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[aprssig] PCSAT-3 opportunity?

'Scott Miller' scott at opentrac.org
Tue Jun 26 16:40:56 UTC 2007


If you're talking about the one that fit in the original OpenTracker case
(with a hole in the board) then you're right, only a few of those were made,
though I've got a big stack of unused boards.  Trouble with those was that a
routing error in the oscillator circuit made them really flaky.  Those SMT
crystals are hard to mount properly anyway, and with the board error only
about 50% of the ones I built actually worked.  The T2-135 is mostly the
same circuit, but with a better layout, and has never had that problem.

The T2-135 would probably be usable itself, but the connectors aren't really
ideal.  If there's no rush, I can spin a new board rev in a couple of weeks.
I can get prototypes faster of course, but the cost climbs fast as lead
times decrease.

As I mentioned in the last email, I'm already working on a board that mates
with a commercial radio board, so it'll have all of the signals needed on a
0.1" pin header.  Might not be the right levels for another radio, though.
Here's a picture of the radio in its housing, with RF board and TNC
installed:  http://n1vg.net/opentracker/images/dtx-plus.jpg

Scott
N1VG

> -----Original Message-----
> From: aprssig-bounces at lists.tapr.org 
> [mailto:aprssig-bounces at lists.tapr.org] On Behalf Of Curt, WE7U
> Sent: Tuesday, June 26, 2007 8:51 AM
> To: TAPR APRS Mailing List
> Subject: Re: [aprssig] PCSAT-3 opportunity?
> 
> On Tue, 26 Jun 2007, Jason Winningham wrote:
> 
> > Tracker2.  digipeater, remotely controllable/configurable.
> 
> I have one such in my hands, but I don't think very many of them
> were made.  Surface/mount Tracker2.  Tiny tiny tiny.  Maybe Scott
> has another one floating around, but I think there was a minor
> problem with the clock circuit on this board or with one of the
> components on the S/M version.
> 
> I don't know if he's planning to create any more of these right now.
> The T2-135 board may also qualify and is S/M too I think, but is
> probably somewhat bigger.  I know he's produced several of these.
> 
> It'd definitely be worth asking Scott.
> 
> --
> Curt, WE7U.   APRS Client Comparisons: http://www.eskimo.com/~archer
> "Lotto:    A tax on people who are bad at math." -- unknown
> "Windows:  Microsoft's tax on computer illiterates." -- WE7U
> "The world DOES revolve around me:  I picked the coordinate system!"
> 
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