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Showing posts from September, 2020

How To Build A QFH Antenna

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https://www.youtube.com/watch?v=0XLURp33MBo&ab_channel=AirborneSurfer
If you do a lot of weather satellite monitoring, you'll find this tutorial on QFH antennas (Quadrifilar Helix Antenna) most interesting.
You can modify the antenna to cover GPS and Amateur/Ham Radio bands as well.
Her are some general comment from the author:
If you want to build an antenna to receive signals from a weather satellite, you will need a special kind of circular polarized antenna known as a quadrifilar helix antenna. In this video, we'll go through the theory and practice behind how to build a QFH antenna. These antennas are especially-made for NOAA weather satellite reception and are tuned to 137MHz to receive polar orbiting satellite signals. This is part of Project TIROS for element14 presents. You can watch the full build at https://www.element14.com/community/d... 🏄‍♂️ If you enjoy watching these vi…

6 Meter Squalo Antenna Build

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https://www.youtube.com/watch?v=U3ZGJWuzgRs&ab_channel=K2CJBRadio
Thanks to Cris (K2CJB) for this intriguing 6 Meter Antenna. The "Squalo" resembles the old 2 Meter "Halo" Antennas that were popular with mobile hams several decades ago.
This antenna is compact, portable, and highly "stealthy" for those living in deed-restricted homes and apartments.
Cris does an excellent job of taking us step-by-step through the design, construction, and use of this unique 6 Meter antenna.


Plans for the original antenna can be found here:
http://www.pa3hcm.nl/?p=312.
Thank for joining us today.
Aloha es 73 de Russ (KH6JRM).


Antenna Tilt Base-EZ Project (Ham, CB. TV)

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https://www.youtube.com/watch?v=XaPUn9wy_hw&ab_channel=W5CYF%2FTinkerJohn
This is post 2372 in a continuing series of simple ham radio antennas.
Thanks to "Tinker John" (W5CYF) for this useful antenna accessory. For around $25 and a few locally available materials, you can make a sturdy tilt mast base for your vertical antenna.
The homebrewed device will come in handy should a storm arise or nosey neighbors ask questions about that pole sticking up in your backyard. I've used a similar tilt over arrangement for my 80 meter vertical helix.  Out of sight out of mind.  Plus, the tilt over base reduces the chance of wind damage or lightning striking your vertical antenna.
Here are some of John's comments:
Using off the shelf material and hardware you can build a simple tilt base for your vertical antenna. EZ Project using hand tools and less than $25 in material. Click here to see …

Building a cheap, portable, vertical antenna

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https://www.youtube.com/watch?v=RCYuVBaJijg&ab_channel=OneTimePad
This is post 2371 in a continuing series of simple ham radio antennas.
Thanks to Adrian (EI9HAB) for this simple 20 meter antenna project.
Costs are listed at the end of the video.  This antenna can be used on other Amateur/Ham Radio bands with an ATU (antenna tuning unit). ----- For the latest Amateur/Ham Radio news and information, please visit these sites:
http://www.HawaiiARRL.info. http://www.arrl.org. http://www.hamradioupdate.com. http://www.southgatearc.org. https://www.blubrry.com/arrlaudionews/ https://oahuarrlnews.wordpress.com. https://hamradiohawaii.wordpress.com. https://bigislandarrlnews.com. https://www.eham.net. https://paper.li/f-1576465810 (breaking Amateur/Ham Radio News).
Thanks for joining us today.
Aloha es 73 de Russ (KH6JRM).

Antenna mast/homemade/for Ham Radio

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https://www.youtube.com/watch?v=OSbuHE6-TLE&ab_channel=HamRadioPortable
This is post 2370 in a continuing series of simple ham radio antennas.
Thanks to Steve (AD4XT) ("Ham Radio Portable") for this simple, fascinating, and efficient mast for ham radio antennas.  The mast uses a pivot point, bolts, and locally available lumber for most of the project materials.  A sturdy mast worth your attention.
AD4XT offers these comments:
30' Homemade antenna mast for ham radio. I did not want to wait 20 years for a tree to grow where I need one. No guy wires at the height that I am using. Enjoy, 73 I am good on qrz. Ad4xt ----- Thanks for joining us today.
Aloha es 73 de Russ (KH6JRM).

