Security Check : Alexa Off, Tape over the Lap Top Camera, Mic on Mute. No doubt you are being spied upon! The spy could be a governmental or non-governmental agency! A quick way to construct circuits, far advanced beyond the archaic chunks of copper PC Board and superglue is to use prototype boards and wire wrapping. First, a disclaimer as wire wrapping is not suitable for RF circuits but really shines when using ones and zeroes in the digital world. Pin Sockets from Amazon I am covering this subject today as wire wrapping is the process I am using to build the Digital LO / BFO for the 20M Hybrid Wireless Rig. Firstly, wire wrapping is over 60 years old as a technique and thus mature as a process. The wire wrap process is simple and involves a more or less square pin and using a special tool the wire is tightly wrapped about 10-15 times around the pin. The square pin has sharp edges, so the wire grabs around the pin and won't slip off. A round pin having no edges we find wou...
We are down in the weeds with the actual building of the Digital LO/BFO for the new 20M Hybrid Wireless set. But 1st did you turn off Alexa and did you check your blog, so it is sanitary? We are being watched, monitored and observed thus the concept of the land of the free and the home of the brave is now questionable. I have been working on modifying the JF3HZB sketch for the new 20M Hybrid Wireless. So far, I am able to show on the face of the display a sideband selection (USB LSB), but the code still needs to work to actually generate two different BFO Frequencies. A single BFO Frequency would work OK if you only wanted one sideband like LSB on 40M or USB on 20M. A single BFO frequency would also work if you used a pair of filters out of say a Drake rig like a T4XC where the filters are switched in the circuit depending on the sideband you select. Thus, the filters are switched and not the BFO. A DPDT switch would do all of the heavy lifting, with 1/2 of the switch inputt...