[Elecraft] Fwd: Lost Sidetone and Spotting Tone

Mon Mar 8 09:48:00 2004

Dave:  sounds like you've got something wrong in the audio portion of=20
the KPA100 board.  All it does is bring sound from the audio jack in=20
the K2 to the speaker in the KPA100, so there is very, very little=20
circuitry involved. Check it out.  Is the plug wired properly, does it=20=

connect to the jack in the K2 properly, are the speaker wires shorted,=20=

connected properly, etc.?

best wishes,

dave belsley, w1euy

On Mar 8, 2004, at 7:45 AM, D.R. Weiss KI=D8RP wrote:

> Correction: I do have sidetone with the basic K2, just not with the=20
> KPA100.
>
>> Date: Sun, 07 Mar 2004 19:31:35 -0700
>> To: [email protected]
>> From: "D.R. Weiss KI=D8RP" <[email protected]>
>> Subject: Lost Sidetone and Spotting Tone
>>
>> I just completed and installed the KPA100 in my K2.  I did not yet do=20=

>> the Control board modifications for computer control.  Everything=20
>> checks out OK except I have no sidetone or spotting tone, either with=20=

>> the KPA100 or with the basic K2.  (I had them in the basic K2 before=20=

>> starting this project.)  I tried changing the sidetone source, via=20
>> the menu, back and forth between U6 pin 25 and U8 pin 4, without=20
>> success.
>>
>> The only changes I made to the basic K2, as part of building the=20
>> KPA100, were--
>> *remove pin 4 of P4 on the K2 Control board (p. 21 of the KPA100=20
>> instructions)
>> *upgrade main processor firmware to ver. 2.03D (furnished with the=20
>> KPA100)
>> *upgrade I/O firmware to ver. 1.07 (furnished with the KPA100)
>> *install Aux RF (P6) and Aux 12V (P3) connectors on the RF board (p.=20=

>> 42 of instructions)
>>
>> My questions: Are the Control board modifications REQUIRED in order=20=

>> to have sidetone, or does anyone know of any other likely sources of=20=

>> this problem?
>>
>> Thanks,
>> Dave Weiss KI0RP
>> K2 #2249
>
>
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