Tayloe-Style Upconverting RF Mixer Transmitter Demonstration

This video shows a breadboard demonstration of using a Tayloe RF mixer to upconvert IQ data and transmit a radio signal to a receiver. It builds on two videos I made about Tayloe mixers and radio receivers.
Note: Would be a good idea to add a simple low-pass filter to the transmitter output. See this video: • Add a Low-Pass Filter ...
Chapters
0:00 Introduction
0:58 NA5Y schematic
1:11 My breadboard setup
2:23 Transmit-receive path
3:30 IQ modulation
4:44 Transmit IQ sine waves
6:49 LTSpice model
7:07 Circuit details
8:58 Obtaining IQ files
9:50 SSB demonstration
11:10 FM demonstration
12:38 AM demonstration
15:13 I on oscilloscope
Links to my Tayloe mixer receiver videos. The first explains Tayloe mixers and provides good background for this video:
• Tayloe RF Mixer Demons...
• Simple Tayloe Breadboa...
Dan Tayloe's paper: norcalqrp.org/...
NA5Y video on this: • ESP32 Based SDR Transm...
and see many other excellent videos on his channel.
W2AEW videos on IQ modulation
• #170: Basics of IQ Sig...
• #171: IQ Signals Part ...
• #262: IQ Modulator Bas...
W2AEW gets my vote for the best electronics channel on KZbin!
See also github.com/gru...

[@dl8cy]

Nice explanation and interesting examples, thank you for sharing your knowledge and greetings from Germany, 73 de DL8CY

[@electronics.tinker]

Thank you. It's great to hear from someone in Germany.

[@phillipneal8194]

Excellenet presentation/video. Thank you. I gotta think about this. I hate winding coils but I might need to for the filters.

[@electronics.tinker]

I agree that winding toroids would be the best way to get and tune inductors for RF filters. I suppose it would be interesting to see how well a breadboard RF filters could work at low frequencies like 1 MHz. One could compare its response to what a filter designer web site predicts. I'm glad you enjoyed the video.

[@michaellablanc6886]

Great companion video to your earlier coverage of the down converter / receiver circuit! Thanks for sharing this information in such an approachable manner. Is there any chance you have a GitHub location with the schematic or Lspice file? Thanks again for this really outstanding content.

[@electronics.tinker]

Glad you enjoyed it and good idea. I created repo called grug_misc_projects on github under user grughuhler. Let's see if KZbin lets me post a link. github.com/grughuhler/grug_misc_projects

[@michaellablanc6886]

Thank you so much for uploading those files. I am working on an order to Digikey so I can attempt to recreate what you demonstrated. Would you please confirm the values of R11-R14 and C6-C9? The schematic says {R} and {C}. Thank you again for providing this content.

[@electronics.tinker]

Yes, my mistake. I deleted the LTSpice parameter without adding a note. C=10nF and R=220 Ohms. Those values are interesting to play with. I am unsure how to best select them. I'll fix the picture on the github later.