Pages with the most categories
From HFUnderground
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- Remote Control (6 categories)
- HF pagers (6 categories)
- AM (5 categories)
- Electronic warfare (5 categories)
- 11 meter (4 categories)
- Timtron (4 categories)
- CB (4 categories)
- QSL (4 categories)
- Kracker (3 categories)
- ENIGMA (3 categories)
- Italian 43 MHz VHF CB (3 categories)
- Ragnar (3 categories)
- DECT (3 categories)
- River Portable Radio 300 MHz - 344 MHz (3 categories)
- JAKT Radio 31MHz (3 categories)
- Community Audio Distribution Service (3 categories)
- RHA68 (3 categories)
- Al Fansome (3 categories)
- Andrew Yoder (3 categories)
- MURS (3 categories)
- Medium Wave Broadcast Stations by Country (3 categories)
- GMRS (3 categories)
- Jimmy the Weasel (3 categories)
- VHF marine (3 categories)
- Part 15 (3 categories)
- List of Nominations in the North American Pirate Radio Hall of Fame (3 categories)
- Boot (3 categories)
- UAV Frequency Bands (3 categories)
- Allan Weiner (3 categories)
- Havana Moon (3 categories)
- ALE (3 categories)
- Commander Bunny (3 categories)
- Tom Kneitel (3 categories)
- AM window (3 categories)
- Judica-Cordiglia brothers (3 categories)
- M25 (3 categories)
- FRS (3 categories)
- Radio propagation beacon (2 categories)
- VHF LADD (2 categories)
- PMR446 (2 categories)
- Famous hams (2 categories)
- Voice of Bob (2 categories)
- HM01 (2 categories)
- Radio Garbanzo (2 categories)
- Association of Clandestine Enthusiasts (2 categories)
- Letter beacon (2 categories)
- Telemetry (2 categories)
- Voice of Pancho Villa (2 categories)
- WFAT (2 categories)
- Militia Radio Frequencies (2 categories)
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