An airplane mechanic friend, who also happens to own a 35 year old single engine Cessna airplane, was working on his tail light when he saw broken and aging components in his tail mounted navigation antenna. While working to fix the problems he discovered an interesting balun technique.
We have looked at the 43 foot antenna available from DX Engineering and Zero Five alongside the BigIR product from SteppIR. In addition, the BigIR was simulated using the optional 80 meter coil.
Both antenna types approach the vertical HF antenna problem with unique solutions.
As we continue our EZNEC simulation research for the 43 foot and BigIR antennas we finally are looking into the 80 meter band.
Continuing our NEC Shootout between the 43 foot vertical available from DX Engineering or Zero Five and the adjustable height BigIR antenna available from SteppIR antennas we now analyze them in the 40 meter band.
Continuing our NEC Shootout between the 43 foot vertical available from DX Engineering or Zero Five and the adjustable height BigIR antenna available from SteppIR antennas we now analyze them in the 20 meter band.
Continuing our NEC Shootout between the 43 foot vertical available from DX Engineering or Zero Five and the adjustable height BigIR antenna available from SteppIR antennas we now analyze them in the 15 meter band.
In a previous post we promised to analyze the merits of the 43 foot tall tuner-required antenna vs. the adjustable BigIR vertical from SteppIR. We did and here are the results.
A fellow named Mel gave me permission to share his elegant method to locate the end of the copper tape in SteppIR antennas. The position of that tape needs to be known occasionally during maintenance. To quote…
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.
With the upcoming solar cycle pushing operations on the HF bands towards success on 20 meters to 10 meters you might be wondering if a vertical antenna may be the right choice for making the most of this time.
Well, to be honest you may well have just as much success with a simple horizontal dipole strung up.
Dipoles are pretty easy to build and don’t cost too much if you would rather purchase one from Alpha-Delta or the Wireman.
However, if you…
The topic of balanced to unbalanced converters is broad, detailed and deserving of study to apply them where needed. However, this post will discuss the simplest balun of all… the Choke Balun.
Many balun designs convert impedances 1:1, 1:2, 1:4, 1:9 and up.
If you are fortunate enough to have equipment to measure return loss of your antenna system here is a chart that will convert the return loss in dB to SWR…
The BigIR antenna from Fluid Motion looks like a winner, but there are some concerns about the 80 meter option.
If you are like many recently licensed Amateur Radio operators your first purchase may well be a good Icom, Kenwood, Yaesu or other brand Handy-Talkie or HT two way radio. These are most frequently for the 2 meter and 70 centi-meter bands (144 and 440 MHz).
The antenna that comes with your radio is probably about 8 inches long and is a compromise between convenient length and performance.