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Petitions for Reconsideration of Part 95 Personal Radio Services Rules Report and Order

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mmckenna

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"Specifically, we amend Section 95.971(a) of the Commission’s rules to permit CB Radio Service transmitters to transmit FM voice emissions along with AM."

"We note that the ±2 kHz limit is the current European standard for CB radios that use AM and FM transmissions, thereby facilitating equipment compatibility."

About $@#&*(!!! time.

So, type accept existing FM capable radios and move on with this. Might need to put a CB back in my truck.
 

rescuecomm

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If the radios don't send PL or DPL, it won't key your repeater. How can that be worse than the courtesy tones that are defaulted "on" in the bubble packs? Approving technology updates to one radio service to reflect new modes of use, then refusing same to another is a bit Luditic (if that is a word).
 

AB4BF

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Now we'll need CB FM filters along with our FM Broadcast filters.

I remember my brother in law having a 100 Watt CB that had AM, FM and SSB. That was 30 years ago. I know it wasn't legal and I cannot remember what the brand name was.
 

bearcatrp

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Now we'll need CB FM filters along with our FM Broadcast filters.

I remember my brother in law having a 100 Watt CB that had AM, FM and SSB. That was 30 years ago. I know it wasn't legal and I cannot remember what the brand name was.
I had a CB radio with FM back in the day. For export only. Clear transmission. Only a few back then had one. No big deal.
 

BigDaddy419

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I'm an novice with all this, but what is (or will be) the overall benefit of adding FM modulation to the CB band?
 

mmckenna

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I'm an novice with all this, but what is (or will be) the overall benefit of adding FM modulation to the CB band?

FM is cleaner/clearer audio. It can sound better.
It also would technically make it possible to run things like CTCSS squelch. That would be pretty nice if you didn't want to make random contacts. Not sure if the current crop of FM capable CB's sold overseas support it, but it would be nice.

Not going to improve range, and probably won't handle skip as well as AM. That may be a benefit for some that just want better sounding local communications.

And most other countries permit it, and have for quite a while, so it makes sense for manufacturers. Not having to build separate or dumbed down products for the US market may help us see some different radios.
 

RFI-EMI-GUY

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I'm an novice with all this, but what is (or will be) the overall benefit of adding FM modulation to the CB band?

1) Better signal to noise ratio. At least in theory. The narrowband FM +/- 2.0 KHz that is permitted is just a bit better than AM modulation. SSB will outperform FM in low environmental noise conditions.

2) Better noise rejection and squelch operation

3) Ability to use tone squelch CTCSS.

It will be a better experience for most users as the radio will not be unsquelching constantly.
 
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