ELECRAFT K3s Kit Assembly And Instruction Manual
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ELECRAFT K3s Kit Assembly And Instruction Manual

160-6 meter transceiver
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Download this manual See also: Owner's Manual, Instruction and Installation Manual
E
K3
S
LECRAFT
H
-P
IGH
ERFORMANCE
160 – 6 M
T
ETER
RANSCEIVER
K
A
M
IT
SSEMBLY
ANUAL
Revision A, May 27, 2015
Copyright © 2015, Elecraft, Inc.
All Rights Reserved

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Summary of Contents for ELECRAFT K3s

  • Page 1  LECRAFT ERFORMANCE 160 – 6 M ETER RANSCEIVER SSEMBLY ANUAL Revision A, May 27, 2015 Copyright © 2015, Elecraft, Inc. All Rights Reserved...

  • Page 2: Table Of Contents

    Mounting the Front Panel Assembly ....47  S-Meter Calibration (Optional) ........ 75  Resistance Checks ..........51  Appendix A, Illustrated Parts ist....... A1 Initial Power On Check ........52  KREF3 Reference Oscillator ........52  Elecraft manuals with color images may be downloaded from www.elecraft.com.

  • Page 3: Key To Symbols And Text Styles

    Key to Symbols and Text Styles Identifies important information. Characters displayed on the LCD screen - 100 Tap switch function (labeled above a switch) D I S P Hold switch function (labeled below a switch; hold for 1/2 sec. to activate) AV E R AG E Typical menu entry MENU:Font...

  • Page 4: Introduction

    PC boards and a multi-element modular chassis. But the unique design of the K3s eliminates some of the tedious aspects of construction, enabling you to complete assembly in far less time than previous high-performance transceiver kits. Also, virtually all of the alignment is handled in firmware using test capabilities built into the K3s.
  • Page 5 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.

  • Page 6: Preventing Electrostatic Discharge Damage

    There is no climate or work location where the components of your K3s are safe from Electrostatic Discharge (ESD) unless you take specific steps to prevent such damage. Many of the components in your K3s can be damaged by static discharges of only a few volts: far too little for you to notice. It is those low-voltage but destructive discharges that easily happen anywhere and under virtually any environmental conditions.

  • Page 7: Preparing For Assembly

     If you choose to use a soldering iron to work on your K3s for any reason, be sure the iron is ESD-safe with a grounded tip tied to the same common ground used by your mat or wrist strap.
  • Page 8 Figure 1. Typical Assembled K3s/10 (Less Top Cover and Chassis Stiffener Bar).

  • Page 9: Tools And Test Equipment Required

    9. Power supply 13.8 VDC nominal (11-15 V) with a cable and Anderson PowerPole connector. A power cable kit is provided with your K3s if you do not have a suitable cable with the required Anderson PowerPole connector. The power supply must be capable of providing at least 3 Amperes for a K3s/10 and 20 Amperes for a K3s/100.

  • Page 10: Unpacking And Inventory

    A number of different types and sizes of screws and washers are used in the assembly. It is very important that you use the screw specified in each location or your finished K3s may not fit together properly. In some places, using the wrong size screw may damage components.

  • Page 11: Standoffs

    Lock Washers Two types of lock washers are used in the K3s (see Figure 4). It is important that you use only the type specified and put the washers exactly where indicated. Failing to use the correct type may result in short circuits to nearby circuit traces.

  • Page 12: Assembly

    Assembly IMPORTANT ASSEMBLY INFORMATION 1. Screws and other Fasteners: A variety of screws and fasteners are used to assemble your K3s:  Stainless Steel Hardware: Exterior screws are stainless steel to avoid corrosion in harsh environments. The stainless steel screws and washers are packaged in a separate bag marked E850714 SS Hardware Kit.

