VSWR

Hello,
VSWR (Voltage Standing Wave Ratio), is a measure of how efficiently radio-frequency power is transmitted from a power source, through a transmission line, into a load (for example, from a power amplifier through a transmission line, to an antenna). In an ideal system, 100% of the energy is transmitted.

VSWR not only affects the efficient transmission of power but can have a severe effect on the transmitted audio. As a result of a mismatch, there is a portion of the RF signal that is reflected back towards the transmitter. When this reflected signal reaches the transmitter, it is reflected back towards the load.

If the VSWR is too high, there could potentially be too much energy reflected back into a power amplifier, causing damage to the internal circuitry. In an ideal system, there would be a VSWR of 1:1. Causes of a high VSWR rating could be use of an improper load or something unknown such as a damaged transmission line.

Thanks

Dear

        As shown in above photo the high value leads to loss radio signal and affect on cell availibility and also may also leads to down cell so its clear that VSWR affect on service

thanks

Thanks

is DTF test support bts 3900A 3g?

yes

alway give us the following error

"error returned from NE. the specified boad does not support this function "
WRFU

May be site locked or sector locked at this time no VSWR/DTF reading can be obtained

shall we apply any other parameter to make it work.

thanks!