05:46

More Ceramic Resonator Oscillators (3 and 2 pins) with transistor

03:08

Ceramic Resonator Oscillator with NPN transistor

00:31

I forgot to insert this PCB during last video edition, so here it is...

05:04

Trying shielded inductors from IFTs (intermediary Frequency Transformer) in a 50MHz lowpass filter

02:30

Comparing Colpitts crystal oscillator output signals from emitter, base and crystal

14:50

HA12019 dodecacomparator audio level display driver

04:31

Crystal oscillator - sine wave

08:05

Arduino Nano USB cable shielding surgery: the floating shield case

09:56

SDR, CAT, USB noise, USB isolator, USB cable with ferrite E core ballun test with NanoVNA

04:39

Code for the Arduino SDR receiver circuit experiment, including CAT control

03:44

GK-3 to GR-300 adapter - Roland guitar synth things

02:30

mc1496 balanced modulator board from the junk box

04:59

Arduino, HDSDR, OmniRig, CAT things

08:21

DTC - Double Tuned Circuit with IFT bandpass junk box filter

04:01

Quadrature hybrid, NanoVNA, lowpass filter, oscilloscope things

02:12

New box for the SDR (Software Defined Radio) receiver circuit experiment

01:41

Testing an old RF amp I found in the junk box

04:26

Winding an IFT (Intermediate Frequency Transformer) as variable inductor and measuring with NanoVNA

02:20

Bandpass Filter 25MHz - 37MHz

03:31

One usage example of those EMI (Electro-Magnetic Interference) filters from another video.

11:47

NanoVNA things and simple crystal test

04:35

SDR circuit experiment update, schematics and Arduino code

01:45

More EMI Filters

03:33

Small Receiving Loop Antenna with Matching Variable Capacitor - Test with NanoVNA

16:25

SDR receiver circuit test with small loop antenna

08:37

Front end band-pass filter with shielded variable inductors from IFTs

07:25

IFTs - Intermediary Frequency Transformers, look inside and test with NanoVNA

03:30

Variable Tuning Capacitor from AM-FM radios - Polyvaricon

04:16

Small Loop Antenna test with NanoVNA

03:13

10.7MHz FM IF ceramic filters test with NanoVNA

03:13

Electromagnetic Interference EMI filters

08:40

14 MHz 3rd order Butterworth bandpass filter for the SDR receiver experiment

12:47

13.560 MHz - What is this signal?

02:45

Ceramic Filter test with NanoVNA

02:23

Testing Another Homemade RF Power Splitter for the SDR Receiver Experiment

04:36

Testing a Homemade RF Power Splitter for the SDR Receiver Experiment

04:48

SDR 40m Front End test with NanoVNA

01:49

Checking NanoVNA output levels at 1MHz into a 50 ohms load

13:46

Arduino Quadrature VFO with Si5351a clock generator (schematic and code)

04:58

29MHz 5th Order Lowpass Butterworth Filter for the SDR DC phasing receiver circuit experiment

04:14

22dB gain Termination Insensitive RF Amplifier test with nanoVNA

07:35

An update on the SDR receiver circuit

02:51

RF preamplifier and filters improvised test

11:27

direct conversion receiver using an Arduino Nano and Si5351A clock generator

04:39

Homemade Diode Double Balanced Mixer the synth ring modulator's real father, but for RF

09:57

L-METER Arduino Inductance Meter schematic and code

01:05

faster

08:59

Si5351 4KHz to 160MHz I2C Clock Generator test, with Arduino Nano, rotary encoder and LCD

10:54

Arduino LED VU audio level meter, with dot and bar modes, and peak detector circuit

08:42

KA2284 LED audio level meter VU circuit (with schematic)

05:34

LM3915 audio level LED peak meter

10:47

LM3915 audio level LED VU meter

03:10

LB1416 audio level LED VU meter (with schematic)

05:49

Electric guitar and modular synthesizer

08:50

A peak indicator for the electric guitar to modular synthesizer preamp (with schematic)

08:58

LAPSUS ET RELAPSUS

10:45

Electric guitar preamp circuit for modular synth processing

17:35

VARIATION 11 (spectrogram)

04:29

Magnetic feedback sustainer with overdrive and wha-wha (spectrogram)

12:00

Eternal guitar sustain with magnetic feedback circuit (Esus?)