^GU5 sub for 6BZ6 in Heathkit SB-301

Discussion in 'Radio Circuits, Repair & Performance' started by K4TLJ, Nov 9, 2008.

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  1. K4TLJ

    K4TLJ Ham Member QRZ Page

    This is probably a known sub but here goes. I restored a Heathkit SB-301. Not wanting to modify the printed circuit I made an adapter for plugging in a 6GU5 in the 6BZ6 RF amp socket by just leaving off pin seven. Results are good. Got a 2 to 3 'S' unit improvement and lower noise on the higher bands.
     
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