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GM3SBC QRO Modifications.

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  • Ed
    Hi All, I have posted a few pictures of a modified SoftRock Ensemble RXTX in the photo section. The folder is entitled GM3SBC QRO Modifications . Several
    Message 1 of 9 , Feb 14, 2013
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      Hi All,

      I have posted a few pictures of a modified SoftRock Ensemble RXTX in the photo section. The folder is entitled " GM3SBC QRO Modifications ". Several other photos will be added. In the next few days I shall follow up with text files detailing the modification including a General Description, Build of Materials list, Modification Procedure, Test Procedure.

      The photos are displaying a proof of principle model. Three RXTX SoftRocks have been modified to demonstrate that the design can be repeated with little variation. Almost 250 hours have been spent on the design, build and test to get to the present status and I am sure that further improvements can be made.

      Although the modification is fundamentally simple to incorporate, I would recommend that anyone deciding to have a go should already have had some experience of building and testing an Ensemble and bringing it to a successful conclusion.

      I can only say that this has been a most interesting little project.

      The Ubiquitous BS170, its latent power exposed !

      Regards

      Ed Murphy GM3SBC
    • John Greusel
      Excellent Job Ed! You stuck with your criteria of not having to hack up the existing structure much. The forced air cooling is a great idea for squeezing all
      Message 2 of 9 , Feb 14, 2013
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        Excellent Job Ed!

        You stuck with your criteria of not having to hack up the existing structure much.
        The forced air cooling is a great idea for squeezing all the potential from the BS170s.
        I thought you might jump right into the inexpensive Mitsubishi RF mosfets right off the bat.
        Is "off the bat" an American baseball expression or does come from cricket? :-)
        John
        KC9OJV
         



        From: Ed <ed.murphy31@...>
        To: softrock40@yahoogroups.com
        Sent: Thursday, February 14, 2013 9:05 AM
        Subject: [softrock40] GM3SBC QRO Modifications.

         
        Hi All,

        I have posted a few pictures of a modified SoftRock Ensemble RXTX in the photo section. The folder is entitled " GM3SBC QRO Modifications ". Several other photos will be added. In the next few days I shall follow up with text files detailing the modification including a General Description, Build of Materials list, Modification Procedure, Test Procedure.

        The photos are displaying a proof of principle model. Three RXTX SoftRocks have been modified to demonstrate that the design can be repeated with little variation. Almost 250 hours have been spent on the design, build and test to get to the present status and I am sure that further improvements can be made.

        Although the modification is fundamentally simple to incorporate, I would recommend that anyone deciding to have a go should already have had some experience of building and testing an Ensemble and bringing it to a successful conclusion.

        I can only say that this has been a most interesting little project.

        The Ubiquitous BS170, its latent power exposed !

        Regards

        Ed Murphy GM3SBC



      • John Rabson
        “Off the bat” may well come from cricket, but I seem to recall reading somewhere (in the works of Jane Austen?) there is a reference to the game of “base
        Message 3 of 9 , Feb 14, 2013
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          “Off the bat” may well come from cricket, but I seem to recall reading somewhere (in the works of Jane Austen?) there is a reference to the game of “base ball” being well established in 18th century England about the time that cricket became the English national game.

          It was recently reported that the Paris Cricket Club claims that the French invented cricket. If that is true, what is the origin of the game I used to play at our village school in England, and which had the name French Cricket?

          John F5VLF/G3PAI

          On 14 Feb 2013, at 16:22CET, John Greusel wrote:

          >
          > Excellent Job Ed!
          >
          > You stuck with your criteria of not having to hack up the existing structure much.
          > The forced air cooling is a great idea for squeezing all the potential from the BS170s.
          > I thought you might jump right into the inexpensive Mitsubishi RF mosfets right off the bat.
          > Is "off the bat" an American baseball expression or does come from cricket? :-)
          > John
          > KC9OJV
        • Sid Boyce
          That s a good suggestion John. I have been matching BS170 s for the mod and out of 15 I found 5 that are as near as damnit 3.13V. The spread is from 3.13V -
          Message 4 of 9 , Feb 14, 2013
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            That's a good suggestion John.

