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Discussion in 'Amateur Radio Amplifiers' started by WA4SIX, May 22, 2019.

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  1. WA4SIX

    WA4SIX Ham Member QRZ Page

  2. AH7I

    AH7I Ham Member QRZ Page

    Good for a CW amp.
  3. WA4SIX

    WA4SIX Ham Member QRZ Page

    If I didn't already have my 1.8Ks I might try them.
    Why only CW?

  4. N1OOQ

    N1OOQ Ham Member QRZ Page

    Can't see that any specs are available. They claim it can take SWR of 65:1.
  5. WA4SIX

    WA4SIX Ham Member QRZ Page

    They all claim that, it's due to the duty cycle they use, which is useless in our application.
    I am using 2 1.8K LDMOSs for my HF/6M amp, just to make it last longer than I will.

  6. KA9JLM

    KA9JLM Ham Member QRZ Page

  7. WA4SIX

    WA4SIX Ham Member QRZ Page

    Nope. It's just their teaser. When the 1.8Ks were out as samples, they were about $300. I would expect similar.
    I have 6 of the 1.8Ks.

  8. W5IAC

    W5IAC Ham Member QRZ Page

    My MRFE6VP61K25H amp (1.2kw) chip is chugging along fine after 3 years. I keep the power down to just below 1kw to keep the IMD low.
    WA4SIX likes this.

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