  • Page 13: Rf Board And Chassis

    RF Board Description The RF PCB (Printed Circuit Board) is the heart of the K3s transceiver, both physically and electrically. During assembly, it serves as an attachment point for other PCBs as well as chassis panels, acting as the glue that holds things together.
  • Page 14 Install the two KBPF3A standoffs shown in Figure 8. Even if you didn’t purchase the KBPF3A general coverage option, the standoffs and hardware are included in the K3s kit to make installing the option easier at some future date. Note that these standoffs have only one lock washer between each standoff and the RF board Note that one standoff is very close to the toroid coils.
  • Page 15 Figure 9. Installing Q3 Hardware. Locate the crystal I.F. filter(s) that you purchased with the K3s. At least one I.F. filter must be installed for the K3s to operate. Two types of filters are available: standard 5-pole filters and optional 8-pole filters (see Figure 10).
  • Page 16 Use pencil in case you change your filters later. This will keep the filter information with your K3s. The label also has a row for Gain. This is a value you can determine later after your K3s is assembled and aligned.
  • Page 17 Figure 11. RF Board Partially Assembled.
  • Page 18 Check all three KLPA3A connectors shown in Figure 12 to ensure they are fully mated as shown. If they are not fully mated, the transistors will not rest against the K3s bottom cover as required when it is fitted later.
  • Page 19 Figure 13. Installing Front Panel Shield. Mount the K3s mixer board on the RF board as shown in Figure 14. The mixer plugs into Z1 on the RF board. Figure 14. Installing Mixer Board.
  • Page 20 Figure 16. The right side panel has six additional holes; four for mounting the side feet and two for attaching other parts inside the K3s (see Figure 21). Set the right side panel aside for now.

  • Page 21: Kant3A Or Kat3A Right Side And Rear Panels

    KANT3A or KAT3A Description The basic K3s/10 includes a KANT3A antenna input module. If you’ve ordered a KAT3A antenna tuner, the KANT3A is not required and will not be supplied with the kit. In either case, the module plugs into the RF board at the back-right corner.

  • Page 22: Installing Krx3 Aux Rf (Ant) Connector

    If you are installing the KAT3A, install the second SO239 connector in the ANT2 position on the rear panel using two 4-40 1/4” (6.4 mm) black pan head screws (SS), two 4-40 internal tooth lock washers and two 4-40 nuts just as you did for the ANT1 connector. Set the rear panel aside for now. Installing KRX3 AUX RF (ANT) Connector If you do not have the KRX3 sub receiver option kit on hand, skip this section and go directly to Preparing Right Side Panel for Installation below to continue assembly.
  • Page 23 Later you will apply power to do preliminary testing and calibration before the KRX3A sub receiver is installed. Failure to insulate the TMP connector as described above may result in short circuits and extensive damage to your K3s if it touches a component, solder pad or other exposed circuit points.

  • Page 24: Preparing Right Side Panel For Installation

    Figure 21. Installing Side Panel Feet. Position the right side panel against the K3s to verify how it will fit against the RF board. When it is oriented correctly, the three holes along the bottom edge will line up with the holes in the 2D fasteners on the RF board and two holes in the side panel will be aligned with the tabs on voltage regulators U12 and U13.

  • Page 25: Mounting The Kant3A Or Kat3A, Side And Rear Panels

    At the upper rear corner of the side panel you just identified in the previous step, mount a 2D fastener as shown in Figure 22, using a black 4-40 1/2” (13 mm) flat head screw (SS). Remember that flat head screws are measured from the flat top to the end of the threads.
  • Page 26 Attach the bottom lip of the rear panel to the 2D fasteners at the rear corners of the RF board with 4-40, 3/16” (4.8 mm) black pan head screws (SS). (Note that all the screws used on the bottom of the K3s are black...
  • Page 27 Connect the wires from the SO239 connector(s) to the KANT3A or KAT3A board as shown in Figure 28. Use needle-nose pliers to grip the terminals on the wire ends and carefully insert the connectors straight into the holes in the board. They may be very difficult to insert unless they are perfectly aligned. While inserting the plugs, support the board with your fingers to avoid putting stress on the connector at the bottom.

