Radio Activities
We've been slowing working on getting our antennas back up after the move in early 2018.
We have several antennas and radios available for several bands and projects. This page is here to help track these projects and let folks know what we are doing.
Contents |
Infrastructure
Radio Room / Electronics Room
Since our move in early 2018 we combined the radio desk with the electronics room so that both can be expanded. We have a larger radio bench now which is much less crowded. It is along the back wall of our building for shorter feed line runs to our growing antenna farm and also provides much easier access to our surge suppression/grounding block.
FCC licenced individuals are welcome to use our Ham radio gear. If you want to connect your rig to our antennas on a temporary basis that is fine too. If you want to setup any long term gear that's great, just let someone know that you have an interest and we'll help you get hooked up.
Radios
- Amateur Radio
- Yaesu FT-7800R dual band transceiver
- Yaesu FT-900 HF transceiver (pending hookup)
- Radio Shack HTX-212, 2m transceiver (spare gear)
- Other bands
- Radio Shack Sport CB (pending hookup)
- RX only
- Uniden 996T Digital Scanner
- Realistic Pro-136 Scanner (sub 1GHz)
- Weather radio
Antennas
We are still building out our antennas at our new location as of 2018. This information will probably change quite a bit through 2019.
- Mast 1 - Left-most
- Weather Station - pending, needs some work
- ADS-B airplane telemetry antenna
- room for one more antenna
- Mast 2
- Dual band Diamond 2m/440 whip
- Mast 3
- RX-only / Discone for wide band receiving, LMR-400 coax for low loss
- LNA4ALL Low Noise Amplifier for improved high-frequency receiving
- Coming soon: feeds multiple scanners which stream online
- High quality splitter installed with spare feeds, hook up your RX-only SDR to this!
- Other masts/outdoor antennas being considered:
- SatNOGS station
- Ham HF antenna
- CB antenna
- WiFi dish (24DBi)
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Mast 4-
Cushcraft R-6000 HF antenna
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CB antenna mounted to side of building at the peak, no mast
Grounding Block Demarco
This is now located above the radio desk on the side of the loft area. All of the antenna coax runs go through here and get lightning surge suppression at this spot. There is a grounding plate for all ground attachments and the grounding plate is directly grounded to an outdoor grounding rod. Multiple pieces of equipment hooked to our antennas connect to our network so we have an ethernet surge suppressor here as well.
Additionally, there is another mounting board installed here for attaching infrastructure equipment for the WiFi mesh when needed. There is power and an ethernet hub here and this is also where the ADS-B receiver lives.
Radio Projects
ADS-B receiving station
In April 2015 we were notified that our application to receive and host a free ADS-B receiving station for http://www.flightradar24.com/free-ads-b-equipment was approved. The hardware appears to be a Radarcape embedded system with some of the web features disabled. The real time data feeds still work for local data capturing if desired. The antenna is mounted about 30' high. Members can get our premium login to http://www.flightradar24.com, just email contact at bloominglabs dot org for details.
Manual for FR24 streaming: https://feed.flightradar24.com/fr24feed-manual.pdf
For more information about getting data off our receiver, see Bloominglabs_ADS-B.
Scanner Icecast internet feed
In April 2015 we revieved a Uniden 996T Digital Scanner on long-term loan by a very generous member of the public (now a member). This is a top end scanner that can receive the P25 digital mode used by our local emergency services and elsewhere across our state. We have an Icecast server to stream a feed from this radio so members can listen in remotely.
There are a lot of moving parts to get the scanner feed available at the moment. There is a troubleshooting page here for reference: Scanner.
WiFi Mesh - pending
There have been a number of people/groups interested in setting up various types of wifi meshes in town over the years. As of late 2018 there is a renewed effort which we hope to be able to participate with. If/when we are able to link up to this Ham mesh we will list more details here.
Goals of a mesh
This is very open ended. Firstly, it's just a proof of concept to see if we/anyone can get a reliable link up to connect different parts of town off the grid. The hardest part about this is geography. Bloomington has a big "hump" that runs across the middle of town so it's hard to get the line-of-sight required for wifi. However we have a neighbor which should be linked up to this new mesh system soon... There are multiple ways to implement a mesh, as mentioned above the current lead contender is Ham focused. There is room for multiple mesh networks serving different purposes (ham and part15). However we are interested in working with anyone interested in pushing this project forward.
SatNOGS Ground Station - pending
We have a non-rotator SatNOGS Ground Station in the testing stage here. Our intent is to also get a rotator ground station running sometime this year too. More details to come...
QR code URL
The latest version of this document is always available online.
http://www.bloominglabs.org/index.php/Radio_Activities
