[Elecraft] Key Line Interrupter w/SteppIR

[Mike K2MK]

Hi Jack,

Absolutely. If you transmit at 500 watts while the SDA-100 is tuning you can
damage your DB-18 EHU. The interruptor doesn't provide the actual
protection. It just forces you to use a separate key out cable between the
K3 and KPA500. This is the cable that you would then route through a SteppIR
control device which could be either the $82 Tuning Relay option for the
SDA-100 or the $78 N8LP SteppIR Tuning Relay external device. You can get
very specific advice at the SteppIR Yahoo group.

http://www.prestosell.com/cgi-bin/order.pl?ref=Fluidmotion&fm=2
http://www.telepostinc.com/STR.html
http://groups.yahoo.com/group/SteppIR/

73,
Mike K2MK



WE5ST wrote
> 
> Do I need to use the Key Line Interrupter with this setup? Seems that
> would be the case but I don't understand how the separate key line then
> protects the SteppIR for power during tuning operations.
> 
> I have a SteppIR, DB-18 3 element  using the SDA-100 controller, adding
> the KPA-500 to my K-3 station.
> 
> Thanks!
> 
> Jack - WE5ST
> 


--
View this message in context: http://elecraft.365791.n2.nabble.com/Key-Line-Interrupter-w-SteppIR-tp7545371p7546331.html
Sent from the Elecraft mailing list archive at Nabble.com.