[BrendaAnnD]

In Portland, the AM dial has changed almost completely.

In 1970: Today

620 KGW KPOJ
750 KXL KXTG
800 KPDQ KPDQ
910 KISN KKSN
970 KOIN KUFO
1080 KWJJ KFXX
1150 KKEY KXET
1190 KEX KEX
1230 KRDR KRYN
1290 KLIQ DARK
1330 KPOK KPPZ
1410 KPAM KBNP
1450 KBPS KBPS
1480 KVAN KBMS
1520 KYXI KGDD
1550 KGAR? KKOV

As you can see, only three total stations on the whole dial still retain their original call signs. KPDQ is a religious station. KBPS is public radio from Benson Polytechnic High School. KEX is one of the original 50K clear channel stations.

Out of all of these, only KPDQ and KBPS retain the same format and "ownership".

New frequencies lit up in the area since 1980:

860 KPAM Troutdale
1010 KOOR Milwaukie
1040 KXPD Tigard
1130 KQRR Mt. Angel
1640 KDZR Lake Oswego

Other stations in or near the PDX market:

550 KOAC Corvallis
880 KWIP Dallas
940 KWBY Woodburn
1360 KUIK Hillsboro