Hi Paul,
Can you send me the contact info for your friend so we can help him? (Or have
him contact supp...@elecraft.com immediately.)
Using the KPA1500 utility to download and sending us your KPA1500 config file is
always required in cases like this and it will also help us quickly diagnose
what's up. (That file contains the full amp setup and fault log history.)
Hopefully, this may just be a cockpit error. (Overdrive activates the 3 dB input
attenuator.)
Also, NEVER drive the KPA1500 at 100W! That is well in excess of its fault level
and can damage the amp. Our normal max input drive level is about 61 W or so if
I recall correctly. Above that point the 1500 automatically lights the yellow
OVR light and switches on a -3 dB input attenuator. After continuous slight
drive for 10-20 secs at above this max drive level the amp will then hard fault
into standby. Never increase drive when the OVR light is on - that will only
increase the risk of damaging the amp.
OVR and the 3 dB attenuator will activate for overdrive, high reflected power,
high PA current etc. When it lights, that is a message to REDUCE DRIVE and
correct the problem. Once the drive is reduced, after several seconds the OVR
light and input attenuator will turn back off.
73,
Eric
/elecraft.com/
On 10/16/2018 7:35 PM, Paul Baldock wrote:
A friend of mine's KPA-1500 has just failed. It behaves like half the PA has
died, with max output power about 900W, and requiring excessive drive to get
that. He has calls in to service but no response yet. Has anybody experienced
such a failure?
Thanks
- Paul KW7Y
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