Comparing NanoVNA with the Keysight Fieldfox N9952A
Vector network analysers (VNA) come in all sort of price ranges. Most of them are out of reach for a typical hobbyist. Very few VNAs are available to be bought by someone like you...
Author: nuclearrambo
NanoVNA – A short review
Do you build RF circuits? Have you built any antennas? If the answer to any of the two questions is YES, then you know how valuable having a VNA (Vector Network Analyzer) is. Just...
Using LimeSDR mini as a RF source
In one of the previous posts we saw how we could transmit DATV using LimeSDR mini. This time we are going to use our LimeSDR mini as a RF source in our home lab....
Manual VCO selection for a faster locking PLL
PLL chips such as the ADF43xx, MAX287x and so on come with an integrated VCO. The frequency range on these PLL chips can extend all the way from few tens of MegaHertz to several...
Transmitting DATV over the air with LimeSDR-Mini
Transmitting voice is something every ham operator must be doing regularly. There is a breed of hams which only stick to digital modes, while some prefer morse. Some ham operators go above and beyond...
A simple voice detector circuit
Voice detector can find it’s use in voice-activated circuits. For example, triggering a transmitter or enabling a speech processor and so on. At the end of this blog post, we will look at one...
RF Pulse generation with RF switch
Remember the previous post where we generated PWM? We are going to use the PWM output from the TivaC microcontroller and drive an RF switch. I will be using the Minicircuits HSWA2-63DR+ SP2T switch...
Generating PWM on Tiva C connected launchpad (TM4C1294)
Texas Instrument’s Tiva C connected launchpad is a really powerful Cortex M4 microcontroller board. The possibilities with this chip are endless. In this post, we will be generating PWM output on one of the...
Photos from Udaipur, Rajasthan
It was my first time to Udaipur, Rajasthan and that had me all excited to explore a new town. An initial homework on the internet showed me lot of palaces and lakes to explore....
Earn money with games
In this article you will learn from my experience how to earn money by hosting a game server off your computer. If you are among the people who don’t turn off their computer much, then...
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