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Microwave Video Transmitters


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#1 David Mickler

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Posted 08 September 2008 - 03:01 AM

Hey Guys,

I work a lot on reality and documentary shoots where microwave transmitters are used commonly for DPs and producers to watch and oftentimes comment or micromanage.

My question is: ARE THE TRANSMITTERS SAFE?

I worry that continuous exposure may increase medical risks like cancers.

David

Edited by David Mickler, 08 September 2008 - 03:02 AM.

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#2 Phil Rhodes

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Posted 08 September 2008 - 04:30 AM

Microwave RF is non-ionising radiation, that is, there is not enough energy in the quantum packets involved to knock electrons off atoms, so it can't (on paper) cause the DNA damage that promotes cancer. Theoretically, the worst damage it can do is burn you, in exactly the same way infra-red energy can burn you, and nothing you can strap on a camera has a tenth the required output to do that.

However, there are occupational health limits on exposure. It's subject to many of the same considerations given cellphone use, which are mainly pretty speculative and are concerned with thermal effects and low-frequency modulation of a high-frequency carrier. Most of the preview links you can get are FM modulated in the C band and will contain a pronounced 50 or 60Hz component. How seriously you want to take this depends on... how seriously you want to take it.

P
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#3 Mitch Gross

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Posted 08 September 2008 - 08:55 AM

Are you sure they're really using microwave transmitters and not RF like a Modulus or CanaTrans? These are far more common. No danger here as these are essentially little television broadcast transmitters, unless you consider getting busted by the FCC a danger.
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Aerial Filmworks

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Media Blackout - Custom Cables and AKS

Glidecam

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