On Wed, Apr 30, 2025 at 5:19?PM n4buq via <n4buq=[email protected]> wrote:
The serial number for my TR-4 is 26040 which is presumably a Version 3 rig.
According to Garey's TR-4 documentation, V11 switched from a 12BA6 to a 12BZ6 at Version 4 (S/N 27000) but my TR-4's V11 is a 12BZ6 (not just the tube but the label beside its socket as well).
Is it possible Garey's chart is incorrect or am I misunderstanding it?? I found the following comment from Garey as well:
