Three 12BY7A’s


Sharp Cut-off Pentode
The filaments are working but I have no other means of testing functionality.
They were collected over the years by my father who had his Amateur radio license.

  • Callsign : invited by VE7DXE
  • Phone : 416-988-2140
  • QRZ Validation
  • Shipping and Pickup : Will ship at cost., Pickup offered.