[OZAPRS] RS232 sniffer

Colin Matten cmatten at nortel.com
Mon Feb 18 14:02:46 EST 2008

Not sure how much you want to spend. 

I picked up an old HP4592A on Ebay of $99AUD a year or so ago. The
breakout box side of it should suit your requirements, these units will
also display the RS232 data. 

There is one on eBay for $149USD "Buy Now"




-----Original Message-----
From: ozaprs-bounces at aprs.net.au [mailto:ozaprs-bounces at aprs.net.au] On
Behalf Of Andrew Rich
Sent: Saturday, 16 February 2008 10:19 AM
To: Aprssig
Cc: ozaprs
Subject: [OZAPRS] RS232 sniffer


I am thinking of putting together an RS232 sniffer for the shack.

Pretty simple, just some LED's for activity.

What would be the best way ?

Can compartors be used to show activity ? I am looking for lots of them
, hence lots of pins to watch.

We have break out boxes, but they never really seem to have all the
connections we want, for a CRO etc

Ideas ?

A circuit to switch on with a +1.2 or greater volts

Not sure what to do about the -ve swing. or even bother - activity is
the aim.

MAX232 only has 1/2 in it what I want to do

Andrew Rich VK4TEC
vk4tec at people.net.au

Ozaprs mailing list
Ozaprs at aprs.net.au
Ozaprs mailing list
Ozaprs at aprs.net.au

More information about the Ozaprs mailing list