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| Note the new, larger heat-sink and its position |
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| Automatic antenna changeover circuit |
The mosfet has now been fitted to a larger ( 4.5degC/W ) heat-sink for better cooling, and repositioned to make device replacement much quicker and easier than before, should it again be necessary !
I've also added a circuit for 'rf voltage sensed' automatic antenna changeover switching which is a much more convenient arrangement than a manually operated coax switch which I was using.
By the way, my 'countries worked' total on the 475KHz / 630m band has now risen to 14.
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