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Narrowbanding | RadioReference.com Forums
https://forums.radioreference.com/threads/narrowbanding.237774/
4) On the other hand, if the station's receiver doesn't have an adjustable IF filter width, it may try to deal with narrowbanding by simply changing the amplification factor of the audio amplifier, and if that change is made after the high pass filter (so that it doesn't also goose the audio going to the PL detector), you're going to have a problem.
Narrowbanding and Public Safety Communications
https://www.accg.org/library/2011_08_01_Narrowbanding%20and%20Public%20Safety%20Communications_Jay%20Sexton.pdf
Problems During transition Narrowband Signal to a Wideband Radio Quiet or ignored audio Wideband Signal to a Narrowband Radio Loud and distorted audio Narrowband signals may be missed After transition Digital systems possibly not compatible with analog systems or …
Narrowbanding Overview | Federal Communications …
https://www.fcc.gov/narrowbanding-overview
Check the radio service code on your FCC license. Only radio service codes IG, IK, PW, YG, YK, and YW are part of the narrowbanding requirement. Check the frequencies on your license. Frequencies between 150-174 MHz or 421-470 MHz are part of the narrowbanding requirement. Note: The following paging frequencies are exempt from narrowbanding:
Voting Restores Narrowbanding Loses with SNV-12 IP.
https://www.jpsinterop.com/voting-restores-narrowbanding-losses/
Coverage that remained after narrowbanding to 12.5 kHz is red, “lost” coverage shown in green. Communications Managers have had to deal with a rash of user talk-in complaints ever since their analog LMR systems were narrowbanded from 25 kHz to 12.5 kHz. Areas that had been marginal are now “dead” leaving portables completely unable to talk back.
How to Restore Analog Radio Coverage Stolen by …
https://www.orolia.com/wp-content/uploads/2021/07/simulcast_tech_brief_v4-1.pdf
Narrow-banding created significant talk-in problems for anyone dealing with one of these situations: • Analog systems in the VHF-Hi and UHF bands that had already experienced marginal coverage areas for their wideband portables. This was particularly prevalent if sites were originally selected with wideband mobile coverage in
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