Amateur Radio Reference Center

Amateur Radio Resource Guide

A collection of useful amateur radio links covering licensing, exam preparation, clubs, FCC services, station equipment, antennas, digital modes, repeaters, SDR, mesh networking, off-grid communication and test equipment.

External Website Notice

These resources open in a new browser tab. Product availability, website addresses and technical information may change. Confirm specifications and compatibility directly with the manufacturer or service provider before making a purchase.

License Test Preparation

Study tools, online courses, practice exams and exam-session searches.

HP Ham Radio Prep Online Technician, General and Amateur Extra licensing courses and study materials. Courses Practice Tests HS HamStudy.org Adaptive study tools, flash cards and practice examinations for U.S. amateur radio licenses. Study Exams VE Find an Exam Session Search for online and in-person amateur radio examination sessions. Exam Search HT HamTestOnline Interactive amateur radio license study and exam preparation system. Online Study

Local Clubs and Nets

Local amateur radio organizations, activities and net schedules.

L Livermore Amateur Radio Klub Club information, meetings, activities and amateur radio net schedules for the Livermore area. Local Club Nets

FCC and Your License

Federal registration, license records and amateur radio licensing services.

FRN FCC CORES Login Access the FCC Registration System and manage your FCC Registration Number. FCC FRN ULS FCC Universal Licensing System Search amateur radio licenses, callsigns and public license records. License Lookup

Associations and Groups

National organizations and amateur radio communities.

A ARRL The National Association for Amateur Radio, offering licensing, technical, regulatory and operating resources. National Association WRL World Radio League Amateur radio community, education, contests and operating resources. Community

Logging and Callsign Lookup

Contact logging, station records and amateur callsign searches.

QSO QSO Director Amateur radio contact logging and station-management resource. Logging QRZ QRZ Callsign Lookup Search amateur radio callsigns, operator profiles and station information. Callsign Search

Antennas, Coax and Connectors

Antennas, cable, mounting equipment, RF connectors and analyzers.

Antenna-System Resources

Select antennas and feedline based on frequency range, expected power, operating environment, connector type and installation method.

BA BuyAntenna.com Antennas and related amateur radio equipment. C Comet Antenna Amateur radio antennas, mounts, analyzers and accessories. A Anritsu Site Master Professional cable and antenna analysis equipment. B Bird SiteHawk Cable, antenna and RF analysis equipment. S SteppIR Antennas Adjustable antenna systems for amateur and commercial use. CFM Chameleon CFM-34 HD Heavy-duty portable antenna mounting system. MP Chameleon MPAS 2.0 Modular portable HF antenna system. BV Chameleon Basic Vertical Portable vertical antenna configuration. LMR Times Microwave Systems LMR-series coaxial cable and RF connector products. G Gabil Antenna Mounts Portable and vehicle antenna mounting products. DK DigiKey Electronics RF connectors, coax assemblies and electronic components. PRV Chameleon PRV 2.0 Portable resonant vertical HF antenna system. D Diamond Antenna Amateur radio base, mobile and portable antennas. JM Jackite Mast and Mount Kits Portable fiberglass mast and mounting solutions. M&P Messi & Paoloni Professional 50-ohm coaxial cable and RF connectors. H+ HamPlus Products Amateur radio station accessories and products.

Starlink and Accessories

Satellite internet service and portable deployment accessories.

S Starlink Satellite internet service and equipment. SG StarGear Solutions Mounting and deployment accessories for Starlink equipment.

Yaesu Equipment Links

Yaesu radios, accessories, parts and legacy-equipment references.

SM Yaesu SM-5000 Station Monitor Product and availability information through DX Engineering. PH Phonema PHITS Acoustic Kits Acoustic modification products for compatible Yaesu speakers. DC FTDX-9000 Dust Cover Protective embroidered radio covers and accessories. HR Used FTDX-9000 Equipment Used and estate amateur radio equipment listings. 9K Yaesu FTDX-9000D Yaesu amateur radio product and support information. FTX Yaesu FTX-1 Optima Current Yaesu FTX-1 series information and accessories.

Digital Information and System Signup

Registration, hotspots, digital voice and radio-email services.

D* D-STAR Gateway System D-STAR gateway registration and user access. OS SharkRF openSPOT4 Portable multimode digital voice hotspot. WL Winlink Global Radio Email Email and formal messaging through amateur radio. ID RadioID Digital radio identification registration and lookup.

Software-Defined Radio

SDR receiving, spectrum display and radio-control applications.

SDU SDRuno SDRplay receiver software and spectrum interface. ++ SDR++ Cross-platform open-source software-defined radio application.

Off-Grid Communications

Offline information systems and remote communications resources.

PN Project NOMAD Offline knowledge and AI server platform. HW Project NOMAD Hardware Recommended hardware for building an offline information server.

Repeater Information

Repeater listings, coordination information and linked systems.

N NARCC Repeater Lists Northern California repeater coordination information. CA Calnet Repeater Group California linked repeater network and system information. RB RepeaterBook Worldwide amateur radio repeater database.

Meshtastic and MeshCore

Off-grid LoRa messaging, mesh networking and firmware resources.

73 73 Mesh Amateur-radio-oriented mesh networking information. GH EasySkyMesh Firmware Firmware installation and project documentation on GitHub. M Meshtastic Open-source off-grid LoRa mesh communication platform. MC MeshCore Off-grid decentralized mesh communication platform. GW Dual Heltec V4 Gateway Meshtastic and MeshCore gateway hardware listings.

Equipment and Technical Links

Radios, accessories, databases, communications equipment and field gear.

K Kenwood TM-D710GA Kenwood amateur radio equipment and support information. CS Connect Systems Commercial and amateur digital radio equipment. RP RigPix Radio Database Specifications and reference information for amateur radio equipment. F FlexRadio Software-defined amateur radio equipment and community support. RT Radiotronics USA Two-way radios, walkie-talkies and communications accessories. CC CountyComm Government-style tools, field equipment and communications accessories.

Testing Equipment

Tools for antenna tuning, feedline testing and RF measurement.

VNA NanoVNA Compact handheld vector network analyzer for antennas, filters and RF component testing. Antenna Analyzer RF Testing

Deals and Used Equipment

Used amateur radio equipment and estate-sale resources.

HR Ham Radio Estate Planning Used radio equipment, station collections and amateur radio estate-sale listings. Used Equipment

Build, Learn and Stay Connected

Use these resources to prepare for license exams, locate repeaters, improve your station, explore digital communications and expand your amateur radio operating capabilities.