Heathkit DX-60 / A / B Unbuilt Young Kim DDS VFO Kit for Heathkit DX-60 /B Transmitter Complete NOS No Manual

Heathkit DX-60 / A / B Unbuilt Young Kim DDS VFO Kit for Heathkit DX-60 /B Transmitter Complete NOS No Manual.

 This kit looks complete but the manual got separated from the kit and I do not have one. If anyone has a manual please let me know!

• Specifications: The core daughtercard operates primarily on a 1-60 MHz frequency generation threshold (such as the standard AD9851 or AD9850 architecture) powered by a 5V DC micro-controller layout. It provides a pure sine wave output, typically adjustable via an encoder up to 4V peak-to-peak. It features a digital LCD/OLED interface displaying exact frequency, multi-band tracking (80-10 meters), adjustable tuning increments (10 Hz up to 1 MHz), and variable frequency offset calibration tailored for cathode or grid-block transmitter keying setups.
• Drake Amplifier & Gear Compatibility: Beyond driving the Heathkit DX-60B, this general-purpose high-stability VFO design is engineered to work across classic Drake tube transceivers that require low-drive external injection or remote VFO inputs. 
• Finding a Construction Manual: Because Young Kim distributed these kits natively or in small custom batches directly out of Los Altos Hills, secondary manuals are preserved heavily within dedicated vintage radio circles. Complete schematic diagrams, installation updates, and setup archives are actively maintained on the dedicated community repository ddsvfo.com under their shared files index. Additional step-by-step buffer interface details and wiring blueprints can be pulled directly from the WA1FFL Amateur Radio documentation library, which hosts exact structural assembly logs for vacuum-tube transmitter VFO integration.