Teodor, 2E0GIY, is curious. "Why 450 Ohms?" He is wondering why it became such a commercial type when it is rarely a viable solution. Dave here to help explain.
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Edited by Callum Jakeman
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Tip jar (on my website): http://www.dcasler.com/tip-jar/ (provides a method to use your credit card via PayPal, Also describes Patreon)
To pose an Ask Dave question: http://www.dcasler.com/ask-dave/ or http://www.ke0og.net/ask-dave/
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Theme music is "Sour Tennessee Red," by John Deley and the 41 Players, courtesy YouTube Music Library. You can listen to the entire song here: https://youtu.be/Vfc9sAQjJtc
I use drawings from OpenClipArt.org, including the "walking man"
Technician training videos, see http://www.ke0og.net/training/
General training videos, see http://www.ke0og.net/general/
Amateur Extra training videos, see http://www.ke0og.net/extra/
List of the Ask Dave videos, see http://dcasler.com/ask-dave/#askdavelist (incomplete)
Thanks to my sweet wife, Loretta, KBØVWW, for both audio and video assistance! (Her website is www.aldea-art.com.)
My primary website: http://www.dcasler.com
The ham radio part of my website (direct link): http://www.ke0og.net
My publishing website: http://www.mtsneffelspress.com, where you can find my fantasy and science fiction books.
My Amazon author page, which lists my print and Kindle books: http://www.amazon.com/-/e/B00471I0Q4.
I’m often asked what equipment I use to create the videos. The devices include the Panasonic DMC-G7 camera, Panasonic HDC-TM90 video camera, GoPro Hero2 HD camera, Tascam DR-05 audio recorder, Audio-Technica ATR-3350 lapel microphone, Sony Cyber-shot DSC-W560 digital camera, the Kodak Zi-8 video camera, my iPhone 5S. Software used: CyberLink PowerDirector 17 on an HP Gaming Pavilion, also using Smoothdraw 4.0.5.0, FastStone Image Viewer 5.3, FastStone Capture 8.0, Audacity 2.1.1, LibreOffice 5.0.4.2, and Ink2Go 1.7.2. You can see how my studio is set up by viewing https://youtu.be/wFSQ8vtNA5A.
Twitter: @dcasler