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CVARS K7PG
The Chehalis Valley
Amateur Radio Society
A 501(c)(3) Non-profit
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UPDATED 09/13/2026
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UPDATED 08/21/2026
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08/15/2026
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UPDATED 09/06/2026
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UPDATED 08/01/2026
Electronics Workshop - August 26, 2021
Time & Location:
7:00 PM
Fire District #6 Training Room, 2123 Jackson Highway, Chehalis, WA
Topics:
J-Pole Antenna
MOSFET Introduction
Yarn Bobbins for storing wire
Potpourri
Notes:
J-Pole Antenna:
Slim Jim and J Pole Calculator:
https://m0ukd.com/calculators/slim-jim-and-j-pole-calculator/
Wikipedia:
https://en.wikipedia.org/wiki/J-pole_antenna
MOSFET Introduction:
Wikipedia:
https://en.wikipedia.org/wiki/MOSFET
Yarn Bobbins for storing wire:
Knitpicks:
https://www.knitpicks.com/yarn-bobbins/g/YarnBobbins
Amazon:
https://www.amazon.com/Bobbins-Pieces-Colors-Crochet-Organizer/dp/B0GRVC5RLX/
Potpourri:
Raspberry Pi
Python Programming
Antenna Masts
Broadband Butterfly Terminated Dipole:
House Roof Version:
https://www.facebook.com/groups/27820848110/posts/10162118303573111/
https://unicomradio.com/diy-roof-hf-antenna/
Capacitor Equivalent Series Resistance (ESR):
Wikipedia:
https://en.wikipedia.org/wiki/Equivalent_series_resistance
Avnet:
https://my.avnet.com/abacus/resources/article/understanding-esr-in-electrolytic-capacitors/
Geekcreit LCR-T4 12864:
https://evalm.com/products/7591141
Updated 08/09/2026. Email
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