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New version of my Antenna Tuner project

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  • pu2clr
    Hello everybody, I would like to share the new version of my Antenna Tuner project. Who enjoy QRP and liked the video Magnetic Loop Antenna controlled by
    Message 1 of 10 , Mar 20, 2013
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      Hello everybody,

      I would like to share the new version of my Antenna Tuner project.

      Who enjoy QRP and liked the video "Magnetic Loop Antenna controlled by Arduino
      and infrared", will appreciate my last one.

      Now I inserted an encoder to increase the possibilities to handle the antenna
      tuner. I also changed the stepper motor by a servo.

      To watch my video, access this link: http://youtu.be/zD-wKD19_8U
      If you do not feel comfortable in accessing the link above for security reason,
      please try look for "Arduino, IR and Encoder controlling Magnetic Loop Antenna
      Tuner" on Youtube page.

      Little by little I am improving the documentation (schematic, source code and
      text) to share it to everybody.

      73.
      PU2CLR,
      Ricardo.
    • Sid Boyce
      Thanks Ricardo, I have got all the bits together but have not yet got around to building the controller. When the weather improves I ll put my 13 diameter
      Message 2 of 10 , Mar 20, 2013
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        Thanks Ricardo,
        I have got all the bits together but have not yet got around to building the controller.

        When the weather improves I'll put my 13' diameter loop up again, this time hopefully to withstand 100+ MPH winds.
        I am thinking of placing the large and heavy vacuum capacitor at the bottom of the loop to lighten the wind loading.
        73 ... Sid.

        On 20/03/13 20:57, pu2clr wrote:
         

        Hello everybody,

        I would like to share the new version of my Antenna Tuner project.

        Who enjoy QRP and liked the video "Magnetic Loop Antenna controlled by Arduino
        and infrared", will appreciate my last one.

        Now I inserted an encoder to increase the possibilities to handle the antenna
        tuner. I also changed the stepper motor by a servo.

        To watch my video, access this link: http://youtu.be/zD-wKD19_8U
        If you do not feel comfortable in accessing the link above for security reason,
        please try look for "Arduino, IR and Encoder controlling Magnetic Loop Antenna
        Tuner" on Youtube page.

        Little by little I am improving the documentation (schematic, source code and
        text) to share it to everybody.

        73.
        PU2CLR,
        Ricardo.



        -- 
        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
        
      • pu2clr
        Hi Sid. Yes, Undoubtedly a Vacuum capacitor is the best choice for this kind of Antenna. Keep me posted about your project. 73.
        Message 3 of 10 , Mar 26, 2013
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          Hi Sid.
          Yes, Undoubtedly a Vacuum capacitor is the best choice for this kind of Antenna.

          Keep me posted about your project.

          73.

          --- In softrock40@yahoogroups.com, Sid Boyce <sboyce@...> wrote:
          >
          > Thanks Ricardo,
          > I have got all the bits together but have not yet got around to building
          > the controller.
          >
          > When the weather improves I'll put my 13' diameter loop up again, this
          > time hopefully to withstand 100+ MPH winds.
          > I am thinking of placing the large and heavy vacuum capacitor at the
          > bottom of the loop to lighten the wind loading.
          > 73 ... Sid.
          >
          > On 20/03/13 20:57, pu2clr wrote:
          > >
          > > Hello everybody,
          > >
          > > I would like to share the new version of my Antenna Tuner project.
          > >
          > > Who enjoy QRP and liked the video "Magnetic Loop Antenna controlled by
          > > Arduino
          > > and infrared", will appreciate my last one.
          > >
          > > Now I inserted an encoder to increase the possibilities to handle the
          > > antenna
          > > tuner. I also changed the stepper motor by a servo.
          > >
          > > To watch my video, access this link: http://youtu.be/zD-wKD19_8U
          > > If you do not feel comfortable in accessing the link above for
          > > security reason,
          > > please try look for "Arduino, IR and Encoder controlling Magnetic Loop
          > > Antenna
          > > Tuner" on Youtube page.
          > >
          > > Little by little I am improving the documentation (schematic, source
          > > code and
          > > text) to share it to everybody.
          > >
          > > 73.
          > > PU2CLR,
          > > Ricardo.
          > >
          > >
          >
          >
          > --
          > 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
          >
        • pu2clr
          Hi Sid, and everybody. Last week I posted a video on youtube about my home-brew Antenna Tuner - Arduino, IR and Encoder controlling Magnetic Loop Antenna
          Message 4 of 10 , Mar 26, 2013
          • 0 Attachment
            Hi Sid, and everybody.

