1656.5-1660.5 Concern was expressed that TRS systems this band would suffer high levels of interference from the incumbent satellite systems which would make the band unusable. A monitoring campaign, detailed below, was undertaken to clarify the risk of interference. Over 600 hours of monitoring in various sites in six countries have shown only noise floor reception with no high level adjacent band signals. It can therefore be expected that TRS will not suffer high levels of interference from satellite system. Monitoring Telescopic antenna supplied with the SA 44B where considered "worse case" as they are omnidirectional and will have higher all round reception then either the low power base station or the body worn units, both of which will be directional. Table 18: Measurement results Hours Hours Measurement Outcome of the Equipment used measuring measuring Location and dates measurements indoors outdoors Signal Hound spectrum analyser SA44B 1Hzto Bergen, Norway noise floor only 4.4GHz USB connected to a 12 4 -102 approximately April 2016 Dell laptop E6540, using the supplied telescopic antenna Both Signal and Some 650 hours of Marconi model 2390, 9 monitoring from January no satellite signals Oxford, UK GHz spectrum analyser. until March 2017 both only floor Antenna telescopic and indoor and outdoor using reception 8 dB directional both antenna types Signal Hound spectrum Luxembourg on 30 analyser SA44B 1 Hz to 4.4 noise floor only -95 January - 3 February GHz USB connected to a 16 6 approximately 2017 Dell laptop E6540, using the supplied telescopic antenna Signal Hound spectrum ETSI Sophia Antipolis analyser SA44B 1Hzto on 20-24 February noise floor only 4.4GHz USB connected to a 28 4 2017 and on 4-7 Dell laptop E6540, using the 2017 supplied telescopic antenna ECO, Copenhagen on Signal Hound spectrum 22-24 March 2017 for analyser SA44B 1 Hz to 4.4 No satellite signals indoor measurements; GHz USB connected to a 20 received only Mercure Hotel, Dell laptop E6540, using the floor reception. Copenhagen for supplied telescopic antenna outdoor measurements Lake District, UK, on Signal Hound spectrum 25-30 2017 both analyser SA44B 1Hzto indoors and a variety of 4.4GHz USB connected to a 28 hours See Table 19 outdoor sites up to Dell laptop E6540, using the 1600 feet supplied telescopic antenna
1656.5-1660.5 Concern was expressed that TRS systems this band would suffer high levels of interference from the incumbent satellite systems which would make the band unusable. A monitoring campaign, detailed below, was undertaken to clarify the risk of interference. Over 600 hours of monitoring in various sites in six countries have shown only noise floor reception with no high level adjacent band signals. It can therefore be expected that TRS will not suffer high levels of interference from satellite system. Monitoring Telescopic antenna supplied with the SA 44B where considered "worse case" as they are omnidirectional and will have higher all round reception then either the low power base station or the body worn units, both of which will be directional. Table 18: Measurement results Measurement Location and dates Equipment used Hours measuring indoors Hours measuring outdoors Outcome of the measurements Bergen, Norway April 2016 Signal Hound spectrum analyser SA44B 1Hzto 4.4GHz USB connected to a Dell laptop E6540, using the supplied telescopic antenna 12 4 noise floor only approximately Oxford, UK Both Signal and Marconi model 2390, 9 GHz spectrum analyser. Antenna telescopic and 8 dB directional Some 650 hours of monitoring from January until March 2017 both indoor and outdoor using both antenna types no satellite signals only floor reception Luxembourg on 30 January - 3 February 2017 Signal Hound spectrum analyser SA44B 1 Hz to 4.4 GHz USB connected to a Dell laptop E6540, using the supplied telescopic antenna 16 6 noise floor only -95 -102 approximately ETSI Sophia Antipolis on 20-24 February 2017 and on 4-7 2017 Signal Hound spectrum analyser SA44B 1Hzto 4.4GHz USB connected to a Dell laptop E6540, using the supplied telescopic antenna 28 4 noise floor only ECO, Copenhagen on 22-24 March 2017 for indoor measurements; Mercure Hotel, Copenhagen for outdoor measurements Signal Hound spectrum analyser SA44B 1 Hz to 4.4 GHz USB connected to a Dell laptop E6540, using the supplied telescopic antenna 20 No satellite signals received only floor reception. Lake District, UK, on 25-30 2017 both indoors and a variety of outdoor sites up to 1600 feet Signal Hound spectrum analyser SA44B 1Hzto 4.4GHz USB connected to a Dell laptop E6540, using the supplied telescopic antenna 28 hours See Table 19