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Kathy Lee
buying wireless transmitters/receivers
on Jun 25, 2011 at 9:19:44 pm

Hi,

I'd like to buy a couple of wireless mics, but I had a question. I'm looking at the sennheiser ew100 series tx/rx and notice that it says either A, B or G frequency... what exactly does that mean? If I buy a pair, should they be the same?

Thanks much for your help.


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Stephen Hall
Re: buying wireless transmitters/receivers
on Jun 26, 2011 at 4:51:56 am

Kathy, as our distinguished host Ty Ford says, "Welcome to Creative Cow."

The A,B,G "blocks" with Sennheiser wireless gear indicate the frequency range that each supports. I would recommend buying a wireless set (transmitter, matching receiver and lav mic) from one of the reputable vendors like DVestore, B&H Photo/Video, Trew Audio or other established folks.

Which "block" to buy might depend on your location. These systems operate in parts of the spectrum used by other radio sources. There are a number of discrete frequencies within a "block" to which you can tune the set (transmitter and receiver must be tuned to the same frequency). I have Sennheiser sets in both A & B ranges and was glad I did when shooting very close to a monster TV transmitter that rendered one entire block useless. That last is very unusual. I've used both A & B sets simultaneously all over the Seattle metro area without trouble.

To research the frequency allocations ( to commercial and broadcast transmitters ) in your area, you might start with Lectrosonics' great TV channel table: http://www.lectrosonics.com/images/PDFs/tvstationsfrequencyblocks.pdf ( a PDF file ). http://www.lectrosonics.com/ They're another respected wireless manufacturer.

Good luck !

Stephen Hall
http://sound.facesproject.org/


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Ty Ford
Re: buying wireless transmitters/receivers
on Jun 26, 2011 at 12:21:43 pm

To put a finer point on Stephen's good advice.

You can operate more than one wireless mic on a band, A, B or G. The country in which you operate the wireless mic may have restrictions as to which frequencies you are allowed to operate on.

Where are you and where do you intend to operate these mics.

Regards,

Ty Ford
Cow Audio Forum Leader

Want better production audio?: Ty Ford's Audio Bootcamp Field Guide


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André Engelhardt
Re: buying wireless transmitters/receivers
on Jun 26, 2011 at 1:19:48 pm

Another source to cross-check frequencies is Sennheiser's directory:

http://www.sennheiser.com/sennheiser/home_en.nsf/root/professional_wireless...

(Be patient as of now it's loading a bit slow for me, took a while for the country drop-down to show up)

Good luck!

André

--
Audio Engineer, Sound Designer
Videographer
http://www.andreengelhardt.net


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André Engelhardt
Re: buying wireless transmitters/receivers
on Jun 26, 2011 at 1:22:44 pm

Addendum:

Direct url for USA charts: http://www.sennheiserusa.com/findFrequency/?00002

It allows you to enter a city / zip code and a radius and gives you a full list of frequencies.

--
Audio Engineer, Sound Designer
Videographer
http://www.andreengelhardt.net


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Kathy Lee
Re: buying wireless transmitters/receivers
on Jun 28, 2011 at 4:21:10 am

Hi, thanks for your response. I work in NYC and the tri-state area mostly.


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Ty Ford
Re: buying wireless transmitters/receivers
on Jun 28, 2011 at 11:06:14 am

Kathy,

Talk to someone at B&H to find out which of the three bands should work best in the NY area.

Sam Mallery hangs out here from time to time. I'm sure he'd know.

Regards,

Ty Ford
Audio Forum Leader

Want better production audio?: Ty Ford's Audio Bootcamp Field Guide


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