Aug 10, 2022 · With long ranges, excellent signal penetration, and many base station networks already in place, the 400-MHz spectrum forms the ideal foundation for applications requiring …

Feb 17, 2025 · 一、本通知所称对讲机，是指工作在137—167MHz和401—423.5MHz频段（以下分别简称150MHz和400MHz频段）可实现点对点或点对多点双向通信的无线电收发设备，包括专用对讲机（含基站、转发台、直放站、终端）、共用对讲机、公众对讲机和水上移动业务对讲机（含海岸电台、江岸电台、船舶电台等，以下简称水上对讲机）。 专用对讲机是指专用于相关部门、行业或单位等进行无线通信和指挥调度的对讲机。 共用对讲机是指个人、家庭、团体、部分商业 …

November 2002 1 Small bands have been enlarged slightly for legibility. This chart is optimized for printing on legal size paper with a color printer. Services and footnotes in the expanded chart were transferred directly from the FCC's online Allocation Table (Revised as of September 25, 2001) and are believed to be complete and accurate, but …

Explore the 400 MHz to 480 MHz wireless spectrum usage by device FCC ID and FCC Rules. Convert 400 MHz to 480 MHz to Hertz, Kilohertz, Megahertz, or Gigahertz. Identify rules and operating devices at the 400 MHz to 480 MHz frequency bandwidth.

Aug 29, 2022 · Its long range, excellent signal penetration, and numerous base station networks in operation make the 400 MHz spectrum ideal for applications that require highly resilient communication.

5 days ago · In today’s society, the importance of critical communications is self-evident. It is like the “nervous system” of social operation. From the stable operation of national infrastructure to the orderly development of daily life, it is inseparable from its support. As the “lifeline” of critical communications, the importance of spectrum is self-evident. Different communication services ...

To determine whether or not you are required to relocate, you must first be aware of your government/non-government status in the context of the 400 MHz band. Licensees classified as government, will need to relocate services out of non-government spectrum.

When comparing 900 MHz and 400 MHz bands, there are five key differences. For this exercise, we are focusing solely on private spectrum. Both bands are licensed, which helps tremendously with interference. Generally, the 400 MHz band does well penetrating through solid objects.

Federal Communications Commission

Jun 28, 2019 · At the 84th Plenary Meeting of 3GPP RAN (3 rd -6 th June, 2019 in Newport Beach, California), 3GPP approved two new bands in the 400 MHz frequency range: This is an important step forward in the harmonized development of chipsets, modules, devices and network equipment in the 400 MHz band.