Posts

160m End Fed Half Wave kite antenna. Post 2136..

Image
If you can't see the video,please insert this title URL into your browser search box: https://www.youtube.com/watch?v=xw6Sq2hkvIs. Here's another great antenna for the 160 meter amateur radio band.  All you need is a kite and 80 meters (262.467 feet) of strong wire.  Of course, a good wind really helps get this antenna into the air. According to "Steph", the entire antenna system is fairly simple and produces excellent results: "Using 80m of wire and a kite on the beach with backpack radio to operate on the 160m amateur radio ham band." ---------- For the latest Amateur/Ham Radio news and information, please visit these websites: http://www.HawaiiARRL.info. http://www.arrl.org. http://www.blubrry.com/arrlaudionews/ http://www.hamradioupdate.com. http://www.southgatearc.org. https://oahuarrlnews.wordpress.com. https://hamradiohawaii.wordpress.com. https://bigislandarrlnews.com. https://www.eham.net. https://paper.li/f-1576465810

m0dad bicycle mobile. Post 2135.

Image
If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=J0vZBsGi-jA. Ham Radio operators have installed their rigs and antennas in motor vehicles since the early years of the 20th century. In this fascinating video from UK radio amateur M0DAD, we see a complete HF station mounted on an ordinary bicycle.  The installation works quite well as he peddles down Blyth Beach, Northumberland, UK. Here are some of M0DAD's observations: "Video of my bicycle mobile amateur radio station. Riding along the seafront at Blyth beach Norhtumberland north east uk. Monitoring the realhfmobile dx net listening to group members from the north west coast uk in qso with Australia and New zealand. Also a discription of the equipment used." ----- For the latest Amateur/Ham Radio News and Information, please visit these websites: http://www.HawaiiARRL.info. http://www.arrl.org. http://www.blubrry.com/arrlaudionew

Ham Radio - Build your own L network antenna tuner. Post 2134.

Image
If you can't view the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=EXD9rAOM_o4 . Thanks to Kevin Loughnin (KB9RLW) for this remarkably simple, inexpensive L network antenna "tuner" for long wire and random length HF antennas. Coupled with a good ground radial / couterpoise system, this easily made "tuner" will allow multiband HF performance from a single end-fed wire antenna. Here are some observations from Kevin: "They're really very simple to build. I over-built this one to make it clear for the video, but you could make it smaller, put it in a nice box with labels and paint. ;-) I did just that in a newer video. https://www.youtube.com/watch?v=9-fuQ... The antenna I had connected for the demo is an external 98 foot (29.87 meters) end fed wire". ---------- For the latest Amateur/Ham Radio news and information, please visit these websites: http://www.HawaiiARRL.info. http://w

A balanced antenna coupler and multiband tuned feeder dipole

Image
If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=KLSqfgvGg8M. This is post 2133 in a continuing series of simple ham radio antennas. Here's another great antenna idea from Australian radio amateur Peter Parker (VK3YE).  All you need are 20 meters (65.6 feet) of antenna wire, 8 meters (26.24 feet) of balanced feed line, and a balanced antenna "coupler" to make an antenna capable of working any amateur/ham radio band between 80 and 10 meters. Here are some general guidelines from Peter: "Not your ordinary 7 MHz dipole. This works on all bands up to 28 MHz. It achieves this with a home made tuned feedline and balanced antenna coupler which is described in the video. The antenna is 20 metres from end to end while the feedline is about 8m long (neither critical). I only had room for 5 switches so omitted the 0.1 uH and 6.4 uH coils that VU2ESE used. Not having the latter may mean

Installing ground radials. Post 2132.

Image
If you can't see the video, please insert this title URL into your search box: https://www.youtube.com/watch?v=XxHIgveEIzM. A quarter wavelength vertical HF antenna needs a good ground radial/counterpoise system to work efficiently.  The ground radial system supplies the "missing half" of the antenna. Installing a decent ground radial system can be challenge.  In this video, Rodney Spenser (AE7QT) shows the steps he used to install the ground radial system for his vertical antenna.  While labor intensive, the finished product produced excellent results for Rodney. Here some of his observations: "Another eveloution in the 43' (13.109m) vert antenna I installed. For now the wire up the pole is about 35' (10.670m) long, this may change soon. So glad to be able to bury my radials, no more tripping on them, no more rolling them up to mow or when I'm off to work. Slow and steady on this project, but its coming along. 73 Alpha Echo 7 Quebec Tango Upd

Homebrew HF Mobile Antenna. Post 2131.

Image
If you can't see the video, please insert this title URL into browser search box: https://www.youtube.com/watch?v=TwoH5aX72yQ. Installing a mobile HF antenna in today's modern vehicles can be a challenge, especially if your new car or truck contains a lot of non-metal parts. Despite the lack of easy antenna locations these days, K1GMM has found a way around these limitations and has made an effective, HF mobile antenna with a few selected parts. Here are some of his observations: "Put together the HF mobile setup in the vw cc. 1st call a station in Detroit responded. Nice. Not a lot of science to it but wanted to try to throw some things together and see if they worked. It does. Loads 40-6 with a 1.2-1.5 swr using the AT7000 auto tuner. Homebrewed the mount for the ic7000 control head out of some scraps of pvc and a little velcro. Antenna mount is a Comet RS940. Nice big trunk lip mount. 73 K1GMM Music/Drums by K1GMM" ---------- For the latest Amateur/H

Ham Radio - My second HF antenna. A stealth end fed wire for 80 - 10 m...

Image
If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=oMchB-bML98. This is Post 2130 in a continuing series of simple ham radio antennas. Thanks to Kevin Loughin (KB9RLW) for this easily-made stealth antenna which works on all amateur/ham radio bands from 80 through 10 meters. Materials needed for the antenna project are modest: A wide band antenna "tuner". A 9:1 UnUn. 58 feet/17.678 meters of antenna wire. 40 feet/12.192 meters of wire for the counterpoise. The antenna may not work well if your home has a metal roof.  Here are some of  Kevin's observations: "I needed a second antenna for experiments and dual monitoring. Decided to try a stealth design. If you like my videos, please subscribe here: http://www.youtube.com/user/loughkb?s... If you want me to keep making more videos like this, consider becoming my patron at Patreon: http://www.patreon.com/kb9rlw/ Discuss this and