CKDU-FM Halifax: Less Power more coverage

[hugh]

from Broadcasting Decision CRTC 2010-210

CKDU-FM Halifax – Technical change

1. The Commission approves the application by CKDU-FM Society regarding the English-language community-based campus radio programming undertaking CKDU-FM Halifax. The licensee proposed to change the authorized contours of CKDU-FM by decreasing the average effective radiated power from 3,200 watts to 2,460 watts (non-directional antenna with an effective height of antenna above average terrain of 156.5 metres). The licensee also proposed to change the location of the transmission site. The Commission received an intervention in support of this application. The implementation is subject to the notification by the Department of Industry (the Department) discussed in paragraph 4.

2. The licensee indicated that its current transmission site is no longer available because it was deemed to be a public safety hazard. The licensee also indicated that, since the proposed site is considerably higher than the current site, there will be secondary benefits to the move, such as an increase in the size of the service area as well as in the quality of CKDU-FM’s signal within its broadcast range.

3. The Commission notes that the population served within the station’s 3 mV/m contour will increase from 226,444 to 304,316. The population served within its 0.5 mV/m contour will increase from 335,446 to 371,866.

[tvlurker]

What's the big deal? The new antenna has an EHAAT over 112m higher.

  	PRESENT
OPERATION 	PROPOSED
OPERATION / 
NEW TRANSMITTER	NOTE 
 Frequency 	88.1 MHz	  88.1 MHz	 kHz for AM
 MHz for FM 
 Channel and Class 	201A	  201A	  
 Transmitter Power (for AM) 	Watts 	Watts 	  
 MAXIMUM - ERP (for FM)
 (at beam-tilt angle) 	5,800 Watts 	2,460 Watts 	 ERP = Effective radiated
 power
 If no beam-tilt is used,
 provide ERP in horizontal plane 
 AVERAGE - ERP (for FM)
 (at beam-tilt angle) 	3,200 Watts 	2,460 Watts 	 ERP = Effective radiated
 power
 If no beam-tilt is used,
 provide ERP in horizontal plane 
Antenna Radiation Pattern	Directional 	Non-Directional 	Directional/Non-directional antenna
 EHAAT - Effective Height Above
 Average Terrain 	 44 metres 	156.5 metres 	 FM only 
 Antenna and Transmitter
 Site Coordinates 	44 38 12 N.
63 35 13 W.	44 39 03 N.
63 39 25 W.	 North Latitude
 West Longitude 
 Studio Location(s) 	  Halifax	  Halifax	 City and, where possible,
 street address  
 Subsidiary Communications
 (SCMO)/Subsidiary Data 	YES (  )
  NO ( X )  	YES (  )
  NO ( X )	  
 For Rebroadcasting
 Stations, identify station
 rebroadcast 	  	  	 Call Letters
 Frequency
 Location