Gore cable-based antenna range
09 August, 2012Cable-based antennas or leaky feeders have been introduced to improve signal propagation without increasing the amount of hardware required on an aircraft.
Understanding the hidden power rating of antennas
14 March, 2012There are a number of antenna specifications that determine the selection of an appropriate antenna for a particular application. These may include bandwidth, directivity, gain, pattern stability and the PIM rating. Another important antenna rating, becoming more relevant in recent times, is the PIP rating, summarised in this article.
400 MHz changes benefit UHF CB users
20 July, 2011Owners of UHF CB radios will now have access to more channels in the 400 MHz band, following a three-year ACMA review and release of its time frames and plans to restructure the band.
APCO supports ESOs’ 800 MHz
21 June, 2011APCO Australasia supports the latest proposal for ESOs to be allocated spectrum in the 800 MHz band to build their own national mobile broadband network.
Understanding cable and antenna analysis
31 August, 2010 by AnritsuThe cable and antenna system plays a crucial role of the overall performance of a base sta¬tion system. This white paper covers the funda¬mentals of the key measurements of cable and antenna analysis: return loss, cable loss, and distance-to-fault (DTF).
Making better use of the spectrum
26 May, 2010A digital radio system that is designed to make more efficient use of the spectrum will use a 6.25 kHz bandwidth and have increased range.
Major changes planned for 400 MHz band
01 December, 2009The identification of a harmonised government band to facilitate interoperability between government agencies, particularly the police, security and emergency services, was one of the major proposals contained in a consultation paper presented at the RadComms conference in Sydney in April.
Radio map may tune in wave of innovation
30 June, 2009In one of the most detailed radiofrequency mapping projects ever carried out in Britain, one technology innovator is undertaking the first Britain-wide radio spectrum monitoring for Ofcom, the independent regulator and competition authority for British communications industries with responsibilities across TV, radio, telecoms and wireless services.
Averting spectrum saturation
26 May, 2009Mobile users want better video calls, streaming television and faster downloads, placing more demands on the limited radio spectrum available to operators. Could handsets that intelligently sense their radio environment and opportunistically grab free bandwidth be a solution?
Cognitive radio allows spectrum sharing
01 May, 2009In the event of a disaster, the emergency services have to be able to trust communication networks. But what happens if the network is overloaded or even off the air as a result of the disaster?
Spectrum licensing review
27 April, 2009The Australian Communications and Media Authority has released a discussion paper as part of a review of the technical frameworks that apply to spectrum licences.
Millimetric radio may speed data transfer
05 August, 2008Researchers have proved the viability of a new and as yet untapped radio frequency band which will increase the speed and capacity of data transfer to wireless devices like laptops and iPods, and potentially between a home DVD player and high-definition TV.
Tiny nanotube antennas may yield better signals
08 January, 2004In the future, mobile phone calls and television pictures could become a lot clearer thanks to tiny antennas thousands of times smaller than the width of a human hair. At least that's the speculation of a University of Southern California researcher who has been investigating nanotube transistors.
Tiny nanotube antennas may yield better signals
08 January, 2003In the future, mobile phone calls and television pictures could become a lot clearer thanks to tiny antennas thousands of times smaller than the width of a human hair. At least that's the speculation of a University of Southern California researcher who has been investigating nanotube transistors.
