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New KTRB Application New Non-Directional Daytime Site Hayward 50 kw
- Thread starter Michael Rivers Kramer
- Start date
Won't make a bit of difference in terms of whether or not this station succeeds...
The key to all this:
By means of this present application, the licensee proposes to change the daytime transmitter site location and utilize a non-directional antenna. KTRB proposes to co-locate with existing AM station, KFAX, operating on 1100 kilohertz. The KTRB daytime power will remain at 50 kilowatts while the nighttime operation is unchanged.
The new KTRB daytime signal would be sent through KFAX's existing tower #3 in Hayward. At nighttime, KTRB would continue to broadcast with a directional 50kw signal from the Livermore site.
The technical exhibit (a fun read, actually) is at:
http://tinyurl.com/ktrb-hayward
By means of this present application, the licensee proposes to change the daytime transmitter site location and utilize a non-directional antenna. KTRB proposes to co-locate with existing AM station, KFAX, operating on 1100 kilohertz. The KTRB daytime power will remain at 50 kilowatts while the nighttime operation is unchanged.
The new KTRB daytime signal would be sent through KFAX's existing tower #3 in Hayward. At nighttime, KTRB would continue to broadcast with a directional 50kw signal from the Livermore site.
The technical exhibit (a fun read, actually) is at:
http://tinyurl.com/ktrb-hayward
BossRadioDJ said:
What does this do to Salem's application to increase KDOW 1220 to 50 kW-U DA-2 from the KFAX site? A triplex would probably be prohibitively expensive and would take forever to build out and proof. A possibility would be to leave 1220's current 5 kW ND-D operation alone on the other side of the Bay and run 1220 with 50 kW-DA from Hayward at night only.
The biggest challenge in 50 kW ND operation from the Hayward site is delivering less than 10 mV/m to the FCC's monitoring station near Livermore. Thanks to the relatively low efficiency of the KFAX towers at 860 (293 mV/m/kW @ 1 km), where they are just 70.4 degrees tall, KTRB's proposed 10 mV/m just misses the monitoring station. I presume this consideration entered into the use of KFAX's #3 tower for KTRB. The ground system is that of all four KFAX towers, which makes it way oversized to the north, west, and east of tower #3. Toward the monitoring station, however, the ground system is a little undersized. At least KFAX puts nearly equal power into all four towers.
DanStrassberg said:
Somebody had suggested a while back that KTRB should diplex with KCBS up at Black Point (Novato). I questioned why CBS would want to make a deal that benefits a competitor, and the immediate response was "uh, for the money."
I'm wondering if making the deal with Pappas might benefit Salem's bottom line, which might free up the funding for the KDOW project.
BossRadioDJ said:
Sounds like a good idea; might work day and night. KCBS has to protect the 740 in Toronto to the same extent that KTRB has to protect the 860 in the same city (in fact, the two Toronto stations are diplexed--with each other). If KTRB could get out of its current night site and the high costs of trucking in propane every day, Pappas could probably afford the rent at the Novato site. You've gotta believe that DuTreil, Lundin and Rackley looked into the Novato site and it didn't work for some reason. It's not as though CBS is constitutionally opposed to diplexes; they built the WCBS/WFAN plant back when they owned only one of the stations.
DavidKaye said:
From what I've heard, that was long, long ago. The 30s probably. Back then, KSFO was ND-U (5 kW-D/1 kW-N or maybe even just 1 kW-U). So KFRC was diplexed from KSFOs tower (singular). I have to wonder whether the intended tenant at the KVTO stick (when built, it was KRE's), was not 610 (the actual tenant) but 560. That tower is just 90 degrees at 560; it is 98 degrees at 610.
DavidKaye said:
You are correct. In addition, KFRC's successor, KEAR/610 continues to diplex with KVTO/1400 on the tall tower in Berkeley, and KZSF/1370 works off of KSJX/1500's towers in San Jose. Plus several local FM stations have their boosters on shared towers in Lafayette/Walnut Creek and Pleasanton.
I was giving consideration to the fact that, unlike most other cases, the KTRB situation involved a "carpet bagger" moving in from the outskirts, and why a long-established 50,000-watt station would want to make it easy (relatively) for a potential competitor (for ears and advertiser dollars) to gain a foothold here.
I think the fact that there is historic precedent in stations diplexing weakens that argument significantly.
DanStrassberg said:
"Long, long ago" is a relative term. For me, 1968 was not that long ago; KFRC diplexed off of one of KSFO's towers near Islais Creek from 1958 through December 1968, when the 610 transmitter moved to Berkeley.
I don't think KSFO, which has been transmitting from the Islais Creek site since 1937, ever considered a move to Berkeley; I don't think there would have been a need to. Note that KSFO's goal in the 1940s was to move to 740 AM, trading dial spots with KQW (now KCBS), with KSFO becoming the 50,000-watt CBS station in the Bay Area.
BossRadioDJ said:
Until its 1951 move to Novato, KQW on 740 (later with the KCBS calls) was licensed to San Jose and transmitted from Alviso, running 7500W ND. I thought that Gene Autry's Golden West Broadcasting, which owned KSFO 560, wanted the 740 frequency for KSFO, not to become a CBS affiliate, but to bring KSFO's programming (MOR music at the time, I believe--like co-owned KMPC in LA) to the geographically wider audience that 50 kW on 740 could deliver. I was under the impression that, until the deal collapsed, the plan was to have KSFO and KCBS swap frequencies by moving the KCBS calls to 560 in SF from 740 in San Jose and to initially run KCBS with 5 kW-D/1 kW-N from a site right on the Bay in downtown SF. I don't know why the deal with Golden West fell apart, but when it did, CBS decided to build out the Novato site and 50-kW upgrade for KCBS while KSFO remained on 560. Do I have the story wrong?
DanStrassberg said:
In a word, yes. Gene Autry didn't buy KSFO until August 1956. We're talking about something that happened long before The Cowboy came along.
The thumbnail version is this: KSFO was previously owned by The Associated Broadcasters, and became the Bay Area's CBS network affiliate in 1937. Subsequently, extensive plans were made to switch dial spots with KQW, which moved to 740 AM from 1010 AM during the NARBA reallocations in March 1941.
KSFO lost its CBS affiliation at the end of 1941, with CBS deciding to tie in with KQW, which began migrating to San Francisco (though licensed to San Jose). Meanwhile, KSFO's plan for 50,000 watts on 740 was approved by the FCC in 1948 ... along with their owners' application for San Francisco's first TV station, KPIX (Channel 5).
Long story shortened: KSFO's owners traded the opportunity for the 50,000-watt upgrade on 740 to CBS in exchange for Channel 5's affiliation with the fledgling CBS television network. CBS bought KQW, it became KCBS on April 3, 1949 ... and it boosted its power to 50kw on August 9, 1951.
Incidentally, KQW was 5,000-watts (day and night) before the boost, not 7,500.
More about this on the museum website at:
http://www.bayarearadio.org/schneider/ksfo.shtml
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