His recent video shows how to put up a workable basic HF antenna in a small backyard. The center of the system is a 49:1 unun. An unun is like a balun, but while a balun goes from balanced line to ...

or even just a random wire vertical antenna. All of these will need to be connected feedline of some sort, and in the likely event you reach for some 50-ohm coax cable you’ll also need a balun ...

The long-wire dipole antenna is effective for low-frequency systems. Adding LC traps makes a single-band dipole antenna into ...

9.3 The 1:4 Balun The 1:4 balun, although not as popular as the 1:1 balun, has found considerable use in antenna applications. These include matching folded dipoles to coax cables and matching ...

A low-height flat dipole antenna sends signals virtually straight up (NVIS). By raising the balun—an electrical device that in this case matches a radio to coax/antenna—the transmitted waves are less ...

I suppose someone could build a directional 75-300 Ohm balun, but I've never seen one. Put F-59 connectors on the end of your coax and a 75-300 Ohm on the far end.

LONDON — Two passive ICs from STMicroelectronics NV allow designers to connect an antenna to a Bluetooth transceiver using a single chip. The BAL-2593D5U and BAL-2690D3U are integrated baluns used to ...

To “field test” their design, a PCB-mounted, AM-SMA spiral antenna element was integrated into its respective dielectric stack-up and attached to a test fixture. A balun was used to maintain a ...