Michael,
Congratulations on finding the faulty diodes. The failed diodes
indicate that you may have suffered a static surge of some type -
disconnect those antennas when not in use.
You have also confirmed that the MAX1406 at U8 is damaged - take it out
and your KPA100 should work for you.
IL PROTECTED]
To: Michael Haygood <[EMAIL PROTECTED]>
CC: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA100 - Low Voltage output from High Voltage Bias
Supply Circuit
Date: Thu, 19 Jul 2007 18:26:59 -0400
Michael,
You said the 'magic words' - HI CUR, Hi REFL messages and la
Michael,
You said the 'magic words' - HI CUR, Hi REFL messages and lack of power
control (other than low and high power selection) *after* a lightning storm.
That is an indication that the lightning surge zapped diodes D16 and D17
in the KPA100 wattmeter - the result is that the base K2 micro
Michael Haygood wrote:
Hi,
I've been using my K2/100 for many months with great results. After a
recent storm containing lightning the next time I fired up the K2/100 I
received the "HI CURR" message and the "HI REFL" messages upon initial
transmit. This was unusual, so the next thing I did
Hi,
I've been using my K2/100 for many months with great results. After a
recent storm containing lightning the next time I fired up the K2/100 I
received the "HI CURR" message and the "HI REFL" messages upon initial
transmit. This was unusual, so the next thing I did was consult the
troubl
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