Open Stub J-Pole for 2 Meters and 70 Centimeters
The company, Arrow Antenna, markets the so-called open-stub J-pole antenna commonly known as the “Arrow antenna.” It is an odd-looking beast with active elements for both 2 meters and the 70 centimeter bands. It is, in fact, a J-pole (well, two J-poles combined into one), but it does not look like a J-pole. It is a straightforward build, but it does require threading the ends of three aluminum rods. Then again, if you’d rather not build it yourself, you can still buy one directly from Arrow.
Everything About 4:1 Baluns
There are a variety of ways to provide four-to-one impedance matches. Many of them are explained here.
How to Calibrate Your Nano VNA
It is time you ended all those sleepless nights wondering if your Nano VNA was properly calibrated. All the secrets are revealed to leave you with confidence your Nano VNA is the envy of all the neighbors.
Stealth 2 Meter Slot Antenna
HOA got you down? Remember that you are allowed to have up to a 1 meter satellite dish up “for television reception” in your private area. The HOA agreement cannot forbid that (and if they try, the FCC may come to your defense). Here is a simple design for modifying a typical DirecTV of Dish Network dish for 2m operation. I bet your HOA won’t figure it out.
Two-Meter Triangle Loop Antenna
This antenna has an aluminum yardstick as its primary component. The ruler markings on the yardstick provide a simple guide to exactly where the bends are needed to make the triangle. Total cost for the antenna itself should be under $10.
OCEF Dipole
This is a very curiously named off-center end-feed dipole antenna. The design goals included portable operation, broad frequency range (with appropriate tuner), and flexible mounting options.