Eico 369 Sweep Generator and Frequency Counter

[Crist Rigott]

Originally Posted by old_tv_nut

Can you get at the lower frequency oscillator that goes into the harmonic generator? As long as it's actually generating a harmonic (and not heterodyning with a second oscillator), you can just multiply the lower frequency by 2.0 or 3.0 to get the accurate result.

Great idea! Yes, it's 3X and that will work. The "lower" scale goes from 20 to 75Mhz while the "upper" scale goes from 60 to 225MHz. You're a genius. Thanks.