[Elecraft] K1 power output

[Don Wilhelm]

John,

Even a "software guy" may be able to read a schematic - at least to the 
extent that it shows 'which is connected to what'.
Do check the schematic and you should see that the only thing between 
RFC5 and the collector of Q6 is T3.  Check that toroid carefully for 
poorly tinned and soldered leads.  If you can see any enamel on the 
solder side of the board, that is a sure sign that the lead was not well 
stripped and tinned.  Removal and re-tinning is the only cure.

73,
Don W3FPR

John Griswold wrote:
> I'm in the midst of completing my K1. Following the DC Voltage Table I 
> find that (with a 12.75 battery supply) RF-U9 has p2=6.2v, p3=6.2v, 
> p6=6.2v, p7=12.4v. These seem in line with the lower supply. RF-Q6 has 
> B=0.8v, C=0.1v, E=0.1v and RF-Q7 has B=0.0, C=12.45, E=0.0.
>
> The tables show Q6 collector should be up in the 12v range given my 
> lower input voltage. Voltage on either lead of RFC5 is ~12v, as is the 
> high end of R33.
>
> I'm not quite sure what I should read from this - I'm just a software 
> guy. Could someone provide a bit of guidance?
>
> Thanks & 73,
> John
>
>   
>