  • Page 28: Kxv3B Interface

    The KXV3B Interface provides a separate receive antenna input and output, inputs and outputs for use with an external transverter, and a buffered i.f. output. Also included is a high-gain, low-noise preamplifier that provides extra sensitivity on the 12 through 6meter bands. Complete details for using the KXV3B are included in the K3s Owner’s manual.
  • Page 29 Push the connector pins into J66 only as far as needed so the holes in the KXV3B connector bushings are aligned with the holes in the K3s rear panel as shown. These connectors do not fully mate and the bushings hold the board away from the rear panel.

  • Page 30: Kio3B Interface

    Main, Audio I/O and Digital I/O. The Main KIO3B board plugs directly into the RF board, while the Audio and Digital I/O modules plug into the KIO3B main board. See Theory of Operation, KIO3B, in the K3s Owner’s Manual for more information.
  • Page 31 Figure 35. Preparing the KIO3B Board for Installation. Install the KIO3B Main board with the Audio I/O daughter board attached into the K3s as shown in Figure 36. The KIO3B main board plugs into J76 on the RF board. The KXV3B coaxial TMP cable fits between the KXV3B and KIO3B boards.

  • Page 32: Front Panel And Dsp

    Front Panel and DSP Front Panel and DSP Description The Front Panel is a large plug-in module that provides the K3s user interface (LCD, switches, shaft encoders, potentiometers, and LEDs) as well as the microcontroller (MCU) and parameter storage (EEPROM and FLASH).
  • Page 33 Mount three standoffs on the back of the front panel board as shown in Figure 39. Place the lock washer between the screw head and the board as shown. Figure 39. Preparing the Front Panel Board for Mounting, Part 1. On the front side of the board, mount four standoffs as shown in Figure 40.
  • Page 34 Inspect the front panel board to verify the following: Three 4-40 5/8” (15.9 mm) standoffs are mounted on the back as shown in Figure 39. Two 4-40 5/16” (7.9 mm) standoffs are mounted on the front as shown in Figure 40. Two 2-56 5/16”...
  • Page 35 Locate a 2-56 5/32” (4.0 mm) fillister head screw found in the small envelope marked E700311 Bezel Screws. Thread the screw through each of the four threaded holes at the corners of the opening in the front panel for the LCD to ensure they are clear of paint (see Figure 43). Lubricate the screw if the fit is tight. A drop of water on the threads will usually work well and it is easier to wipe away excess water than oil.
  • Page 36 Cut only the five pins shown close to the back of the pc board so they do not extend above the solder pads. Cutting them avoids the possibility of a short circuit to an adjacent pc board when the K3s is assembled. Figure 47. VFO B Encoder Assembly Preparation for Installation.
  • Page 37 Place the VFO B encoder in the opening near the end of the front panel board so the nut rests against the inside of the front panel and the encoder pins mate with J34. The connectors may not mate fully, leaving a very small area of the pins showing.
  • Page 38 Using the wrong screw may break the LCD cover glass and ruin the display. Locate the envelope marked E850710, K3s Bezel Screws. Use only these screws to mount the bezel as shown in Figure 49, with the shorter fillister head screws used at the four corners of the display. Take care not to dislodge the lens while mounting the bezel.
  • Page 39 Place the larger of a pair of concentric knobs over the RF/SQL - SUB control as follows (See Figure 51): CAUTION! Do not over-tighten the set screws in the knobs in the following steps or you may crack the knobs! Use only enough torque to hold the knobs in place. Turn both shafts fully clockwise Place the larger knob over the shafts.
  • Page 40 CAUTION! You may damage the encoders while installing the knobs in the next step unless you align the flats in the knobs with the flats on the shafts as described below. Press small knobs on the four controls under the left end of the LCD: SHIFT/LOW, HI/WIDTH, SPEED/MIC and CMP/PWR.

