liahju Posted February 14, 2022 Report Share Posted February 14, 2022 We plan to install three repeaters on the same frequency in a triangular geographic location approximately 25 miles apart. All three repeaters are of the same type. Motorola GR1225 10Watt. Question : What problems would this type of installation bring to our Repeater and the other Repeaters in the area? Will we be violating any FCC guidelines on GMRS? . We would appreciate your opinions. Quote Link to comment Share on other sites More sharing options...
WROZ250 Posted February 14, 2022 Report Share Posted February 14, 2022 The correct answer for given the information is it depends/can't be answered with any accuracy... Are they all using the same power, antenna & height above the ground? Basically are you talking about site configurations that mirror each other? Doubt you are violating any FCC rules here in any event. Can't really offer anything but unqualified speculation without more information/detail. liahju 1 Quote Link to comment Share on other sites More sharing options...
gortex2 Posted February 15, 2022 Report Share Posted February 15, 2022 I did a similar design in NY. All 3 repeaters were the same output, however all three used a different input PL. I called it a poor mans voting system. There are similar systems in public safety. Actually our SAR system started the same. Same TX/RX all over the area with different input PL tones. All TX was the same PL. Really need more info as said. liahju and WROZ250 1 1 Quote Link to comment Share on other sites More sharing options...
liahju Posted February 15, 2022 Author Report Share Posted February 15, 2022 13 hours ago, WROZ250 said: La respuesta correcta para la información dada es que depende/no se puede responder con precisión... ¿Están todos usando la misma potencia, antena y altura sobre el suelo? Básicamente, ¿está hablando de configuraciones de sitios que se reflejan entre sí? Duda de que esté violando las reglas de la FCC aquí en cualquier caso. Realmente no puedo ofrecer nada más que especulaciones no calificadas sin más información/detalles. Hace 13 horas, WROZ250 dijo: La respuesta correcta para la información dada es que depende/no se puede responder con precisión... ¿Están todos usando la misma potencia, antena y altura sobre el suelo? Básicamente, ¿está hablando de configuraciones de sitios que se reflejan entre sí? Duda de que esté violando las reglas de la FCC aquí en cualquier caso. Realmente no puedo ofrecer nada más que especulaciones no calificadas sin más información/detalles. WROZ250 The three repeaters are similar in characteristics Motorola gr1225 10 watt the three antennas of the same model and manufacturer in terms of elevation above sea level are relatively the same except for the difference of a few feet. hace 15 horas, liahju dijo: Planeamos instalar tres repetidores en la misma frecuencia en una ubicación geográfica triangular aproximadamente a 25 millas de distancia. Los tres repetidores son del mismo tipo. Motorola GR1225 10w. Pregunta : ¿Qué problemas traería este tipo de instalación a nuestro Repetidor ya los demás Repetidores de la zona? ¿Estaremos violando alguna de las pautas de la FCC sobre GMRS? . Agradeceríamos sus opiniones. Quote Link to comment Share on other sites More sharing options...
PACNWComms Posted February 16, 2022 Report Share Posted February 16, 2022 All the old tricks are new again, just for GMRS at this point. As gortex said, this is common for radio networks when they are first starting out. Similar equipment at each site, and you end up saving on hardware and maintenance since everything is similar hardware wise. Great way to build out a radio network without getting too complicated, and easier for the hosts of the network to maintain and administer. The Motorola GR1225 is a repeater, and 10 watts is not going to strain the hardware. I still have one myself and tend to use it for extending the range of radios when camping (when I am not hiking everything into the camp), more like "car camping".....the one thing to check on the repeaters is the heat conductive paste, that tends to dry out and then you have hardware problems. Keep the fan clean and give that repeater stable power and good coax/antenna and they should serve you well. Good luck on your installation.....post some pictures when you can too. Last thing to add, is a link to the tropospheric ducting thread, as you may have this happen. with three repeaters, that could get very interesting for the times it does happen,if they are on the same frequency, even with different tones in use. gman1971 and liahju 1 1 Quote Link to comment Share on other sites More sharing options...
gman1971 Posted February 16, 2022 Report Share Posted February 16, 2022 Quien es el que esta hablando Español? G. Quote Link to comment Share on other sites More sharing options...
alexd51 Posted February 26, 2022 Report Share Posted February 26, 2022 On 2/16/2022 at 3:44 AM, gman1971 said: Quien es el que esta hablando Español? G. Muchos hablamos español pero no en el forum gman1971 1 Quote Link to comment Share on other sites More sharing options...
gman1971 Posted February 26, 2022 Report Share Posted February 26, 2022 Ah perfecto, perfecto, aqui tambien se habla Español... un saludo. G. liahju and alexd51 1 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You are posting as a guest. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.