New FM mode channel plan!

Discussion in 'CB Radio Forum' started by russbrill, Feb 14, 2022.

  1. russbrill

    russbrill Medium Load Member

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    Correct... The new Part 95 regulation allows for 2.5 KHz of deviation.
     
  2. RockinChair

    RockinChair Road Train Member

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    So to get the deviation within the 2.5kHz spec will these radios require parts changes in addition to tuning?
     
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  3. russbrill

    russbrill Medium Load Member

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    If an export radio is at 5KHz deviation, it may be possible to adjust it down to the 2.5KHz spec. It just depends on the design of the radio.
     
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  4. Night Stalker10

    Night Stalker10 Road Train Member

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    You bring up a great point. With higher deviation like 5 kHz in an export radio, your audio will be a lot louder than a CB radio with 2.5 kHz deviation. Personally I hate the loud and so-called proud CB radios (snipped limiters), because they hurt my ears. They are too loud and hard to listen too. It will be interesting to see how these two different radios communicate on FM mode.
     
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  5. Timin770

    Timin770 Road Train Member

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    Yes loud and proud is a pita. If you are listening to certain conversations, one side blasts out with unintelligible ghoulash while the other guy is much softer. I can only surmise that most of the "loud" guys don't know how bad they sound
     
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  6. Night Stalker10

    Night Stalker10 Road Train Member

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    I agree. For some reason when their audio is too loud, the tone of their voice isn't very pleasant to listen too. It's more of a screeching sound to my ears. So they would probably be very upset that I quickly turn my volume off rather than listen to them, especially after all the money they spent having a tech make it sound that way.
     
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  7. russbrill

    russbrill Medium Load Member

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    If you're in Narrow FM and another station is using Wide FM, the Wide station will have clipped audio in the Narrow FM receiver.

    Here's a better way to say it :D Listening to a wide band FM signal with a narrow band FM receiver (or conversly a narrow band FM signal with a wide band FM receiver), you may experience lower or higher than normal volume and/or some audio distortion.
     
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  8. Night Stalker10

    Night Stalker10 Road Train Member

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    Well that's something else I forgot about, the narrow vs wide FM. So basically the export radios will need to talk to each other, and the CB radios need to talk to each other, or else their audio won't sound as good.
     
  9. '88K100

    '88K100 Road Train Member

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    Make sure you tell them they sound like crap:DI’m installing a Motorola CM300 cuz its standard in my area, , not sure if I will leave the “workhorse of ages” TRC 427 or opt for a newer smaller CB. CB in my area is so dead, last road closure, over 2 miles of trucks and only 3 of us able to communicate:(
     
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