Quote:
Originally Posted by FrankB
The main solution here was to take an ARC5 and convert it to a "Q5er". Plenty of articles on this in QST, CQ, and ARRL hand books of the post Korean War era.
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IF response curve attached - See QST for January 1948. I use a standard BC453 'Q-Fiver' with one of my HROs and another (modified) with a BC348-C. Both give a huge improvement subjectively. Just don't ask about shape factors and all that.
Peter G3PIJ