Question: What is the radio frequency on which "Reminiscing" is broadcast?

Context paragraphs:
Tuned radio frequency receiver: A tuned radio frequency receiver (or TRF receiver) is a type of radio receiver that is composed of one or more tuned radio frequency (RF) amplifier stages followed by a detector (demodulator) circuit to extract the audio signal and usually an audio frequency amplifier.  This type of receiver was popular in the 1920s.  Early examples could be tedious to operate because when tuning in a station each stage had to be individually adjusted to the station's frequency, but later models had ganged tuning, the tuning mechanisms of all stages being linked together, and operated by just one control knob.  By the mid 1930s, it was replaced by the superheterodyne receiver patented by Edwin Armstrong.

Wireless Monitoring Organisation: The Wireless Monitoring Organisation (WMO), set up in 1952, is responsible for monitoring all wireless transmissions and is essentially the eyes and ears of the Wireless Planning & Coordination Wing (WPC) in the Ministry of Communications & IT of the Government of India.  Its primary task is to monitor the entire radio frequency spectrum with a view to provide the requisite technical data logistic support to the WPC Wing in the enforcement of the National and International Radio Regulatory and statutory provisions for efficient management of Radio Frequency Spectrum and Geo-Stationary Orbit.  This is in the interest of vital national service which, though not revenue bearing, yields considerable indirect benefits through promoting the efficient utilisation of the radio frequency spectrum and the geostationary orbit.

RF and microwave filter: Radio frequency (RF) and microwave filters represent a class of electronic filter, designed to operate on signals in the megahertz to gigahertz frequency ranges (medium frequency to extremely high frequency).  This frequency range is the range used by most broadcast radio, television, wireless communication (cellphones, Wi-Fi, etc.), and thus most RF and microwave devices will include some kind of filtering on the signals transmitted or received.  Such filters are commonly used as building blocks for duplexers and diplexers to combine or separate multiple frequency bands.

Radio-frequency sweep: Radio frequency sweep or "frequency sweep" or "RF sweep" refer to scanning a radio frequency band for detecting signals being transmitted there.  This is implemented using a radio receiver having a tunable receiving frequency.  As the frequency of the receiver is changed to scan (sweep) a desired frequency band, a display indicates the power of the signals received at each frequency.

Pulsed radiofrequency: Pulsed radiofrequency is the technique whereby radio frequency (RF) oscillations are gated at a rate of pulses per second (cycles per second, defined as a hertz (Hz)).  Radio frequency energies occupy 1.0 x 10 Hz to 3.0 x 10 Hz of the electromagnetic spectrum.  Radio frequency electromagnetic energy is routinely produced by RF electrical circuits connected to a transducer usually called an antenna.

Harold Beverage: Harold Henry "Bev" Beverage (October 14, 1893 – January 27, 1993) is perhaps most widely known today for his invention and development of the wave antenna, which came to be known as the Beverage antenna and which for the last few decades has seen a resurgence in use within the amateur radio and broadcast DXing hobbyist communities.  Less widely known (outside of the community of science history researchers) is that Bev was a pioneer of radio engineering and his engineering research paralleled the development of radio transmission technology throughout his professional career with significant contributions not only in the field of radio frequency antennas but also radio frequency propagation and systems engineering.

Tuner (radio): A tuner is a subsystem that receives radio frequency (RF) transmissions like radio broadcasts and converts the selected carrier frequency and its associated bandwidth into a fixed frequency that is suitable for further processing, usually because a lower frequency is used on the output.  Broadcast FM/AM transmissions usually feed this intermediate frequency (IF) directly into a demodulator that convert the radio signal into audio-frequency signals that can be fed into an amplifier to drive a loudspeaker.

Bob Rogers (disc jockey): Bob Rogers OAM (born 3 December 1926) is an Australian disc jockey and radio broadcaster.  He presents "The Bob Rogers Show", Monday to Friday between 9 am and 1 pm, and the six-hour Saturday evening "Reminiscing" program on Sydney radio station 2CH.

Continuous Tone-Coded Squelch System: In telecommunications, Continuous Tone-Coded Squelch System or CTCSS is a circuit that is used to reduce the annoyance of listening to other users on a shared two-way radio communications channel.  It is sometimes referred to as tone squelch or sub-channel since it has the effect of creating multiple virtual channels which are all using the same radio frequency.  It does this by adding a low frequency audio tone to the voice.  Where more than one group of users is on the same radio frequency (called "co-channel users"), CTCSS circuitry mutes those users who are using a different CTCSS tone or no CTCSS.  The CTCSS feature does not offer any security.

2CH: 2CH is a commercial radio station in Sydney, Australia, at 1170 kHz AM.  It broadcasts an oldies format, and is aimed at an older age demographic.  In January 2017 2CH was sold to a consortium of Oceania Capital Partners, Glenn Wheatley and John Williams.

Supporting paragraphs: Bob Rogers (disc jockey) 2CH
Answer: 1170 kHz AM