Clik here to view.
Another new toy
After FDIM and spending some time visiting my daughter, I came back and thought about some of the on-going projects. At FDIM I had a chance to spend some time talking with Farhan, discussing my latest...
View ArticleClik here to view.
Using the NanoVNA to check an antenna
This is just quick followup to my last post on the NanoVNA. I ordered a SNA to UHF female adapter so I could try checking an antenna. For this I wanted to try the available PC application instead of...
View ArticleClik here to view.
Checking Step Attenuator with NanoVNA
I decided to check the step attenuator with the NanoVNA. It would be nice to see what the linearity of the step attenuator is across the frequency range I am interested in. After calibrating the VNA...
View ArticleClik here to view.
Starting on a Tiny Spectrum Analyzer
I have been playing with building a simple spectrum analyzer for a couple years now. I have tried several different versions, and have ran into similar problems with all of them. For what I want I...
View ArticleClik here to view.
Small update to the Step Attenuator
When I first built the step attenuator, I wanted it to check linearity of amplifier stages. I only needed a relative change in the insertion loss of the attenuator. Recntly I was able to use my...
View ArticleClik here to view.
HackRF One case
When I first started working on a Spectrum Analyzer design I needed some way to check the sweep ranges of the local oscillator, and output of stages. Since some of these were in the 100s of MHz., my...
View ArticleClik here to view.
SMA Torque Wrench for the NanoVNA (uncalibrated)
I have been using SMA connectors on most of my projects, and have occasionaly gotten a slightly different reading than I had expected. Using the NanoVNA, this has shown up a little more often. After...
View ArticleClik here to view.
UHF Version of TinySA
I had started on the TinySA from Groups.io HBTE, but am still waiting on some parts that I had orderd than have yet to show up. Looking around I found a UHF version that covers 240 to 940 MHz. This...
View ArticleClik here to view.
Best thing to come from the lockdown so far.
With almost everything being shut down from the virus, there must be something good happening. I think I have found at least one thing. Since we can't gather together the ability to hold meetings via...
View ArticleClik here to view.
An updated version of my VFO-BFO
A couple of the projects I have been working on have been put on hold because of the shipping delays caused by the Covid shutdown in many places. Looking around for something that only required what I...
View ArticleClik here to view.
VFO-BFO with ESP32
I made a circuit board layout for the ESP 32 based VFO-BFO using the Wemos ESP 32 Mini controller module. Sent Gerber files off to China and had 10 made up, they arrived in a little over a week with...
View ArticleClik here to view.
Impatiently waiting for a new toy
If you have been following my blog for a while, you know that I have made several starts on a simple Spectrum Analyzer. In most cases, as I progressed in the project I came to the point where I needed...
View ArticleClik here to view.
The New Toy is here
Well the new toy arrived today, and I have spent the last several hours just playing with it. It came a fairly well packaged box within a box, with a layer of bubble wrap. I tried to get some...
View ArticleClik here to view.
A little about the TinySA
I have received several questions about the TinySA. So, just a little history and hardware of the TinySA before I get into the settings and actual use. TinySA Main MenuAfter I joined Home Brew Test...
View ArticleClik here to view.
Easy Tracking Generator + for the TinysA
Well it has been a while since I did an update post for the TinySA or anything else. It has been a combination of some computer problems that I had to correct along with the associated data recovery....
View ArticleClik here to view.
Instrument storage boxes
While getting some equipment off a shelf I knocked some thing down and they landed on a nanoVNA, cracking the screen.Frog Box v2.0 (Rugged Waterproof Box Remix)I think it is time to make some protetive...
View ArticleThe N6QW Simple SSB Transceiver
Those that have been following my blog for a while, know that I am a fan of Pete Juliano, N6QW, and his MANY transceiver projects. Recently on the SolderSmoke blog, there was a post about one of...
View ArticleClik here to view.
Simple SSB Xcvr Mic Amp layout
Normally I would start with the audio amplifier board, but in this case I will start with the microphone amplifier for two reasns. First it is the simpelest to build, and second almost all the other...
View ArticleClik here to view.
Simple SSB Xcvr Mic Amp build d mp Layout
I had decided to build most of the transceiver using perf board. I prefer the double sided plated through hole variety to the bare variety. For me it just makes it easier to solder the part in...
View ArticleClik here to view.
Testing Audio Amplifiers
After finishing the microphone amplifier and the AF amplifier modules, it is time to test them. For the experienced builder with scope and signal generator available it is no problem. If you are...
View ArticleClik here to view.
Arduino controller VFO/BFO Test Set
I have done several versions of VFO/BFO circuits using differentmicrocntrolers. Any of these would work for the Simple SSB transceiver. Looking at these, you can see that they are also very similar...
View ArticleClik here to view.
VWS Direct Conversion Receiver Project
I have been working on several projects, most of them not related to electronics. The main electronic related one has made me look back on some code I wrote 6 years ago when I first started learing...
View ArticleClik here to view.
VWS DC Receiver Low Noise Amplifier
Getting back to working on the VWS DC Receiver, I decided to combine the AF mplifier and the low noise amplifier on the same board to cut down on size. Because I have been thinking about having...
View ArticleClik here to view.
Farhans' DAYLIGHT Radio
Unfortunatly I was not able to make it to FDIM this year, but was able to watch the streamed presentations. All of themwere good, but the one tht interested me the most was Farhans' DAYLIGHT RADIO....
View ArticleClik here to view.
3D printed project boxes
I have been busy with some other things that have kept me away from electronics projects for quite a while. Now I can get back to them, but realize I need some boxes to put them in. I have 3D...
View Article