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Is there a minimum drive level for PGXL?

K4QXX
K4QXX Member ✭✭
in Power Genius XL Amplifier

I have been playing around with a Hermes Lite 2 and would like to hook it up to my PGXL. I used to use a Flex-1500 with a Ten Tec Titan amp years ago and with 5 watts in, I could get 250-350 watts output according to what band I was on. I am hoping to do the same thing with the Hermes Lite.


Thanks,

Burch

K4QXX

Comments

  • K4QXX
    K4QXX Member ✭✭

    I am running the PGXL on 220 in the shack.

  • Mike-VA3MW
    Mike-VA3MW Administrator, FlexRadio Employee, Community Manager, Super Elmer, Moderator admin
    edited June 2023

    You can give it a try and see how it works.

    You will be limited to 15db of gain though thanks to FCC restrictions. So, 5 watts in should get you about 150 to 200 watts off the top of my head.

    73

  • Larry _ NY8T
    Larry _ NY8T Member ✭✭✭

    I see 275 watts with 5 watts drive.

  • Mike-VA3MW
    Mike-VA3MW Administrator, FlexRadio Employee, Community Manager, Super Elmer, Moderator admin

    @Larry _ NY8T

    That doesn’t seem correct. Is this into a dummy load?

    10db gain should be 50 watts out

    add another 6db, so that should give you 50 x 2 x 2 which is about 200 watts out.

    So, for 15db gain you should be just less than 200 watts, which the PGXL is clamped at for US Customers.

    I would be curious to know more about your test setup.

    73

  • Larry _ NY8T
    Larry _ NY8T Member ✭✭✭

    Recheck with dummy load on 10 meter band.


    5 watts.JPG


  • Mike-VA3MW
    Mike-VA3MW Administrator, FlexRadio Employee, Community Manager, Super Elmer, Moderator admin

    The 15db is calculated at the Power/SWR bridge in the PGXL. That looks about correct. :)

  • Bill WW5M
    Bill WW5M Member ✭✭

    I run 5 watts on FT8 with 6600 driving my PGXL to about 100 to 120 out . It does help

    keep 6600 running cooler especially when running 2- band FT8.


    73 de Bill WW5M

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