  • Page 41: Mounting The Sub Receiver Auxiliary Dsp Board

    If you did not purchase the KRX3A, go to Installing the KDVR3 Digital Voice Recorder Option on page 44 if you purchased the KDVR3 Digital Voice Recorder Option with your K3s. If you do not have the KDVR3, go directly to Mounting the DSP Board Assembly on the Front Panel on page 45.
  • Page 42 Mount the three 7/16” (11mm) male/female standoffs on the component side of the main DSP board as shown in Figure 56 using 4-40 nuts and #4 split lock washers. Be sure that: The standoffs are on the component side of the board as shown. No lock washer is used between the standoff and the board.

  • Page 43: Installing The Kdvr3 Digital Voice Recorder Option

    Locate resistor R3 on the front panel board (mounted on the front panel). If R3 is positioned above the board on its leads as shown in Figure 58, push it over to one side of the outline as shown. Be sure you don’t push it so far its leads might touch the solder pads for other components on the board.

  • Page 44: Mounting The Dsp Board Assembly On The Front Panel

    Mounting the DSP Board Assembly on the Front Panel Locate the main DSP board and install the nylon standoff near J51 as shown below. Be sure you place it in the correct hole near the edge of the board. The standoff is also shown in Figure 59. CAUTION: To avoid damaging a circuit trace very close to the metal ring around the screw hole, position the lock washer under the screw so the split faces away from the trace.
  • Page 45 Squeeze the boards together while ensuring the pins are mating with the connectors until the DSP board is resting against the three standoffs on the back of the front panel board that you installed earlier. The two connectors will not mate completely. About 1/4” (6.4mm) of the pins may be visible when the DSP board is positioned against the standoffs.

  • Page 46: Mounting The Front Panel Assembly

    Screw the knurled nut onto the threaded shaft of the PHONES jack where it exits the front panel (see Figure 63). Screw it only finger tight. Do not use pliers. Figure 63. Phones Jack Hardware. Mounting the Front Panel Assembly Remove both side panels from the chassis as follows.
  • Page 47 ESD SENSITIVE: Wear a grounded wrist strap or touch an unpainted metal ground before handling the RF Board in the following steps. Turn the chassis upside down and position the front panel so the pins of P30 and P35 on the bottom of the RF board just begin to engage the connectors on the lower edge of the front panel assembly.
  • Page 48 REMOVING THE FRONT PANEL: If you need to remove the front panel assembly, remove the five screws holding it to the chassis (three on the top lip and two on the bottom), turn the unit upside down and use a screwdriver in the two pry slots provided as shown in Figure 67.
  • Page 49 If you are installing the K3EXREF option, refer to the K3 K3EXREF Frequency Lock Option manual and install the coaxial cable as shown in Figures 3, 4 and 5 on pages 7 and 8. Note that in your kit the K3s bottom cover and KREF3 board are not yet installed.

  • Page 50: Resistance Checks

    Resistance Checks The following resistance checks confirm that the main power busses in the K3s aren’t shorted to ground. If any of the values measured are lower than specified, inspect the unit carefully for loose hardware that is caught between components on the boards or for improperly mated connectors.

  • Page 51: Initial Power On Check

    Connect your 13.8 VDC power supply to the 12VDC IN connector on the rear panel. If you do not have a suitable cable handy, assemble the Power Supply Cable Kit supplied with your K3s. Do not connect a key, microphone or other accessories to the K3s at this time.
  • Page 52 Mount the TCXO module on the KREF3 board as shown in Figure 72. Be certain the leads go into the corner holes in the socket and the black dot is oriented toward connector J6 as shown. If you have a 1ppm high-stability module, the dot may be light brown and not as close to the corner.
  • Page 53 CAUTION In the following step it is easy to drop screws and lock washers into the K3s. If this happens, you must find and retrieve the hardware. Failing to do so may cause short circuits and damage your K3s when power is applied.

