Paul;
I designed the temperature stability part of the PLL reference oscillator. The PLL reference tuning range needs to be a minimum of 9.8 kHz if you want to operate on 160 meters. A tuning range of 8.8 kHz will not work at 1.8 MHz. If you only want to operate down to 3.5 MHz, a PLL reference tuning range of 8.8 kHz is fine.

The 8.8 kHz that appeared on the Elecraft web site was a typo - it has now been corrected to 9.8 kHz minimum. ECS has not been able to control the Q of the 12 MHz crystals as tightly as we would like. When they deliver higher Q crystals, the tuning range becomes narrower and the larger 12uH inductor is required to compensate for the higher Q crystals.
-John
KI6WX

----- Original Message ----- From: "Paul Bruneau" <[EMAIL PROTECTED]>
9.8 may be fine, but I have 9.26 (see below)  :)

I will check out the "What's New" section as Dave G3VGR suggested, and if that doesn't make sense to me I'll contact Elecraft as Dave Lowenstein suggested.

Thanks all, and any additional comments definitely welcome!

-Paul

On Apr 21, 2005, at 7:08 PM, Tim Cailloux wrote:

9.8 is fine.  Wayne has mentioned in the past that 8.8 is the "real"
minimum.  I just finished #4539 and I was at 9.8 also.

...... Original Message .......
On Thu, 21 Apr 2005 18:55:06 -0400 "Paul Bruneau" <[EMAIL PROTECTED]>
wrote:
My High freq: 12099.03
My Low Freq: 12089.77
My range: 9.26



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