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BoxCar

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Everything posted by BoxCar

  1. BoxCar
    Whatever you end up getting, the outer sheath needs to be UV resistant. Not all coax coverings are.
  2. BoxCar
    There's nothing wrong about a J-Pole. They work, and work well but there are better options with other antennas that offer gain which a J-Pole doesn't.
  3. BoxCar
    You can always try replacing the fan with a different design. It shouldn't be too difficult to find a 12V fan of that size.
  4. BoxCar
    Which radio? there are a lot of the Btechs
  5. BoxCar
    They market the radios under Part 97 (or more likely just broadcast the frequency range and don't worry about the FCC because they aren't within the FCC's jurisdiction).
  6. BoxCar
    You are both still causing interference to the other user. If the signal phases are enough out of alignment you will end up cancelling each others transmission. Yes, the field strength of the pair of transmitters in your example should overpower the other, there is no guarantee it will work as there are just too many variables to consider.
  7. BoxCar
    You can't have more than one concurrent conversation in the same area regardless of tones. They use the same carrier frequency which interferes with others. My radio indicates the channel is busy even though I don't hear the ongoing conversation.
  8. BoxCar
    Way too much for a 360W power supply. This one well supply all you need; MEAN WELL LRS-350-12 DC Switching Power Supply 12V 29A 350W for CCTV, Computer Project, 3D Printer, LED Strip Light, Router
  9. BoxCar
    Then you'll need a quad pole terinium filled filter for your receiver. They're available at Mxltypyx's store on Venus for 400 gold filled latinum bars.
  10. BoxCar
    Almost all public safety systems use repeaters to extend the coverage within their serving area.
  11. BoxCar
    And I'm certain that the first device you used to check an antenna's efficiency was an antenna analyzer. People usually learn to crawl before they do handsprings with advanced level equipment such as the Vector Network Analyzer.
  12. BoxCar
    There are two primary ways to get license totals. I'll lay odds Berkinet filtered the list by asking for active licenses onlt.
  13. BoxCar
    The 6.1 meter or 20 foot rule means the structure is not subject to registration. Towers and poles greater than 20 feet in height are usually listed on the license as the transmitter location. This primarily applies to services where individual frequencies are required to be coordinated which isn't needed for personal or amateur communications. There are other rules that apply such as being near an airport or lighting for antennas more than 20 feet in height.
  14. BoxCar
    Start with a search on the license type specifying your state, county. If it's not there, try looking for the frequency using a B/ILT license type. If you don't find it there, contact the FCC and file an interference complaint from an unlicensed station and give them all the details you can.
  15. BoxCar
    L bracket. Here's one but there are a great many others. Larsen TMB34B GigaParts.com
  16. BoxCar
    Here's a better one. B4505CS Chrome Base Coil Half Wave Antenna - NMO Spring - 450-470 MHz – Arcadian - ArcAntenna.com
  17. BoxCar
    Output power isn't the biggest factor in calculating range, It's antenna height and obstructions. Power does play a good part but it's all about location, location, location. Granted 45W will transmit further than 5W but not that much more than 25W through the same antenna.
  18. BoxCar
    The license holder is required to be in control of the station. How would that control be exercised if the two people where in different locations?
  19. BoxCar
    Usually an unlicensed person can use a GMRS radio if they are in the presence of a license holder being responsible for the operation. That can best be visualized as standing next to the unlicensed person.
  20. BoxCar
    KEN9116
  21. BoxCar
    You'll need a power supply outputting at least 15 amps at 13.8VDC. Lots of inexpensive ones on all the online sites. Even the cheap chinese ones work well.
  22. BoxCar
    It's more of a CYA post by the FCC than anything else. If (that's IF) they arrest someone and they have a radio that is turned on they can make the charge even though they couldn't necessarily prove it unless they have a picture of the person using the radio while committing the offense.
  23. BoxCar
    Many groups use bubble pack and CC Handhelds for communications during mass events. Some of these events are lawful, others may not be as abiding as required for civil obedience purposes.
  24. BoxCar
    One thing I think many would like is an ignore feature where posts from ignored users would not show. The ability to edit your personal ignore list would be required so names could be taken off the list as well as being added.
  25. BoxCar
    Welcome aboard
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