The MHP 200 is an ultra low-noise Masthead-Preamplifier with coaxial relay changeover capable of handling SSB RF-Power levels of up to 1500 Watts (750W CW).
The integral coaxial-relays have succesfully been tested up to 2 KW SSB and feature large goldplated contact areas with extremely low insertion loss (0.1dB). Double shielded Teflon coaxial cables are used in order to guarantee a low losses and a high power handling capability.
There is no RF-VOX and protection circuits in the MHP 200R so a sequencer such as the DCW 2004B or amplifier with integral sequencer MUST be used.
With the MHP200-R power is supplied via a BIAS-T feed up the coax. Note this unit is NOT RF SWITCHED. The Bias-T feed is to provide power to the unit without the need for a separate supply feed up the mast. The unit still needs to be sequenced correctly to ensure that the device is not damaged in the same way you would do with any non RF-switched masthead device.
Frequency range: 144-146 MHz
Noise figure typ.: 0.3 dB
Gain typ.: 24 dB
Max. power SSB/CW: 1500 / 750Watt
Insertion loss: 0.1 dB
Supply voltage: 13.8 V
Current consumption: 440 mA
Max. Mast diameter: 58 mm