[Elecraft] K2 SSB option problem

[Don Wilhelm]

Gordon,

I don't know how you would use any soundcard data to check that, but if 
you have an instrument that can extract crystal parameters, that will 
work.  It is easier to just assume your crystal set is somewhere close 
to the midpoint, and that is 3.6.

When you get it all together, you can use Spectrogram (or another audio 
spectrum analyzer) to optimize where the filter passband is placed.
You can download a copy of Spectrogram from my website www.w3fpr.com - 
scroll near the bottom of the opening page to find the links.
There is some information on my K2 Dial Calibration article about using 
Spectrogram.
For more detail along with pictures, look at the Tom Hammond (SK) N0SS 
website at http://www.mmccs.com/mmarc/n0ss/index_k2.html (do not use the 
Spectrogram download link you will see there - use the link to the local 
files on my website).

73,
Don W3FPR

On 3/21/2018 7:13 PM, Gordon LaPoint wrote:
> Don,
>    Thanks!   There is no number inked on the envelope.   Is there a 
> way using soundcard data to check?
> Gordon -  N1MGO
>
> On 3/21/2018 7:04 PM, Don Wilhelm wrote:
>> Gordon,
>>
>> If there is no number inked in somewhere on that envelope, someone 
>> dropped the ball when sorting the crystals.
>> In the absence of a calibration number, assume it is 3.6 - that is 
>> the most common.
>>
>> 73,
>> Don W3FPR
>>
>> On 3/21/2018 6:37 PM, Gordon LaPoint wrote:
>>> I'm building a K2, and so far its working.  I'm now assembling the 
>>> KSB2 ssb adapter.  In the step where I'm to put in the Filter 
>>> Crystal set I'm supposed to find a calibration number on the 
>>> envelope.   the Part number is E850006, the only other numbers on 
>>> the envelope are:
>
>
>