When you’re building an antenna, you quickly realize that the math on paper rarely matches the reality on the roof. One of the biggest culprits is the Velocity
Ever since I heard of BITX radio, I have been wondering how that name came. The BITX (Bidirectional Transceiver) is called such because it utilizes a unique radio
Testing method modified from: #132: How to test MOSFETs with a DMM – a few methods… https://www.youtube.com/watch?v=gloikp9t2dA&t=106s (W2AEW). (I am using analog Multimeter instead of a digital one.
VU2EVQ Linear HF Linear Amplifier is useful in combination with uBITX QRP radio. Will give about 100W output on 40m and lower bands. About 40W output expected on
We are currently experiencing a G4 Severe Geomagnetic storm resulting from a solar coronal mass ejection which occurred on 18 January 2026. Read that crew on the ISS
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
