[Elecraft] Elecraft K2 Temperature-Compensated PLL Reference Upgrade

Fri Apr 25 19:58:00 2003

Eric, I assume the kits will be available at Dayton? Tnx!

ed - k6sdw

>From: Eric Swartz WA6HHQ - Elecraft <[email protected]>
>To: Elecraft List <[email protected]>,K6BJ list <[email protected]>
>Subject: [Elecraft] Elecraft K2 Temperature-Compensated PLL Reference 
>Upgrade
>Date: Fri, 25 Apr 2003 15:51:27 -0700
>
>We've just completed field testing of an easy-to-install upgrade to the 
>K2's PLL synthesizer stage. The upgrade uses a thermistor and a few other 
>components to temperature-compensate the varactor-tuned crystal reference 
>oscillator. The compensation circuit reduces the reference oscillator's 
>temperature coefficient by as much as a factor of 10. This will be of 
>particular interest to those who use the K2 with the KPA100 option, or who 
>frequently operate outdoors or mobile.
>
>All of the components are mounted on a small circuit board which replaces 
>one of the existing resistor networks. This results in a clean, no-wires 
>installation. The changes do not increase current drain.
>
>The PLL upgrade will be included free of charge with all new K2 kits 
>starting
>today (s/n 3446 and up). Existing K2 owners can purchase the upgrade kit 
>for
>only $19 (order number E850138). The upgrade kits are now in stock.
>
>You can get more information at:
>http://www.elecraft.com/order_form_parts.htm#K2%20Parts
>
>
>We'd like to thank John Grebenkemper, KI6WX, who designed the 
>temperature-compensation circuit, as well as all of those who field-tested 
>the
>upgrade kit.
>
>73,
>Wayne, N6KR
>Eric, WA6HHQ
>
>
>
>http://www.elecraft.com/order_form_parts.htm#K2%20Parts
>
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