Hope you enjoy them!
73 JOSE EB5AGV
| Crystal Test Set (written by Chris Trask N7ZWY) |
| Improved Crystal Tester (thanks to Jeff N2LXM) (please, read Note 1 below) |
| Pulsed Crystal Source (thanks to Jeff N2LXM) |
Notes
Note 1: The Figure 2 should show the junction of C1 and C2 connected to the emitter of Q1 (thanks Bob K9EUI for the info)