Re: [Elecraft] K3: reverse 12 volt supply

2015-09-21 Thread roger wood
A quick note to close off this string: (It did diverge from the topic a bit, but now I know why black was cold in the UK but hot in the US!) Thanks for all the responses and good advice. Much appreciated. I can see there's pros and cons to the various suggestions. I opened the box this weekend

[Elecraft] K3: reverse 12 volt supply

2015-09-13 Thread roger wood
I managed to connect a 12 volt car battery backwards to the K3. There was a lot of smoke and the breaker popped. The RX and TX appear to have survived, however the internal 100 Watt amplifier now shows an over-current fault and quickly switches off. I haven't dared open it up yet - far too