Building a reliable HF linear amplifier, especially one utilizing robust components like the IRFP150, requires more than just a solid RF deck. The protection circuitry acts as the
Lineup for this testing: 5W set in FT-710, AM Mode, running on 12V LiFePO410m HLF 200 patch cable from radio to linear amplifierVU2EVQ Design HF linear amplifierATU-100 External
The VU7 activation scheduled to begin tomorrow, Tuesday, February 10, 2026, is the AU7RS DXpedition from Agatti Island, Lakshadweep. Originally planned for an earlier start, the team faced
Predicting DX openings (long-distance contacts) is part science and part intuition. While the sun determines the potential, web-based tools provide the clarity needed to know when to turn
In the world of HF (High Frequency) radio, we often obsess over Standing Wave Ratio (SWR). We trim dipoles to the millimeter and spend thousands on high-end tuners
Congratulations on your license! Passing the exam is the “ticket,” but the next 30 days are where you actually become a Ham. Here is a specialized roadmap to
To design a Low Pass Filter (LPF) for the 80-meter band, the most common approach is the Pi-network ladder filter. This design uses a “ladder” of capacitors and
In radio circuitry, filters are the “gatekeepers” of frequency. They ensure that your receiver only processes the signals you want to hear and that your transmitter doesn’t bleed
That is a massive milestone when you have received your amateur radio license and is getting ready for the first on air contact! There is nothing quite like
