120 deg F and let the meat dry for about 8-hours until it is shriveled, chewy, and delicious.  Seal the jerky in plastic bags and you’ve got a great addition to your back country larder.

You can dehydrate vegetables and fruit in much the same way.  Begin with fresh, ripe produce. Wash it well, remove cores and stems, and slice it thinly. Next, break down natural enzymes that could speed deterioration by briefly steaming the fruits and vegetables in a colander or vegetable steamer placed in a large pot, containing 1/2 inch of water. Cover pot, put it on the burner, and bring the water to a boil. In a few minutes the produce should be limp and ready for oven drying.

To prevent slices of fruits and vegetables from falling through an oven rack, tightly stretch cheesecloth or a tea towel over the rack and secure it with safety pins. Spread the slices on the cloth.  Check after about 8 hours for the fruit to be dry but not brittle, pack them in plastic bags. During a trek you can eat them as they are, add them to dishes you are cooking, or soak them a few hours in water to restore their original sizes and shapes.

Canned Bread! Anyone else like this stuff?

This is something I have always carried with me.  Apparently not common out west here as everybody seems perplexed and makes faces when I punch a hole in it and rotate it on a rock by the fire to heat it up.  Most like it after I can get them to try it.  A bit heavy for backpacking and best with a little margarine….  But a great thing to have in the food box. Only a few stores carry it out here in Oregon/Washington and it’s usually found with the baked beans… I grab a can or two of those too.  Winco and Fred Meyer stores seem to always have it on the shelf.



Pi to Go!


Preliminary setup for the Pi to fit into an enclosure.

HotSpot Box for mobile ops

I use a rubbermaid container I found at a dollar store for $2

my usb battery pack is 30000mah, it has 2 usb ports and comfortably handles the shark rf, and tp-link all at once. Havent turned this on in about 9 months, still charged. Has built in light Ive never found a need for too.


Walmart sells these outdoor products water tight, airtight, lockable which would work well too


APRS Newbie

I have never played with APRS.  The new FT2D is capable so i’m playing with setting it up now.  I’m at work and can’t get a satellite link from here so I can’t get the radio to beacon.  We’ll see what happens on the trip home….  Interestingly, I learned about the findu and aprs.fi websites and checked for my callsign and it came up!  This was from when I was using the FT2D in cross-mode to DMR from home the other day.  I found that interesting.  So much to learn and understand. But cool stuff.



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It works! FT2D and Rugged Spot