jon wrote:On a hunch, I clicked on Wikipedia's transmitter coordinates for CKNW and, by eye-balling it, would say that distance from the new Point Roberts site for KRPI to Downtown Vancouver is the same as from CKNW to Downtown. Both licensed for 50,000 watts with directional patterns favouring Vancouver.
NW has the advantage of a lower frequency, 980, of course. But there is also talk of a geological issue that somehow reduces the groundwave signal from the Cloverdale transmitter site into Vancouver.
Taken all together, it sounds to me like KRPI and CKNW will be about equal signal strength in Vancouver. A major improvment from the Ferndale site.
Eldon-Mr.CFAY wrote:IN the meantime good dxing Toomas on the frequencies near 1550 in case they do get local Whatcom County approval on this! Hope you can get some good AM DX catches before anything does change to 1550 AM...
Toomas Losin wrote:This will not be good for South Pacific DX. Right now KRPI is 10 kW at nights but will become 50 kW fulltime and will be closer to the Lower Mainland. This will totally blow away the Australian on 1548 kHz that I've been trying to hear in the current splatter.
The patterns are obviously designed to direct the signal into Canada; located a few hundred metres from the border there's no argument about that. KICY 850 had to get special permission to broadcast from Alaska into Russia. How is this any different? Maybe KRPI got permission but hasn't made any noises about it?
jon wrote:Here is the day pattern for Point Roberts:
The 5 towers appear to be laid out in the form of an X. Three towers day and three towers night, with only the centre tower in common.
If you aren't familiar with these pattern drawings, it is like a coverage map with North at the top, South at the bottom, West on the left and East on the right. Only difference is that it assumes dead flat identical terrain in all directions.
xwdcatvb wrote:I really don't think the FCC is gonna be too concerned about a dude in Metro Vancouver trying to hear 4QD/1548 from Emerald, Qld.
xwdcatvb wrote:As for KICY/850, wouldn't that have been a case of applying to change an existing domestic pattern for Nome? I really don't think the FCC could care less as long as the new pattern didn't interfere with a NA co-channel (KOA... yeah...) or violate any agreement with the Russians.
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