SWR of Several Mobile Antennas

SWR of Several Mobile Antennas

I had occasion to test four popular amateur radio mobile antennas. Here are the results of SWR and Return Loss of a Diamond SG7900ANMO, Larsen NMO 2/70, Cushcraft CS-270M and Laird QW144.

Laird NMO Mobile Antenna Mounts

Laird NMO Mobile Antenna Mounts

Two NMO through-hole antenna mount parts, the Laird MBO and MABO, were prototyped to help down select the choice of 3/8″ or 3/4″ hole. The opinions of engineers, machinists and others were obtained.

NMO Mobile Antenna Mount Options

NMO Mobile Antenna Mount Options

It’s time to replace my mag mount antenna and go “through hole” with my Mobile Antenna. NMO seems to be the way to go. Reviewed are some candidates from brand name to no name.

Magnetic Mount Antennas Don’t Suck

Magnetic Mount Antennas Don’t Suck

Magnetic Mount Antennas get a bum wrap it seems and for poor reasons and misunderstanding on how antennas work. Here is a way to see they are not so bad afterall… at least electrically.

Small Loop HF Mobile

Small Loop HF Mobile

A small loop antenna is described to realize good 40 meter performance in a mobile environment.

Amateur Radio License Plates

There are good reasons to have amateur radio license plates for your car. There are more reason not to.