Elecraft K3EXREF - Manual (Page 3)

3
Introduction
The K3EXREF option locks the K3's reference oscillator frequency to an external 10 MHz source by
automatically controlling the
REF CAL function. While locked to the external source, the K3’s reference
oscillator frequency is maintained within 2 Hz. Since the K3EXREF does not phase lock the K3’s reference
oscillator, the external 10 MHz source has no impact on the K3’s phase noise performance. For best
performance we recommend your K3 be equipped with the KTCXO3-1 high stability (0.5 ppm typ.) reference
oscillator.
The option consists of one small pc board that mounts on the existing KREF3 board and a cable assembly that
brings in the external 10 MHz signal to the board from the K3’s rear panel. No soldering is required to install the
K3EXREF option.
Customer Service and Support
Technical Assistance
You can send e-mail to [email protected] and we will respond quickly - typically the same day Monday
through Friday. Telephone assistance is available from 9 A.M. to 5 P.M. Pacific time (weekdays only) at
831-763-4211. Please use e-mail rather than calling when possible since this gives us a written record of the
details of your problem and allows us to handle a larger number of requests each day
.
Repair / Alignment Service (We want to make sure everyone succeeds!)
If necessary, you may return your Elecraft product to us for repair or alignment. (Note: We offer unlimited email
and phone support to get your kit running, so please try that route first as we can usually help you find the
problem quickly.)
IMPORTANT: You must contact Elecraft before mailing your product to obtain authorization for the
return, what address to ship it to and current information on repair fees and turnaround times. (Frequently we
can determine the cause of your problem and save you the trouble of shipping it back to us.) Our repair location
is different from our factory location in Aptos. We will give you the address to ship your kit to at the time of
repair authorization. Packages shipped to Aptos without authorization will incur an additional shipping charge
for reshipment from Aptos to our repair depot
.
Elecraft's 1-Year Limited Warranty
This warranty is effective as of the date of first consumer purchase (or if shipped from factory, date product is shipped to customer).
It covers both our kits and fully assembled products. For kits, before requesting warranty service, you should fully complete the
assembly, carefully following all instructions in the manual.
Who is covered: This warranty covers the original owner of the Elecraft product as disclosed to Elecraft at the time of order. Elecraft
products transferred by the purchaser to a third party, either by sale, gift or other method, who is not disclosed to Elecraft at the time
of original order, are not covered by this warranty. If the Elecraft product is being bought indirectly for a third party, the third party's
name and address must be provided to Elecraft at time of order to insure warranty coverage.
What is covered: During the first year after date of purchase, Elecraft will replace defective or missing parts free of charge (post-
paid). We will also correct any malfunction to kits or assembled units caused by defective parts and materials. Purchaser pays
inbound shipping to Elecraft for warranty repair, Elecraft will pay shipping to return the repaired equipment to you by UPS ground
service or equivalent to the continental USA and Canada. Alaska, Hawaii and outside U.S. and Canada actual return shipping cost
paid by owner.
What is not covered: This warranty does not cover correction of kit assembly errors. It also does not cover misalignment; repair of
damage caused by misuse, negligence, or builder modifications; or any performance malfunctions involving non-Elecraft accessory
equipment. The use of acid-core solder, water-soluble flux solder, or any corrosive or conductive flux or solvent will void this
warranty in its entirety. Also not covered is reimbursement for loss of use, inconvenience, customer assembly or alignment time, or
cost of unauthorized service.
Limitation of incidental or consequential damages: This warranty does not extend to non-Elecraft equipment or components used
in conjunction with our products. Any such repair or replacement is the responsibility of the customer. Elecraft will not be liable for
any special, indirect, incidental or consequential damages, including but not limited to any loss of business or profits
.