About 2 weeks ago I mentioned an intense and troublesome carrier on about 36 kHz which produced a very strong second harmonic on the ham band at 72 kHz. From the strength of the second harmonic I ded
I have been building a converter using a Double Balanced Mixer and a 4 Mhz clock osc as a LO. The advantages is its ability to handle HIGH levels of signals. I need to rebuild my RF amp and have orde