[Elecraft] Attenuator audio "pop" in K1

[email protected] [email protected]
Wed Apr 10 18:43:01 2002


I have five extra minature 10 uH RF chokes if you are interested
in this easy and quick modification to the Attenuator audio pop.
SASE and $1 to C. Brown, 12165 Miller Lane, Grand Bay, AL 36541.

From: Wayne Burdick <[email protected]>
To: Mike <[email protected]>

Attenuator on/off audio "pop" elimination:

Install miniature 10 or 15 uH RF choke between pins 3 and 8 of relay K1
on the bottom of the RF board. One part that fits between the pins is
Mouser part nr. 434-21-100 Fastron Epoxy Coated chokes,  10uH,
color code brown black black.
The location of Relay K1 is near the middle of the board--
turn the board over on the top side to see where Relay K1 is located. 
The
bottom cover is the only cover required to be removed.
Pin 3 is the middle pin or number 3 counting from the top left,
and pin 8 is the pin across.  The 10 uF choke will fit across the
pins with short leads.

This mod will reduce or eliminate the audio "pop". 

Ken Brown-N4SO
Mobile, AL  EM50tk
Elecraft K-1
4 ele. monoband yagi
[email protected]


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