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630 meters with a Flex 6400 and njdtechnologies amp?

Gary L. Robinson
Gary L. Robinson Member ✭✭
edited December 2017 in FLEX-6000 Signature Series
Any reason this amp might not work with a Flex 6400 via transverter port ?    

https://wg2xka.files.wordpress.com/2013/01/njdtechnologies-630m-amp.pdf


Answers

  • Tim - W4TME
    Tim - W4TME Administrator, FlexRadio Employee admin
    edited November 2017
    For your question, there isn't a lot of detailed specs, but I assume that the exciter input frequency is in the 630m band.  It should work.

    If using the XVTR port as the low drive output, there is no output filtering on that port.  So to keep spurious emissions within spec, you should use a bandpass filter designed for the center frequency of the TX output to ensure the exciter is provided spectrally clean RF to the amp.
  • Mike W9OJ
    Mike W9OJ Member ✭✭
    edited December 2017
    Here's what he says on his webpage: http://njdtechnologies.net/630-meter-class-de-amplifier/


    630-meter non-linear amplifier
    NOTE:  I can no longer produce these amplifiers for sale due to the “15 dB rule” under Part-97 now that the Report and Order has been issued for 630-meters.  Parts are available from Mouser and my notes are included below.  If you are not a builder, don’t worry as someone will take advantage of the opportunity to design an amp that meets the 15 dB requirement in the very near future.

    We'll need a lot more than 15db of help for the transverter output to get a decent signal.

    73 de Mike W9OJ



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