Category: Amateur Radio (Ham Radio)

TVS diodes or transient voltage suppression diodes are electronic components used to protect electronic devices from voltage spikes induced on connected wires. TVS diodes acts by shunting excess

Last year I had posted that AMSAT-OSCAR 7 (AO 7) was nearing its Golden Jubilee. AO-7 has completed 50 years of operation as an amateur radio satellite on

Folded dipole can be considered as a dipole antenna on top of which a loop of conductor is added so that it will be short circuiting any direct current fed

I had posted about my quarter century old TH 22AT radio a few days back. Now I am trying to figure out how to open it up and

Well, I had not heard of an upconverting superhet till I read about sBitx transceiver from VU2ESE. Usual superhets which I have heard of were downconverting superhets which

Many of you would have heard of Arduino, the popular microcontroller, especially those interested in hobby projects and those who are using the Arduino based µBITX QRP transceiver.

Today I had the opportunity to check in to a unique type of HF net, the BCDX Net on 7085 kHz. As I came a bit late to

My amplispeaker cum FM radio does not have a volume control. So it is hard to use it when a strong FM station is being heard. I thought

Here is a simple circuit with 74HC14 Hex Inverting Schmitt Trigger IC. Different values of capacitor can be tried to change the blinking rate of the LED. Though

As I did not have a regular FM radio, I thought of using an amplispeaker which could work as an FM radio if the mic with long cord