From: Lars Olsson (email@example.com)
Hello Steven and other QRP hams.
Yes, I can confirm that it works very fine.
I have used paper cups from Coca Cola and with a scissors it is very
easy to adjust the size to make the cup resonant to your favourit CW
beat tone. Try it! It works almost like a CW filter.
73 de Lars
Unhappy owner of SG-2020
Proud owner of Mercury paddle # 287 and
CMOS Super Keyer III.
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