[Elecraft] Update: K3 Hard of Hearing

[Jack Brindle]

John;

It sounds like it is time to call tech support to see if they can help. They are pretty good at figuring out what happened and how to fix it.
Trying the second K3 in its place, and it works fine, tells me that you may have an issue in the front end. But they will know better.
Good luck getting it working properly!

73!
Jack, W6FB


> On Jan 21, 2020, at 5:02 PM, John Unger <w4au.john at gmail.com> wrote:
> 
> Transmit works fine, Martin.
> 
> On Tue, Jan 21, 2020 at 7:46 PM Martin Sole <hs0zed at gmail.com> wrote:
> 
>> Is the transmit working okay?
>> 
>> Don’t recall if you mentioned before.
>> 
>> My early K3 suffered 0.1uf capacitor failure causing loss of injection
>> which affected both tx and rx. Another cap failure caused loss of tx only
>> due to shorted switching voltage. Both were on the RefOsc board.
>> 
>> 
>> 
>> Sent from my iPhone
>> 
>>> On 22 Jan 2020, at 02:42, John Unger <w4au.john at gmail.com> wrote:
>>> 
>>> Wow, guys, thank you all for the suggestions of things to check, but
>> still
>>> no joy...
>>> 
>>> Here's your suggestions that I have checked:
>>> voltage - 13.6
>>> RX ANT not on
>>> I uploaded a couple of old config files - not change
>>> Turning RF GAIN fully CCW puts SWR meter at full scale
>>> My other K3 hears FB on all the antennas
>>> This K3 doesn't have an ATU
>>> Switching an antenna in and out makes no apparent difference in received
>>> signals
>>> No change in BP filters; they have been working fine for long time.
>>> 
>>> I do operate SO2R. The last time radio was working OK was during the NAQP
>>> CW contest where I was running 100W. I have operated KW amps in the past
>> on
>>> each radio without any front end problems (but there's always the first
>>> time, right?).
>>> 
>>> Thanks again for the help
>>> 
>>> 73 - John, W4AU
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>> 
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