Category Archives: Ham radio
The morse code trainer app for Iphone, CWspeed I wrote about in a previous comment is now released on Appstore. You can try the free version and see if yoy like it. But I can assure you its worth to spend … Continue reading
Signal seems to be a bit unstable. Almost finished with Oscillator card but problem with unstable frequency when listnening to the signal from my IC-703. This is what it looks like in the waterfall. of a PSK-31 program.
Have put in a 20MHz digital scope and a 2 channel current limiting power supply. Convenient tools when building stuff. Signal generator next on the wish-list. Power supply and Scope to the left. I bought an Ikea Rast bedside table … Continue reading
I´m beta testing a new app for Iphone. Its called CWspeed and is made by SA6BNV Åke. Its a very nice app for practice your CW skills, both for a beginner and for someone who wants to improve their speed. … Continue reading
Sorry no picture of the test setup. But the reciver is working. I had only made one mistake. The scematics said 2 different transistors in the audio stage, guess I was a bit tired there. I used two of the … Continue reading
Have added some more components to the oscillator card. now about half is done. but a lot of obstacles still to come. I also made a new toroid for it. On yellow core instead of red to increaste temp stability. … Continue reading
The receiver part of the tranciever is finished. Have not tested yet but everything is there. Head phone jack is the only thing missing but that will be part of the box. When the picture was taken it also lacked … Continue reading
The receiver is almost finished. Mixer part is tested and works. Just a few components missing in the audio part. I have to decide if to prefer speakers or headphones or both. and to choose values from that.
Somehow some of these wires are in the wrong hole. I have to unsolder, measue and resolder. its the connections to the ring diode mixer seen from the bottom.
Have done first smoketest on receiver. Worked ok. No smoke. But on the other hand no signals either. Completely dead. Troubleshooting starts tonight.