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  1. The rules define two exposure environments, each with different MPE levels. ... The Amateur Radio Service has a tradition of compliance with FCC regulations; Part 97 is our bible! The ARRL has worked hard to help the FCC fine tune these rules for the Amateur Radio Service. If we hope for more cooperation in the future, we must set the best ...
  2. The H-field limit drops to 1 mW/cm 2 (0.163 A/m) at 100-300 MHz in controlled environments and 0.2 mW/cm 2 (0.0728 A/m) in uncontrolled environments. Higher power densities are permitted at frequencies below 30 MHz (below 100 MHz for H fields) and above 300 MHz, based on the concept that the body will not be resonant at those frequencies and ...
  3. The rules did not change the exposure limits nor the two-tiered exposure environments for controlled and uncontrolled exposure. The controlled limits generally apply to amateurs and members of their household if those people have been given instructions by the amateur about RF safety. The uncontrolled limits apply in all other circumstances ...
  4. For amateur radio enthusiasts, understanding these technologies is crucial, especially in environments with dense signal traffic or where secure, reliable communication is paramount. This chapter serves as a guide to the intricate mechanisms of spread spectrum, shedding light on its applications and advantages in the field of ham radio.
  5. hipcityreg.substack.com

    The amateur environment is the direct-to-consumer-to-consumer. "my producers, are they not my consumer" Software is the ultimate de-materialization tool. Turning entire machines and organizations into pixels. Spreading that light across any hand holding a pocketcomputer.
  6. Much of that effort has involved using WSPR on bands from 2200m through 23cm. My interest has been to first understand the limitations of typical environments and then create practical solutions that might perform as well as can be reasonably expected within an amateur radio context.
  7. Welcome to Reddit's own amateur (ham) radio club. If you are wondering what Amateur Radio is about, it's basically a two way radio service where licensed operators throughout the world experiment and communicate with each other on frequencies reserved for license holders. ... (as it often does in urban environments), using a directional antenna ...
  8. cloudynights.com

    The camera has taken few exposures (theoretically) and in amateur environments with almost no video. I'm making this post as I have no experience with photography equipment overall. I don't think I can request him a proper test and guide him towards it, so I wanted to ask you for help. Many thanks for taking your time.
  9. How do you feel about Yardage Books in Amateur Environments? Equipment Discussion My goal for 2024 is to begin entering a lot more amateur tournaments/events in my area (Wichita). A lot of these events are actually taking place at very nice private golf courses that do not allow non-member golfers to pay/play (except of course during these ...
  10. en.wikipedia.org

    Radio propagation is the behavior of radio waves as they travel, or are propagated, from one point to another in vacuum, or into various parts of the atmosphere. [1]: 26‑1 As a form of electromagnetic radiation, like light waves, radio waves are affected by the phenomena of reflection, refraction, diffraction, absorption, polarization, and scattering. [2]

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