January 18, 2010 - The DR9011R wireless repeater released by Wilkerson Instrument provides more flexibility for its DR9011/DR9021 point to point wireless data acquisition system. A point to point wireless data acquisition system utilizing the DR9011 Transmitter and DR9021 Receiver can provide reliable performance up to 20 miles. However, this performance is based on line of sight conditions between the 2 antennas in the system. When greater range is needed or a building, tank, mountain, or other obstruction must be overcome, the DR9011R Repeater is used to overcome these obstacles. The DR9011R Repeater receives the signal transmitted by the DR9011 and retransmits it on a different Hop sequence for reception by the DR9021.
A different Hop value is used for reception and retransmission so there can be no partial reception of direct signals from the DR9011 to the DR9021. Three radio modules are available for the DR9011 and DR9021, two 900MHz band versions with 7 Hop sequences each and a 2.4GHz band version with 7 Hop sequences. They use spread spectrum, frequency hopping technology. The DR9011R Repeater uses these same radio modules.
With proper antenna and cable selection and a 900MHz band version radio, the DR9011 Transmitter can transmit up to 20 miles to the DR9011R Repeater. The DR9011R Repeater can transmit up to 20 miles to the DR9021 Receiver. The 2.4GHz band version can transmit up to 10 miles from unit to unit.