            Last week I posted a video on youtube about my home-brew Antenna Tuner -
            "Arduino, IR and Encoder controlling Magnetic Loop Antenna Tuner"

            Yesterday I posted another video showing this system working (QSO with Magnetic
            Loop Antenna).

            The first QSO is with EA2ACK, Jose, Cadrete (ZARAGOZA), Spain, 4964 mil (7990km)
            away from my city (Brasília/Brazil).

            The second QSO is with PU5DUD, Renato, Blumenal, Santa Catarina, Brazil, 451 mil
            (727 km) away from Brasilia.

            I used a FT817ND with 5 Watts.

            I would like to share with you my last video on my Youtube channel.

            The link to my youtube channel is:
            https://www.youtube.com/user/pu2clr/videos?view=0&flow=grid


            The link to my last video is: https://www.youtube.com/watch?v=ylhLfB0XhZU

            The link about Antenna Tuner assembly is:
            https://www.youtube.com/watch?v=zD-wKD19_8U

            You can also look for PU2CLR on Youtube web page.

            73.
            PU2CLR.
            Ricardo.
          • Sid Boyce
            OK Ricardo, Quite a few years ago vacuum capacitors were a reasonable price at ham radio rallies so I bought 2. The latest 10KV one I got about 3 years ago
            Message 5 of 10 , Mar 26, 2013
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              OK Ricardo,
              Quite a few years ago vacuum capacitors were a reasonable price at ham radio rallies so I bought 2.

              The latest 10KV one I got about 3 years ago from http://www.mgs4u.com/RF-Microwave/vacuum-variable-capacitors-1000.htm

              The one that smashed was Jennings UCSL-1000-3D345 which now costs $239.00 and I got mine at a rally for ~£20.00 UK.
              73 ... Sid.


              On 26/03/13 21:42, pu2clr wrote:
               

              Hi Sid.
              Yes, Undoubtedly a Vacuum capacitor is the best choice for this kind of Antenna.

              Keep me posted about your project.

              73.

              --- In softrock40@yahoogroups.com, Sid Boyce <sboyce@...> wrote:
              >
              > Thanks Ricardo,
              > I have got all the bits together but have not yet got around to building
              > the controller.
              >
              > When the weather improves I'll put my 13' diameter loop up again, this
              > time hopefully to withstand 100+ MPH winds.
              > I am thinking of placing the large and heavy vacuum capacitor at the
              > bottom of the loop to lighten the wind loading.
              > 73 ... Sid.
              >
              > On 20/03/13 20:57, pu2clr wrote:
              > >
              > > Hello everybody,
              > >
              > > I would like to share the new version of my Antenna Tuner project.
              > >
              > > Who enjoy QRP and liked the video "Magnetic Loop Antenna controlled by
              > > Arduino
              > > and infrared", will appreciate my last one.
              > >
              > > Now I inserted an encoder to increase the possibilities to handle the
              > > antenna
              > > tuner. I also changed the stepper motor by a servo.
              > >
              > > To watch my video, access this link: http://youtu.be/zD-wKD19_8U
              > > If you do not feel comfortable in accessing the link above for
              > > security reason,
              > > please try look for "Arduino, IR and Encoder controlling Magnetic Loop
              > > Antenna
              > > Tuner" on Youtube page.
              > >
              > > Little by little I am improving the documentation (schematic, source
              > > code and
              > > text) to share it to everybody.
              > >
              > > 73.
              > > PU2CLR,
              > > Ricardo.
              > >
              > >
              >
              >
              > --
              > 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
              >



              -- 
              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
              
            • Sid Boyce
              Excellent Ricardo, I have tried to get other guys with limited space or ordinance restrictions to try a magnetic loop but it proves impossible. Even a simple
              Message 6 of 10 , Mar 26, 2013
              • 0 Attachment
                Excellent Ricardo,
                I have tried to get other guys with limited space or ordinance restrictions to try a magnetic loop but it proves impossible.

