Elecraft K144XV User Manual



ELECRAFT

HIGH-PERFORMANCE 160 – 6 METER

T

RANSCEIVER

K144XV REFERENCE OSCILLATOR

K3

PHASE

Revision A1, April 13, 2011

Copyright © 2011, Elecraft, Inc.

LOCK OPTION

NSTALLATION

I

All Rights Reserved

Contents

Introduction ............................................................................................................................................. 3

Customer Service and Support ............................................................................................................................ 3

Installing the K144XV Phase Lock Board ............................................................................................ 4

Anti Static Protection Required ........................................................................................................................... 4

Preparing for Installation ..................................................................................................................................... 4

Tools Required ................................................................................................................................................ 4

Firmware Required .......................................................................................................................................... 4

Parts Included .................................................................................................................................................. 5

Installation Procedure .......................................................................................................................................... 6

Removing the K3Top Cover and Chassis Stiffener ........................................................................................ 6

Installing the Phase Lock Board ...................................................................................................................... 7

Installing the Firmware and Testing the Board ............................................................................................... 9

Replacing the Top Cover .............................................................................................................................. 10

Recalibrating the XV144 ...................................................................................................................... 11

2

Introduction

This option phase locks the local oscillators in the K144XV to the KREF3 master reference oscillator in the K3.
The circuitry is contained on the K144XV Phase Lock Board that mounts onto the K144XV pc board inside the
K144XV 2-Meter module enclosure. No soldering is required to install this option.

Customer Service and Support

Technical Assistance

You can send e-mail to [e-mail] 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, befor e 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, includ ing but not limited to any
loss of business or profits.

3

Installing the K144XV Phase Lock Board

Anti Static Protection Required

We strongly recommend you take the following anti-static precautions (listed in order of importance) to avoid
ESD (Electro Static Discharge) damage:

 Leave ESD-sensitive parts in their anti-static packaging until you install them. The packaging may be a

special plastic bag or the component’s leads may be inserted in conductive foam. Parts which are
especially ESD-sensitive are identified in the parts list and in the assembly procedures.

 Wear a conductive wrist strap with a series 1-megohm resistor. If you do not have a wrist strap, touch a

bare metal ground briefly before touching any sensitive parts to discharge your body. Do this frequently
while you are working. You can collect a destructive static charge on your body just sitting at the work
bench.

WARNING

DO NOT attach a ground directly to yourself without a current-limiting
resistor as this poses a serious shock hazard. A wrist strap must include a 1­megohm resistor to limit the current flow. If you choose to touch an
unpainted, metal ground to discharge yourself, do it only when you are not
touching any live circuits with your other hand or any part of your body.

 Use a grounded anti-static mat on your work bench.
 No soldering is required but if you choose to use a soldering iron for any reason, be sure your iron has

an ESD-safe grounded tip tied to the same common ground used by your mat or wrist strap.

Preparing for Installation

Tools Required

1. #0 and #1 size Phillips screwdrivers. To avoid damaging screws and nuts, a power screwdriver is not

recommended. Use the screwdriver that best fits the screw in each step.

2. Soft cloth or clean, soft static dissipating pad to lay cabinet panels on to avoid scratching.

The following tools are strongly recommended:

1. ESD wrist strap.

2. Static dissipating work pad.

3. Long (needle) nose pliers or sturdy tweezers (for handling small cables in tight spaces)

Firmware Required

You must have Firmware version 1.03 or later available for loading into the K144XV, the special RS232 cable
used with the K144XV for updating firmware, and your computer available. The Phase Lock Board will not
function without the new firmware.

4