CJET-FM (92.3 MHz) is a commercial radio station licensed to Smiths Falls, Ontario, and serving the Ottawa Valley and National Capital Region. The station is owned by Rogers Radio, a division of Rogers Sports & Media. It broadcasts an adult hits format and is branded as Jack 92.3.

CJET-FM has an effective radiated power (ERP) of 9,300 watts (17,000 watts maximum), horizontal polarization only. The transmitter is on Ontario Highway 15 near Line Road 7 in Beckwith, Ontario. On October 26, 2023, the station swapped call letters with its sister station, switching from CKBY-FM to CJET-FM, after the sister station abandoned its CityNews Radio format. After stunting a Christmas music format, Jack FM made its return to CJET-FM 92.3 at midnight December 27, 2023. The station previously used the "Jack" format from 2004 to 2020.

The station was launched in 1955 by Rideau Broadcasting as CJET, on 1070 AM, and played a country format. Prior to signing on, the station would have been known as CFRL = "Rideau Lakes" it was changed to CJET when the station signed on. It began broadcasting in a daytime-only capacity On October 22, 1955. In 1958, the station's frequency changed to 630 AM.

In the early 1960s Rich Little was hired full-time as a disc jockey and talk show host. His afternoon-evening shift ran from 4 to 8 weekdays, and the show gave him the opportunity to use his impressions on the air.

In 1969, CJET-FM was launched on 101.1 FM as a stereo simulcast of the AM signal.

In 1984, the AM and FM stations were sold to Harvey Glatt's CHEZ-FM Inc., which was subsequently acquired by Rogers Communications, the stations' current owner, in 1999. On March 21, 2000, the Canadian Radio-television and Telecommunications Commission (CRTC) approved Rogers' application to convert CJET from the AM band (630 kHz) to the FM band on 92.3 MHz. On October 14, 2001, CJET-FM began testing on 92.3 MHz and launched on October 27 as Country 92. CJET's 630 AM transmitter was later shut down. The station adopted an adult hits format as 92.3 Jack FM in 2004.

On December 3, 2020, CJET returned to country as Country 92.3, taking on the format and programming of CKBY-FM (both stations would also swap callsigns) after its flip to all-news radio as a simulcast of CIWW CityNews Ottawa. The two stations also swapped call letters.

On October 26, 2023 at 1:00 p.m., the country format was reverted back to CKBY-FM 101.1 (along with the callsign change) after Rogers decided to discontinue the all-news format in Ottawa. After the two frequencies simulcasted for several days, 92.3 would begin stunting on November 1 with Christmas music for the holiday season as Santa Radio Canada, sharing its branding with an internet radio stream promoted by Rogers under the same name. On December 27, 2023, the station returned to the Jack FM format as Jack 92.3 (emphasizing the return by promoting itself as "Smith Falls' new-ish radio station").

On November 22, 2024, Rogers announced its intent to sell CJET-FM to My Broadcasting Corporation, pending CRTC approval.

• Jack 92.3
• CJET-FM at The History of Canadian Broadcasting by the Canadian Communications Foundation
• CJET Radio - Ottawa Valley Country Music Hall of Fame
• Smiths Falls Then & Now - CJET
• CJET-FM in the REC Canadian station database

45°4′50″N 76°5′52″W / 45.08056°N 76.09778°W / 45.08056; -76.09778