Connecting a Yaesu FT-70D to a Pi-Star Hotspot
If you’re looking to get your Yaesu FT-70D on Yaesu System Fusion (YSF) using a Pi-Star hotspot, you’re in the right place. Whether you’re running an MMDVM hotspot…
Amateur Radio
Amateur Radio
Diagnostic guide for mis-matched baluns (what to test and what it means)
Step 1 — Identify the symptom category A) “SWR is high everywhere” Likely causes: Action: B) “SWR is reasonable, but RF in the shack / hot mic /…
Ferrite core selection charts
A. Which mix to use (HF-focused) Mix Best general region Typical “why” Practical guidance Mix 31 ~1–30 MHz Excellent for choking common-mode on HF; good broadband behavior Best…
How to Choose the Right Balun: 4:1 vs 9:1 vs 49:1 Explained
Baluns and ununs are often treated as interchangeable “black boxes,” but selecting the correct impedance transformation ratio is critical for efficiency, bandwidth, and feedline behavior. Choosing incorrectly can…
Ham Radio Jargon