This script: Save as harmonics.py and run with python3 harmonics.py. Usage examples Below is an enhanced version that will Flag when a harmonic falls inside another ham band Add LPF design suggestions (e.g., recommended cutoff for each band) Export results…
Transmitters ideally generate a single radio-frequency carrier. In reality, non-linear devices (amplifiers, mixers, oscillators) generate harmonics — unwanted frequencies that occur at integer multiples of the fundamental operating frequency. Managing harmonic emissions is essential in amateur radio to: This article…
The GM-30 Pro’s zone and memory system allows you to run GMRS like a professional radio service. Below is a clean, scalable starter layout that mirrors how commercial and public-safety radios are organized. Zone 1 — GMRS Simplex (Local) Purpose:…
Who should choose which?This sidebar helps readers quickly understand whether a GMRS handheld like the Radioddity GM-30 Pro or an amateur (ham) HT better fits their use case. GMRS Handheld (e.g., GM-30 Pro) Best for: Key Characteristics Limitations Amateur (Ham)…
In the world of amateur radio, integrating digital networks like Allstar Link with Raspberry Pi has opened the door for compact, flexible repeater and node deployments. The AURSINC Shari PiHat is one such accessory that brings RF transceiver capability directly…
The arrival of a new year has always carried special meaning in amateur radio. It is a natural pause point—a moment to reflect on contacts made, skills learned, and stations improved—while also looking forward to what the coming months may…
If you’ve been exploring off-grid communications, emergency preparedness, or amateur radio, you’ve almost certainly come across two names: Meshtastic and MeshCore. Both are designed to create decentralized wireless mesh networks using inexpensive LoRa radios, but they approach the problem from…
Feature / Capability Radioddity GM-30 Pro Radioddity GM-30 Radioddity GM-30 Plus GMRS Certified (FCC) Yes Yes Yes Transmit Power Up to 5 W Up to 5 W Up to 5 W Channels / Memory 1,000 channels ~30 GMRS channels ~30…
General Mobile Radio Service (GMRS) continues to grow as a go-to communications platform for outdoor adventure, family trips, emergency prep, and everyday local comms. With that popularity comes a flood of handheld radios at every price point — and few…
For aficionados of fine Irish whiskey, few names carry as much esteem as Redbreast. Among its revered lineup, the Redbreast 15 Year Old holds a special place—a benchmark for what traditional pot-still Irish whiskey can achieve with patience, balance, and…