ELECRAFT K3EXREF Bedienungshandbuch

ELECRAFT K3 HIGH-PERFORMANCE 160 – 6 METER TRANSCEIVER KSYN3A SYNTHESIZER INSTALLATION INSTRUCTIONS Rev A, January 28, 2015 Copyright © 2015

10Replacing the Synthesizer(s) CAUTION: The synthesizer mounting screws use two lock washers, one between the pc board and the front panel shield

11 Figure 8. K3EXREF Board Option. Remove the replacement KSYN3A synthesizers from their envelopes. You will have two synthesizers only if your K3

12Install the main KSYN3A board as shown in Figure 10. Use the interior tooth lock washers you removed earlier with the new screws that came with t

13If your K3 has the KRX3 sub receiver, install the auxiliary synthesizer as follows: 1. First attach two coaxial cables to the pc board before in

14Complete installing the coaxial cables connected as shown in Figure 12, depending upon the options you have in your K3. Note that: 1. The cable

15Reassembling the K3 If you have the K144XV 2-meter option installed: 1. Reconnect any coaxial cables you removed (see Figure 13), but do not co

16If you have the K144XV 2-meter module installed, connect the coaxial cable from the main KSYN3A synthesizer board to REF IN as shown in Figure 14

17If you have the K144XV option installed, hold the top cover above the K3, route the speaker wire under the stiffener bar at the depression in the

2Contents Introduction ...

3Introduction This manual will guide you through the replacement of the KSYN3 synthesizer(s) in your K3 transceiver with the new KSYN3A synthesizer

4 The new KSYN3A boards are shipped in ESD-safe envelopes. Do not handle them without first taking the ESD precautions listed on page 6. Keep the s

5IMPORTANT: You must contact Elecraft before mailing your product to obtain authorization for the return, what address to ship it to and current in

6Preventing Electrostatic Discharge Damage Sensitive components may be damaged by Electrostatic Discharge (ESD) simply by touching them or a circui

7 Preparing for Installation Tools Required 1. ESD Protection (see Preventing Electrostatic Discharge Damage, pg 6) 2. #1 size Phillips screwdriv

8Installation Procedure Removing the Top Cover Disconnect power and all cables from your K3. Remove the nine screws to free the top cover as shown

9Remove the stiffener as shown in Figure 4. It will be held in place by a flat head screw through each side panel. If the KPA3 100 watt amplifier o