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Re: [Q15X25] Re: Kantronics, Kam XL

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  • Jose A. Amador
    Oct 12, 2006 Expand Messages
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      Could I suggest that PAX/PAX2 be considered as candidate modems formats?

      Those are very robust modem formats, far better than the traditional
      Bell 103 modems
      for HF, and might prove to be better than Q15X25 in poor conditions,
      specially on the
      lower bands. Q15X25 is faster, but requires a clean, stable channel, or
      it won't work.

      While PAX is rather slow, in comparison, it really fights to get the
      data thru when others
      fail and desist. It is better to have a slow working link than none at
      all. PAX requires
      about the same bandwidth as a Bell 103 modem. PAX2 is wider.

      Jose, CO2JA


      Paul David Gregg, KD4IDR wrote:

      >--- In Q15X25@yahoogroups.com, "Ken" <vk4akp@...> wrote:
      >
      >
      >>Hi guys, sorry it's been a while since I checked this group.
      >>
      >>Here's a bit of an update.
      >>
      >>From what I have heard the mode works fine. The only reason it doesn't
      >>have better support (YET) is that there are no simple hardware
      >>platforms available for it. This is why I was hoping to see Kantronics
      >> include the mode in their Kam XL. After all the XL bosts DSP
      >>technology and is the only TNC I know of currently on the market
      >>suitable.
      >>
      >>It is disapointing to say the least that years later nothing has been
      >>done to offer more modern DSP modes in this TNC, after all it is it's
      >>main claim to fame. Flash upgradable with the latest modes etc etc.
      >>
      >>Currently I receive no replies from Kantronics when emailing them
      >>about this. It has been over a year now since they first started
      >>development on the mode for their TNC.
      >>
      >>My current info from the grape vine is that they don't have a lot of
      >>interest in supporting the Amateur market for their product as money
      >>is more forthcomming from the commercial sector.
      >>
      >>This in it's self is very sad and bad news for us.
      >>
      >>So what does the future hold?
      >>
      >>I myself am currently looking at using USB sound card dongles chained
      >>off a dedicated PC. Power usage is of course going to be horrific and
      >>exactly the path I didn't want to go down as it will exclude such
      >>setups on hilltops etc where power is usually provided by solar
      >>panels. But what can you do. A TNC solution at present is going no
      >>
      >>
      >where.
      >
      >
      >>Long term, there is no reason why a developers group couldn't look at
      >>a alternative open source image for the Kam XL. While Kantronics do
      >>not seem interested in making their code open source. I can't see any
      >>reason why if a group started from scratch on their own version an
      >>alternative could be developed that supports not only Q15X25 packet
      >>but all the other packet modes and speeds currently so sadly missing
      >>from the XL. This sort of thing has been done for everything from the
      >>TinyTrack to DVD recorders. Where the original designers have let the
      >>consumer down, people have picked up the torch and turned a great yet
      >>lacking device into a killer product by getting together with other
      >>like minded users and writing their own firmware.
      >>
      >>So if anyone is interested in this and has programming ability. Please
      >>contact me vk4akp@... and perhaps we can start a developers
      >>group to do just this.
      >>
      >>In the mean time all my Kam XL's will go back into moth balls and I
      >>guess I will start to go down the USB sound card trail.
      >>
      >>Keep in mind that until a newer mode is invented, other then 1200 baud
      >>PSK, Q15X25 is currently the only other option available to anyone
      >>wanting to run packet on HF at a higher baudrate then the traditional
      >>300 Baud. I have also heard of people running G3RUH at 4800 baud on
      >>21Mhz. But once again, I don't know of any current TNC technology
      >>available to do this.
      >>
      >>As I've pointed out to Kantronics, what they really need is for the
      >>packet mode to be an independant setting to the baud rate. That way
      >>the device is far more flexable for things like HF and Satelite work.
      >>Once again, I won't hold my breath.
      >>
      >>Anyhow, I'd be interested to hear who's QRV in this mode and on what
      >>frequencies etc currently.
      >>
      >>Regards,
      >>Ken - VK4AKP
      >>.-.-.
      >>
      >>--- In Q15X25@yahoogroups.com, "Scott Thile \(K4SET\)" <k4set@> wrote:
      >>
      >>
      >>>Hello all,
      >>>
      >>>This mode never really worked all that well, and from what I can
      >>>
      >>>
      >>tell has
      >>
      >>
      >>>more of less died. We only see occasional posts here. Maybe one of
      >>>
      >>>
      >two a
      >
      >
      >>>month asking what's up....
      >>>
      >>>Forgive me if I am mistaken, but I doubt it will be worth developing
      >>>
      >>>
      >>on the
      >>
      >>
      >>>XL as it is simply not viable in its current state of development
      >>>
      >>>
      >on any
      >
      >
      >>>platform.
      >>>
      >>>Great idea, just didn't pan out and as far as I know, the developers
      >>>
      >>>
      >>in it
      >>
      >>
      >>>have lost interest. I think there is potential, but that is all
      >>>
      >>>
      >>there is at
      >>
      >>
      >>>this point.
      >>>
      >>>73 and 75, Scott, K4SET
      >>>
      >>>
      >>>
      >>>>-----Original Message-----
      >>>>From: Q15X25@yahoogroups.com [mailto:Q15X25@yahoogroups.com]
      >>>>On Behalf Of Ken
      >>>>Sent: Tuesday, May 03, 2005 11:56 AM
      >>>>To: Q15X25@yahoogroups.com
      >>>>Subject: [Q15X25] Re: Kantronics, Kam XL
      >>>>
      >>>>The Kam XL is a DSP TNC. The Tech at Kantronics tells me that
      >>>>it would be possible! The next step is to try and get the
      >>>>author to contact Kantronics and give permission for it's use.
      >>>>
      >>>>They also query wether the mode is too wide to be allowd in the US?
      >>>>
      >>>>Please everyone, help to make this happen!
      >>>>
      >>>>THis would mean many HF Gateways using the Kam XL's (Very
      >>>>popular) would become available. Q15X25 would become most
      >>>>popular and common place on HF!
      >>>>
      >>>>Regards,
      >>>>Ken.
      >>>>.-.-.
      >>>>
      >>>>
      >>>>
      >
      >
      >Ken,
      >
      > You should post this to the kantronics group. We have kantronics tech
      >support in there now. Maybe you can get them to help.
      >
      >http://tech.groups.yahoo.com/group/kantronics/message/282
      >
      >paul
      >
      >
      >


      __________________________________________

      XIII Convención Científica de Ingeniería y Arquitectura
      28/noviembre al 1/diciembre de 2006
      Cujae, Ciudad de la Habana, Cuba
      http://www.cujae.edu.cu/eventos/convencion
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