[aprssig] Argent open tracker

Andrew rich vk4tec at tech-software.net
Thu Jul 14 11:59:48 EDT 2016

Thats my point - they want to act at RS232 but they can only go TTL levels.

RS232 height would be > 7 volts
RS323 height would be < 7 volts


RS232F is VCC 
RS232F is 0 Volts 

Mr Andrew Rich
vk4tec at tech-software.net
vk4tec at internode.on.net
0419 738 223
-----Original Message-----
From: aprssig [mailto:aprssig-bounces at tapr.org] On Behalf Of Jason KG4WSV
via aprssig
Sent: Thursday, 14 July 2016 10:51 PM
To: TAPR APRS Mailing List
Subject: Re: [aprssig] Argent open tracker

> On Jul 14, 2016, at 4:15 AM, Andrew Rich via aprssig <aprssig at tapr.org>
> GPS is rs232 sense not TTL 

IIRC the garmin GPS18 manual claims that is the RS232F standard. 

The 18 has worked fine on the assortment of opentrackers and USB/rs232
adapters as well as the d700 I've used them on. 


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