CQ18T Mixer RF Noise

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This topic contains 5 replies, has 5 voices, and was last updated by Profile photo of Brian Brian 5 months, 3 weeks ago.

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    Profile photo of Jim J
    Jim J

    When I turn the mixer on, I am getting noise into my microphones. Here is a video to explain: https://youtu.be/3J8gQ4h3JYg

    I hope someone can help.

    Profile photo of robbocurry

    I use a similar setup but on GB band – not seeing anything like that but background RF is part & parcel of the world we live in:(

    I see your two mics are (obviously) tuned differently but suggest retuning a bit to see if you can find a clearer patch and subsequent harmonic?

    What are your squelch settings?

    You have a lot of metal there, have you tried it with the antennae directly on the back of the receivers or everything separately out of the rack to see if that makes a difference?

    In practical use once your mics are switched on this won’t be an issue – I never leave any radio receiver unmuted or slider up if it’s linked TX isn’t switched on.

    E band here in the UK can get hit by bursts from mobile phone towers. This caused a bit of mayhem during a funeral at a local church. They didn’t have anyone doing sound and often left their faders up all the time. They don’t do that anymore 😉!

    Profile photo of ATW

    I have a similar problem with Sennheiser UHF and GX4816 combination… The fault is switching power supply in DX.. I need to have min. 30 cm/1 feet distance from it…

    Profile photo of Jim J
    Jim J

    So can you explain how you fixed it? Are you saying move the power plug 1ft away?

    Profile photo of SteffenR

    No, he moved the PSU of the DX from the receiver away.

    Profile photo of Brian

    He is suggesting that you separate the wireless receivers from the internal power supply of the CQ-20 to see if that solves the problem. It worked for him, but he was using a DX stagebox instead of the CQ console.

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