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MikeSD

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  1. Like
    MikeSD got a reaction from wqhk941 in DMR on GMRS   
    Frequency coordination is not really official. They really have no power to stop anyone from doing anything.  All the FCC cares about is interference between users. FACT, if someone has a parked frequency pair, for amateur radio, but it's not used, and you put up a repeater, the FCC will not give a damn.  If there is no interference, there is no problem.  frequency coordinators do not own the frequencies. If they file a complaint with the FCC and there is no interference, the FCC won't care.
     
    To the person who wondered if DMR will work on GMRS, of course it works just fine.  In fact, if DMR is ever adopted, it will greatly expand the use of GMRS.  But FCC is always making sure that changes are backward compatible.  Fact is DMR would reduce a lot of interference.  That's what it's designed to do, and you get double the capacity, if not more. Two conversations can take place simultaneously on the same frequencies.
     
    Regarding how long it takes to transmit a text. This example is "I'll be headed home soon".  It was transmitted in DMR message, into a dummy load, and i real time speed.  You can hear the beep, when the message was sent.
     
    msdsite.com/DMR/dmr.mp3
     
    But being legal is an entirely different matter.
  2. Like
    MikeSD got a reaction from kirk5056 in FCC Rules - NOT!   
    I inquired about BTech advertizing. 
     
    Background
     
    They say in their ads for the GMRS 50X1 that there are 8 "modifiable" channels.  While that is technically correct, you MAY NOT change the frequencies of any of these 8 channels. 
     
    I have access to a couple of repeaters that use the same frequency, but with different tones.
     
    It's hard to know, sometimes which is which, on the same channel.  So, I wanted to reprogram one of these unused 8 channels, with a duplicate frequency, and store it in one of the 8 unused channels.  BUT the 50X1 cannot be changed.  It keeps reverting back to the original frequency.
     
    I asked BTech engineering and they say it's very easy to do by "quick" access to the tone menu.  Well that "quick" access requires a minimum of 8 key strokes on the mic.  Or lots of scrolling from the radio.  They also said the FCC prohibits that.  I believe they are wrong and just using the FCC as an excuse.
     
    This is a Memory Channel.  The FCC says nothing about how memory channels can be used or which frequency can go on which memory channel.  I believe the FCC only prohibits the user from selecting a frequency and using it outside the certified limits.  But BTech puts this on the FCC.
     
    Solutions
     
    Option 1:
    They could just make it clear in their advertisement that while the 8 "modifiable" channels are modifiable, the frequency is not.  I think most people reading that would think the frequency would also be modifiable (although ONLY within the repeater frequency options) but it is not.
     
    Option 2:
    BTech could very easily have "hard coded" channels for the first 30, like they do now.  All parameters that are allowed to be changed can be, like they are now.  Frequencies can't be changed.  For all the rest of the channels, they could be receive only, EXCEPT for copies, of existing hard coded channels.
     
    For instance, channels 1-30 are hard coded, you can't change frequencies.  It would be very easy in software, to allow COPIES of these 30, to any of the other channels, and have them modifiable, and allow transmit, WITHOUT allowing the frequency to be changed
     
    These other channels would just be pointers to the existing hard coded channels, BUT allow parameters to be modified, per the channel in question.  So, if you copied CH1 to CH40, You could operate channel 40 as it was in CH1, but only be allowed to change parameters per what was allowed in CH1.  This would allow 2 legally hard coded GMRS repeater frequencies, to have different channels, on the same frequency, with different tones.
     
    I doubt this would be a violation of the FCC.  Where am I wrong? If I am.  And if I'm right, this would add a very useful feature.
     
    Mike
    GM
  3. Like
    MikeSD got a reaction from wayoverthere in B-Tech 50X1 vs QYT KT-980 plus from Nat. net convo   
    I have both. The thing about the BTech I like is the screen layout. Dont know if that is possible on the QYT.
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