                Even a simple loop made of aluminium curtain rod and any variable capacitor will work, especially for RX, but for TX a wider spaced capacitor is needed.

                The WX is not too good for antenna work at the moment. My 13' diameter loop is under about 6 inches of snow on the ground.
                When the WX is better, I'll work on it. I have a large angled bracket which I'll embed in concrete to  support the pole and secure with U-bolts.

                I'll have to get to work on the Arduino and IR remote soon.
                73 ... Sid.

                On 26/03/13 21:44, pu2clr wrote:
                 

                Hi Sid, and everybody.

                Last week I posted a video on youtube about my home-brew Antenna Tuner -
                "Arduino, IR and Encoder controlling Magnetic Loop Antenna Tuner"

                Yesterday I posted another video showing this system working (QSO with Magnetic
                Loop Antenna).

                The first QSO is with EA2ACK, Jose, Cadrete (ZARAGOZA), Spain, 4964 mil (7990km)
                away from my city (Brasília/Brazil).

                The second QSO is with PU5DUD, Renato, Blumenal, Santa Catarina, Brazil, 451 mil
                (727 km) away from Brasilia.

                I used a FT817ND with 5 Watts.

                I would like to share with you my last video on my Youtube channel.

                The link to my youtube channel is:
                https://www.youtube.com/user/pu2clr/videos?view=0&flow=grid

                The link to my last video is: https://www.youtube.com/watch?v=ylhLfB0XhZU

                The link about Antenna Tuner assembly is:
                https://www.youtube.com/watch?v=zD-wKD19_8U

                You can also look for PU2CLR on Youtube web page.

                73.
                PU2CLR.
                Ricardo.



                -- 
                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
                
              • pu2clr
                Hello. Sid, working with Softrock SDR and antenna loop can be nice on 15,12 and 10 meters. But on 20, 40 and 80, depending what you want, this antenna may not
                Message 7 of 10 , Mar 27, 2013
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                  Hello.

                  Sid, working with Softrock SDR and antenna loop can be nice on 15,12 and 10 meters.
                  But on 20, 40 and 80, depending what you want, this antenna may not be appropriate because the bandwidth becomes very narrower. In this case, you lose some visibility in the spectrum in adjacent frequencies.

                  Check this using programs calculating magnetic loop antennas.

