4 ms·

From what I am reading, it runs on Multi-Use Radio Service (MURS). i.e. 151-154 Mhz spectrum. Excerpt From https://apps.fcc.gov/edocs_public/attachmatch/FCC-02

From what I am reading, it runs on Multi-Use Radio Service (MURS). i.e. 151-154 Mhz spectrum. Excerpt From https://apps.fcc.gov/edocs_public/attachmatch/FCC-02-139A1.pdf https://apps.fcc.gov/edocs_public/attachmatch/FCC-02-139A1.p... Under the revised rules, MURS units are: • Permitted to have detachable antennas; • Permitted to have external antennas up to 6.1 meters (20 feet) above a structure or 18.3 meters (60 feet) above the ground, whichever is higher; • Permitted to have a total power output (TPO) of up to two (2) watts (instead of two (2) watts effective radiated power); • Not permitted to be used as cordless telephones, radiofacsimile (imaging), or for continuous carrier mode operations; and • Not permitted to be used for repeater operations Without a repeater, I would assume it is very difficult to imagine a hop-by-hop network?

bravo22 12y ago
The larger antenna would certainly suggest the lower frequency.
mng2 12y ago
They also explicitly forbid store-and-forward operations.
- 0xdeadbeefbabe 12y ago
  Unless it is very fast store-and-forward?
  - cdcarter 12y ago
    Unfortunately, both acting as a repeater live and in SaF mode are prohibited.
- lepht 12y ago
  Can anyone provide some insight into why this would be? What's the intention of these restrictions?
  - spacefight 12y ago
    Theoretical capacity on the bands maybe?
  - meatmanek 12y ago
    In the PDF that nitinics linked, https://apps.fcc.gov/edocs_public/attachmatch/FCC-02-139A1.pdf https://apps.fcc.gov/edocs_public/attachmatch/FCC-02-139A1.p..., check out the bottom of page 13. Because repeaters utilize two channels at once (input and output) and extend the operating range of a single user, their use would limit the number of users able to share these frequencies at the same time. ... some commenters are concerned that MURS frequencies will be congested and that repeater use will only aggravate this problem. We agree. Basically, they want to maximize the number of users that are able to reasonably use this band. At the time (1998-2002), two-way radios were much more popular than they are today (cell phones have largely made them obsolete), so I can understand the concern. For whatever reason, MURS never did became as popular as GMRS or FRS did.

bravo22 12y ago

The larger antenna would certainly suggest the lower frequency.

mng2 12y ago

They also explicitly forbid store-and-forward operations.

0xdeadbeefbabe 12y ago
Unless it is very fast store-and-forward?
- cdcarter 12y ago
  Unfortunately, both acting as a repeater live and in SaF mode are prohibited.
lepht 12y ago
Can anyone provide some insight into why this would be? What's the intention of these restrictions?
- spacefight 12y ago
  Theoretical capacity on the bands maybe?
- meatmanek 12y ago
  In the PDF that nitinics linked, https://apps.fcc.gov/edocs_public/attachmatch/FCC-02-139A1.pdf https://apps.fcc.gov/edocs_public/attachmatch/FCC-02-139A1.p..., check out the bottom of page 13. Because repeaters utilize two channels at once (input and output) and extend the operating range of a single user, their use would limit the number of users able to share these frequencies at the same time. ... some commenters are concerned that MURS frequencies will be congested and that repeater use will only aggravate this problem. We agree. Basically, they want to maximize the number of users that are able to reasonably use this band. At the time (1998-2002), two-way radios were much more popular than they are today (cell phones have largely made them obsolete), so I can understand the concern. For whatever reason, MURS never did became as popular as GMRS or FRS did.