CBW Winnipeg and CBY Corner Brook, Newfoundland and Labrador, share Class A status on 990 kHz. Because 990 kHz is a multiple of both 9 and 10, the frequency is available for use by broadcast stations in all three ITU regions .

WDEO is a radio station broadcasting on 990 kilohertz in Ypsilanti, Michigan. Broadcasting Catholic programming, WDEO is operated by Ave Maria Radio. Most programming is locally produced, but some daytime content comes from the EWTN Global Catholic Radio Network.

2023年11月12日 · Night: Monitored 990 KHz from 9-945pm this evening. Stations received: - WDEO, weak. 20 miles west of me. All but disappears on their night pattern at 250w. - CBW, good signal if I rotate my loop in its direction. - WNML Knoxville, TN. CBS Sports radio. This is a new one for me. - Something else? Music, classic hits. Faded above the slop ...

990 AM is a Canadian clear-channel frequency. KATD protects the nighttime signal of CBW in Winnipeg by reducing power and using a signal nulled to the northeast. CBW and CBY are the Class A stations on 990 kHz. In the late 1950s, the station's call letters were "KKIS." On January 1, 1960, Kay Kis Corporation assumed ownership of the station.

CBY is a clear-channel station broadcasting at 990 kHz (AM) from Corner Brook, Newfoundland and Labrador, using a power of 10,000 watts. Owned by the Canadian Broadcasting Corporation, it is the main outlet for the CBC's Radio One network in western Newfoundland.

2022年10月4日 · FM频段是一般指调频广播，我国的调频广播频率为88MHz~108MHz范围，这个范围之内共划分为210个频道，接收机的中频频率为10.7MHz，标称载频为100KHz，频道宽度为200KHz。 无线电的载波是正弦波，而控制信号可以用需要传送的波形，由于载波频率较高才能把无线电波从天线上发射出去。 要把音波发射出去，就得利用载波，见上图 (a)音频波称为“调制波”，见上图 (b)，把它们调制成已调波，它的频率和载波相同，而其振幅随着调制波的波形变 …

List of 990 kHz AM radio stations in the United States.

原上海广播电视台990新闻频率（调频93.4兆赫、中波990千赫），是上海广播电视台1949年5月27日成立时的第一套频率，1992年10月28日作为新闻频率对外播出。

2024年8月26日 · News Talk Am 990 Newsradio 990 Radio Station information for KTMS at 990 kHz MHz on your AM dial.

KWAM is an AM radio station broadcasting at 990 KHz. The station is licensed to Memphis, TN and is part of that radio market. The station broadcasts Talk programming.