KKRZ
KKRZ (100.3 MHz) is a commercial FM radio station in Portland, Oregon, known as Z100. It is owned by iHeartMedia and airs a Top 40 (CHR) radio format. The studios and offices are on SW 68th Parkway in Tigard. Z100 carries 2 syndicated shows on weekdays, "Johnjay and Rich" in morning drive time and Ryan Seacrest in middays. Local DJs are heard in the afternoon and evening.
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| Broadcast area | Northwestern Oregon, Southwestern Washington |
| Frequency | 100.3 MHz (HD Radio) |
| Branding | Z100 |
| Programming | |
| Format | Top 40 (CHR) |
| Subchannels | HD2: Alternative rock "Alt 102.3" |
| Affiliations | Premiere Networks KATU for traffic and weather reports |
| Ownership | |
| Owner |
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Sister stations | KEX, KFBW, KKCW, KLTH, KPOJ, KXJM |
| History | |
First air date | May 7, 1946 (as KGW-FM on 95.3) |
Former call signs | KGW-FM (1946-1950) KGW-FM (1952-1954) KQFM (1954-1983) |
Former frequencies | 95.3 MHz (1946-1947) |
Call sign meaning | K K RoZe ("Rose" as in "Rose City") |
| Technical information | |
Licensing authority | FCC |
| Facility ID | 11280 |
| Class | C |
| ERP | 100,000 watts |
| HAAT | 470 meters (1,540 ft) |
| Translator(s) | 102.3 K272EL (Portland, relays HD2) |
| Links | |
Public license information | |
| Webcast | Listen Live Listen Live (HD2) |
| Website | z100portland.iheart.com alt1023fm.iheart.com (HD2) |
KKRZ has an effective radiated power of 100,000 watts, which is the maximum for most American FM stations. The transmitter is in Portland's West Hills, off NW Skyline Boulevard. KKRZ broadcasts using HD Radio technology. Its HD-2 digital subchannel carries an alternative rock format known as "Alt 102.3." That signal feeds 99-watt FM translator K272EL at 102.3 MHz.
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