Question about Motorola FV200AA GMRS/FRS 2-Way Radio Walkie Talkie with 5 mile Range

1 Answer

One of both Devices doesn't receive

My name is Guillermo, and I'm from Argentina.
I have 2 Two Way Radio FV200, and the worked perfectly until a few days ago. Now, i have the following problem: i can't receive a transmission from one of the handies (only one). If the number 1 transmits, the number two receives, but if the number two transmits, the number one does not receives.
If I set the "receiving test" (or however its name is) in the menu of the one that does not normally receives, it starts receiving, but just during the time that this function lasts.
Please help me, thank you very much.

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  • guillee2 Feb 12, 2008

    Muchas gracias por responderme. En realidad tengo miedo de que sea esto que me comentas, porque lo abri, y veo que tiene tres presets, uno mas grandecito y facil de mover, y otros dos que son bastante pequeños, y dificiles de mover. Intente moverlos, pero solo logro que la conexion 1 con 2 deje de funcionar.(la 2 con 1 es la que no anda). El radio creo que no tiene modo de eliminacion de ruidos, solo hay una funcion que me deja elegir entre 30, 60 y 90 que no se que es, y otra que tiene una flechita en forma de Z.
    Que significa dejar el SQ abierto?. No se te ocurre algun componente o algo que pueda revisar o cambiar?.
    Desde ya te agradezco muchisimo, y saludos.

  • guillee2 Feb 12, 2008

    Mil gracias por las respuestas. Trate moviendo el preset que esta por debajo de un capacitor en la parte superior de la plaqueta, pero no pude sintonizar nada. Veo un cristal por ahi arriba, pero tampoco encuentro nada que parezca quemado o desconectado Realmente me da mucha impotencia no poder arreglarlo.
    Si se te llega a ocurrir algo, avisame, de todas formas te agradezco enormemente por tu ayuda y tus conocimientos sobre el tema!!!!

  • guillee2 Feb 13, 2008

    Mañana voy a chequear bien el PDF, y tal vez me arriesgue a cambiar el YD3361 si llego al decidirme por pensar que se ha quemado o dañado.
    Te agradezco nuevamente la ayuda, y mis muy sinceras felicitaciones por tus respuestas de altisima calidad.

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Hola
Lo que le llamas prueba de recepcion me parece que es abrir el squelch, me da la impresion que si funciona el radio con el SQ abierto, si recibe en este estado aparentemente tendra problemas con este circuito, este radio si no estoy mal, no tiene codigos de eliminacion de ruido, revisa ese dato ya que para que el radio reciba si posee esta funcion debera de coincidir tanto en canal como en ese codigo.(Mismo canal, mismo codigo en ambos radios).
Revisa si el radio tiene codigos de eliminacion, si no, este radio tendra problemas de SQ, me parece que no podras hacer mucho por el.
Suerte!!

Posted on Feb 12, 2008

  • 1 more comment 
  • Ernesto  Garcia
    Ernesto Garcia Feb 12, 2008

    Hola

    No tengo uno a la mano para decirte que hace cada uno, pero seguro uno sera modulacion, otro sera error de frecuencia, este estara cerca de un Cristal, y el otro puede ser el ajuste de Squelch, squelch abierto es que se escuche el ruido de estatica dejame conseguir uno de este modelo para saber que hace cada uno de estos.

    Lo de 30, 60, 90 es el Timer para apagado, luego de no actividad de apagaran en este lapso de tiempo en minutos, esto es por que es un radio que puede ser usado por niños y evitar que las baterias se descarguen.

    Lo de la Z es Scan para buscar actividad en todos los canales.



    Te escribire cuando tenga informacion



    Saludos

  • Ernesto  Garcia
    Ernesto Garcia Feb 12, 2008

    Hola

    El preset que esta cerca de la antena, es el ajuste de SQ trata de bajar la intesidad, giralo a la izquierda, ten cuidado que no tienen tope, si puedes marcalo con un tinte para que sepas donde estaba, si no funciona, creo que tendras que reemplazar el chip que esta cerca de este preset.



    suerte!!

  • Ernesto  Garcia
    Ernesto Garcia Feb 12, 2008

    Revisa este PDF, talvez te ayude, lamentablemente no hay diagramas especificos para estos radios, es muy poco lo que se puede hacer por ellos



    http://www.datasheetarchive.com/preview/...



    Saludos

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