Patrick Martin wrote: > Mike, > > As it has been said before "money talks". It will be interesting to find > out what the pattern will be with the new 15 KW.
Find out? No need to guess. It's all right there in the application, as is KPIG's application for 2400 watts (not 4 kW, as was stated earlier in the thread) at night. There are no surprises in either - KGA's new pattern, using four of the towers at the site it shares with KJRB 790 south of Spokane, will be one big fan-shaped lobe aimed WNW, with a very small back lobe aimed SE. The application lays out precisely what the new signal will do and what it will cover: the 5 mV/m nighttime groundwave contour will just clip the northern Spokane city limits, while the 2 mV/m "protected" nighttime contour (I'm not sure I agree with the stated rationale behind that figure) will cover about 400,000 people, taking in all but the northern panhandle of Spokane County. Coeur d'Alene loses predicted night coverage, though it should do OK...for now. The big "what if" here is what the other western 1510s will end up doing when KGA makes its move. In its application, KGA identifies the class D stations in Mesa/Phoenix, Fresno, Milbank SD and West Jordan/Salt Lake as being potentially eligible to become class B operations once they don't need to protect KGA. It also notes that the existing class B operations at KSPA 1510 Ontario CA and at KGDD 1520 Oregon City/Portland will enjoy significantly lower NIFs as a result of the KGA downgrade. (That likely means, though KGA doesn't say so, that those stations might be able to improve their own night signals.) And of course the point of all of this is the upgrade to KPIG. Just by knocking KGA down, KPIG's NIF drops dramatically, from 16.6 to 4.0. That alone would give KPIG usable night service over much of San Francisco - but the power increase from 220 to 2400 watts will improve that even more, picking up most of San Mateo County, Marin County and at least the coastal portions of the East Bay. It will still be an unusable signal in the South Bay (thanks to KSJX on 1500), the North Bay (thanks in part to KTOB on 1490) and over the East Bay hills in Contra Costa County. It's all in black and white (and some color, actually) right here: http://fjallfoss.fcc.gov/prod/cdbs/forms/prod/getattachment_exh.cgi?exhibit_id=524863 (watch the wrap!) s _______________________________________________ IRCA mailing list [email protected] http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: [email protected]
