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Messenger M4V Best Operating Voltage?

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  #9  
Old 04-28-2009, 05:03 PM
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I just read this description about the Metron MA-1000 amp:
"A high speed 75 Amp Magnetic Circuit Breaker protects against short circuits, overdrive, and mismatched antennas. A protective diode will not allow the amp to operate if the supply polarity is accidentally reversed. A 75 degree thermostat mounted on the heatsink will switch off the amp if the temperature becomes excessive."


I have not yet received my M4V - are any of these features in the M4V?

If not do you see a way that they may be added?

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Old 04-28-2009, 05:40 PM
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the m4v has 3 reverse polarity diodes, no thermal switch and no vswr/overdrive protection,

a thermal switch bolts to the heatsink and wires in series with the on/off switch, simple enough if you dont mind making a hole in the board,

overdrive and vswr protection would be a squeeze but it could be added, theres not much room to fit a vswr bridge between the relay board and the output filter, you would also need a suitable circuit and know what you were doing with it.
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Old 04-28-2009, 05:51 PM
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I am guessing that the "high speed 75 Amp Magnetic Circuit Breaker" is sensing current surges and is tripping - an alternative to a superior but more complex VSWR sensing circuit.

WDYT?

I will also need to do something about band-switch filters.

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