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RS-232 Pinouts: pin connections & connectors

The correct connection of the various pins used for an RS232 data link are key to the operation of the system.Knowing the RS232 pinouts, or pin connections, and being able to make the required links enables the handshaking to operate correctly and the data to flow smoothly.Although the RS232 standard does not define a connector, the 9 way and 25 way D-type connectors are very popular and provide an excellent format.
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ESD Antistatic Wrist Strap

ESD Tutorial Includes:ESD BasicsHow ESD affects electronics componentsProtecting against ESDESD protected areaESD workbenchESD work matESD wrist strapESD clothingESD storageESD processESD on a budgetDesign to combat ESDAntistatic wrist straps or ESD wrist straps are worn by people working in static sensitive devices and assemblies to prevent them building up charge on themselves which could be transferred to the static sensitive item.
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Amateur Radio RTTY Frequencies, Bands & Channels

Amateur Radio RTTY Includes:RTTY basicsRTTY frequenciesSee also:Digimodes summaryAMTORRTTYPSK31Packet radioPACTORWSJTWSPRIn view of the fact that the amateur radio bands are planned so that different modes are restricted to particular areas to reduce interference and ensure the optimum use of each band, so RTTY can be found in particular areas of the HF amateur radio bands.
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GSM Network Interfaces

GSM primer includes:GSM introductionNetwork architectureNetwork interfacesRF interface / slot & burstGSM framesPower classes & controlChannelsAudio codecs / vocodersHandoverIn order to ensure that networks could be assembled from elements from different manufacturers, standard interfaces were defined.
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3G UMTS Data Channels: physical; logical; transport

3G UMTS includes:What is UMTSNetwork architectureRadio accessRadio interfaceFrequency bandsUMTS CDMAModulationData channelsUMTS TDDTD-SDCDMAHandoverLike any form of wireless data link, the data needs to be managed to enable the system to handle it efficiently and effectively.3G UMTS transmissions are organised into frames slots and channels with the payload using physical, logical and transport data channels to carry the required data.
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Ham Radio Bands: amateur radio band summaries

Ham radio bands summaries includes:Ham radio bands summaries136 kHz LF bandHF bandsVHF bandsUHF bandsThe properties of each amateur radio band vary for a variety of reasons. Everything from the propagation characteristics to the band planning, and the different spectrum allocations for different countries vary.
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