[Elecraft] Long RS232 Runs - RS422

[Michael Walker]

All

I wanted to mention that for those that want long RS232 runs for devices
(Steppir, Rotator, Elecraft Amp),

I have been using these commercially for some time with great success.
They are made in the US and are pretty reasonably priced at about $35
each.  Of course, you need a pair of them.

Mike va3mw


http://www.rs485.com/prs422s.html

The RS422S is a fast Async bi-directional RS232 <=> RS422 interface
converter that will operate at data rates up to 115.2Kbps. The unit has
jumpers termination, RS232 DTE/DCE selection and, TTL/CMOS operation. The
unit has two RJ11/12 connectors an a pin header for power, common TTL/CMOS
TX data and RX data.

The RS422S is designed for office and/or indoor applications
(non-isolated). A pair of units and a 6-conductor reversing "telephone
style" cable can be used to form an RS232 "extension cord" for extended
operation beyond the RS232 specification.