Ham Radio Prep
hamradioprep.com
Covers
Online exam-prep courses, practice tests and licensing education
Monetization
Runs its own 20%-commission referral/coupon-code partner program via Refersion, separate from equipment retail
Traffic channels
Not independently measured
Why this site is worth studying
Demonstrates that exam-prep education, not just hardware, is a monetizable wedge in this niche; a beginner content site could legitimately point to education-side affiliate or partner arrangements as well as equipment retailers, provided terms are confirmed directly.