[Elecraft] [K3] K3 Receiver Noise Level -- Evaluation and Adjustment

[Julian, G4ILO]

P.B. Christensen wrote:
> 
> It appears your K3 has not yet been modified although don't expect a 
> complete elimination of distortion products through the K3's transformers. 
> The problem is not lmited to the K3: distortion produced in small, datacom 
> transformers is dependent on the source impedance preceding the input to
> the 
> transformer.
> 
Yes, I have performed that modification. Perhaps elimination of the
transformers would be the answer.

However what this would also suggest is that the harmonic distortion
products are only present on the line output, and not when someone is
listening to CW on speakers or headphones. I will have to try connecting the
rear speaker or headphone output to the sound card to see if the harmonics
can still be observed.

-----
Julian, G4ILO. K2 #392  K3 #222.
* G4ILO's Shack - http://www.g4ilo.com
* KComm - http://www.g4ilo.com/kcomm.html
* KTune - http://www.g4ilo.com/ktune.html

-- 
View this message in context: http://n2.nabble.com/K3-Receiver-Noise-Level-Evaluation-and-Adjustment-tp4187070p4195347.html
Sent from the [K3] mailing list archive at Nabble.com.