  • Page 54: Ksyn3A Synthesizer

    KSYN3A Synthesizer KSYN3A Description The KSYN3A module is a high-performance, wide-range synthesizer covering 8 to 46 MHz. It is based on a high-performance phased-lock loop IC that uses direct-digital synthesis for fine tuning. This IC has exceptionally low timing jitter, resulting in very low phase noise. The output signal is locked to the K3's 49.380- MHz reference to within a fraction of a Hz.
  • Page 55 Install the KSYN3 board on the back side of the front panel shield as shown in Figure 76. Figure 76. Installing the KSYN3 Board. Locate the three TMP cables. They are about 1/8” (3 mm) diameter coaxial cables with connectors at each end as shown in Figure 77.
  • Page 56 Install the three TMP cables between connectors on the KREF3 board, the main RF board and the KSYN3 board as follows. Handle the connectors by the finger-grip area shown in Figure 77, especially if you unplug a connector. Do not pull on the coaxial cable to unplug a connector! When mating the connectors, be sure the plugs are fully inserted as shown in Figure 77.

  • Page 57: Loudspeaker

    Loudspeaker Loudspeaker Description The built-in loudspeaker is mounted on the top cover. A grill cloth covering the sound holes keeps dust and debris from falling into the speaker cone. The loudspeaker is equipped with a magnetic shield to avoid unwanted interaction with nearby circuits.
  • Page 58 Trim and cut screw holes in the grill cloth as needed and position it over the four screws that are now held in place by the book. Trim the grill cloth so the cloth does not touch the stiffener. Place a fiber washer on each screw so it rests on the grill cloth. Position the loudspeaker on the four screws so they pass through the holes in the flanges.

  • Page 59: Kpa3A Shield

    KPA3A Shield Description The KPA3A shield is part of the optional KPA3A 100-watt amplifier module. It isolates the high-level RF circuits in the KPA3A from the rest of the K3s and provides mechanical support for the amplifier module itself. KPA3A...
  • Page 60 Attach the shield to the RF board and to the rear panel as shown in Figure 84. The screws, washers and nut are in the KPA3A Option kit. The standoffs are part of the K3s kit hardware. Figure 84. Attaching the KPA3A Shield.

  • Page 61: Bottom Cover

    Bottom Cover Bottom Cover Description The bottom cover is divided into two parts, the rear and forward sections. The rear section is slightly thicker than the forward section to act more efficiently as a heat sink for the LPA transistors. The bottom covers attach to standoffs as well as the 2D fasteners on the bottom of the RF Board.
  • Page 62 Install the tilt stand and second foot as shown in Figure 87. You many need to press the foot against the tilt stand to get the 4-40 7/16” (11mm) screws (SS) to pass through the cover and foot. Put a #4 lock washer (SS) and nut (SS) on each screw as you did before.

  • Page 63: Knb3 Noise Blanker Description

    KNB3 Noise Blanker Description The KNB3 is one of two noise blanker systems in the K3s. It is a narrow I.F. pulse blanker that plugs into the RF board. See Theory of Operation, Noise Blanker in the K3s Owner’s Manual for more information KNB3 Installation Procedure Install the standoff for the noise blanker as shown in Figure 89.

  • Page 64: Kbpf3A General Coverage Receive Option

    Plug the noise blanker board into J77 and attach it to the standoff using the hardware shown in Figure 90. Figure 90. Installing the Noise Blanker Board. KBPF3A General Coverage Receive Option If you have the KBPF3A General Coverage Receive option kit, install the board as follows. Otherwise skip this section and go directly to Power Amplifier Jumper Block on page 66.

  • Page 65: Power Amplifier Jumper Block

    Power Amplifier Jumper Block The Power Amplifier (PA) jumper block is required to operate the K3s without the optional KPA3A 100 watt power amplifier module installed. Your RF board was shipped with the jumper block installed. Even if you are planning to install the KPA3A at this time, do not remove it until instructed to do so.

  • Page 66: Battery Bt1

    BT1 is a 3-volt lithium coin cell that provides the operating voltage for the real-time-clock IC (RTC) on the front panel when the K3s is turned off. Depending on the type of cell, BT1 could last from 2 to 10 years, thanks to the extremely low current drain of the RTC –...

