Operator's manual : monitor, radio frequency R-2176/FRN (NSN 6625-01-098-2534).

"23 July 1981."

Direct support and general support maintenance repair parts and special tools list for transmitter, radio T-1428/FRN (NSN 5895-01-099-3576), tuner, radio frequency TN-588/FRN (NSN 5895-01-107-2124), switching unit, power transfer ....

"5 July 1983."

Organizational maintenance repair parts and special tools list for transmitter, radio T-1428/FRN (NSN 5895-01-099-3576), tuner, radio frequency TN-588/FRN (NSN 5895-01-107-2124), switching unit, power transfer ....

"5 July 1983."

Operator's and organizational maintenance manual : amplifier, radio frequency AM-1881/U.

"28 July 1960."

Field and depot maintenance manual : amplifier, radio frequency AM-1881/U.

"17 February 1961."

Field (fourth echelon) and depot maintenance manual : test set, radio frequency power AN/USM-161.

"11 June 1963."

Operator and organizational maintenance manual : test set, radio frequency power AN/USM-161.

"15 May 1962."

Operator's, organizational, direct support, general support, and depot maintenance manual : test set, radio frequency power AN/USM-260 (NSN 6625-00-917-3099).

"April 1967."

General support and depot maintenance manual : amplifiers, audio frequency-radio frequency AM-4825/U and AM-4825A/U.

"October 1969."

Operator's and organizational maintenance manual including repair parts and special tools list : test set, radio frequency AN/GRM-62.

"October 1967."

Operator's, organizational, direct support, and general support maintenance manual : test set, radio frequency, power AN/URM-182A (NSN 6625-01-062-3599).

"July 1978."

Handbook on radio frequency interference.

Mode of access: Internet.

Manufacture of high pressure die-cast radio frequency filter bodies

The manufacture of a radio frequency filter box using high pressure die casting (HPDC) is compared to the traditional high speed machining route. This paper describes an industrial exercise that concluded HPDC to be an economical and appropriate method to produce larger volumes of thin-walled telecommunications components. Modifications to the component design were made to make the component suitable for the HPDC process. Development of the die design through simulation modelling is described. The wrought alloy was replaced by near-eutectic Al-Si die casting alloy that was found to give better temperature stability performance. Apart from the economic benefits, HPDC was found to give lower filter efficiency losses through better surface finish. The effects of HPDC process variables, such as intensification pressure and injection piston velocity, on component quality, particularly porosity levels, were investigated. The pressure was analysed in terms of HPDC machine set pressure and the pressure measured in the die cavity by pressure sensors. Porosity was found to decrease with increased pressure and slightly increase with higher casting velocities.

Implementation challenges of application of radio frequency identification (RFID) in warehouse

Warehouse is an essential component in the supply chain, linking the chain partners and providing them with functions of product storage, inbound and outbound operations along with value-added processes. Allocation of warehouse resources should be efficient and effective to achieve optimum productivity and reduce operational costs. Radio frequency identification (RFID) is a technology capable of providing real-time information about supply chain operations. It has been used by warehousing and logistic enterprises to achieve reduced shrinkage, improved material handling and tracking as well as increased accuracy of data collection. However, both academics and practitioners express concerns about challenges to RFID adoption in the supply chain. This paper provides a comprehensive analysis of the problems encountered in RFID implementation at warehouses, discussing the theoretical and practical adoption barriers and causes of not achieving full potential of the technology. Lack of foreseeable return on investment (ROI) and high costs are the most commonly reported obstacles. Variety of standards and radio wave frequencies are identified as source of concern for decision makers. Inaccurate performance of the RFID within the warehouse environment is examined. Description of integration challenges between warehouse management system and RFID technology is given. The paper discusses the existing solutions to technological, investment and performance RFID adoption barriers. Factors to consider when implementing the RFID technology are given to help alleviate implementation problems. By illustrating the challenges of RFID in the warehouse environment and discussing possible solutions the paper aims to help both academics and practitioners to focus on key areas constituting an obstacle to the technology growth. As more studies will address these challenges, the realisation of RFID benefits for warehouses and supply chain will become a reality.