PMR

PMR may refer to:

Health and medicine

Other

Kel-Tec PMR-30

The PMR-30 is a full-size semi-automatic pistol being manufactured by Kel-Tec and was made available in 2011. It has a single action trigger pull of 3.5 to 5 lb_f (16 to 22 N) and a manual safety device. It is chambered in .22 Magnum (AKA .22 WMR) and the factory shipped double-stack magazine has a capacity of 30 rounds. The PMR-30 uses fixed fiber optic open sights. The slide is also pre-drilled to allow for the mounting of various red-dot sights with the purchase of appropriate mounting plates from the manufacturer. It has a European style magazine release.

Much polymer is used in the firearm to save on weight and cost, with a steel slide and barrel and aluminum internal grip frame.

Design

Since its initial market introduction, the PMR-30 has undergone several improvements due to problems with the early available design. The twist rate on the barrel rifling was increased to 1:11 to better stabilize bullets and reduce key-holing. A stronger, lightly textured polymer is now used for the frame. This eliminates drooping of the frame that created a large gap previously seen between the front of the frame and the barrel. This also gives the frame a less shiny appearance, and a less slick feel in the hand. More metal was added as reinforcement at the breech to completely cover the rim of a loaded cartridge, presumably for increased user safety in the event of a cartridge case separation. Additional improvements to the newer design include screws that may be loosened to adjust the front sight for windage, and ".22 WMR" stamped on the slide.

PMR446

PMR446 (personal mobile radio, 446 MHz) is a part of the UHF radio frequency range that is open without licensing for business and personal use in most countries of the European Union. (It has roughly the same use as FRS or GMRS in the United States and Canada.) Depending on surrounding terrain range can vary from a few hundred metres (in a city) to a few kilometres (flat countryside) to many kilometres from high ground. It is ideal for small-site, same-building and line of sight outdoor activities. PMR446 is used in both professional and consumer-grade walkie-talkies (similar to those used for FRS/GMRS in the United States and Canada).

Historically, analogue FM is used but a digital voice mode has been available in radios conforming to digital private mobile radio (dPMR446) and digital mobile radio (DMR Tier 1) standards designed by ETSI.

Radio Types

Commonly the definition of a PMR446 radio is a transceiver which transmits between 446.0–446.1 MHz and digital dPMR/DMR cover 446.1–446.2 MHz. Until recently, PMR446 radios were handheld radios with fixed antennas (see Technical information). In November 2015, Midland Radio announced the release of the GB1 mobile PMR446 radio for vehicular use.