[Elecraft] KAT500 serial cable

[Don Wilhelm]

Jean,

I mis-spoke.  I do not have the schematic for the KAT500. but the 
circuit for the "RS-232" interface used in the XG3 has become sort of 
the standard at Elecraft as far as I know.  I initially said it went to 
+5 volts, but after checking I see it can go to +9 volts. If your 
Ardrino TTL compatible sink cannot accept +9 volts without damage, you 
should use the RS-232 connection.  It will work fine with relatively 
short cables (but not the very long cables supported by real RS-232 
interfaces).

73,
Don W3FPR

On 1/19/2014 6:14 PM, F4GXG wrote:
> OK,
> In fact I planned to use  a MAX232 because I though that it was necessary
> for the kat500.
> At the end it seems that the kat500 is TTL compatible,   so it should be
> easier to connect with an Arduino.
> If I am right, a direct connection should be possible, without MAX232.
> Anyone to confirm?
> 73 Jean
> 73
>
>
>
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