KKRZ

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KKRZ

Portland, Oregon United States
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	iHeartMedia (iHM Licenses, LLC)
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[1]
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	Public file LMS
Webcast	Listen Live Listen Live (HD2)
Website	z100portland.iheart.com alt1023fm.iheart.com (HD2)

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.^[2] Z100 carries 2 syndicated shows on weekdays, "Johnjay and Rich" in morning drive time^[3] and Ryan Seacrest at midday. Local DJs are heard in the afternoon and evening.

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.^[4][5] KKRZ broadcasts using HD Radio technology. Its HD-2 digital subchannel carries an alternative rock format known as "Alt 102.3." That signal feeds the 99-watt FM translator K272EL at 102.3 MHz.^[6]