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<blockquote data-quote="smoggy07" data-source="post: 978535" data-attributes="member: 298987"><p>I've just had a smart meter fitted, it uses a SIM Card for the WAN and something like zigbee for the HAN (local connection between the electric meter and gas meter and the connection from the elec meter to the in home display), I think it creates a hidden short range 5Ghz wifi network, I'll have to rig up netstumbler or something to have a looksee</p><p></p><p>Pagers are like DVB or DAB, all or nothing with glitches here and there, you might need to mess with the volume on the VAC</p><p></p><p>Is the noise bleeding over like flex but in short bursts? If it is, check out <a href="http://www.kb9ukd.com/digital/mpt_1327.wav" target="_blank">http://www.kb9ukd.com/digital/mpt_1327.wav</a> MPT1327 trunked, I'll bet a pound to a penny it is, the nation grid still use shared control channels in the 137Mhz range, one station broadcasts it's network ID, followed by the next station in line, and so on.</p><p></p><p>You need yet another software, trunkview, this can follow the control channels broadcasts and show their network IDs and on the remote chance that it receives a goto voice channel instruction, it should route the SDR to the voice channel so you can monitor whats said.</p><p><a href="http://www.linato.net/trunkview/" target="_blank">- TrunkView :: MPT1327 Protocol decoder -</a></p><p></p><p>You'll be able to ID the remote sites but won't hear a lot of voice at all, maybe one voice call per night at daft o'clock in the morning</p><p></p><p>You'll find a few trunked nets on VHF between 160Mhz and 170Mhz between the taxi data (I have a decoder for that too) and you'll find the odd one on UHF between 440 and 460Mhz</p><p></p><p>If you use this for working out the base frequency/logical band plans, it'll know what channel numbers are on what freq, then it should (if it can control your SDR) jump to the voice channel, going back to the control channel after decoding the cleardown message <a href="http://www.linato.net/trunkview/?findbase" target="_blank">- TrunkView :: MPT1327 Protocol decoder -</a></p><p></p><p>[EDIT] See here <a href="http://ukradioscanning.com/viewtopic.php?f=4&t=2891" target="_blank">UK Radio Scanning Forum • View topic - National Grid/power line work frequencies?</a></p></blockquote><p></p>
[QUOTE="smoggy07, post: 978535, member: 298987"] I've just had a smart meter fitted, it uses a SIM Card for the WAN and something like zigbee for the HAN (local connection between the electric meter and gas meter and the connection from the elec meter to the in home display), I think it creates a hidden short range 5Ghz wifi network, I'll have to rig up netstumbler or something to have a looksee Pagers are like DVB or DAB, all or nothing with glitches here and there, you might need to mess with the volume on the VAC Is the noise bleeding over like flex but in short bursts? If it is, check out [URL]http://www.kb9ukd.com/digital/mpt_1327.wav[/URL] MPT1327 trunked, I'll bet a pound to a penny it is, the nation grid still use shared control channels in the 137Mhz range, one station broadcasts it's network ID, followed by the next station in line, and so on. You need yet another software, trunkview, this can follow the control channels broadcasts and show their network IDs and on the remote chance that it receives a goto voice channel instruction, it should route the SDR to the voice channel so you can monitor whats said. [URL='http://www.linato.net/trunkview/']- TrunkView :: MPT1327 Protocol decoder -[/URL] You'll be able to ID the remote sites but won't hear a lot of voice at all, maybe one voice call per night at daft o'clock in the morning You'll find a few trunked nets on VHF between 160Mhz and 170Mhz between the taxi data (I have a decoder for that too) and you'll find the odd one on UHF between 440 and 460Mhz If you use this for working out the base frequency/logical band plans, it'll know what channel numbers are on what freq, then it should (if it can control your SDR) jump to the voice channel, going back to the control channel after decoding the cleardown message [URL='http://www.linato.net/trunkview/?findbase']- TrunkView :: MPT1327 Protocol decoder -[/URL] [EDIT] See here [URL="http://ukradioscanning.com/viewtopic.php?f=4&t=2891"]UK Radio Scanning Forum • View topic - National Grid/power line work frequencies?[/URL] [/QUOTE]
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