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gatekeep

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Everything posted by gatekeep

  1. I'm not sure the full callsign, mainly because I listen to partial transmissions during commute times when my mobile is in scan mode, but ch 20 on LI is part of the Bridgecom group repeater system. IIRC the couple you keep hearing ID with a partial call of WRAT2xx.
  2. Just a useful note, if your not already aware, that the GR1225 isn't meant for 100% duty cycle at 40W, the PA in the unit will cook itself over time at this power level with moderate usage. Did you happen to note if when the power drops off if the heatsink on the repeater is warm/hot?
  3. While I'm not sure what ch 1, 2 and 3 are on the MXT400; I would assume 17 and 20 are GMRS channels. Ch 17 (462.600) is as JohnE posted, one repeater system. and Ch 20 (462.675) is another system. AFAIK - there are two big groups on LI with repeaters at very high elevations that you would hear from your location. The first one on Ch 17 (462.600) is very very likely https://www.mygmrs.com/networks?action=view&id=272. The other on Ch 20 (462.675) is probably https://www.mygmrs.com/networks?action=view&id=253.
  4. Channel 17 on most blister packs or radios that use Ch #'s have Ch 17 as 462.600.
  5. Not surprising, there are several repeaters on LI that are on really top-notch tower sites and are heard for quite the distance. Based on your location its not impossible for you to be hearing these repeaters full-scale.
  6. Adapters and cables will create a measurable loss. Usually when using something like a service monitor, you'd measure the loss of your cables/adapters before doing actual measurements, so that either the monitor can automatically (if it has such functions) or manually calculate the real world measured values. Technically, if your doing power measurements using a meter like a BIRD or whatever, close enough is usually good enough, and the measured loss from your cables/adapters is negligible and ignorable. Only time you should be concerned is if you get wildly wrong readings, then that could be an indication of a problem.
  7. Its quite possible I'm reading into it /far/ more then necessary. However, the new wording of 95.1749 is perhaps still confusing. Now correct me if I'm wrong, but, the rule literally states "for the sole purpose of operation by remote control", AFAIK the FCC defines "remote control" as: "Under remote control, the licensee has implemented a means by which the repeater’s control operator(s) can monitor and control its operation by some form of control link from one or more distant locations." This says nothing about rebroadcast of voice or other transmissions, which would /seem/ to say that 95.1749 stipulates that using POTS or any network connection for linking where the sole purpose is /control/ is okay, but because of the lack of wording, may or may not mean that use of that link for rebroadcast of voice is legal.
  8. Stun/Kill is used to 'inhibit' a radio, what effectively happens is when a radio capable of MDC receives this command, the radio appears to 'die', the radio isn't actually dead however, it is just sitting in a state of limbo quietly receiving on the frequency that stunned it waiting for a revive command. Yes MDC is capable of performing radio inhibit, typically once inhibited the only way to revive the radio is to either transmit the revive command or other methods involving the factory (or tools if your that kind of person). Revive does the reverse of Stun/Kill which assuming the 'stunned' radio is still turned on, will let the radio resume normal operation. Radio Check is typically sent from another radio to 'ping' (kinda like you would ping an IP on a PC). There are a dozen other commands MDC supports as well such as paging, calling, etc etc. I only described the 3 you asked about.
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