I use this ATU with my QDX and QMX when not using a matched antenna. It performs well (I recommend this seller, the same guy that is the approved tr(u)SDX seller), it¡¯s an automatic ATU with latching relays so doesn¡¯t drain the internal batteries anytime soon once tuned.?
The unit is about the same size as the QDX and is a great aesthetic match.?
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Richard Hinsley VK2ARH / W5ARH