Let's Build a Bunch of 49:1 Half-Wave End-Fed Transformers.
The crowdfunding campaign is ON! https://igg.me/at/radioprepper DISCLAIMER: The Radio Prepper logo (depicting a microphone) is indeed inspired from a famous flag created in 1775. It is NOTHING BUT a symbol of freedom and independence. It does NOT imply support to any political group. It does NOT imply, represent nor support any ideology with an intent on harming anyone. Freedom means freedom from persecution based on any human trait or belief such as, non exhaustively, race, gender, religion, sexual orientation or nationality. The Radio Prepper channel is a technology and science channel with a focus on preparedness and use of radio technology for disaster relief and small group communications in times of need. It is apolitical and open to anyone sharing the same interests. . Subscribe to my alternate platforms: https://ugetube.com/@RadioPrepper https://odysee.com/@RadioPrepper:1 ... https://www.youtube.com/watch?v=mdJAjlLgwSw
Hitting the wall at 15-20wpm? Try this method of increasing your Morse code copy speed, it really works! https://www.patreon.com/radioprepper DISCLAIMER: The Radio Prepper logo (depicting a microphone) is indeed inspired from a famous flag created in 1775. It is NOTHING BUT a symbol of freedom and independence. It does NOT imply support to any political group. It does NOT imply, represent nor support any ideology with an intent on harming anyone. Freedom means freedom from persecution based on any human trait or belief such as, non exhaustively, race, gender, religion, sexual orientation or nationality. The Radio Prepper channel is a technology and science channel with a focus on preparedness and use of radio technology for disaster relief and small group communications in times of need. It is apolitical and open to anyone sharing the same interests. .
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...
https://www.youtube.com/watch?v=6WQiLNfEroY
The hourglass antenna looks like a great design for horizontally polarised VHF operations in SSB, CW or digital modes. Its vertical shape makes it easy to fit anywhere and it is not too long to fit inside a regular car. Efficiency is near that of a Moxon, about 5db, but with a bi-directional, almost omni-directional pattern. Much bigger than a Moxon, which I consider to be portable, but nevertheless it could be dismantled for transport. It is sort of a double Delta Loop. The feed-point has a fifty Ohm impedance, which is another great advantage as no matching is required. Get extra content and help this channel: https://www.patreon.com/radioprepper
Original design PDF:
http://www.arrl.org/files/file/QST/This%20Month%20in%20QST/December2018/Stanley.pdf
My Moxon antenna build:
https://youtu.be/vCcygBAOlWw DISCLAIMER: The Radio Prepper logo (depicting a microphone) is indeed inspired from a famous flag created in 1775. It is NOTHING BUT a symbol of freedom and independence. It does NOT imply support to any political group. It does NOT imply, represent nor support any ideology with an intent on harming anyone. Freedom means freedom from persecution based on any human trait or belief such as, non exhaustively, race, gender, religion, sexual orientation or nationality. The Radio Prepper channel is a technology and science channel with a focus on preparedness and use of radio technology for disaster relief and small group communications in times of need. It is apolitical and open to anyone sharing the same interests. .
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...
https://www.youtube.com/watch?v=7fsFx_Wf2Ko
There is at this time only one geostationary satellite open to amateur use, QO100, owned by Qatar. In this video I explore reception of HAM signals using a parabolic antenna and RTL SDR revceiver. Would SAT COMMS be of any use for prepping? Let's try it...
Version Française: En cours d'édition.
AMSAT DL QO100: https://amsat-dl.org/en/eshail-2-amsat-phase-4-a/
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DISCLAIMER: The Radio Prepper logo (depicting a microphone) is indeed inspired from a famous flag created in 1775. It is NOTHING BUT a symbol of freedom and independence. It does NOT imply support to any political group. It does NOT imply, represent nor support any ideology with an intent on harming anyone. Freedom means freedom from persecution based on any human trait or belief such as, non exhaustively, race, gender, religion, sexual orientation or nationality. The Radio Prepper channel is a technology and science channel with a focus on preparedness and use of radio technology for disaster relief and small group communications in times of need. It is apolitical and open to anyone sharing the same interests.
...
https://www.youtube.com/watch?v=PGdKbJC_LVE
The Half-Wave End-fed is an excellent antenna for CB, best used vertically. The 49:1 transformer is easy to make and affordable. This is a full size antenna with a low take-off angle great for skip and local communications. Wire length usually falls between 4.5 and 4.8m. Starting wire length in feet is 468 divided by the frequency in MHz. Check SWR and cut a little bit at a time. Do not use a metal box or expoxy. Hot glue is ok. Do not use another material than 43. The FT-140-43 can probably take up to 100W SSB, 70W AM/FM. For more power you would need an FT-240-43 or FT-240-52, even three FT-240-52 stacked together, but honestly it's not needed and illegal on CB! Do not use a CB amplifier as those are splatter boxes, and again, not needed. Military manpacks output 25-30W for a good reason, it's enough! 12W SSB legal power is plenty with this antenna. Get a 6m cheap telescopic fishing pole and you're in business!
