[Elecraft] K3 with subrx - intermittent main RX problem and pwr out

[Matt Zilmer]

That's what seemed like a normal language difference to me too.  Thanks, 
Bill.

73,

matt W6NIA


On 5/4/2017 7:11 PM, Bill Johnson wrote:
> Matt, a difference in the language.  I would take them to be the same.
>
> 73,
> Bill
> K9YEQ
>
> -----Original Message-----
> From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Matt Zilmer
> Sent: Thursday, May 4, 2017 11:44 AM
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] K3 with subrx - intermittent main RX problem and pwr out
>
> Sorry to be thick....  Is a dry joint same as a cold joint?
>
> Thanks and 73,
>
> matt W6NIA
>
>
> On 5/4/2017 9:12 AM, Alan. G4GNX wrote:
>> FWIW we thought that a relay was failing on our club's KAT500. I
>> bought a new one from Elecraft and replaced it without thinking about
>> it. They're quite cheap and it wasn't worth chancing an intermittent
>> relay.
>> Whilst I was re-assembling the tuner, I discovered that the tag washer
>> connecting Ant 1 to its screw terminal had developed a dry joint,
>> which was the real cause of the intermittency. I don't know whether it
>> was a manufacturing fault or someone had been heavy handed when
>> assembling it.
>>
>> It would be worth checking soldered joints and other connections
>> before replacing a relay. You may need to use a magnifying glass as it
>> may not show up on a meter test. Another thing to try is what we used
>> to do as service technicians; use an aerosol freezer spray in small
>> areas around the suspected area and possibly a hair dryer on a warm
>> setting (not hot) and observe for changes under test.
>>
>> 73,
>>
>> Alan. G4GNX
>>
>> -----Original Message----- From: Victor Rosenthal 4X6GP
>> Sent: Thursday, May 4, 2017 3:07 PM
>> To: elecraft at mailman.qth.net
>> Subject: Re: [Elecraft] K3 with subrx - intermittent main RX problem
>> and pwr out
>>
>> Well, I had a relay fail on my KAT3 board. I don't remember which one.
>> Elecraft sent me a replacement. It wasn't hard to replace, but it
>> happens.
>>
>> 73,
>> Victor, 4X6GP
>> Rehovot, Israel
>> Formerly K2VCO
>> http://www.qsl.net/k2vco/
>>
>> On 4 May 2017 16:46, Don Wilhelm wrote:
>>> Olaf,
>>>
>>> The relays used by Elecraft are quite reliable, so I suspect that is
>>> not a reasonable source of the problem.  In more than 12 years of
>>> repairing the Elecraft legacy gear (more than 1200 repairs), I have
>>> had to replace only a small handful of relays due to failure.  I have
>>> replaced several where the builder has distorted the case with a soldering iron.
>>>
>>> I would double and triple check the SUBIN and SUBOUT connectors.  A
>>> connector failure is much more likely than a relay failure.
>>>
>>> You might contact K3support to see if they have encountered a
>>> situation like yours before.
>>>
>>> 73,
>>> Don W3FPR
>>>
>>> On 5/4/2017 3:31 AM, la3rk wrote:
>>>> I have a K3 approx 8 years old. Fully equipped with subrx, 100W PA,
>>>> antenna tuner and in/out module.
>>>>
>>>> When I connect the subrx, the main rx sometimes loses signal and at
>>>> the same time power out goes to zero.
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> --
> "A delay is better than a disaster."
> -- unknown
>
> Matt Zilmer, W6NIA
> [Shiraz]
>
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-- 
"A delay is better than a disaster."
-- unknown

Matt Zilmer, W6NIA
[Shiraz]