K2 murdered

[Hans Bonnesen]

During heavy lightning in the evening  I switched all antennas to ground.
Next morning I forgot and started to transmit into a grounded antenna (sic)
It appears the transmitter is now gone dead. Admission: I murdered it myself.
Where do I start to look. - When "transmitting" into a dummy load the RF/ALC indicator
shows that all is normal.
I's not. Unfortunately.

Remorsefully yours

OZ5RB, Hans


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[Don Wilhelm-4]

Hans,

It is strange that you have an indication of power output when
transmitting into a dummy load, but not into an antenna.
Is this a QRP K2 or do you have the KPA100 installed?  My responses will
be different depending on the answer to that question.
Do you have the KAT2?  Or the KAT100.

A few more measurements may be required.
Have you put an in-line wattmeter between the K2 and the dummy load?  Do
you get the same power into the antenna as ino the dummy load.
On the assumption that the lightning may have damaged something in your
antenna system, I would suggest using an antenna analyzer to measure the
antennas at the desired frequency of operation.  It might not be a K2
problem at all.

73,
Don W3FPR

On 7/29/2013 5:01 AM, Hans Elfelt Bonnesen wrote:

> During heavy lightning in the evening  I switched all antennas to ground.
> Next morning I forgot and started to transmit into a grounded antenna (sic)
> It appears the transmitter is now gone dead. Admission: I murdered it myself.
> Where do I start to look. - When "transmitting" into a dummy load the RF/ALC indicator
> shows that all is normal.
> I's not. Unfortunately.
>
> Remorsefully yours
>
> OZ5RB, Hans
>

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[Geoffrey Mackenzie-Kennedy-3]

Hello Hans,

Sorry to hear about your problem.

When transmitting inot a 50 ohm dummy load, I would suggest that you first
measure the RF power actually reaching the dummy load in case the RF/ALC
indicator is misbehaving.  If you do not have a RF Power Meter (Inline
type), then a diode detector plus a DMM would be suitable.  The K2 kit
includes the parts for a diode probe/detector.  The probe should be
connected at the dummy load via a coaxial T connector.

The diode probe and DMM will give you the RMS voltage appearing across the
dummy load.

73,

Geoff
LX2AO


On July 29, 2013 at 11:01 AM, Hans Elfelt Bonnesen wrote:

> During heavy lightning in the evening  I switched all antennas to ground.
> Next morning I forgot and started to transmit into a grounded antenna
> (sic)
> It appears the transmitter is now gone dead. Admission: I murdered it
> myself.
> Where do I start to look. - When "transmitting" into a dummy load the
> RF/ALC indicator
> shows that all is normal.
> I's not. Unfortunately.
>
> Remorsefully yours
>
> OZ5RB, Hans

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