[OZAPRS] Glider tracking

[Andrew Rich]

Either way, they end needing to pass through a MAX232 chip

I spose I could get away with a transistor or bit bash in the PIC, but I
am
more interested in progressing with code mods at the moment.



-----Original Message-----
From: ozaprs-bounces at aprs.net.au [mailto:ozaprs-bounces at aprs.net.au]On
Behalf Of Dave Horsfall
Sent: Thursday, 9 August 2007 10:41 PM
To: VK / ZL APRS Users
Subject: Re: [OZAPRS] Glider tracking


On Thu, 9 Aug 2007, Andrew Rich wrote:

> I note that the GPS15H does -5 to +5 on the data port unlike my GPS 18
> which does 0 to +5 volts swing

This is known as pseudo-RS232; are the levels inverted?

-- Dave
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