Some radio things I find useful.
Vancouver Frequency List
Advanced Amateur Study Group
Check In And Chat
Getting Licensed in Colombia
Study Guide for the ROC(M)
Handhelds Compared 2022
APRS for Beginners
Create an APRS iGate
SPARC Radio Museum
ISED Call Sign Lookup
APRS.fi Vancouver
Line of Sight Calculator
Elevation Map
eHam Reviews
Advance Amateur Forums
Check in and Chat FB Group
BC Ham Radio FB Group
QRZ.com
Surrey Amateur Radio Communications Society