28:53

#617 How to Design a Crystal Filter

5:32

Unboxing Variable Air-capacitor

10:04

Review: Laserbeam digital audio filter from SOTA Beams (Pt 1)

10:22

#243: Mini-review & test of a variable audio bandpass filter from SOTABeams

25:52

#182 Modification Yaesu FT-817: BHI DSP noise eliminating filter NEDSP1061

4:43

Review: Laserbeam digital audio filter from SOTA Beams (Pt 2)

6:33

Pixie Hack Challenge: A 7 MHz AM transmitter built from a Pixie

16:29

Installing a Sotabeams Lazerbeam Filter in a Yaesu FT-817ND QRP Ham Radio