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Thread: Re-tuning LO of LNBF

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    Default Re-tuning LO of LNBF

    Has anybody had any experience with this?

    Curious to see if I can pick up anything on H 8/9, so would need to get a ka-band lnb and retune the LO to go down to 18.1 GHz, the lowest one I can find is a inverto which has an lo at 19.7 GHz.

    Like in theory I know what needs to happen you open it up connect it to a oscilloscope start tuning it.

    Just wondering if anybody has ever done anything like this.



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    LNBF's are fixed... not adjustable.

    Even if you were able to alter the tuning, the physical antenna sizes are different between Ku and Ka bands.

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    Ham radio ops have moved the freq of some KU LNB’s by grinding the DRO puck inside to get them to RX 10 GHz band.
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    I'll be buying a ka-band LNB and retuning it so the input range is lower. Not doing a ku to ka conversion.

    Hmm if grinding the puck works for ku I wonder if I can do the same with ka

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    Quote Originally Posted by nullb View Post
    I'll be buying a ka-band LNB and retuning it so the input range is lower.
    How will you do that?

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    Buying the ka-band LNBF? They're on ebay

    Returning not sure that's why I asked here, I thought I could just open it up and retune it using the screw, saw a few YouTube videos that seemed to indicate that's what it's there for.

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    Quote Originally Posted by nullb View Post
    Buying the ka-band LNBF? They're on ebay

    Returning not sure that's why I asked here, I thought I could just open it up and retune it using the screw, saw a few YouTube videos that seemed to indicate that's what it's there for.
    Link?
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    I have done it but its hard to get the freq correct by setting the dro screw to a received signal on the down converted tuner

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