[Elecraft] KPA100 rev D

[David Cutter]

In the marine set I went to sea with, 2 x 10k  25W carbon resistors in 
parallel were fitted as an antenna bleed.  This was on the MF/HF set: all 
valves in those days.  Antenna was end fed inverted L and the tx was about 
150W.

David
G3UNA

----- Original Message ----- 
From: "Robert Johansen" <wb2srf at juno.com>
To: <elecraft at mailman.qth.net>
Sent: Saturday, November 11, 2006 4:42 PM
Subject: [Elecraft] KPA100 rev D


> Hi Wayne,
>
> There a reason for concern for eliminating the choke in the antenna
> circuit.  I noticed that there is no DC path to ground to eliminate the
> chance of static potenital build up on an antenna from discharging a high
> voltage into the rig. This may be the reason why some builders have
> experienced blown detection diodes in some ATU's etc.
>
> I think that is a good practice to install a 47K 1/2W carbon resistor
> across the antenna terminals to act as a bleeder resistor when there is a
> capacitive coupled output.
>
> 73,
> Bob Johansen WB2SRF
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