The Signal Report | Operator Stories, Antenna Physics, Field Reports | Greyline

Twice a day the terminator sweeps your station and the low bands open along it. Here is the physics of greyline propagation, the field evidence, and how to be ready.

A current balun forces equal currents; a voltage balun forces equal voltages -- and on any real antenna, only one of those keeps the feedline out of the antenna. Including the voltage balun's one legitimate job.

A 4:1 balun often makes the SWR meter happier without making your signal stronger. Real analyzer plots from N3EQF show why -- and where the match should actually live.

One operator, one morning: KQ4DEP installed the tilt hinge solo, grew 20 feet to 24, and turned storm prep into a one-man job in Southwest Florida.

Bob Rysner, KC4OS, installed the smallest antenna we make days before Hurricane Milton arrived at 120 mph. His full damage report: a mere baby wind. The physics of why it stood.

Ground is three different jobs wearing one word: lightning protection, the RF return, and bonding. Here is the untangling, with the bookshelf open -- N0AX, N6LF, and K9YC.

A wire up the flagpole, a 49:1 at the base, and an SWR meter reading 1:1 -- so why is nobody coming back? Because half of that antenna is missing, and the yard was never going to hold it. The physics, the fix, and one question to ask before you spend a dollar.

Your tuner says the SWR is fine and the band says nothing. Here is the one equation that explains it, from Kraus and Zavrel, plus what Severns actually measured about radials and why a vertical dipole is a different animal.

Does your vertical need a ground rod? One of our operators asked before his first contact. The answer splits into two jobs: RF ground (you do not need one) and lightning ground (bond, do not isolate). N0AX and K9YC point the way.

She studied with her son, learned to solder, and stood up her own flagpole antenna. Now she out-DXes him.

He measured everything before he trusted anything. Then Switzerland came back on the second day.

A naval architect, a Maine granite ledge, a custom-fabricated tilt base, and a Greyline vertical ten feet from salt water. The honest install arc - friction, fix, and first DX - plus the physics of the best ground plane on Earth.