Building a switchable resistance box to calibrate my MR-100 antenna analyser. 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=ZLjln3RKCr8
For a shorter HF antenna the "Random Wire" antenna is a good option provided that you use an RF choke to get rid of troublesome common-mode currents. Here I combine both the 9:1 UNUN and the RF choke in the same box for a tidier installation. This antenna is typically used with a tuner and is multi-band. Max power? 50W, maybe... Check out part 2 for performances.
Watch Part-2: Working on it...
Version Française: En cours...
Case STL file: Coming soon.
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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.
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https://www.youtube.com/watch?v=7fC3tDL9ho4
This week-end, Patrick, Frederic and I go to the perched village of Chateauneuf Villevieille for radio operations. First contact with the Racal VRM-5080 military tank radio on 6m FM, but also CB out of the LJ-70, some Morse code on 30m with the SW/ME-30 QRP transceiver and 2m simplex with the Retevis RT3S. Using half-wave end-fed antennas for 6 and 30m. An excellent week-end end and breathtaking view! Please 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=MJnm3zMOA7U
I am not a fan of amplifiers, but it was hard to pass at $29 for 50 Watts. This amplifier kit from QRP Labs works only for CW and maybe FSK digital modes, NOT AM, DSB or SSB (Class C). It was designed for the QCX CW transceiver but would work with any radio capable of providing 5V on key-down. Operation is full-break-in (QSK). The kit is pretty easy to put together if you read the manual carefully. Mounting the final transistors requires some attention but the procedure is very well explained. I would describe it as easier than building the QCX itself. This amplifier is an incredible value. I can't wait for the QSX kit! In the meantime, this is a good project to help you wait...
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Get the amp from QRP-Labs:
http://qrp-labs.com/50wpa.html 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=grebAFuwm-g
Delta loop antennas are awesome when you feed them well, either using a quarter-wave length of 75-Ohm coax or a 2:1 transformer, which I am building in this video. It works best from 80 to 15m, but will go up to 6m in a pinch as you will see being used with my Racal VRM-5080 on 6m FM.
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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.
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https://www.youtube.com/watch?v=HB6tk8Ul0bk
At last we get a dual band DMR/analog radio! http://bit.ly/radioprepperRT3Spost-1 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=JOcHqNtDClw
Testing the W3EDP antenna with the RT-320 on 80m. Please see: 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=OgCqLmHnpQo
In this video I test the Creality Ferret PRO 3D scanner. For those who are into reverse engineering and 3D scanning, it is certainly an irreplaceable tool.
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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=9bS-I8ZDRCc
The K1 was my first radio, built from a kit. I had my first ever contact as an amateur radio operator with it from Florida to France. I made the mistake of selling it, bought a second one later but lost that one in a boating mishap (long story). I really miss it and would like to find another one. Email me at gil@radiopreppers.com. Thank you! 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:
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...
https://www.youtube.com/watch?v=OD2Qu62z4M4
Not the most exiting video this week but your coax cable is a key item in your antenna system and should not be regarded as secondary.
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:
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...
https://www.youtube.com/watch?v=lOnJxO7JpBs