Hearing range 60 decibels, the hearing range for the Senegal bushbaby is 92 Hz–65 kHz, and 67 Hz–58 kHz for the ring-tailed lemur. Of 19 primates tested, the Japanese macaque had the widest range, 28 Hz–34.5 kHz, compared with 31 Hz–17.6 kHz for humans. Cats have excellent hearing and can detect an extremely broad range of frequencies. They can hear higher-pitched sounds than humans or most dogs, detecting frequencies from 55 Hz up to 79 kHz. Cats do not use this ability to hear ultrasound for communication but it is probably important in hunting, since many species of rodents make ultrasonic calls.
General Mobile Radio Service and 25 kHz channel bandwidth although some "bubble pack" combo FRS/GMRS radios utilize 2.5 kHz deviation. For best compatibility of audio level, 5 kHz deviation should be used when communicating with GMRS equipment. The 4-digit decimal GMRS frequencies (shared FRS 1-7 / ICOM 9-15) are spaced 12.5 kHz from the (ICOM 1-8) GMRS frequencies, and may receive interference from other nearby stations. It may be advisable to use 12.5 kHz narrow-band (NFM) in congested areas, or avoid their use as a last resort. This second set of frequencies shows the interstitial ranges shared with the Family Radio Service services. These