Posts

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

Make Your Own FM Vertical Sleeve Coax Antenna. Post 2129.

Image
If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=hK0KX0YcvH0. Thanks to "electronicsNmore" for this wonderfully funny and thoroughly enjoyable tutorial on how to make a simple FM Vertical Sleeve Antenna from a length of coaxial cable.  "Dinosaurous Rex" lends a helpful hand (or is it claw?) in assembling this simple, effective FM antenna.  Make a few of these antennas for your "go-kit" or for that next mini DXpedition to the nearest park. Here are some remarks from the video producer: "If you're looking to make a fairly simple vertical FM antenna(Transmit or Receive) for small devices, then this video may be for you. All that's required is some coax(preferably 50 ohm with copper shielding, a small diameter brass/copper tube, solder and rosin flux, heat shrink tubing, and an RF connector of your choice. Using a SWR meter would also be extremely useful for very pr

HF Antenna in the attic ham radio magnetic loop antenna for HOA

Image
If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=V9th_JBfMIk. This is Post 2138 in a continuing series of simple ham radio antennas. Thanks to Julian (OH8STN) for this creative antenna approach for radio amateurs living in deed-restricted properties.  In this video, we see how a magnetic loop antenna (in this case a Chameleon F-Loop) can be mounted in an attic to allow communications without drawing unwanted attention from neighbors or HOA committees. This antenna works best if your roof in non-metal.  Here are some of Julian's observations: "Hello Operators A former colleague and good friend in Ukraine, asked about a stealth antenna, and how it might work for his situation. The operator asked about magnetic loop antennas for HF, and if they could be would be completely hidden from view, by the surrounding community. In this video, I am using an attic mounted magnetic loop antenna, with a remot