[Elecraft] [KAT500] Cabling Diagram

[Roy Morris]

I have connected the cables as shown on page 6 of the KAT500 Automatic 
Antenna Tuner Owner's Manual, revision B3, November 20, 2012.  I am 
connecting the K3, KPA500 and KAT500 using the DB15 interface cables and the 
two RCA (yellow end) cables for the separate key line.  This diagram shows 
the key line interrupter inserted between the DB15 cable and the K3 ACC 
socket.  I have not inserted the key line interrupter, and the system seems 
to work fine.  However, I DO have to change the KPA500 from OPERATE to 
STANDBY when changing frequency because leaving it in the OPERATE position 
may cause the amp to FAULT when I hold the XMIT button on the K3.  I believe 
the tuner is trying to search with high power.  I wonder if inserting my key 
line interrupter would prevent this.  All frequencies had been previously 
memorized by the KAT500.  Thanks.  Roy Morris  W4WFB