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Showing content with the highest reputation on 05/30/16 in all areas

  1. n4gix

    DMR Repeater on GMRS?

    I cannot believe this. There is a repeater owner in NJ who is setting up a DMR repeater on 462.725... http://www.mygmrs.com/view?id=2197 https://twitter.com/JCRepeater2 Of course, he seems a bit confused since he keeps referring to it as DMR/P25... It can be one or the other, but certainly not both! It is totally illegal of course, but you can't tell some folks the truth. They simply won't believe you.
    1 point
  2. Also, many GMRS repeaters require permission from the owners and/or paid membership. Sent from my LG-D631 using Tapatalk
    1 point
  3. I sure wouldn't want mine living under my roof.
    1 point
  4. zap

    Huge repeater

    Power doesn't always translate to distance. A couple of things to remember, the biggest attenuator to FM communications is the ground. Path loss on a 50W GMRS radio, a commercial grade receiver, and 1/4 wave antennas is nearly 6000 miles. However, this number goes south quickly when you start talking about punching through urban environments, trees, hills, etc. With GMRS, you're pretty much guaranteed a successful transmission if there is unobstructed line of sight. More power means greater risk for desensing the receiver (what good does it do to have a repeater that can be heard for 100 miles but only talked to for 35?) which means adding extra filters, more antenna separation, etc. The 675 and 700 repeaters in Lubbock. The 675 repeater is on the tallest building for 120 miles. The antenna is 360 feet off the ground. It's running 50W at the transmitter and 40W at the antenna (which is a DB420).That's 477W ERP. It fizzles out about mile marker 41 on I27 (it's located at marker 4 roughly). The 700 repeater is a good 70 feet below it running 32W (23W at the DB420)...it fizzles out around mile marker 38. The two sites are 1000 feet away from one another. 70 feet is what mainly makes up that extra 3 miles. 95% of the time, you'll never notice the difference between a repeater running 200W or one running 25W if it's in a good location.
    1 point
  5. deputycrawford

    Huge repeater

    Thanks for the words to keep the post going the right way. I read back through it and want to answer a couple questions. We do not have a travel tone on the repeaters yet. Tim has to get his Motorola MSR2000 repeater up there so he can use his good controller. When he use his controller remotely he will add a travel tone to it. We have both of them registered on this site. He might get to the Paulding site first, so he will get that one running first, but he hopes to get the Sandusky, Ohio site up soon and put a travel tone on it. It will be an open repeater for all to use. I will read back through this thread again but I might have mentioned Tim retired from a two way mobile company as their main tech. He still helps them out a bit so the owner has allowed him to put up the GMRS repeaters at commercial sites with most being at the 400 Ft area. All on commercial towers, or tall buildings, and all 7/8 hard line and Super Station Masters already in line. The two way radio company owner has allowed all sites for free, including the use of the antennas etc., and Tim helps him out by doing a repair, or new install, for free once in awhile. Jerry
    1 point
  6. PastorGary

    Huge repeater

    Quarterwave - everything is cool at your end and we sent you a PM regarding the situation to which you have responded to. We will only say this one more time in the open before the staff here takes punitive action: We DO NOT want to see any posted suggestions regarding BLATANT** unlawful operation - such as over power being an "OK - who cares" situation, Ham equipmment being used on GMRS frequencies and so on. Any further postings of this type will trigger an automatic staff response which may decrease our membership by one, as well as being removed from the main website registration. The suggestions made by the individual in question may also potentially stir the interest of the Commission because the Commission IP address shows up occasionally as a guest here and the call sign of the person is clearly visible. Need we say more? The MyGMRS staff ________________________________________________________________________ [** ref: the Part 90 equipment in Part 95 service is not a blatant issue as of this time and is still on the table for discussions as usual.]
    1 point
  7. PastorGary

    Huge repeater

    Thanks, Jerry - Sounds as if that system might have more usable range than the local Sheriff's system... but, that is common with many GMRS systems.
    1 point
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