[Elecraft] Help with K2 PLL Reference Oscillator Problem

[Henry Gardiner]

I replaced my original K2's 12 uH L31 with 6 uH, hand-wound and 
measured.  This produced a VCO range slightly less than permitted but much, 
much less frequency drift during operation and under the hair dryer at 1.5 
feet.  The VCO range had been 18 Khz.  Thanks to everyone for highlighting 
this.
Henry AC5LA


At 09:22 PM 3/12/04, you wrote:
>Kenny;
>This is a problem with the 12MHz crystals that Elecraft is receiving from
>ECS.  The Lm of these crystals is lower than the original design called for.
>To fix the problem, Elecraft will send you a 10uH L31 which will reduce your
>range to the desired 10-15 kHz.  To order this part, contact
>support@elecraft.com and explain the problem.
>
>You can continued building the K2 even with this problem.  The only
>disadvantage of the large swing is that it increases the temperature drift
>of the K2.  When you get the smaller value L31, just cut out the old one and
>install the new one.
>-John
>  KI6WX