                  73.
                  PU2CLR.
                  Ricardo.


                  --- In softrock40@yahoogroups.com, Sid Boyce <sboyce@...> wrote:
                  >
                  > Excellent Ricardo,
                  > I have tried to get other guys with limited space or ordinance
                  > restrictions to try a magnetic loop but it proves impossible.
                  >
                  > Even a simple loop made of aluminium curtain rod and any variable
                  > capacitor will work, especially for RX, but for TX a wider spaced
                  > capacitor is needed.
                  >
                  > The WX is not too good for antenna work at the moment. My 13' diameter
                  > loop is under about 6 inches of snow on the ground.
                  > When the WX is better, I'll work on it. I have a large angled bracket
                  > which I'll embed in concrete to support the pole and secure with U-bolts.
                  >
                  > I'll have to get to work on the Arduino and IR remote soon.
                  > 73 ... Sid.
                  >
                  > On 26/03/13 21:44, pu2clr wrote:
                  > >
                  > > Hi Sid, and everybody.
                  > >
                  > > Last week I posted a video on youtube about my home-brew Antenna Tuner -
                  > > "Arduino, IR and Encoder controlling Magnetic Loop Antenna Tuner"
                  > >
                  > > Yesterday I posted another video showing this system working (QSO with
                  > > Magnetic
                  > > Loop Antenna).
                  > >
                  > > The first QSO is with EA2ACK, Jose, Cadrete (ZARAGOZA), Spain, 4964
                  > > mil (7990km)
                  > > away from my city (Brasília/Brazil).
                  > >
                  > > The second QSO is with PU5DUD, Renato, Blumenal, Santa Catarina,
                  > > Brazil, 451 mil
                  > > (727 km) away from Brasilia.
                  > >
                  > > I used a FT817ND with 5 Watts.
                  > >
                  > > I would like to share with you my last video on my Youtube channel.
                  > >
                  > > The link to my youtube channel is:
                  > > https://www.youtube.com/user/pu2clr/videos?view=0&flow=grid
                  > >
                  > > The link to my last video is: https://www.youtube.com/watch?v=ylhLfB0XhZU
                  > >
                  > > The link about Antenna Tuner assembly is:
                  > > https://www.youtube.com/watch?v=zD-wKD19_8U
                  > >
                  > > You can also look for PU2CLR on Youtube web page.
                  > >
                  > > 73.
                  > > PU2CLR.
                  > > Ricardo.
                  > >
                  > >
                  >
                  >
                  > --
                  > 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
                  >
                • pu2clr
                  Yes Sid, It is really expensive. I found some vaccum capacitors (5-100pF) on eBay costing $70 plus $40 for shipping to Brazil. 73. PU2CLR. Ricardo.
                  Message 8 of 10 , Mar 27, 2013
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                    Yes Sid,
                    It is really expensive.
                    I found some vaccum capacitors (5-100pF) on eBay costing $70 plus $40 for shipping to Brazil.

                    73. PU2CLR.
                    Ricardo.



                    --- In softrock40@yahoogroups.com, Sid Boyce <sboyce@...> wrote:
                    >
                    > OK Ricardo,
                    > Quite a few years ago vacuum capacitors were a reasonable price at ham
                    > radio rallies so I bought 2.
                    >
                    > The latest 10KV one I got about 3 years ago from
                    > http://www.mgs4u.com/RF-Microwave/vacuum-variable-capacitors-1000.htm
                    >
                    > The one that smashed was Jennings UCSL-1000-3D345 which now costs
                    > $239.00 and I got mine at a rally for ~£20.00 UK.
                    > 73 ... Sid.
                    >
                    >
                    > On 26/03/13 21:42, pu2clr wrote:
                    > >
                    > > Hi Sid.
                    > > Yes, Undoubtedly a Vacuum capacitor is the best choice for this kind
                    > > of Antenna.
                    > >
                    > > Keep me posted about your project.
                    > >
                    > > 73.
                    > >
                    > > --- In softrock40@yahoogroups.com
                    > > <mailto:softrock40%40yahoogroups.com>, Sid Boyce <sboyce@> wrote:
                    > > >
                    > > > Thanks Ricardo,
                    > > > I have got all the bits together but have not yet got around to
                    > > building
                    > > > the controller.
                    > > >
                    > > > When the weather improves I'll put my 13' diameter loop up again, this
                    > > > time hopefully to withstand 100+ MPH winds.
                    > > > I am thinking of placing the large and heavy vacuum capacitor at the
                    > > > bottom of the loop to lighten the wind loading.
                    > > > 73 ... Sid.
                    > > >
                    > > > On 20/03/13 20:57, pu2clr wrote:
                    > > > >
                    > > > > Hello everybody,
                    > > > >
                    > > > > I would like to share the new version of my Antenna Tuner project.
                    > > > >
                    > > > > Who enjoy QRP and liked the video "Magnetic Loop Antenna
                    > > controlled by
                    > > > > Arduino
                    > > > > and infrared", will appreciate my last one.
                    > > > >
                    > > > > Now I inserted an encoder to increase the possibilities to handle the
                    > > > > antenna
                    > > > > tuner. I also changed the stepper motor by a servo.
                    > > > >
                    > > > > To watch my video, access this link: http://youtu.be/zD-wKD19_8U
                    > > > > If you do not feel comfortable in accessing the link above for
                    > > > > security reason,
                    > > > > please try look for "Arduino, IR and Encoder controlling Magnetic
                    > > Loop
                    > > > > Antenna
                    > > > > Tuner" on Youtube page.
                    > > > >
                    > > > > Little by little I am improving the documentation (schematic, source
                    > > > > code and
                    > > > > text) to share it to everybody.
                    > > > >
                    > > > > 73.
                    > > > > PU2CLR,
                    > > > > Ricardo.
                    > > > >
                    > > > >
                    > > >
                    > > >
                    > > > --
                    > > > 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
                    > > >
                    > >
                    > >
                    >
                    >
                    > --
                    > 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
                    >
                  • Sid Boyce
                    Thanks Ricardo, Of course the bandwidth of a magnetic loop is very narrow as it acts as a hi-q tuned circuit. I ll check it out. 73 ... Sid. ... -- Sid Boyce
                    Message 9 of 10 , Mar 27, 2013
                    • 0 Attachment
                      Thanks Ricardo,
                      Of course the bandwidth of a magnetic loop is very narrow as it acts as a hi-q tuned circuit.

