"There is no direct relationship between the crystals and the caps for the
2.4 and 2.6 kHz bandwidth filters."
I thought they came at the same time? So its possible to have the "-s"
crystals in a 2.1 khz setup?
Rich
----- Original Message -----
From: "Don Wilhelm" <[EMAIL PROTECTED]>
To: "Rich McCabe" <[EMAIL PROTECTED]>; <[email protected]>
Sent: Thursday, March 09, 2006 9:23 PM
Subject: RE: [Elecraft] K2 SSB
Rich,
There is no direct relationship between the crystals and the caps for the
2.4 and 2.6 kHz bandwidth filters.
Sorry to hear about the attenuation - check the soldering and re-check the
soldering of T1, T2, RFC1 and RFC2.
73,
Don W3FPR
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Rich McCabe
Sent: Thursday, March 09, 2006 10:11 PM
To: [email protected]
Subject: Re: [Elecraft] K2 SSB
Well I dont know :)
The manual they sent says revision D and January 2004.
This manual shows installing CB and CN and the last one on their
site says
leave it out. It also calls CG/CH a 47 pf capacitor. According to the new
update sheet, only the original 2.1 SSB used a 47 pf cap in CG/CH.
So I am confused. This would mean I have -s crystals and old caps !
I installed the parts and I obviouslly have something wrong. The
OP1 filter
is severally attenuationed. It works, but is several DB down from what it
should me.
Thanks for the response guys. Back to checking things over.
73,
Rich
----- Original Message -----
From: "Don Wilhelm" <[EMAIL PROTECTED]>
To: "Rich McCabe" <[EMAIL PROTECTED]>; <[email protected]>
Sent: Thursday, March 09, 2006 6:52 PM
Subject: RE: [Elecraft] K2 SSB
> Rich,
>
> All I can say is that if you have CB and CN populated, either
you have the
> 2.1 kHz filter or that you made some mistake in pluging the capacitors
> (the
> latter not likely since you indicate the capacitors called for in your
> manual). I can confirm that the 49136-S crystals are the new type.
>
> In any case, all you need to do is change the capacitors to
those required
> for the new bandwidth and you should be 'good to go'. I have
not compared
> the manuals in detail, but as far as I have observed in several KSB2
> builds,
> the only recent change to the KSB2 manual has been the filter
width change
> information and the prior errata information has been incorporated into
> the
> new manual. Other than the firmware changes to support the
K60XV option
> and
> the addition of the bandwidth information, the KSB2 has been
quite stable
> for some time. Whe you finish, you should have no caps in the CB and
> CN
> positions.
>
> 73,
> Don W3FPR
>
>> -----Original Message-----
>>
>> On a whim, I decided to order the SSB upgrade capacitor kit for
>> my K2 Serial
>> #4331 as I never have been happy with the SSB audio.
>>
>> While trying to decipher the tech sheet (installation
>> instructions) I notice
>> that it shows no caps in place for CB and CN. It was my
>> understanding that
>> Serial 4331 should have a 2.4 filter setup. My crystals are
>> marked with the
>> "4.9136-S", so I am assuming its a late kit.
>>
>> I just pulled out MY manual and it shows installing CB and CN and
>> does not
>> look like the manual on the Elecraft site that says to leave
them out. I
>> have no erata sheet with my K2 stuff.
>>
>> So I am wondering if Elecraft just shipped me an old manual??
>>
>> Anything else I should look for that has changed between manual
>> revisions?
>>
>> 73,
>>
>> Rich
>> kd0zv
>>
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>>
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>>
>>
>
>
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