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<p class=MsoNormal><span lang=EN-US>Hi,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>It’s always a great satisfaction when
one raises a cheer for his developments, especially when it comes from the
competition. The German ham magazine CQ-DL published in the March issue a
review of the Hilberling LDMOS amp HPA-8000B written by the European Flex Radio
rep Klaus, DK7XL. A longer section of this article informs about OpenHPSDR, the
developers and the wonderful capabilities of Pure Signal. Together with
HERMES the HPA-8000B could be linearized up to an IMD3 level of -62dBc@1 KW PEP
and 3.7 Mhz. A reprint of Hans’ DL2MDQ fine paper about IM behavior of
cascaded amplifiers is also part of this review.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>The quintessence of this review is: You can
ONLY enjoy the full flavor of this amp, when your exciter is able to employ adaptive
predistortion.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Thanks Klaus for promotion.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>73, Helmut, DC6NY<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
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