[Elecraft] K2 Only 30-metre Band Works

[VA1CQ]

Hi Don,

I forgot to add my name or call on my last post. I agree with that policy.

Yes, the K2 seems to be fully operational on 30 metres. I even briefly 
tried setting 10 W transmit power and it actually transmitted at 10 
watts. I was able to tweak the 30 metre bandpass filter and I could see 
the transmit power reaching a peak and then decreasing as I tuned. I see 
this same effect when receiving from the antenna on 30 metres.

I already know that on the bands which are not operating (all except 30 
metres) that tuning the bandpass filters has no effect on either 
transmit output or on receive signal levels from an antenna. Adjusting 
the filters produces no RF voltage at W6. Regardless how I tune the 
filters, the K2 indicates the transmit power is 0.1 to 0.2 watts. It 
never changes.

I notice that my 8 volt regulator output is 7.6 volts. Considering I am 
using an input voltage to the transceiver of 13.6 volts, isn't 7.6 volts 
a little low for a regulated output? By comparison, the 5 volt regulator 
output is 4.92 volts. The manual suggests current draw may be too large 
if the 8 volt line drops to 7.5 volts or lower. The manual even suggests 
changing the regulator if a reason can't be found for its voltage being 
below 7.5 volts.

73,
Murray VA1CQ


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