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[aprssig] Ultimeter 2000 support

Scott Miller scott at opentrac.org
Wed Apr 27 17:46:56 UTC 2005

It just occured to me that I've got a ton of MAX860 voltage inverters on
hand.  It'd still require an add-on board (or connector shell) but it should
be doable.  Needs three external caps.

Scott, N1VG

----- Original Message ----- 
From: "Jason Winningham" <jdw at eng.uah.edu>
To: "TAPR APRS Mailing List" <aprssig at lists.tapr.org>
Sent: Wednesday, April 27, 2005 10:32 AM
Subject: Re: [aprssig] Ultimeter 2000 support

> On Apr 27, 2005, at 11:33 AM, Scott Miller wrote:
> > Does anyone have a solution that's more compact than a MAX-232 chip?
> I can't remember which one is which, the 232 or the 233, but one needs
> about 4 or 5 capacitors, where the other just needs a few jumper wires.
> If you're trying to keep the pin-count/chip footprint down, I think
> there are some others in the Maxim line that have a smaller footprint,
> but I don't recall how many external components they need.
> -Jason
> kg4wsv
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