Check this address. They list 266 & 268 as using the same schematic. Maybe 266 didn't have the tuning eye?
http://www.nostalgiaair.org/Resources/228/M0009228.htm
Norm
:anybody know anything about a Gram. Its a Howard 266 with 3 knobs and no tuning eye.
::anybody know anything about a Gram. Its a Howard 266 with 3 knobs and no tuning eye.