1. Complete part list showing all resistors, capacitors and semiconductors keyed to the photos showing their specific location on the PC board or chassis. A total of 12 pages in PDF.

2. Full color, high resolution photos of the chassis and each PC board (excluding PTO) with each part identified. Sized to print out on 8.5" x 11" pages, or may be enlarged on screen for a closer look.  A total of 25 photos in PDF.

3. Layout and photos of the 34-PNB Noise Blanker with typical voltages and alignment data. 

4. TR-4 Data based on Version 466827500 or [04/06/68 s/n 27500+].  Seven additional schematics only for earlier versions are included.

5. Full high-resolution PDFs of Original Manual for the TR-4. A total of 49 pages in PDF.

6. Miscellaneous additional files, Errata sheets and Alignment pages.  

7. Full high-resolution PDFs of Original Manuals for the 34-NB, MN-4, MN-2000, L-4B, W-4, etc.

All files are in Adobe Portable Document Format, and are readable on Windows and most non-Windows platforms, (including MAC OS 9 and OS X,) with the appropriate free reader from Adobe.

The files are available for download for $35, TR-4 and TR-4C BOTH for $50.  A CD can be provided for an additional $5 to US addresses ONLY.  Postage charges to other countries on request.  PayPal ( k4oah@mindspring.com ), cash, check or MO to:

Garey Barrell, K4OAH
2738 Kingston Hwy SE
Rome, GA  30161-9154


Every effort has been made to ensure the accuracy of the drawings and text included on this CD. Corrections and/or suggestions for additions are welcome.

Email to Drake4@mindspring.com for more information.        

* Service Part Locator for the Drake TR-4 *