Specifications

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at the feed point. Typical balanced antennas are dipoles and loops.
Unbalanced antennas need an RF
Ground or counterpoise to create
electrical balance and depend on the
quality of the ground for a high quality
radiated signal. Without a good quality
ground, unbalanced antennas will cause
interference, lead to RF in the radio
room, and be of very low efficiency due
to high losses in the ground. Typical
unbalanced antennas are long wires and verticals.
3.3.4 Antennas with Feed Point Tuning
Any antenna with a feed point tuner, such as an SGC Smartuner,
will work compatibly with the MAC-200. You can either leave the
MAC-200 to tune as it needs to or cut out the tuning function by
doing the following:
• Select the antenna
• Push the MANUAL button to disengage automatic tuning
• Press RESET to reset the coupler to bypass mode
• Push the LOCK button to lock the coupler.
3.3.5 Antenna Recommendations
There are many ways to connect antennas for use. Here are some
common examples that can help you get started with your MAC-
200. For additional information about antennas, we recommend
that you obtain a copy of our HF User’s Guide from our website at