MagLoop tuning introduction

You should not use an antenna tuner with a Magnetic Loop antenna, because it has a built-in manual tuner. If, however, you are using the Alpha Loop with the optional add-on element for VHF UHF+6 Meter then you may can use a tuner for 6 meters.

Please note that there are no added performance benefits to using an internal or external antenna tuner.

Only transmit with more than 5 watts after the loop has been properly tuned.

MagLoop Tuning Basics

To tune a MagLoop, turn your internal or external antenna tuner off by switching it into by-pass. You will then tune the loop using the manual tuning knob on the MagLoop or the remote control. You also need to retune the loop if you change your frequency enough that the SWR exceeds 2.5:1. Basically, whenever the SWR exceeds 2.5:1 without a tuner, then you should retune the Alpha magnetic loop antenna.

Tuning Technique

Use this 2-step process to tune your Alpha MagLoop antenna:

Step 1. Tune the antenna to provide the loudest noise floor from your radio while it is in SSB mode.

Step 2. Use an external SWR meter, your radio’s SWR meter, or an Antenna Analyzer to tune for the lowest SWR.

For more information about antennas see Antennas (arrl.org)