The range R of effective bits within the N bit output from an inner modem is determined and employed to select the M soft bits passed to a channel decoder, thereby avoiding underflow or overflow degrading the channel decoder performance. The high-pressure pump includes a valve selectively placed in an open position to allow the fuel to be introduced into the pump and in a closed position to allow the fuel to be fed under pressure to a high-pressure portion located downstream of the high-pressure pump. The U-shaped anchor extends from a sidewall of the building and at the time of installation may be placed about a permanent upright member such as a utility pole or may be ground staked via holes in the member provided for this purpose. The locking module limits the cover rotation relative to the base.