Message-ID: <500142FB.7030107@xs4all.nl>
Date: Sat, 14 Jul 2012 11:59:23 +0200
From: Albert <westberg@xs4all.nl>
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References: <2EF69530CC694F89ADDC70851C979A5D@AGB> <015b01cd6139$b9f36a60$1502a8c0@Clemens04> <F99977F5765040E6B711308602D24A30@AGB> <005a01cd6140$928d7e00$1502a8c0@Clemens04> <8026234358FA4AF3B57CC6EB31339FC3@AGB> <002101cd61a2$07c37a60$1502a8c0@Clemens04>
In-Reply-To: <002101cd61a2$07c37a60$1502a8c0@Clemens04>
Subject: Re: LF: Re: DUAL  BEACON   WSPR + OPERA   500Khz
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Clemens,

To my knowledge the PEP of two tones (carriers) is only 6 dB higher than 
one tone. So a (real) linear amplifier suitable for delivering 60 - 100 
watts output can deal with the two 15W carriers without any problem.

73, Albert PA0A



Op 14-7-2012 11:21, Clemens Paul schreef:
> Graham,
> >the  amplifiers  will  produce full  power on 500  , but  with the  
> 50% efficiency , for  single  carrier  modes , >its not  very cost 
> effective !
> On the other hand,if you would use one single linear amp  to TX two 
> 15W carriers (tones in USB)
> it would have to be capable of delivering 900W(!) PEP to stay linear.
> 73
> Clemens
> DL4RAJ
>


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    <div class="moz-cite-prefix">Clemens,<br>
      <br>
      To my knowledge the PEP of two tones (carriers) is only 6 dB
      higher than one tone. So a (real) linear amplifier suitable for
      delivering 60 - 100 watts output can deal with the two 15W
      carriers without any problem.<br>
      <br>
      73, Albert PA0A<br>
      <br>
      &nbsp; &nbsp; <br>
      <br>
      Op 14-7-2012 11:21, Clemens Paul schreef:<br>
    </div>
    <blockquote cite="mid:002101cd61a2$07c37a60$1502a8c0@Clemens04"
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      <div><font face="Arial" size="2">Graham,</font></div>
      <div>&nbsp;</div>
      <div>
        <div>&gt;the&nbsp; amplifiers&nbsp; will&nbsp; produce full&nbsp; power on 500&nbsp; ,
          but&nbsp; with the&nbsp; 50% efficiency , for&nbsp; single&nbsp; carrier&nbsp; modes ,
          &gt;its not&nbsp; very cost effective ! </div>
        <div>&nbsp;</div>
        <div><font face="Arial" size="2">On the other hand,if you would
            use one single linear amp&nbsp; to&nbsp;TX two 15W carriers (tones in
            USB)</font></div>
        <div><font face="Arial" size="2">it would have to be capable
            of&nbsp;delivering 900W(!) PEP to stay linear.</font></div>
        <div>&nbsp;</div>
        <div><font face="Arial" size="2">73<br>
            Clemens<br>
            DL4RAJ</font></div>
        <div>&nbsp;</div>
        <div>&nbsp;</div>
      </div>
      <br>
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