I’m selling a classic Hewlett-Packard 200CD wide range oscillator with a range of 5 Hz to 600 kHz. A copy of the manual is at https://www.kennethkuhn.com/hpmuseum/scans/hp200cd_ser605.pdf .
I’m selling this wide range oscillator for $35. Prices that recent buyers paid on Ebay for a Hewlett-Packard 200CD oscillator range from $35 (assuming free local pickup) to $204.50 ($150 plus $54.50 shipping).
If you’re interested, call or text me at (612) 888-5766. My address has outdoor electrical outlets that you can use to try out this oscillator and make sure that it works as expected. I encourage you to bring anything you need to make sure that this oscillator works. As of this writing, I do have an oscilloscope (also for sale) that can help you verify that this oscillator works.
Jason Hsu, AA0II