For sale is a used military surplus HP 8011A pulse generator. It has been found to produce signal on oscilloscope, untested beyond that.
20 MHz Pulse Generator * Dual outputs, +10V and -10V * TTL output * Gating, square wave, double pulse modes * Repetition rate 0.1 Hz to 20 MHz * Positive/negative/symmetrical output * Normal/complement switch * Transition times: < 10 ns fixed * Pulse width: 25 ns to 100 ms in four ranges. Vernier provides continuous adjustment within each range * Maximum output: 8 V. With internal 50 ohms and external Hi-Z or internal Hi-Z/external 50 ohms, then 16 V max * Repetition Rate and Trigger: 0.1 Hz to 20 MHz in 5 ranges. Vernier provides continuous adjustment within each range. * Power: 100/120/220/240 V rms; + 5%, -10%, 48 Hz to 440 Hz, 70 VA max * Weight: 9 lb * Dimensions: 5" H x 7.9" W x 11" D