Question on KRX3 Installation

[Grant Youngman]

In errata C-7 dated March 15, 2009, page 1, there are instructions to  
cut two traces in the area to the right of D40 on the RF board.

The instructions indicate that these cuts should read open circuit.  I  
read about 14M ohms on both -- and I have cut them cleanly.

Is this right?  Am I missing something?

Thanks ... Grant/NQ5T
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[w7aqk]

Grant,

I think that "equates" to an open circuit.  By the way, congrats on having a
meter that reads that high!

Dave W7AQK


----- Original Message -----
From: "Grant Youngman" <[hidden email]>
To: "Elecraft Reflector" <[hidden email]>
Sent: Thursday, July 16, 2009 7:33 PM
Subject: [Elecraft] Question on KRX3 Installation

> In errata C-7 dated March 15, 2009, page 1, there are instructions to
> cut two traces in the area to the right of D40 on the RF board.
>
> The instructions indicate that these cuts should read open circuit.  I
> read about 14M ohms on both -- and I have cut them cleanly.
>
> Is this right?  Am I missing something?
>
> Thanks ... Grant/NQ5T
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html 

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[Grant Youngman]

That may be the case.  But the instructions are very specific about  
"open circuit as if the test meter leads were not connected to  
anything".  Even 14 megohms doesn't meet that definition.

Thought I'd better ask.

Grant/NQ5T


On Jul 16, 2009, at 9:52 PM, David Y. wrote:

> Grant,
>
> I think that "equates" to an open circuit.  By the way, congrats on  
> having a meter that reads that high!
>
> Dave W7AQK
>
>
> ----- Original Message ----- From: "Grant Youngman" <[hidden email]>
> To: "Elecraft Reflector" <[hidden email]>
> Sent: Thursday, July 16, 2009 7:33 PM
> Subject: [Elecraft] Question on KRX3 Installation
>
>
>> In errata C-7 dated March 15, 2009, page 1, there are instructions to
>> cut two traces in the area to the right of D40 on the RF board.
>>
>> The instructions indicate that these cuts should read open  
>> circuit.  I
>> read about 14M ohms on both -- and I have cut them cleanly.
>>
>> Is this right?  Am I missing something?
>>
>> Thanks ... Grant/NQ5T
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>

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[PaulF]

> In errata C-7 dated March 15, 2009, page 1, there are instructions to  
> cut two traces in the area to the right of D40 on the RF board.

Shouldn't the above change be a mod mentioned on the "K3 Enhancements and
Application Notes" info maintained on the Elecraft Website?

I installed the KRX3 before the errata was issued. I used the mods page to
update my K3, but missed the change because it is not on the mods page.

Paul
K5ESW


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[Grant Youngman]

Good question.  The only place I've seen this was in the errata  
mentioned.

The note in the errata indicates that cutting the traces  " ...  
ensures that the digital-to-analog converters  ... always receive the  
proper signal levels"

Grant/NQ5T


On Jul 17, 2009, at 8:57 AM, Paul Ferguson wrote:

>> In errata C-7 dated March 15, 2009, page 1, there are instructions to
>> cut two traces in the area to the right of D40 on the RF board.
>
> Shouldn't the above change be a mod mentioned on the "K3  
> Enhancements and
> Application Notes" info maintained on the Elecraft Website?
>
> I installed the KRX3 before the errata was issued. I used the mods  
> page to
> update my K3, but missed the change because it is not on the mods  
> page.
>
> Paul
> K5ESW
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

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