In many countries, Amateur Radio operators may also send, receive, or relay radio communications between computers or transceivers connected to secure virtual private networks on the Internet.Īmateur Radio is officially represented and coordinated by the International Amateur Radio Union (IARU), which is organized in three regions and has as its members the national Amateur Radio societies which exist in most countries. This enables communication across a city, region, country, continent, the world, or even into space. Radio amateurs are limited to a small set of frequency bands, the Amateur Radio bands, allocated throughout the radio spectrum, but within these bands are allowed to transmit on any frequency using a variety of voice, text, image, and data communications modes. Amateur operators must hold an Amateur Radio license which is obtained by passing a government test demonstrating adequate technical radio knowledge and legal knowledge of the host government's radio regulations. National governments regulate technical and operational characteristics of transmissions and issue individual station licenses with a unique identifying call sign, which must be used in all transmissions. The Amateur Radio service ( amateur service and amateur-satellite service) is established by the International Telecommunication Union (ITU) through the Radio Regulations. Exceeding these temperatures may affect performance or damage the device and/or other system components.Polish ham call sign SP1OE, Vacuum tube devices, transmitter and AR-88 receiver (1950) Operating Temperature: Recommended operating temperature, typically given in a range or as a maximum. Height Above Board: The maximum height above the surface of the PCB that the device reaches when mounted. Termination Style: The style of the terminations used to connect the device to the system, such as PC Pin, Solder Lug, or Wire Leads.įeatures: Refers to the different feature packages a device has. Due to that they are the least popular type of lead. Leads must be formed into a gull shape prior to use with a separate piece of equipment. Must be protectively packaged to prevent damage to leads. J-Leads: Less pins per inch than gull wing leads but they are stronger and less susceptible to breakage. Easy to inspect for defects after soldering. Gull wing leads: Enable the most pins per inch when compared to J-lead types but they are more fragile. There are three basic types of pins (leads) for surface mount devices. Typically, they are smaller than the through-hole components. May not use or even have all the pins/pads for example 24-SMD module, 14 leads: would fit in the space of a 24-SMD module but only has 14 pins/pads. Number in front of SMD indicates how many pins/pads, for example a 6-SMD module has 6 pins/pads. Have pins or pads that connect to solder pads on the PCB that are then soldered in place forming an electrical and mechanical connection. Screws or bolts go through wings (flanges) that protrude from the product.Ī mount that incorporates a connector into its method of attachment into the electrical system. Has a stud bolt incorporated into one side for attachment. Mounting Type: How the device is attached.ĭesigned to be mounted to a metal chassis.Īttaches to a metal chassis but it includes an 8" wire for connection.ĭesigned to be mounted to a metal Chassis using an incorporated stud bolt. Primarily applicable to coin cells and less-common cylindrical cells. Number of Cells: The number of individual batteries the device is designed to interface withīattery Series: Indicates size(s) and number(s) of cells a holder can accommodate. Style: The physical form and style of the device.īattery Cell Size: The battery cell size the device is designed to interface with. Battery holders for coin cell, cylindrical or rectangular batteries are used to secure battery(s) from one to 10 or more cells in series and parallel configurations.īattery Type, Function: Refers to the shape of cells accommodated and style/form factor of the device. This Product Selection Guide contains information to help select products in the Battery Holders, Clips, Contacts category on īattery holders, clips, and contacts allow circuitry and devices to connect to battery-based power sources using various termination methods such as plugs, PC pins, crimp, surface and through-hole solder, snaps, or wire leads.
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