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  • Users: rfeng1
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  1. rfeng1

    Hand-held logarithmic antenna needed

    Hi, I would appreciate pointing me to a company / website with hand-held logarithmic antennas, for frequency range ~800 MHz to ~3 GHz. I have seen one, on the Internet, looking like a hand-gun in a black plastic, but I can not find it anymore. Also, I need non-metal tripods. Regards, RFeng1
  2. rfeng1

    Logarithmic handheld antenna needed

    Hi, I would appreciate pointing me to a company / website with hand-held logarithmic antennas, for frequency range ~800 MHz to ~3 GHz. I have seen one, on the Internet, looking like a hand-gun in a black plastic, but I can not find it anymore. Also, I need non-metal tripods. Regards, RFeng1
  3. rfeng1

    FCC Part 15.249

    Hi, I would appreciate helping me with interpretation of the FCC Part 15.249 regulations. Section 249 allows for low power (EM field less than 50 mV/m) devices to operate with a fixed carrier - no spread spectrum. That section points specifically to “fixed” entities. So, the question is … Is a...
  4. rfeng1

    Dipole-coaxial antenna at 915 MHz

    Hi, I see a number of 915 MHz radiocomm systems with a dipole antenna, being fed through one arm of the dipole - coax cable run through a brass pipe, with shield solderd to the pipe (in the middle of the antenna) and the central wire extanding about 1/4 vave length. Actually, most antennas have...

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