asu stands for radio energy in signal strength.
what does asu stand for in signal strength?
radio energy
various signal booster systems are manufactured to reduce problems due to dropped calls and dead zones. many options, such as wireless units and antennas, are intended to aid in strengthening weak signals.





























section::::asu.





























arbitrary strength unit (asu) is an integer value proportional to the received signal strength measured by the mobile phone.





























it is possible to calculate the real signal strength measured in dbm (and thereby power in watts) by a formula. however, there are different formulas for 2g, 3g and 4g networks.





























in gsm networks, asu maps to rssi (received signal strength indicator, see ts 27.007 sub clause 8.5).
mobile phone signal
with a relatively high power of , the dcf77 transmissions can reliably be received in large parts of europe, as far as from the transmitter in mainflingen. within this range the signal strength of the dcf77 signal as specified by the physikalisch-technische bundesanstalt (ptb) is ≥ 100 µv/m. this signal strength assessment was made according to the reflection model with a reflection (one hop) on the ionospheric d-layer. as an example, reception with consumer grade clocks — assuming the employed radio clock can manage reception with ≈ 100 µv/m signal strength — is possible in norway (bodø), russia (moscow), turkey (istanbul), gibraltar and portugal (during night hours). metal structures or interference caused by other electronic devices can cause reception problems within this range. at shorter distances the dcf77 signal strength is much higher. as an example, under from the transmitter in mainflingen the expected signal strength of the ground wave is ≥ 1 mv/m.
dcf77