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1- 900MHz 300 Watt Linear Power Amplifier This is a linear power amplifier used in an AMPS (or CDMA ?) cellular telephone system. Unit is built by Motorola and is their P/N SGTF1038A and is listed as FINAL AMP HI POWER. But, would make a great amateur 902 MHz linear for moonbounce, etc. Has two sets of two stages of gain, first is MRF897 and final is MOT MRF899. Each final is rated at 150 watt (PEP) output in class AB service. Supply voltage is 26 volts. Connector panel is just a drop-in plate and is easily replaced with a customized unit. The circulator on the output is spec'd to 904 MHz. Layout of the RF section is quite straight forward with just Vcc, bias, and I/O connections. Probably does not take more than several watts to drive this thing to full output. Unit weighs 10 pounds and is almost all cast aluminum. The transistors are soldered to a copper heat spreader (that is the same size as the white substrate) that is screwed to the heat sink. Click on any image for a more detailed view. Click on any image for a more detailed view. Click on any image for a more detailed view. Click on any image for a more detailed view. Click on any image for a more detailed view. Click on any image for a more detailed view. * Our hours of operation are M-F 8-5 except 11-12:30 closed for lunch MST (900MHZ 300 watt linear power amplifier MRF897/MRF899 was posted and is owned by: Steven Bowman) |
s.bowman@chicagopartsnetwork.com (Steven Bowman) for more information.