Radio Canada International, BC Relay Station. http://CBC.am/rci-bc.htm
For covering Australasia, it seems that an HR 4 / 3 / 1 is recommended, at 500 kw. RCI could literally overpower (with respect to DBi field strength) RNZI or Radio Australia if the proper frequencies were chosen. -- text -- Technical Note The city of Esquimalt, BC was chosen as a transmitter site for software related reasons. The final location for the RCI relay station is not set in stone, as there are many factors that will affect the final placement of this relay station. It is expected that Tofino, Bella Bella, Masset or other coastal BC cities could be chosen for the relay station (s). The reasons for other sites to be chose are based on the following varibles: - geography : all sea path to Asia Pacific, a requirement with respect to reducing transmitter output power requirements - geology : swampy or near swampy conditions (for high HF reflectivty), near zero (1 in 750 years) tsunami risk, minimal eartquake / rockfall / land slippage or any other related geological risks, no tall moutains to interfere with signal transmission path ... - electrical : electrisity supply (a 500 kw transmitter needs ~ 1.25 megawatts to run at full power), avoidance of population centres (to comply with IEEE and EBU recommendations on exposure to EM fields) - accessability and defensibiliy of transmitter site (s) with respect to paved roads, useful for staff morale -- nearby urban centres have more services - land easily donatable by BC or Federal gouverment, not subject to any onging first nations land claims processes Secondary relay station sites : Kitimaat, BC suggests itself for targeting the Russian Far East, China and other parts of North Asia. All of these computations assume that an ALLISS transmission system is used. ALLISS only requires 15 ha per module. One ALLISS module could solve 60 % of RCI's transmission needs in the Asia Pacific, and Latin American regions. However, the ALLISS system lacks the directivity of a multi-segmented curtan array. A second relay station some distance (100+ kms) away that would possess: 1 x HRS 12 / 6 / 1 (9, 11, 13, 15, 17, 21 mhz) to North Asia 1 x HRS 12 / 6 / 1 (7, 9, 11, 13, 15, 17 mhz) to Latin America Such a relay station would increase directivity and audibiliy in these regions by 12 db or more, when compared to HRS 4 / 4 / 1 antenna systems. -- end text -- ---[Start Commercial]--------------------- World Radio TV Handbook 2003 is out! Order it now! http://www.amazon.com/exec/obidos/ASIN/0823059677/hardcoredxcom ---[End Commercial]----------------------- ________________________________________ Hard-Core-DX mailing list [EMAIL PROTECTED] http://dallas.hard-core-dx.com/mailman/listinfo/hard-core-dx http://www.hard-core-dx.com/ _______________________________________________ THE INFORMATION IN THIS ARTICLE IS FREE. It may be copied, distributed and/or modified under the conditions set down in the Design Science License published by Michael Stutz at http://dsl.org/copyleft/dsl.txt
