ePMP Force 180 not getting good signal

[Davostick]

Good day all,

I have an ePMP F180 device connected to one of my ISPs cambium sector. Radio was installed at an RSSI of -56dBm around April,2020.

Surprisingly, the radio can no longer get a good RSSI greater than -70dBm as at today even when the sector is in clear sight.

What can be done to fix this?

Thanks.

[Fedor]

Hi,

I would suggest checking eAlign tool to see if there is RSSI mismatch between chains Ch0/Ch1.

Thank you.

[Davostick]

Thanks for your reply, how do I check for mismatch?
This issue has become very rampant.

[MikeMGR]

Nosotros tambien hemos tenido este problema con decenas de SM force 180, se debe a una falla de fabrica, pero mi proveedor no me apoyo con los RMA, dicen que no aplicaban a garantia. Aclaro que solo es este modelo que tiene este sintoma tan raro, tenemos miles de SMs de la familia ePMP por ello nos dimos cuenta a demas de pruebas exahustivas para demostrar a nuestro proveedor incluso con CNMaestro como fuente de datos reales.

El problema es una degradacion en modulo del RF, tenemos pruebas con varios SM en el mismo sitio con la misma señal, pero los SM dañados dan mucho menor valor de RSSI a demas que tienen potencia de trasmision alta, los demas SM en buenas condiciones en mismo sitio de prueba dan la señal provista por el linkplanner o mejor aun.

Saludos!

We’ve also had this problem with dozens of SM Force 180s. It’s due to a manufacturing defect, but my supplier didn’t support me with the RMA, saying it wasn’t covered under warranty. I want to clarify that only this model has this unusual symptom. We have thousands of SMs from the ePMP family, which is why we discovered it, in addition to exhaustive testing to demonstrate it to our supplier, even using CNMaestro as a source of real data.

The problem is a degradation in the RF module. We have tests with several SMs in the same location with the same signal, but the damaged SMs show a much lower RSSI value and also have high transmission power. The other SMs in good condition, in the same test location, give the signal provided by Linkplanner, or even better.

Regards!