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4 posters

    high power rf amp for low frequency

    johnrobinson
    johnrobinson
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    Posts : 98
    Join date : 2011-06-10

    high power rf amp for low frequency Empty high power rf amp for low frequency

    Post  johnrobinson Fri Nov 23, 2012 4:11 pm

    this is a picture of a RF power amp that i have been building for the last few days it is for transmitting low frequency under water to the sub it will nock out 160 watts of rf that is alot of power i ran it into a dummy load for 3 hours and ran ok the last post was about something on high frequency 10ghz this is the other end of the scale low frequency

    high power rf amp for low frequency Imag0310

    notice from the picture that i have still got to finish the unit off you can also see cpu cooler and they do a brillant job at cooling down componants that produce alot of heat and im afraid it dose

    high power rf amp for low frequency Imag0311

    the unit has been mainly made from scrap bits
    profesorul
    profesorul
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    Posts : 386
    Join date : 2011-07-03
    Age : 59
    Location : Bucuresti, ROMANIA

    high power rf amp for low frequency Empty Re: high power rf amp for low frequency

    Post  profesorul Fri Nov 23, 2012 7:05 pm

    HI,
    The Device it self is going to do WHAT actually?!.

    MARIUS
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    Tom(ADMIN)
    AMS Forum Owner


    Posts : 3026
    Join date : 2010-11-05
    Age : 64
    Location : Nevada, USA

    high power rf amp for low frequency Empty Re: high power rf amp for low frequency

    Post  Tom(ADMIN) Fri Nov 23, 2012 8:03 pm

    John, me old love...what on earth is that? And what the hell does it do?

    Get back to something that we can build, please...you're frightening people off. A nice simple BEC build, together with an explanation of what does what will be ideal, mate.
    johnrobinson
    johnrobinson
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    high power rf amp for low frequency Empty Re: high power rf amp for low frequency

    Post  johnrobinson Sat Nov 24, 2012 6:12 pm

    HI GUYS
    You asked what the RF power amp does the low frequency transmitter that i did for controlling the sub under water this power amp plugs in to that unit and amplifies from 10 watts up to 160 watts this then plugs in to a antenna which is in the water to control the sub, because this is on low frequency it will get through the water a lot better than using 40MHZ. I am trying to keep this as simple as i can and just in case you are wondering why the antenna is in the water where the sub is if the antenna was on the bank side most of the signal would bounce off the surface of the water like skimming pebbles only this would be the RF signal but if you put the antenna in the water then you would cut down on loses. Trying to work out antennas to work under water is quite difficult. Sorry to say chaps if you now can not see what I'm up to then i give up. I'm not trying to scare people off just won't them to see what you can do if you look out side the box
    John
    Giovanni LiCalsi
    Giovanni LiCalsi
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    Age : 73
    Location : Alameda, California, USA

    high power rf amp for low frequency Empty Re: high power rf amp for low frequency

    Post  Giovanni LiCalsi Sun Nov 25, 2012 1:10 am

    I know. I'm listening.

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