                      I'll check it out.
                      73 ... Sid.

                      On 27/03/13 12:07, pu2clr wrote:
                       

                      Hello.

                      Sid, working with Softrock SDR and antenna loop can be nice on 15,12 and 10 meters.
                      But on 20, 40 and 80, depending what you want, this antenna may not be appropriate because the bandwidth becomes very narrower. In this case, you lose some visibility in the spectrum in adjacent frequencies.

                      Check this using programs calculating magnetic loop antennas.

                      73.
                      PU2CLR.
                      Ricardo.

                      --- In softrock40@yahoogroups.com, Sid Boyce <sboyce@...> wrote:
                      >
                      > Excellent Ricardo,
                      > I have tried to get other guys with limited space or ordinance
                      > restrictions to try a magnetic loop but it proves impossible.
                      >
                      > Even a simple loop made of aluminium curtain rod and any variable
                      > capacitor will work, especially for RX, but for TX a wider spaced
                      > capacitor is needed.
                      >
                      > The WX is not too good for antenna work at the moment. My 13' diameter
                      > loop is under about 6 inches of snow on the ground.
                      > When the WX is better, I'll work on it. I have a large angled bracket
                      > which I'll embed in concrete to support the pole and secure with U-bolts.
                      >
                      > I'll have to get to work on the Arduino and IR remote soon.
                      > 73 ... Sid.
                      >
                      > On 26/03/13 21:44, pu2clr wrote:
                      > >
                      > > Hi Sid, and everybody.
                      > >
                      > > Last week I posted a video on youtube about my home-brew Antenna Tuner -
                      > > "Arduino, IR and Encoder controlling Magnetic Loop Antenna Tuner"
                      > >
                      > > Yesterday I posted another video showing this system working (QSO with
                      > > Magnetic
                      > > Loop Antenna).
                      > >
                      > > The first QSO is with EA2ACK, Jose, Cadrete (ZARAGOZA), Spain, 4964
                      > > mil (7990km)
                      > > away from my city (Brasília/Brazil).
                      > >
                      > > The second QSO is with PU5DUD, Renato, Blumenal, Santa Catarina,
                      > > Brazil, 451 mil
                      > > (727 km) away from Brasilia.
                      > >
                      > > I used a FT817ND with 5 Watts.
                      > >
                      > > I would like to share with you my last video on my Youtube channel.
                      > >
                      > > The link to my youtube channel is:
                      > > https://www.youtube.com/user/pu2clr/videos?view=0&flow=grid
                      > >
                      > > The link to my last video is: https://www.youtube.com/watch?v=ylhLfB0XhZU
                      > >
                      > > The link about Antenna Tuner assembly is:
                      > > https://www.youtube.com/watch?v=zD-wKD19_8U
                      > >
                      > > You can also look for PU2CLR on Youtube web page.
                      > >
                      > > 73.
                      > > PU2CLR.
                      > > Ricardo.
                      > >
                      > >
                      >
                      >



