Will an AirLink Raven CDPD radio modem be satisfactory?
No, an Airling Raven CDPD radio modem shall be not be used. Currently only Metricom radio modem is specified and its manufactures specifications are available upon request. 57. The electrical plans drawing E14 shows a 334 cabinet to which two MVDS units are connected, and there is a note calling out the requirement for a cluster controller. The cluster controller is not specified in the special provisions. With the AirLink Raven CDPD radio modem, and the software available to Caltrans from AirLink through a separate contract, the need for and function performed by the cluster controller can be done by the AirLink Raven CDPD modem and the AirLink software. The only item we would need to furnish would be a cable configured to allow both MVDS units to connect to the same modem. Additionally, the contractor would need to wire the poll control contact from MVDS pins d and e (wires 17 and 18 on page 265 of the special provisions) in series with the RS232 TX signal output from MVDS pin V (wir
