[Elecraft] Long RS232 Runs - RS422

[Clay Autery]

This one is rated to 1250 meters... with CAT-3 cable (TELCO).  Use
better cable and proper terminations and you MIGHT be able to extend
that a bit.  Add an inline amp/repeater, and the distance could be
extended to... well... a long way...

How far you need to go?

73,

______________________
Clay Autery

On 1/21/2016 12:44 PM, Jim Brown wrote:
> On Thu,1/21/2016 10:32 AM, Michael Walker wrote:
>> I wanted to mention that for those that want long RS232 runs for devices
>> (Steppir, Rotator, Elecraft Amp),
>
> It helps to define "long." Distance for RS232 was originally defined
> in feet. Many years ago, it was redefined in terms of capacitance
> between conductors. Using cables as common as CAT5, lengths of 200 ft
> or more are no problem. Simply use one pair per signalling circuit.
>
> 73, Jim K9YC