I have a 15 pin adapter with pin 10 removed as a ptt interrupter. With it
inserted in line with my acc cable on the rear of the K3 to the KPA, the
amp still keys. I would like the KPA to not key when I am using other amps
for VHF. I can only do this by removing the acc cable from the rear of the
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
Not if you can curb your excitement long enough for the antenna to
finish tuning. IMHO the time is well spent listening before tromping the
footswitch anyway. I've never damaged my SteppIR that way.
73, Mike NF4L
On 5/9/12 11:59 PM, WE5ST wrote:
Do I need to use the Key Line Interrupter with
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
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