Wireless Frequency/Country??? at DVinfo.net
DV Info Net

Go Back   DV Info Net > The Tools of DV and HD Production > All Things Audio

All Things Audio
Everything Audio, from acquisition to postproduction.

Reply
 
Thread Tools Search this Thread
Old September 3rd, 2009, 02:57 PM   #1
Major Player
 
Join Date: May 2007
Location: KLD, South Africa
Posts: 983
Wireless Frequency/Country???

I am planning on buying a wireless mic from B&H soon and was wondering if anyone might know what the legal frequency for wireless mic's in South Africa is? I've Googled my eyes out, I can't find a clear cut answer, even the professionals I've talked to don't care, they say buy any frequency which makes me question how professional they are.

I'm looking at the Shure PGX handheld series.
Guidelines for Fifa 2010 by ICASA says:

Quote:
Radio Microphones
36.65 - 36.75 MHz
40.65 - 40.7 MHz
53 - 54 MHz
173.965 - 174.015 MHz
402 - 406 MHz
863 - 865 MHz

Wireless microphones working in the 1800MHz band are not allowed.
Numerous online retailers locally are selling the Shure PGX at 18MHz. Does it really matter which frequency I buy? Is 524 - 542MHz the same as 53-54Mhz? Thanks!
Nicholas de Kock is offline   Reply With Quote
Old September 3rd, 2009, 03:40 PM   #2
Inner Circle
 
Join Date: Mar 2005
Location: Hamilton, Ontario, Canada
Posts: 5,742
Quote:
Originally Posted by Nicholas de Kock View Post
I am planning on buying a wireless mic from B&H soon and was wondering if anyone might know what the legal frequency for wireless mic's in South Africa is?

Numerous online retailers locally are selling the Shure PGX at 18MHz. Does it really matter which frequency I buy? Is 524 - 542MHz the same as 53-54Mhz? Thanks!
Don't know anything about what is or is not legal in South Africa but just in answer to your last question, 50 megahertz is not even close to the same thing as 500 megahertz. 50MHz is a low-band VHF band, situated between the HF shortwave bands (1.6 MHz ~30 MHz) and the commercial FM VHF broadcast band (87.5 ~ 108 MHz). Nothing in those bands is even close to what wireless mics operate on, at least not any current generation mics I'm aware of. There used to be some consumer mics, toys, and some very early cordless telephones in the 35 ~ 55 MHz area but I haven't seen any of them in years. 18 megahertz is international broadcasting / ham radio / military in the HF shortwave band, again not close to what any current generation wireless mics operate on that I know of.

Looking at the FIFA document you referenced I've got a suspicion that they just copied the frequency allocations from the applicable government publications and those lower 3 frequncy bands listed are just hold-overs remaining in the law from times long gone.

VHF mics such as those operating in the range you listed 173.965 to 174.015 work okay but are usually of limited range and tend to offer a lesser sound quality and are susceptible to interference. You'd expect to find current generation pro quality mics operating in the top two UHF frequency bands you listed..

I wonder if you've misinterpreted some of the specs from those dealers. Shure says the PGX receivers give you a choice of operating frequencies across an 18 MHz bandwidth. That's not the same this as operating on the 18 MHz band. 524 MHz to 542 MHz is a spread of 18 MHz, or expressed another way, an 18 MHz operating bandwidth.

As far as getting specific info on what is legal, why not just ring up ICASA and ask them? They're the ones that enforce it, they HAVE to know.
__________________
Good news, Cousins! This week's chocolate ration is 15 grams!
Steve House is offline   Reply With Quote
Old September 4th, 2009, 03:40 AM   #3
Major Player
 
Join Date: May 2007
Location: KLD, South Africa
Posts: 983
Steve thanks that clears up a lot of my questions!
Nicholas de Kock is offline   Reply With Quote
Old September 6th, 2009, 11:06 AM   #4
Major Player
 
Join Date: Oct 2008
Location: Oxfordshire, UK
Posts: 976
Quote:
Originally Posted by Nicholas de Kock View Post
I am planning on buying a wireless mic from B&H soon and was wondering if anyone might know what the legal frequency for wireless mic's in South Africa is?
Talk to Sennheiser South Africa - they are bound to know what is legal in their own country.
__________________
John Willett - Sound-Link ProAudio and Circle Sound Services
President: Fédération Internationale des Chasseurs de Sons
John Willett is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

B&H Photo Video
(866) 521-7381
New York, NY USA

Scan Computers Int. Ltd.
+44 0871-472-4747
Bolton, Lancashire UK


DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > The Tools of DV and HD Production > All Things Audio

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



All times are GMT -6. The time now is 06:24 PM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2024 The Digital Video Information Network