            I have been matching BS170's for the mod and out of 15 I found 5 that are as near as damnit 3.13V. The spread is from 3.13V - 3.18V.

            That saying applies equally to cricket though we think of it as involving little or no effort from the batter.
            73 ... Sid.

            On 14/02/13 15:22, John Greusel wrote:
             
            Excellent Job Ed!

            You stuck with your criteria of not having to hack up the existing structure much.
            The forced air cooling is a great idea for squeezing all the potential from the BS170s.
            I thought you might jump right into the inexpensive Mitsubishi RF mosfets right off the bat.
            Is "off the bat" an American baseball expression or does come from cricket? :-)
            John
            KC9OJV
             



            From: Ed <ed.murphy31@...>
            To: softrock40@yahoogroups.com
            Sent: Thursday, February 14, 2013 9:05 AM
            Subject: [softrock40] GM3SBC QRO Modifications.

             
            Hi All,

            I have posted a few pictures of a modified SoftRock Ensemble RXTX in the photo section. The folder is entitled " GM3SBC QRO Modifications ". Several other photos will be added. In the next few days I shall follow up with text files detailing the modification including a General Description, Build of Materials list, Modification Procedure, Test Procedure.

            The photos are displaying a proof of principle model. Three RXTX SoftRocks have been modified to demonstrate that the design can be repeated with little variation. Almost 250 hours have been spent on the design, build and test to get to the present status and I am sure that further improvements can be made.

            Although the modification is fundamentally simple to incorporate, I would recommend that anyone deciding to have a go should already have had some experience of building and testing an Ensemble and bringing it to a successful conclusion.

            I can only say that this has been a most interesting little project.

            The Ubiquitous BS170, its latent power exposed !

            Regards

            Ed Murphy GM3SBC





            -- 
            Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
            Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
            Senior Staff Specialist, Cricket Coach
            Microsoft Windows Free Zone - Linux used for all Computing Tasks
            
          • Brad Thompson
            ... to recall reading somewhere (in the works of Jane Austen?) there is a reference to the game of “base ball” being well established in 18th century
            Message 5 of 9 , Feb 14, 2013
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              On 2/14/2013 10:52 AM, John Rabson wrote:
              > “Off the bat” may well come from cricket, but I seem
              to recall reading somewhere (in the works of Jane Austen?)
              there is a reference to the game of “base ball” being
              well established in 18th century England about the time
              that cricket became the English national game.
              >
              > It was recently reported that the Paris Cricket Club
              claims that the French invented cricket. If that is
              true, what is the origin of the game I used to play
              at our village school in England, and which had the
              name French Cricket?

              Hello, John and the group--

              Would that be "Croquet"? This is a game played with mallets,
              wire wickets stuck into the ground, and wooden balls. It's
              possibly a cross between curling and polo<g>.

              73--

              Brad AA1IP
            • R. R. (Robby) Robson
              Perhaps the french Cricket should be pronounced Crick-AY ... -- Cheers, Robby Richard R. (Robby) Robson LTC USA (RET) www.wb5rvz.com www.wb5rvz.org
              Message 6 of 9 , Feb 14, 2013
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                Perhaps the french Cricket should be pronounced "Crick-AY"

                On Thu, Feb 14, 2013 at 10:27 AM, Brad Thompson <brad.thompson@...> wrote:
                On 2/14/2013 10:52 AM, John Rabson wrote:
                > “Off the bat” may well come from cricket, but I seem
                  to recall reading somewhere (in the works of Jane Austen?)
                  there is a reference to the game of “base ball” being
                  well established in 18th century England about the time
                  that cricket became the English national game.
                >
                > It was recently reported that the Paris Cricket Club
                  claims that the French invented cricket.  If that is
                  true, what is the origin of the game I used to play
                  at our village school in England, and which had the
                  name French Cricket?

                Hello, John and the group--

                Would that be "Croquet"? This is a game played with mallets,
                wire wickets stuck into the ground, and wooden balls. It's
                possibly a cross between curling and polo<g>.

