Perancangan Antena Super J-Pole 146 MHz Band Radio Amatir

The DBJ-1: A VHF-UHF Dual-Band J-Pole

Two-meter antennas are small compared to those for the lower frequency bands, and the availability of repeaters on this band greatly extends the range of lightweight low power handhelds and mobile stations. One of the most popular VHF and UHF base station antennas is the J-Pole. The J-Pole has no ground radials and it is easy to construct using inexpensive materials. For its simplicity and smal...

RADAR Imaging in the Open field At 300 MHz-3000 MHz Radio Band

With the technological growth of broadband wireless technology like CDMA and UWB , a lots of development efforts towards wireless communication system and Imaging radar system are well justified. Efforts are also being imparted towards a Convergence Technology.. the convergence between a communication and radar technology which will result in ITS ( Intelligent Transport System ) and other appli...

Digital Radio Mondiale ( DRM ) DIGITAL RADIO MONDIALE DRM LOCAL COVERAGE USING THE 26 MHz BROADCASTING BAND

This document reports on a carefully designed set of fixed and mobile reception tests in Mexico City on the DRM (Digital Radio Mondiale) system at a frequency in the uppermost shortwave broadcasting band – around 26 MHz – for local broadcasting. The testing was done during July 2005. These were not operational tests; that is, neither the transmitter antenna, nor antenna location, nor transmitte...

IEEE 802.15.4 transceiver for the 868/915 MHz band using Software Defined Radio

This paper reports an implementation of the PHY specifications of the IEEE 802.15.4 standard for the frequency band 868/915 MHz on a Software Defined Radio (SDR) platform. This standard is defined for low power, low data rate and low cost wireless networks. These specifications are used by the Zigbee technology for various applications such as home automation, industry monitoring or medical sur...

Time - scales of Radio Emission in PSR J 0437 - 4715 at 327 MHz