Communications, Radar & Electronic Warfare (201.. - Index of

246 Communications, Radar and Electronic Warfarecompared to the one on the bottom. An aircraft travelling at the same constant heightabove the telTain in both diagrams will have a wider regime in which to detecttransmissions from the radio antenna at the left of both diagrams when the verticalpattern is wider than when it is narrower. Also, with a cOlTectly tilted antenna, thevulnerable area can be made to be further away than for the wider vertical pattern, withconsequential drop in detectable signal power.References and Further ReadingFreeman, L. (2007), RadIO S1 1 1el11 DeI/gil fo r Telecol11l11l1lllw/lOlIl, John Wlley & Son" NJ, USA, ISBN978-0-47 1-757 1 3-9Graham, AW ; KIrkman, N c., Paul. PM (2007). MobIle RadIO Nelliork 1 DeslglI 111 lire VHF alla UHF Ballas:A PractIcal Appra(J(lr. John WIley & Som ISBN 0-470-02980-3Hess, G C (1993). Lalld Mobile RadIO SVllell1 Ellgmeenng. Anceh House, ISBN 978-0890066805.For InformatIOn on the map Images used, plea creatlveeommons.org