Re: USR Pilot

Christopher Paradies (
Fri, 28 Mar 1997 10:10:22 +0100

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Date: Fri, 28 Mar 1997 10:09:33 +0100
From: Christopher Paradies <>
Subject: Re: USR Pilot

Hi Kent,

KENT wrote:
>Mind explaining what a "null modem adapter" is? And with these
>modems. They are battery powered, so you don't need to plug it in if your
>not by an outlet?
The OGO's serial port with serial cable is designed to communicate with the
DB-9 connector on the PC. A null modem adapter switches the receive (RX)
and transmit (TX) lines so that the OGO can send directly to a modem. There
have been other postings on this site that so the pin-outs so I won't go
into that here.

My WorldPort 2496 is a pocket 2400 baud modem (9600 fax) that uses a 9V
battery. The battery doesn't last very long, so I normally use the AC
adapter when at home or in a hotel, but a 9V battery is plenty for sending
and receiving mail when on the road for a few days.

Previous thread:
>On Thu, 20 Mar 1997, Christopher Paradies wrote:
>> Internet sites listing used pocket modems:
>> >
>> 24/96 Modem $15
>> >
>> various 9600 & 2400 baud external modems < $35
>> There were lots more using Alta Vista and "used modems" for the search.
>> All you then need is a null modem adapter and possibly a gender changer,
>> OgCOMM or CIM for GEOS and voila you're communicating using your OGO.
>> >On Thu, 20 Mar 1997, Christopher Paradies wrote:
>> >
>> >> No. I am not talking about a pilot modem. I mean the old USR
>>WorldPort 2496
>> >> (2400 modem/9600 fax).

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Christopher Paradies, Ph.D.
address: EPFL, LMPH, DMX-G 333
CH-1015 Lausanne, Switzerland