Today morning I woke up to see this on the NOAA Space Weather Prediction Center! Friends in high latitudes will be flooding X with wonderful displays of Aurora.
Predicting amateur radio band openings is a mix of analyzing “space weather” (the solar engine) and monitoring real-time activity (the results). For a seasoned operator or a technically-minded
For the 80m band (3.5 MHz) in my location today, the best window depends on whether one is looking for local Kerala/South India contacts or trying to reach
A Phase Shift QRM Eliminator is a powerful tool for removing localized, man-made noise from your HF receiver. Unlike a DSP noise reducer that cleans the signal after
ഹാം റേഡിയോ (Amateur Radio) ഉപയോഗിക്കുന്നവർ നേരിടുന്ന ഏറ്റവും വലിയ വെല്ലുവിളികളിലൊന്നാണ് പ്രാദേശികമായി ഉണ്ടാകുന്ന ഇലക്ട്രോണിക് നോയ്സ് (QRM). ഇത് പരിഹരിക്കാൻ ഏറ്റവും ഫലപ്രദമായ മാർഗങ്ങളിലൊന്നാണ് ഫേസ് ഷിഫ്റ്റ് QRM എലിമിനേറ്റർ (Phase Shift QRM Eliminator). ഇത്
ARSI Field Day and Winter Field Day are due in another 10 days. Choosing the best antenna for Field Day depends on whether you value multiband convenience (Fan
Moving beyond the basics of Software Defined Radio (SDR)—where we transition from “radio as a hardware box” to “radio as an app”—requires looking at the architectural bottlenecks and
Instead of two RF1000 toroids in the VU2EVQ linear amplifier design, I am using a single BN43-7051, which is a binocular toroid bought from VU2PTI as RF1000 was
I have nearly this situation for my 80m inverted V dipole because of mounting constraints. Height of antenna feed point is about 5.5 m from ground. Ends are
While the physics of antenna resonance can be visualized like a tuning fork, the underlying “engine” of radio theory is Complex Algebra. But you don’t need to be
