[cr-india] TRAI Open House in Delhi - first impressions

[sajan venniyoor]

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On Sat, 23 Oct 2004 Vickram Crishna wrote :
>I endorse the substance of Arun's recommendations, but suggest a couple of minor additions )interleaved below):
>At 12:41 PM +0530 10/22/04, Arun Mehta wrote:
>>My $0.02 -- figures I could live with -- so that we can quickly send a response to TRAI..
>>  > 5.     Antenna height
>>As allowed by local building laws

SACFA has given fairly extensive guidelines on siting procedure for wireless stations on their website (www.dotindia.com/wpcc/spectrum-home.htm). Apparently, local building laws apply (and mast height clearance is exempted from SACFA clearance) only if the mast and antenna are installed on a rooftop and their height is less than 3 metres (see below). 

Stand alone transmitter towers are covered by other norms. And any radio station with a 100+ watt transmitter comes under the 'Full Siting Category', which sounds quite dire.

Sajan. 

SACFA CLEARANCES
----------------
SACFA clearances are issued after getting  'no objection' from various SACFA members who have to carry out detailed technical evaluation including field surveys, etc. at times they have to obtain evaluations from their field units. The   technical evaluation is done primarily for-

a)	 Aviation hazards.
b)	 Obstruction to line of site of existing/planned networks      
c)	 Interference (Electro Magnetic Interference (EMI)/Electro Magnetic Compatibility (EMC)) to existing and proposed networks. 
        
CATEGORIES OF SITES FOR WIRELESS STATIONS:
                       
Mast Height Category:
       
Sites for HF/VHF/UHF:
		
Those fixed wireless stations whose mast/tower height do not exceed 30 meters above ground level and are operating in certain frequency bands with limited output power as given below are covered under this category:             
        
(a)	All HF stations with power output of 125 watts or less.

(b)  	(i)	All VHF stations below 174 MHz with power output of 50 watts or less except broadcast stations.
       
(ii)	All VHF stations in the frequency range 174-230 MHz with output power up to 25 watts except broadcast stations.
        		
(c)	Broadcasting stations in the band 30 - 230 MHz with an output power output up to 100 watts.
        
(d)	All VHF/ UHF stations below 608 MHz with a power output of 10 watts or less.


# Exemption from Mast Height Clearance:

Sites for HF/VHF/UHF:

Those mast height cases which satisfy the following conditions are exempted from mast height clearance:-

(i)	Antenna mast should be installed on the rooftop of the building.

(ii)	The height of mast including antenna to be installed on the rooftop should not be more than 3 meters.

The site should be at least 3 KM away from the nearest airport.


# Full Siting Category:
        
The following fixed stations are covered under the full siting category:
        
(a)	All HF stations with power output more than 125 watts.

(b) 	(i)	All VHF stations below 174 MHz with power output more 50 watts.
(ii)	All VHF stations in the frequency range 174-230 MHz with power output more than 25 watts.

(c)	Broadcasting stations in the frequency band 30-230 MHz with power output more than 100 watts. 	

(d)	All UHF stations with power output more than 10 watts
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On Sat, 23 Oct 2004 Vickram Crishna wrote :
>I endorse the substance of Arun's recommendations, but suggest a couple of minor additions )interleaved below):
>At 12:41 PM +0530 10/22/04, Arun Mehta wrote:
>>My $0.02 -- figures I could live with -- so that we can quickly send a response to TRAI..
>>  > 5.     Antenna height
>>As allowed by local building laws

>SACFA to be directed to release a list of forbidden areas/frequencies, so that applicants may self-determine the combination of 5 (antenna height) and 6 (reach) accordingly, without causing nuisance to any existing user. In case the user (who need not be named) is not actually using equipment currently to broadcast in the designated band (87.5-108 MHz) such areas should be de-notified upon receipt of information. TRAI may appoint an independent body to monitor such usage of the broadcast bandwidth.
>
>>  > 6.     Permissible coverage area of CR station
>>To be determined by the applicant