The Amp Hour Electronics Podcast

Chris Gammell and Dave Jones' voices span the chasm of thousands of miles each and every week to speak to each other and industry experts about where the field of electronics is moving. Whether it be a late breaking story about a large semiconductor manufacturer, a new piece of must-have test equipment or just talking through recent issues with their circuit designs, Chris and Dave try to make electronics more accessible for the listeners. Most importantly, they try and make the field of electronics more fun. Guests range from advanced hobbyists working on exciting new projects up through C-level executives at a variety of relevant and innovative companies. Tune in to learn more about electronics and then join the conversation! Visit The Amp Hour website for our back catalog of 150+ episodes.

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#443 – An Interview with JP Norair


Welcome JP Norair of Haystack Technologies!

  • Chris knows JP from the Consulting Forum. Want to join us? Apply here
    • 0h 0m 40s
  • LoRa
    • 0h 1m 49s
  • Chirp Spread Spectrum
    • 0h 1m 53s
  • LoRaWAN
    • 0h 3m 16s
  • The standard initially came from IBM
    • 0h 3m 23s
  • Formed the LoRa alliance
    • 0h 3m 34s
  • Comcast strategy shifting
    • 0h 4m 9s
  • Sigfox was a competitor
    • 0h 4m 55s
  • Senet
    • 0h 6m 53s
  • Campus deployments
    • 0h 8m 44s
  • Moving data on LoRaWAN
    • 0h 9m 25s
  • Was probably meant for meter reading
    • 0h 10m 17s
  • Haystack
    • 0h 11m 30s
  • DASH7
    • 0h 11m 35s
  • Savi
    • 0h 11m 58s
  • Asset tracking on a global scale
    • 0h 12m 49s
  • Exposed to technology standardization
    • 0h 15m 43s
  • iso18000-7
    • 0h 15m 59s
  • People who are contacting are using LoRaWAN and it hasn’t worked
    • 0h 20m 11s
  • QOS means there are packets that are received correctly
    • 0h 21m 21s
  • LPWAN is not that mature
    • 0h 22m 58s
  • Borrowing from space based telemetry
    • 0h 23m 6s
  • Claude Shannon – Information theory
    • 0h 24m 15s
  • There is built in error correction in the LoRa hardware
    • 0h 27m 43s
  • Matt Knight episode from ToorCamp
    • 0h 27m 55s
  • Alphabet soup of standards
    • 0h 32m 26s
  • One of them specifies a convolutional code
    • 0h 32m 35s
  • Soft decision
    • 0h 33m 39s
  • Proprietary stuff sweetens the deal
    • 0h 35m 56s
  • LDPC error correction
    • 0h 36m 9s
  • Startups are willing to take a risk
    • 0h 40m 25s
  • Bigger companies are worried about failing
    • 0h 40m 33s
  • Working with startups
    • 0h 41m 52s
  • Larger businesses are willing to pay for time and materials
    • 0h 42m 1s
  • Payment on milestones
    • 0h 42m 34s
  • Selling hardware allows you to put cost into it
    • 0h 44m 3s
  • Mobile vs fixed
    • 0h 45m 22s
  • Link budget
    • 0h 49m 7s
  • ITU region 2
    • 0h 49m 50s
  • RSSI
    • 0h 51m 41s
  • Fresnel zone
    • 0h 55m 33s
  • SolPad
    • 0h 58m 33s
  • Have to be ready to bounce between full time and consulting
    • 0h 58m 50s
  • Not a solar company
    • 0h 59m 36s
  • Battery backed storage and conversion solutions
    • 0h 59m 40s
  • John from Cree
    • 1h 1m 24s
  • Doing GaN inverters
    • 1h 1m 28s
  • Smaller inductors
    • 1h 2m 9s
  • Roof mounted inverters and batteries
    • 1h 3m 15s
  • Shahriar talking RF
    • 1h 7m 13s
  • Trying to broaden expertise
    • 1h 7m 18s
  • Dash7 over a wire
    • 1h 9m 6s
  • RS485
    • 1h 9m 33s
  • Sometimes wireless feels like it’s actually more reliable than something like RS485
    • 1h 12m 8s
  • JP has a person site called Indigresso
    • 1h 19m 3s
  • Using MATLAB to simulate antennas
    • 1h 20m 28s
  • Johanson antennas
    • 1h 23m 1s
  • Making a different frequency antenna by adding extra wire
    • 1h 24m 11s
  • Start with a higher freq chip antenna and modify it downward
    • 1h 24m 25s


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 May 20, 2019  1h20m