A so-called random wire antenna is an end fed antenna. One end goes straight into the rig ... For a given ham band its lower and upper band edge frequencies are converted by the famous 468/f to dipole ...

We've been getting a number of questions from readers about a mysterious "patch" on the edge of all of the iPhone ... it is a window for the mmWave 5G antenna. mmWave 5G support is only included ...

This model with the same spherical shape but green at one end imitates radio waves from a planar antenna (Inset Fed Patch Antenna). The antenna is placed so that the green part is in contact with ...