Quote:
Originally Posted by Nuvistor
I always thought the screening cans on LO was mainly to reduce oscillator radiation although the black ones reputedly radiated the heat way better than plain cans.
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Yes, I think you're right on both counts. More for screening than anything else, but also a heatsink - maybe! I can remember seeing them on most (all?) of the valves on an RA17 chassis, and/or a BRT400.