{"id":5861,"date":"2013-01-09T10:03:54","date_gmt":"2013-01-09T14:03:54","guid":{"rendered":"http:\/\/www.engineeringradio.us\/blog\/?p=5861"},"modified":"2023-04-08T20:21:38","modified_gmt":"2023-04-09T00:21:38","slug":"nanobridge-m5-wireless-lan-link-part-ii","status":"publish","type":"post","link":"https:\/\/www.engineeringradio.us\/blog\/2013\/01\/nanobridge-m5-wireless-lan-link-part-ii\/","title":{"rendered":"Nanobridge M5 wireless LAN link, Part II"},"content":{"rendered":"\n

After a bit of delay, we were able to return to the WICC transmitter site to install the Wireless LAN link.\u00a0 The installation was pretty straightforward.\u00a0 The studio unit was mounted on an existing STL tower on the top of the elevator room, the transmitter unit was mounted on an existing pipe on the roof of the transmitter building.<\/p>\n\n\n\n

\"M5<\/a>
M5 Nanobridge mounted on transmitter building with RADOME<\/figcaption><\/figure>\n\n\n\n

I included RADOMEs for a couple of reasons; first, there is a lot of critters around of the two-legged and winged kind. The upright two-legged critters may be attracted to the signal-strength lights at night. This unwanted attention could invite the juvenile delinquent’s bored teenagers to throw various objects found laying around on the ground at the antenna, damaging it.\u00a0 The winged type critter may be inclined to view the feed horn as a good nesting location. The other reason is this site gets a lot of rain, wind, ice, and snow, therefore the RADOMEs afford some protection against the weather.<\/p>\n\n\n\n

Aiming the antennas was pretty straightforward, but requires at least two people.\u00a0 Using landmarks, we aligned the dishes in the general direction of each other.\u00a0 Both ends of the system were turned on and we had a -89 dBm signal path, and somewhat surprisingly, the radios linked up and my laptop grabbed an IP address via DHCP.\u00a0 Using the signal strength meter on the side of the antenna, each dish was peaked in turn:<\/p>\n\n\n\n

\"M5<\/a>
M5 Nanobridge Antenna signal strength meter<\/figcaption><\/figure>\n\n\n\n

Then, somebody on either end went below and looked at the signal strength screen on the web interface while the other end peaked.\u00a0 In the end, we had about -65 dBm signal strength, which is somewhat less than the -58 dBm predicted.\u00a0 I think we can do better, so on the next clear day, I am going to peak the signal again.<\/p>\n\n\n\n

The data rate initially reported was over 100 MBPS, however, once I started transferring files back and forth, that dropped to about 50 MBPS.\u00a0 If it is raining, that rate drops to about 35 MBPS, which is still far above what we need this link to do.\u00a0 As a test, I streamed a youtube video, downloaded a Windows update, loaded several web pages, and checked my email simultaneously.\u00a0 There were no issues with the data rate while those tasks were being preformed.<\/p>\n\n\n\n

It is quite amazing to me that these little inexpensive radios can work so well.\u00a0 My boss thinks that they will be blown up by lightning during the first thunderstorm of the season.\u00a0 I don’t know.\u00a0 There are several of these units have been installed at mountaintop tower sites and have been working for several years without issue.<\/p>\n\n\n\n

Next step, installing the IP cameras and warning signs on the fence, setting up the monitoring software, etc.<\/p>\n\n\n\n

\"Transmitter<\/a>
Transmitter site security cameras<\/figcaption><\/figure>\n\n\n\n

Cameras mounted on old chimney platform.\u00a0 This is the first set of cameras covering the south, north, and west approaches.\u00a0 A fourth camera will be mounted on the back of the building covering the east approach.\u00a0 Then, under the eves’ cameras will be mounted on all four corners of the building and the generator shed.\u00a0 If anything moves, it will be recorded.<\/p>\n","protected":false},"excerpt":{"rendered":"

After a bit of delay, we were able to return to the WICC transmitter site to install the Wireless LAN link.\u00a0 The installation was pretty straightforward.\u00a0 The studio unit was mounted on an existing STL tower on the top of the elevator room, the transmitter unit was mounted on an existing pipe on the roof … Continue reading Nanobridge M5 wireless LAN link, Part II<\/span><\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[260,4],"tags":[18,158,187,62],"class_list":["post-5861","post","type-post","status-publish","format-standard","hentry","category-it","category-tech-stuff","tag-am-transmitter-site","tag-aoip","tag-network","tag-stl"],"_links":{"self":[{"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/posts\/5861","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/comments?post=5861"}],"version-history":[{"count":12,"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/posts\/5861\/revisions"}],"predecessor-version":[{"id":11468,"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/posts\/5861\/revisions\/11468"}],"wp:attachment":[{"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/media?parent=5861"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/categories?post=5861"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/tags?post=5861"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}