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National HRO and its German Replicas

  • Spulenkaste AQSt - One of eight AQSt coil sets (Ber.2) with provisions for band spread. Just for comparison, two pictures are shown of Ber.7 coil set without provisions for band spread.

    Same four coils as in National HRO and Körting KST yet made on a common aluminum-bronze alloy base. Another evidence of heavy duty AQSt design…

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