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September 16, 2015

posted Sep 23, 2015, 8:37 AM by Devin Trejo   [ updated Sep 23, 2015, 8:52 AM ]

Members in attendance                           

Devin, Robert, Tyler, Silage

Previous Tasks

Tyler/Rob were previously was tasked with gathering information on testing practices for signal loss over cable. Devin was to setup the two Pis we have to see what capabilities the HSMM-Pi project: ( project has. Silage was to obtain the type of coax we have running to the roof and see if he can find source code for the HSMM.

New Tasks 


  • Investigate line loss (continued)
    • Over 300ft Coax Cable.
    • Over 300ft of Ethernet Cable
    • From the outcomes research amplifiers needed to get a signal to the roof. 


  • See how resourceful the Github project: will be to us. For example, is it compatible with HSMM?


  • Robert is working on getting his amateur radio licence.
  • Work with Tyler in transmission of signal from 7th floor to roof.
  • Find a enclosure to house the router/pi on the roof. Also think of a way to life-cycle test the enclosure we will house on the roof. 


  • Look into how we spend SD funds. 
  • Further research into finding HSMM source code. 

Meeting Summary

To begin we learned Silage was not able to find code for the HSMM project. He mentioned he had some prevailing emails he was awaiting response from but had little hope in finding the code. Silage then led us to the Amateur Radio lab to look at the cables he has running to the roof. Recall from last week we stressed the imnportance of signal loss over the long lengths of wire we will have to run to the roof. We documented we have the following:
  • 8 Conductor Cable
  • LMR600 (x2)
  • RG-213 (x1)
The other aspect of the project to accomplish now is the life-cycle testing of our enclosure that will be housed on the roof. The group is to get in touch with various professors to see what equipment we already have on hand. For example testing under heated/cold environments. Are there thermocouples we can use?

The goal is to run a baseline test for testing the HSMM project. For example, we have already tested within the lab showcasing we can communicate over a short distance between the two Linksys routers. The next goal is to put high power antennas on the roof and see if we can communicate over campus. Of note, to communicate over high power we will need to soon acquire our amateur radio licenses. 

Also as far as the HSMM-PI project is concerned we ran into a problem where one of the SD cards we have for the Pi is too small. The 4GB limit was filled so we were not able to load the HSMM-Pi project successfully on this Pi. The other Pi came with a 8GB MicroSD card and we were able to get the HSMM-PI project running on that. To next step is to see if we can find a larger MicroSD for the other Pi. Then we want to test to see if HSMM-Pi is compatible with the HSMM firmware running the on the Linksys routers. If we can successfully communicate then we will see what features we can add to HSMM-PI.