Ham Radio . Magnum Experimentum
Antennas, experiments, engineering and other articles of interest to radio folks.
There is no shortage of DX Engineering products in the many projects on this site and we list them here.
Please note the end caps in the KX4O-000049 drawing show quantity 3, but they come in one bag of twenty. Don’t buy three bags.
The Asymmetrical Hatted Vertical Dipole (AHVD) prototype is an easy to build, portable alternative to other freestanding vertical HF antennas such as the Buddipole.
We re-introduce the theory and origins of Cebik’s (W4RNL) Asymmetrical Hatted Vertical Dipole (AHVD) antenna with the hope to facilitate a vertical polarization portable 20-10m aerial for portable operations.
A 1/4 wavelength of 75 ohm coax inline with a full wavelength of 50 ohm coax is all one needs to make a simple 80m dipole become a wideband dipole antenna.
Build the venerable Hoverman TV antenna and watch digital broadcast high definition HDTV television this weekend. This version of a HDTV antenna uses amateur radio antenna building techniques to make a lightweight structure.
For quite a few years I have used the DX Engineering Maxi-Core Balun model number BAL050-H05-A.
I needed some quick deploy Baluns for the 80 Meter Turnstile Antenna covered earlier on Ham Help Desk.
Also purchased were two DXE-UWA8X-KIT products which provide hoisting points and strain relief for RG-8 size coax.
The new antenna for 2010 at this QTH will be the popular G3TXQ Broadbeam Hex Beam. What follows is a look at the DX Engineering Hex Hub.
“Put a Hex on you…” Three antenna suppliers are making the Hex Beam antenna an easier choice for your next 20-10 meter beam.
This is a bit silly of a post for an amateur radio web site.
However, I just had to toot the horn of one company who has consistently provided great service. That company is DX Engineering.
If you might be wondering if there is a difference between older and newer Radial Plate kits from DX Engineering there is… for the better, but there was a catch…
Considering a vertical? Among all the dipoles, beams and other types of antennas, the lowly vertical has regained some popularity thanks, in part, to the BigIR SteppIR and, more recently, the 43 foot vertical offered by DX Engineering and Zero Five antennas.
Furthering the discussion of the 43 foot vertical antenna I wanted to report a concern I have with this antenna and the use of any relay based coax switch.
If you install a 43 foot vertical in your back yard, route the coax through a switch and handle the tuning inside your ham shack, you need to ensure you do not exceed the voltage or current limits of the relays in the switch.
The 43 foot vertical antenna is a popular height being promoted by several antenna manufacturers for 160 to 10 meters. Let’s see why and examine some advantages and pitfalls.
A close look at the DX Engineering RR8-HP eight port coax switch with lots of pictures including interior views.