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Bubble Pack Bandwidth Question

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Apr 18, 2015
What bandwidth do "bubble pack" radios use to transmit on the interstitial channels 1-7? All the bubble packs are combo GMRS and FRS radios these days, and unlicensed users can transmit on the shared interstitial FRS / GMRS frequencies (usually channels 1-7) as long as they have their radios set to 0.5 watts or less.

FRS transmissions are limited to narrow band, while licensed GMRS transmissions are usually wide band. So the question is: Are the bubble pack radios transmitting narrow or wide band on the interstitial channels 1-7?

Obviously the issue is that if the bubble pack radio is transmitting wide band on the interstitial channels, then unlicensed users are still transmitting illegally even if they have their power set to 0.5 watts, correct?



Some random guy on the internets.
Jul 27, 2005
Point Nemo.
All the ones I've seen are narrow band. They seem to err on the side of FRS compliance on the "shared" side.
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