Resources

Licensing

https://www.arrl.org/find-an-amateur-radio-license-exam-session

https://www.fcc.gov/wireless/bureau-divisions/mobility-division/general-mobile-radio-service-gmrs

https://glaarg-vec.groups.io/g/glaarg-vec

https://hamradioprep.com

General

https://www.arrl.org/technology

https://en.wikipedia.org/wiki/Wireless_community_network

https://www.radioreference.com/db

https://www.broadcastify.com/listen

https://globe.adsbexchange.com

Digital Mobile Radio (DMR)

https://www.pistar.uk

https://brandmeister.network

https://tgif.network

Antennas

https://hamradioacademy.com/antenna-theory-how-antennas-work-and-basic-types

https://www.repeaterbook.com

Software Defined Radio (SDR)

https://www.rtl-sdr.com/forum/

https://greatscottgadgets.com/

https://www.nooelec.com

https://www.lilygo.cc

https://airspy.com

3D Prints

Guides

RTL SDR Quick Start Guide

Signal Identification Guide

ADSB Aircraft Radar

https://meshtastic.org

https://greatscottgadgets.com/sdr

https://www.sigidwiki.com/wiki/Signal_Identification_Guide

Calculators

https://www.ve2dbe.com

1/4 Wave Ground Plane Antenna Calculator

Antenna Wavelength Calculator

Public Tower Coverage Maps

Other Hardware

https://flipperzero.one

https://lab401.com

https://www.krakenrf.com

Software

https://chirpmyradio.com/projects/chirp/wiki/Download

https://github.com/DSheirer/sdrtrunk

https://www.sdrpp.org