K7DYY Transmitter Repair and Theory
  
CKT Theory 1 (JPG, 8.45Mb)
CKT Theory 2 (JPG, 9.61Mb)
CKT Theory 3 (JPG, 6.29Mb)
Simplified Schematic A.jpg (JPG, 1.16Mb)
Simplified Schematic B.jpg (JPG, 1.47Mb)
Revisions Control Chip (JPG, 311Kb)
History of the Super Senior (TXT)
High Q Loads and Protection Trips (TXT)
Does the K7DYY Rig Enforce 375 Watts? (TXT)
Design Notes K7DYYSuper Senior 160 (TXT)
🠊K7DYY Super Senior Troubleshooting and Maintenance (PDF 1.46MB)🠈
🠊K7DYY 8040 Super Senior Theory of Operation (PDF 3.96MB)🠈
K7DYY History & Development

Back to K7DYY Schematics and Repair
K7DYY Website Archive

Repair service for your K7DYY Super Senior AM Transmitter:
  Kevin Pease, WB0JZG,   Ed Timmons, N2FRY.

The information on this website would not be possible without the work of:
• Greg Wasik, K1YW
• Ed Timmons, N2FRY
• Janis Carson, AB2RA
• Don Combs, AC2RS
• Rick Maxwell, W8KHK
• Dan Brown, W1DAN.
• Kevin Pease, WB0JZG.
• Ed Timmons, N2FRY.
⋅‒⋅ ⋅⋅ ⋅‒ ‒⋅ ‒⋅‒ ‒ ‒⋅⋅⋅ ‒⋅⋅ ‒⋅‒ ‒ ‒⋅‒ ‒

I am sorry to report that Bruce Douglas Franklin, K7DYY, passed away on February 28, 2026. 😢

Rest in peace, Bruce. 🙏 🙏
  

73,
Janis
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