[Elecraft] Cable length for KPA/KAT100 remote; importance of KPA100 upgrade

[Jim Brown]

On 3/23/2012 3:24 PM, Don Wilhelm wrote:
> I  recall that 6 feet was
> considered an OK length because it had been tested - longer lengths had
> not been tested.
> Of course, this applies to the K2.  The K3 may or may not be different.

Thanks Don.  At the very least, if this is a critical issue it ought to 
be tested and the results noted.  There's also the issue of cable 
capacitance, which can be a big deal for high speed lines that are not 
impedance-matched (like RS232).  CAT5 has a big advantage there too -- 
it's pretty low capacitance as cables go. Perhaps Jack can tell us if 
that circuit is impedance matched (that is, treated as a transmission 
line).

73, Jim K9YC