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[aprssig] [MicroTrak] Really Big Micro-Trak

manuel holland wa5vxi at yahoo.com
Fri Mar 13 00:25:44 UTC 2009


Out in the boonies (some of the areas in which I routinely travel) 50 watts are frequently not enough to make it to a digi.  High power is not for everyone nor all the time, but is sometimes useful.


--- On Thu, 3/12/09, Stephen H. Smith <wa8lmf2 at aol.com> wrote:

> From: Stephen H. Smith <wa8lmf2 at aol.com>
> Subject: [aprssig] [MicroTrak] Really Big Micro-Trak
> To: "TAPR APRS Mailing List" <aprssig at tapr.org>
> Date: Thursday, March 12, 2009, 5:43 PM
> Repost from MicroTrack Mailing List:
> 
> 
> Well, I just sent out my prototype board for production to
> try a 30 Watt, single channel Micro-Trak transmitter. The
> board is 4.7 X 2.4 inches and has a BNC RF output. With a 17
> volt supply, it could potentially produce 45 Watts of output
> power! 
> 
> Today I realized that the next larger sized amplifier
> module is in the same size case, and it might even be
> possible to drop in the 60 Watt module ( 75 Watts at 17
> VDC!) I can visualize APRS purists filling their molotov
> cockatails even as we speak....
> 
> I have taken crazy-extravagant precautions to prevent the
> RF from swamping the PIC, but there is ony one way to know
> for sure if its going to work. I should have the boards back
> in a couple of days and will let you knwo how it works, and
> put up photos (unless if fails massively, in which case,
> forget I even brought it up!)
> 
> Allen
> VHS
> 
> 
> 
> 
> 
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