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Messenger M4V Best Operating Voltage?

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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.

tom bearden taught me that quantum entanglement allows thought to travell faster than the speed of light, this explains why at first you can think somebody is smart but if you wait a while you will see they are not very bright at all.

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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.


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

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