[Elecraft] K3/K3s; Digital modes, specifically DV

Harry Yingst hlyingst at yahoo.com
Mon Mar 27 22:57:18 EDT 2017


The mcHF is nice but it is still a work in progress.
But it does show what can be done.



-------- Original message --------
From: Bob Nielsen <n7xy at n7xy.net> 
Date: 2017-03-27  10:46 PM  (GMT-05:00) 
To: Harry Yingst <hlyingst at yahoo.com>, Elecraft Reflector <elecraft at mailman.qth.net> 
Subject: Re: [Elecraft] K3/K3s; Digital modes, specifically DV 


    The more I look at the mcHF, the more impressed I become.  Once I
      get caught up with my current projects I'll seriously consider
      getting one.  

    
    The FreeDV code and more importantly Codec2 are indeed open
      source.  I don't know how much room there is in the K3/KX3/KX2
      firmware to add something like this but if possible, it would be
      quite useful in getting more FreeDV activity going.  in the
      meantime, I'll make up some cables to connect my KX2 to my SM1000
      and give it a try.
    Bob, N7XY

    
    

    On 3/27/17 6:54 PM, Harry Yingst wrote:

    
    
      
        
        There is a different
            group working on the firmware now  http://df8oe.github.io/mchf-github/ 
        

          
        

        
        As I understand it the
          FreeDV code is open source so Elecraft would not need to
          reinvent the wheel.
        

        
        

        
        

          

        
        
          
            
               
                   From:
                  Bob Nielsen <n7xy at n7xy.net>

                  To:
                  Harry Yingst <hlyingst at yahoo.com> 

                  Sent:
                  Monday, March 27, 2017 9:49 PM

                  Subject:
                  Re: [Elecraft] K3/K3s; Digital modes, specifically DV

                 
              

                
                  
                    Strangely
                      the mcHF website doesn't seem to mention it but
                      that's great.  

                    
                    

                    
                      On 3/27/17
                        6:15 PM, Harry Yingst wrote:

                      
                      
                        
                          The
                            mcHF does indeed have FreeDV built in RX and
                            TX (I'm looking right at it)

                          
                          

                          
                          I'm
                            running ver 1.5.7 of the firmware (Ia little
                            old as I have not updated it recently)
                          

                          
                          

                          
                          

                            

                          
                          
                            
                              
                                
                                   
                                   From:
                                  Bob Nielsen <n7xy at n7xy.net>

                                  To:
                                  elecraft at mailman.qth.net
                                  

                                  Sent:
                                  Monday, March 27, 2017 7:13 PM

                                  Subject:
                                  Re: [Elecraft] K3/K3s; Digital modes,
                                  specifically DV

                                
                                

                                  While
                                    the mcHF has some digital audio
                                    circuitry, I don't believe it 

                                    provides a digital voice mode.

                                    

                                    FreeDV is a very narrow-band (1.1
                                    kHz) digital voice mode using the 

                                    open-source Codec2, developed by
                                    VK5DGR.  One can run FreeDV without
                                    a 

                                    computer using the Rowetel SM1000
                                    adapter 

                                    (https://www.tindie.com/products/edwin/sm1000-freedv-adpapter/).
                                    This 

                                    should work nicely with a KX2 or KX3
                                    for portable FreeDV operation.  I 

                                    haven't tried doing that but it
                                    looks fairly straightforward.

                                    

                                    Bob, N7XY

                                    

                                    

                                      On 3/27/17 2:28 PM, Harry Yingst
                                      via Elecraft wrote:

                                      >  I would like to see Elecraft
                                      built it into their firmware.

                                      > I have a mcHF QRP radio that
                                      has Digital Voice in it

                                      >

                                      >        From: Richard Fjeld
                                      <rpfjeld at outlook.com>

                                      >  To: Elecraft Reflector <elecraft at mailman.qth.net>

                                      >  Sent: Monday, March 27, 2017
                                      2:13 PM

                                      >  Subject: [Elecraft] K3/K3s;
                                      Digital modes, specifically DV

                                      >    

                                      > Greetings to all,

                                      >

                                      > The K3/K3s is an excellent
                                      radio for digital modes due to the
                                      ease of

                                      > interfacing with a computer
                                      if desired.  A computer is not
                                      even needed

                                      > for some digital modes, and I
                                      have tried that successfully.

                                      >

                                      > I have mentioned in the past
                                      that I had tried the free software
                                      for

                                      > digital voice on HF called
                                      'FreeDV'.  I had worked a Canadian
                                      ham a few

                                      > times using it and he has
                                      been keeping in contact with me
                                      via email

                                      > encouraging me to get back
                                      into it.  I am starting to get up
                                      to date

                                      > again, and I found accurate
                                      reviews of it on

                                      > http://www.eham.net/reviews/detail/11016
                                        by K2RWF and WA0TPN.  I
                                      think

                                      > you will find the reviews
                                      interesting and informative.

                                      >

                                      > Notice that the reviews seem
                                      to be either at, or near, 5/5 or
                                      0/5. I

                                      > think both of the reviews I
                                      mentioned answer why that is.  I
                                      will keep

                                      > my experience mute and let
                                      you glean aye/nay from the
                                      reviews. Whether

                                      > you approve of digital voice
                                      or not, the K3/K3s is a natural
                                      for using

                                      > it, and it's fun.  (As always
                                      with digital modes, be kind to
                                      your finals.)

                                      >

                                      > FYI,

                                      > Dick, n0ce

                                      >

                                      >

                                      

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