Alex Loop Measurements
Posted by Richard Newstead on 12th Mar 2017
The Alex Loop is a popular commercial small transmitting loop antenna.
Measurements here are simply an aide-memoire for my own experiments. They should be used with caution.
Loop conductor Datalink DLC 213 premium (3.1m circumference). Conductor diameter 7.4 mm.
12-Mar-2017
SWR measuring instrument KVE60C Rev D4.01
Antenna in clear area. Centre of loop 3.3 m above ground level. Measurements made at the end of the standard supplied loop cable (approx 3.5 m RG58 - no common mode choke).
The figures can be used to calculate likely performance using online calculators. Click here for one by Owen Duffy VK1OD.
| 14.0990 MHz | 14.0860 MHz | 14.1100 MHz |
| 1.48 | 2.02 | 1.96 |
| 10.0985 MHz | 10.0900 MHz | 10.1065 MHz |
| 1.27 | 2.00 | 1.97 |
| 7.0976 MHz | 7.0915 MHz | 7.1035 MHz |
| 1.00 | 2.04 | 1.97 |