An Unusual Jpole Antenna

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https://www.youtube.com/watch?v=Pp3PsWz_vII&ab_channel=DavidCasler
This is post 2369 in a continuing series of simple ham radio antennas.
In this video, David Casler (KE0OG) builds a new Jpole antenna based on an original 1970s design by Jerry Bustin (KR7KZ).  Please note the interesting feed arrangement.
Here are some general comments from Dave:
Here's an unusual Jpole antenna sent me by Jerry Bustin, KR7KZ. He first made these in the 1970s while stationed in Okinawa. Interesting feed arrangement. To get the pdf drawing, go here: https://dcasler.com/wp-content/upload... Subscribe: https://youtube.com/user/davecasler. Ask Dave Playlist: https://goo.gl/inaQeB. Tip Jar: http://ke0og.net/tip-jar To learn more about me, visit: http://www.dcasler.com/about/ 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 …

Abbree Foldable CS Tactical Antenna

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https://www.youtube.com/watch?v=hF_CxUE48Yc&ab_channel=KB9VBRAntennas
If you want to add a bit more "punch" to your HT signal, why not add this new "Abbree Foldable CS Tactical Antenna" to your emergency "go-kit?"
Michael Martens (KB9VBR) reviews the performance of this compact, lightweight VHF antenna and recommends the kit for those concerned with getting a decent signal from your HT.
Here are some of Michael's observations:
I was looking for an antenna to throw in my camping kit to give the portable radio a little more range. Typically campsites and backwoods locations tend to be RF challenged, so I wanted something for my Yaesu FT-3DR to pick up area repeaters and APRS traffic without having to hoist up a larger base antenna. With that in mind, enter the Abbree foldable CS tactical antenna. Become a patron! Unlock exclusive content at: https://www.patreon.c…

DIY VHF 2M Jpole antenna out of 450 ohm line

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https://www.youtube.com/watch?v=ShRwnnejoO8&ab_channel=SurvivalComms
This is post 2367 in a continuing series of simple ham radio antennas.
Thanks to "SurvicalComms" for this ultra-simple VHF (2 meter) J-Pole Antenna.
All you need are a few basic tools, 5-feet (1.52 m) of 450 ohm ladder line, duct tape, soldering iron, and 10-feet (3.04 m) of RG-58 coaxial cable to begin the project.  A nice, inexpensive portable VHF antenna for both home and field use.
Here are some general comment from the author:
In this video I detail construction of a classic DIY antenna using 5' of 450 ohm window line (ladder line), 10' of RG58 coax w/bnc, a leatherman tool, duct tape, and a soldering iron w/flux and solder). Antenna is a 1/2 wave vertically polarized end fed design with a 1/4 wave matching section. Have fun !
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Thanks for joining us today.
Aloha es 73 de Russ (KH6JRM).

Portable HF Operation Kit

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https://www.youtube.com/watch?v=U1L-5wl5rpQ&ab_channel=KB9VBRAntennas
This is post 2366 in a continuing series of simple ham radio antennas.
Thanks to Michael Martens (KB9VBR) for this fascinating look at his mobile and portable amateur radio station.
Every radio amateur should have a "go-kit" for emergency operations.  Although you don't have to have a station as complete as Michael's, you should have sufficient resources to carry a portable HF/VHF/UHF station with you when the need arises.
Here are some general comments from Michael on what to carry with you should an emergency occur:
I like to take my ham radio portable kit when we are camping. Here's what I pack for portable operation be it in a park or in a wilderness setting. Items described are available from Amazon and other sources. Links are below: Tactical Sling Bag: https://amzn.to/2KIYMYU Domke 19 inch Protecti…