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A 'new' old interest

W5LZ

Crotchety Old Bastard
Apr 8, 2005
6,832
903
173
Oklahoma
Decided to get into something a little 'new' (at least for me), APRS. Being able to look at the computer and tell where I'm at seemed like a sort of 'neat' thing to be able to do, right? I'm finding out LOTS of things I didn't really know (or remember) and having LOTS of @#$ 'fun'!
Why the @#$$ doesn't someone make a list of things you really need to do all that with rather than having to dig through all that 'stuff' trying to figure this @#$% out? Maybe another list to show how all that @#$% goes together? (No, it really isn't that hard, I'm just that lazy.)
Found out that putting that APRS transmitter together and programming it at the computer can tell you things you never needed/wanted to know. My computer makes really, really nasty noises when the APRS thingy transmits next to it. That does tell me the thing is transmitting, so it ain't all bad, right? The other 'fun' part is figuring where to put the @#$ thing in the truck. The whole thing is smaller than an average sized brick, so shouldn't be that big'a deal.
To be able to 'sees' things on my computer rather than the internet I need a mapping program and then a program that combines those maps and the received signal to show it on the screen. Hmm, got one of them mapping programs around here somewhere. Found a sort of easy program to 'combine' all that stuff. Hot @#$! I'm roll'n now! Uh-oh, says the map program doesn't work, too old, wrong format. Okay, get a new one. Wait a minute, I need a receiver and antenna to get that signal? No sweat, scanner and sound card will do that. What the @#$$ did I do with that @#$ scanner? Got that ol'"J"-pole, that'll work. Oh sh@#! No feed line, no sweat, go buy some.
Wonder what else I'm forgetting? Oh well...
- 'Doc

[The thingy for the truck is no problem, neither is the receiving part for the computer. It's the learning curve, and being out-dated with what I think I know, sort of. Lots of fun even if I complain about it! (If I ain't complaining, there's something wrong. I like complaining!)]
 

Up-Date

Well, I'm much closer to 'done', sort of. Went with a 'Byonics' 'Micro-Trac' transmitter and GPS, saving my hand held GPS for some un-foreseen of future requirement (couldn't locate a schematic for the pin-out). Also didn't wanna tie-up another radio just for APRS.
The 'Micro-Trac' thingy has a max input voltage rating of 13 volts, and since the output of most alternators is slightly more than that, I also got a voltage regulator to use (9-26v input, 12v regulated vdc out at 4 amps). Figured it'd be good insurance and at $15, worth it.

I just love SMA connectors! The antenna connection uses an SMA, couldn't find one anywhere locally. Did some 'noodling' through my saved 'trash' and lookihere, I found a coax section with one on the end of it... and an NMO mount on the other. Hmm, if it's got an NMO on it, I might have that kind of antenna in this trash somewhere! Root, root, root, @#$! I found one, sort of bent but who cares, I can fix that. Now all I need is to find a box to stuff that 'Micro-Trac' and voltage thingy into. 'Rat-Shack' here I come! They got lots of 'empty' boxes, sort of like their employee's heads?
The 'other' end of this, tracking with the computer at home, NOT using the internet isn't that big'a deal, sort of. Found the programs to do that with. After some re-doing of things, it even works. Mercy! Yeah, but that @#$ laptop running '#$%^ing' Vista is a different story. I just love '#$%^ing' Vista! If I thought I could get away with it I'd dump it and go to 'XP', just too chicken. More 'Googling' to see how others are doing it. They are, so there's got'a be a way, right? Maybe?
Where do you find a 3/4" metal hole saw? Hmm, a 45 through the roof ought'a be about the right size, wouldn't it? Wadid I do with my ear muffs...
- 'Doc
 
Doc,

What exactly are you going to track yourself for...just 'cause?

Good luck finding a 3/4" metal hole saw. You'll have to just get a regular 3/4" drill bit. I pilot hole is your friend....
 
Mole',
Part of it is just 'cause. Another part is learning how to do it, sort of, and it does come in handy at times. The local EOC manager is a ham and so are most of the regular members. That means keeping track of storm spotters and other activities. (No, I'm not one of the spotters, don't like getting rained on much.)
Besides, sometimes I need something to tell me where I am/was cuz I forget, sort of.
- 'Doc

Hole saw, 3/4", made by AntennaSpecialists (who'da thunk it?), in my hot little hands. Got to give it back though, rats!
 
It works! I'll be @#$'ed, it really does. Couldn't stand it any more, and since the weather is almost perfect for antenna and radio work this morning (34 deg, cloudy), decided to put the @#$ thing in the truck. Still don't have it in it's 'final state', just stuck it in a cigar box and put it under the seat.
I am a GENIUS!! ... or this stuff really isn't that hard to do. Who cares, I ain't had this much fun since the pigs tried to eat my baby brother!
- 'Doc
 
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I'd like to hear some thoughts about 'how' to do this sort of stuff. One version is to use a second transceiver to do the APRS transmitting. That way you have a possible back-up radio in case the primary one quits. Another version is to use just a transmitter designed for APRS. No receive, usually cheaper, smaller, easier to 'hide', etc.

I did it the second version way. Figured that since you don't listen to the transmitted APRS signal anyway, why have a dedicated receiver. Also figured that if the primary radio quits because of some 'outside source' (lightning?) and since the APRS thingy uses an antenna too, it'd probably 'leave' with the primary radio, sort of. Not to mention that the APRS thingy is cheaper than a new radio (don't have much confidence in buying used stuff, sort of).

So... how would you do it, and why?
- 'Doc


(Answer with three pages or less. Answers will be graded.)
 

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