                73--

                Brad  AA1IP



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                --
                Cheers,
                Robby
                 
                Richard R. (Robby) Robson
                LTC USA (RET)
              • John Rabson
                No. Croquet is a very different game. See http://en.wikipedia.org/wiki/Croquet (I believe this game is also played in the US). For a discussion of cricket, see
                Message 7 of 9 , Feb 14, 2013
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                  No. Croquet is a very different game. See http://en.wikipedia.org/wiki/Croquet (I believe this game is also played in the US). For a discussion of cricket, see http://en.wikipedia.org/wiki/Cricket.

                  French cricket seems to be a very cut down version of cricket and to have existed in several versions. Certainly, the version described at http://en.wikipedia.org/wiki/French_cricket bears little resemblance to what I recall playing.

                  73
                  John F5VLF

                  On 14 Feb 2013, at 17:27CET, Brad Thompson wrote:
                  > On 2/14/2013 10:52 AM, John Rabson wrote:
                  >> “Off the bat” may well come from cricket, but I seem
                  > to recall reading somewhere (in the works of Jane Austen?)
                  > there is a reference to the game of “base ball” being
                  > well established in 18th century England about the time
                  > that cricket became the English national game.
                  >>
                  >> It was recently reported that the Paris Cricket Club
                  > claims that the French invented cricket. If that is
                  > true, what is the origin of the game I used to play
                  > at our village school in England, and which had the
                  > name French Cricket?
                  >
                  > Hello, John and the group--
                  >
                  > Would that be "Croquet"? This is a game played with mallets,
                  > wire wickets stuck into the ground, and wooden balls. It's
                  > possibly a cross between curling and polo<g>.
                  >
                  > 73--
                  >
                  > Brad AA1IP
                  >
                  >
                  >
                  > ------------------------------------
                  >
                  > Yahoo! Groups Links
                  >
                  >
                  >
                  >
                • Tony Langdon
                  ... That s what we used to call French cricket. :) Not sure how it got the name, given it s not what s played in France by the sounds of it! :) -- 73 de Tony
                  Message 8 of 9 , Feb 14, 2013
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                    On 15/02/13 4:27 AM, John Rabson wrote:
                    > No. Croquet is a very different game. See http://en.wikipedia.org/wiki/Croquet (I believe this game is also played in the US). For a discussion of cricket, see http://en.wikipedia.org/wiki/Cricket.
                    >
                    > French cricket seems to be a very cut down version of cricket and to have existed in several versions. Certainly, the version described at http://en.wikipedia.org/wiki/French_cricket bears little resemblance to what I recall playing.
                    That's what we used to call French cricket. :) Not sure how it got the
                    name, given it's not what's played in France by the sounds of it! :)

                    --
                    73 de Tony VK3JED
                    http://vkradio.com
                  • Pascal
                    Nice job, Ed, we wait for your files 73/Pascal
                    Message 9 of 9 , Feb 20, 2013
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                      Nice job, Ed, we wait for your files
                      73/Pascal

                      --- In softrock40@yahoogroups.com, "Ed" <ed.murphy31@...> wrote:
                      >
                      > Hi All,
                      >
                      > I have posted a few pictures of a modified SoftRock Ensemble RXTX in the photo section. The folder is entitled " GM3SBC QRO Modifications ". Several other photos will be added. In the next few days I shall follow up with text files detailing the modification including a General Description, Build of Materials list, Modification Procedure, Test Procedure.
                      >
                      > The photos are displaying a proof of principle model. Three RXTX SoftRocks have been modified to demonstrate that the design can be repeated with little variation. Almost 250 hours have been spent on the design, build and test to get to the present status and I am sure that further improvements can be made.
                      >
                      > Although the modification is fundamentally simple to incorporate, I would recommend that anyone deciding to have a go should already have had some experience of building and testing an Ensemble and bringing it to a successful conclusion.
                      >
                      > I can only say that this has been a most interesting little project.
                      >
                      > The Ubiquitous BS170, its latent power exposed !
                      >
                      > Regards
                      >
                      > Ed Murphy GM3SBC
                      >
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