k2 T7 query

[VicWinton]

Hi Folks,

 

I am now confused..my K2 serial no 1926 from 2001 has T7 having 20turns / 5
turns.

 

I just checked the latest manual and the turns are the same. Are we sure
it's T7 we are talking about ?

 

73,   Vic GW4JUN

 

 

>>>>>

That is a very old mod (2003) and was one of the experimental things

done at that time.

Since then, the T7 winding ratio has been changed and the specs on the

IF filter crystals have been modified.

Currently I do not believe there is any benefit in applying that mod to

a K2.  If you have a very old K2, simply change the T7 winding to the

ratio given in the current K2 manual.

 


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[Don Wilhelm-4]

Vic,

Yes, it is that T7, and you have the current winding ratio.  Some of the
earlier K2s used a 13 to 4 turns ratio - I am not certain when the
cut-over was made, but I believe it was in the low 1000 SN range.
Many of these early K2s have already been changed - I have done several
myself while doing repairs or upgrades.

73,
Don W3FPR

VicWinton wrote:

> Hi Folks,
>
>  
>
> I am now confused..my K2 serial no 1926 from 2001 has T7 having 20turns / 5
> turns.
>
>  
>
> I just checked the latest manual and the turns are the same. Are we sure
> it's T7 we are talking about ?
>
>  
>
> 73,   Vic GW4JUN
>
>  
>
>  
>
>  
>
> That is a very old mod (2003) and was one of the experimental things
>
> done at that time.
>
> Since then, the T7 winding ratio has been changed and the specs on the
>
> IF filter crystals have been modified.
>
> Currently I do not believe there is any benefit in applying that mod to
>
> a K2.  If you have a very old K2, simply change the T7 winding to the
>
> ratio given in the current K2 manual.
>
>  
>
>
>   _____  
>
> I am using the Free version of SPAMfighter <http://www.spamfighter.com/len>
> .
> We are a community of 7 million users fighting spam.
> SPAMfighter has removed 343 of my spam emails to date.
> The Professional version does not have this message.
>
> ______________________________________________________________
> 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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Post: mailto:[hidden email]

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