Version Française: https://youtu.be/qF9LRImBxP0
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DISCLAIMER: The Radio Prepper logo (depicting a microphone) is indeed inspired from a famous flag created in 1775. It is NOTHING BUT a symbol of freedom and independence. It does NOT imply support to any political group. It does NOT imply, represent nor support any ideology with an intent on harming anyone. Freedom means freedom from persecution based on any human trait or belief such as, non exhaustively, race, gender, religion, sexual orientation or nationality. The Radio Prepper channel is a technology and science channel with a focus on preparedness and use of radio technology for disaster relief and small group communications in times of need. It is apolitical and open to anyone sharing the same interests. .
Subscribe to my alternate platforms:
https://ugetube.com/@RadioPrepper
https://odysee.com/@RadioPrepper:1
...
https://www.youtube.com/watch?v=zkU_MjawbXU
A nifty little receiver from Retekess to get your news from broadcast radio stations.
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DISCLAIMER: The Radio Prepper logo (depicting a microphone) is indeed inspired from a famous flag created in 1775. It is NOTHING BUT a symbol of freedom and independence. It does NOT imply support to any political group. It does NOT imply, represent nor support any ideology with an intent on harming anyone. Freedom means freedom from persecution based on any human trait or belief such as, non exhaustively, race, gender, religion, sexual orientation or nationality. The Radio Prepper channel is a technology and science channel with a focus on preparedness and use of radio technology for disaster relief and small group communications in times of need. It is apolitical and open to anyone sharing the same interests.
...
https://www.youtube.com/watch?v=kKIF8POlmTQ
Trying the President Grant II CB radio on the Plateau de Caussols. If CB proves to be a good local means of communications, long distance contacts remain unreliable. Help this channel: https://www.patreon.com/radioprepper DISCLAIMER: The Radio Prepper logo (depicting a microphone) is indeed inspired from a famous flag created in 1775. It is NOTHING BUT a symbol of freedom and independence. It does NOT imply support to any political group. It does NOT imply, represent nor support any ideology with an intent on harming anyone. Freedom means freedom from persecution based on any human trait or belief such as, non exhaustively, race, gender, religion, sexual orientation or nationality. The Radio Prepper channel is a technology and science channel with a focus on preparedness and use of radio technology for disaster relief and small group communications in times of need. It is apolitical and open to anyone sharing the same interests. .
Subscribe to my alternate platforms:
https://ugetube.com/@RadioPrepper
https://odysee.com/@RadioPrepper:1
...
https://www.youtube.com/watch?v=nkibksxbsm8
An incredible tiny radio, all modes with five bands, what else could you possibly want? A more rugged case maybe... Nevertheless the uSDX or (tr)uSDX is an amazing little transceiver that should be in your bugout bag.
Build video: https://youtu.be/VvWYbiSx9NE
DL2MAN: https://dl2man.de
Get the uSDX kit: https://www.aliexpress.com/item/1005003908457475.html
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DISCLAIMER: The Radio Prepper logo (depicting a microphone) is indeed inspired from a famous flag created in 1775. It is NOTHING BUT a symbol of freedom and independence. It does NOT imply support to any political group. It does NOT imply, represent nor support any ideology with an intent on harming anyone. Freedom means freedom from persecution based on any human trait or belief such as, non exhaustively, race, gender, religion, sexual orientation or nationality. The Radio Prepper channel is a technology and science channel with a focus on preparedness and use of radio technology for disaster relief and small group communications in times of need. It is apolitical and open to anyone sharing the same interests.
...
https://www.youtube.com/watch?v=4LTHavN7vLA
We always need a good 50-Ohm dummy load. Here is a cheap build using a Chinese 250W resistor from Ebay. I will later incorporate an RF probe, also mentioned here. The case is a Hammond 1550Q cast aluminum, which will not dissipate 250W. You would need a heat-sink for anything more than 30W probably... Resistor: Search for "RFP 250N50." Get more content and help this channel: https://www.patreon.com/radioprepper DISCLAIMER: The Radio Prepper logo (depicting a microphone) is indeed inspired from a famous flag created in 1775. It is NOTHING BUT a symbol of freedom and independence. It does NOT imply support to any political group. It does NOT imply, represent nor support any ideology with an intent on harming anyone. Freedom means freedom from persecution based on any human trait or belief such as, non exhaustively, race, gender, religion, sexual orientation or nationality. The Radio Prepper channel is a technology and science channel with a focus on preparedness and use of radio technology for disaster relief and small group communications in times of need. It is apolitical and open to anyone sharing the same interests. .
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...
https://www.youtube.com/watch?v=ntE_JyBXeLs
Operating 2m SSB with my Icom IC-251E on a 600ft terril, which is a remnant of coal mining, this one in the town of Loos-En-Gohelle, North of France. https://www.patreon.com/radioprepper DISCLAIMER: The Radio Prepper logo (depicting a microphone) is indeed inspired from a famous flag created in 1775. It is NOTHING BUT a symbol of freedom and independence. It does NOT imply support to any political group. It does NOT imply, represent nor support any ideology with an intent on harming anyone. Freedom means freedom from persecution based on any human trait or belief such as, non exhaustively, race, gender, religion, sexual orientation or nationality. The Radio Prepper channel is a technology and science channel with a focus on preparedness and use of radio technology for disaster relief and small group communications in times of need. It is apolitical and open to anyone sharing the same interests. .
Subscribe to my alternate platforms:
https://ugetube.com/@RadioPrepper
https://odysee.com/@RadioPrepper:1
...
https://www.youtube.com/watch?v=MJVUyzqCetM