                      -- 
                      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
                      
                    • Sid Boyce
                      Both vacuum capacitors and vacuum relays are very expensive and luckily I got them while they were going cheap as ex-equipment items. In my higher powered PA s
                      Message 10 of 10 , Mar 27, 2013
                      • 0 Attachment
                        Both vacuum capacitors and vacuum relays are very expensive and luckily I got them while they were going cheap as ex-equipment items.

                        In my higher powered PA's AN762 and EB104 I use vacuum relays.
                        73 ... Sid.

                        On 27/03/13 12:13, pu2clr wrote:
                         

                        Yes Sid,
                        It is really expensive.
                        I found some vaccum capacitors (5-100pF) on eBay costing $70 plus $40 for shipping to Brazil.

                        73. PU2CLR.
                        Ricardo.

                        --- In softrock40@yahoogroups.com, Sid Boyce <sboyce@...> wrote:
                        >
                        > OK Ricardo,
                        > Quite a few years ago vacuum capacitors were a reasonable price at ham
                        > radio rallies so I bought 2.
                        >
                        > The latest 10KV one I got about 3 years ago from
                        > http://www.mgs4u.com/RF-Microwave/vacuum-variable-capacitors-1000.htm
                        >
                        > The one that smashed was Jennings UCSL-1000-3D345 which now costs
                        > $239.00 and I got mine at a rally for ~£20.00 UK.
                        > 73 ... Sid.
                        >
                        >
                        > On 26/03/13 21:42, pu2clr wrote:
                        > >
                        > > Hi Sid.
                        > > Yes, Undoubtedly a Vacuum capacitor is the best choice for this kind
                        > > of Antenna.
                        > >
                        > > Keep me posted about your project.
                        > >
                        > > 73.
                        > >
                        > > --- In softrock40@yahoogroups.com
                        > > <mailto:softrock40%40yahoogroups.com>, Sid Boyce <sboyce@> wrote:
                        > > >
                        > > > Thanks Ricardo,
                        > > > I have got all the bits together but have not yet got around to
                        > > building
                        > > > the controller.
                        > > >
                        > > > When the weather improves I'll put my 13' diameter loop up again, this
                        > > > time hopefully to withstand 100+ MPH winds.
                        > > > I am thinking of placing the large and heavy vacuum capacitor at the
                        > > > bottom of the loop to lighten the wind loading.
                        > > > 73 ... Sid.
                        > > >
                        > > > On 20/03/13 20:57, pu2clr wrote:
                        > > > >
                        > > > > Hello everybody,
                        > > > >
                        > > > > I would like to share the new version of my Antenna Tuner project.
                        > > > >
                        > > > > Who enjoy QRP and liked the video "Magnetic Loop Antenna
                        > > controlled by
                        > > > > Arduino
                        > > > > and infrared", will appreciate my last one.
                        > > > >
                        > > > > Now I inserted an encoder to increase the possibilities to handle the
                        > > > > antenna
                        > > > > tuner. I also changed the stepper motor by a servo.
                        > > > >
                        > > > > To watch my video, access this link: http://youtu.be/zD-wKD19_8U
                        > > > > If you do not feel comfortable in accessing the link above for
                        > > > > security reason,
                        > > > > please try look for "Arduino, IR and Encoder controlling Magnetic
                        > > Loop
                        > > > > Antenna
                        > > > > Tuner" on Youtube page.
                        > > > >
                        > > > > Little by little I am improving the documentation (schematic, source
                        > > > > code and
                        > > > > text) to share it to everybody.
                        > > > >
                        > > > > 73.
                        > > > > PU2CLR,
                        > > > > Ricardo.
                        > > > >
                        > > > >
                        > > >
                        > > >



                        -- 
                        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
                        
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