  • Page 67: Finishing The Enclosure

    If the KPA3A shield is installed it will be inside the shield. Check the cable carefully to ensure you have fully insulated the metal conductor at the end. Failure to do so may result is severe damage to your K3s if it comes in contact with a live circuit.
  • Page 68 Locate the two thermal insulators and clear the screw holes. They are already cut. If material is still covering the holes, push a small tool through the hole to remove the unwanted material. Remove the protective backing from each insulator and press the adhesive side against a low-power amplifier transistor with the hole in the insulator aligned with the screw hole in the transistor as shown in Figure 96.
  • Page 69 Install the rear bottom cover section as follows (see Figure 97): Position the cover so the holes near the center line up with the transistors on the LPA board. The remaining holes will line up with 2D fasteners and standoffs. Note: The bottom cover is anodized, not painted.

  • Page 70: Top Cover

    Figure 98. Connecting Speaker to KIO3B Board. Place the top cover on the K3s with the tab at the rear extending under the lip of the rear panel. Secure the top cover with six 4-40 3/16” (4.8 mm) black flat head screws (SS) along the front and rear edges of the cover.
  • Page 71 This completes the assembly of your K3s/10 Transceiver. Next perform the Initial Test and Calibration procedures below to ensure your K3s is operating properly. Once they have been completed you can proceed to install other options, including the KPA3A 100-watt amplifier module, at any time. Each option is supplied with its own installation manual.

  • Page 72: Test And Calibration

    It’s time to apply power! In the following tests and procedures you will check out and calibrate essential functions of your basic K3s. You must complete these procedures before operating your K3s at low power or before installing a KPA3A 100-watt power amplifier option.

  • Page 73: Filter Setup

    Filter Setup Turn to the Crystal Filter Installation and Setup section of your Owner’s Manual and perform the following procedures. If you have installed standard Elecraft 5-pole filter(s) you will need the FREQ OFFSET data you recorded earlier on page 16.

  • Page 74: Option Modules

    The wattmeter is reasonably accurate as it is supplied. However, if you have an accurate external wattmeter you can adjust the K3s to match its readings at low power (5 watts), high power (50 watts), and at 0.5 milliwatts output at the KXV3B transverter interface. Refer to Calibration Procedures, Wattmeter in your Owner’s Manual.

  • Page 75: Appendix A, Illustrated Parts Ist

    KPA100 KAT3 Automatic Antenna Tuner are supplied in separate boxes with their own parts lists. They are not shown here. As you assemble your K3s, you will be directed to install those options or prepare your K3s for them to be installed after initial testing and checkout at the proper points in the assembly procedure.
  • Page 76 Tie Wrap, KREF3 TCXO. Module E980145 Crystal Filter (in bag) Depending upon what filters you ordered with your K3s, you will have either 5-pole or 10-pole filters packed with your kit. At least one filter is required for the K3s to operate. ELECRAFT...
  • Page 77 Parts Included in All K3s Kits These parts are in a box with a label identifying the contents as a K3s kit and whether it is a K3s/10 (10 watt) or K3s/100 (includes the optional 100 watt KPA100 amplifier). Your kit should include all of the following parts regardless of the options you chose. Note that there are two additional boxes.
  • Page 78 ELECRAFT ILLUSTRATION DESCRIPTION PART NO. K3s Mixer PCB Assembly E850257 ESD Sensitive. KNB3 Noise Blanker PCB Assembly E850280 ESD Sensitive. KREF3 PCB Assembly E850254 ESD Sensitive. KSYN3A Assembly E850638 ESD Sensitive A- 4...
  • Page 79 ELECRAFT ILLUSTRATION DESCRIPTION PART NO. KIO3B Main PCB Assembly E850645 ESD Sensitive. KIO3B Audio I/O PCB Assembly E850647 ESD Sensitive. KIO3B Digital I/O PCB Assembly E850646 ESD Sensitive. KXV3B PCB Assembly E850644 ESD Sensitive. A- 5...
  • Page 80 E980090 Knob, RIT/XIT E980089 Knob, Concentric Shaft, Large E980092 Knob, Concentric Shaft, Small E980091 E850308 K3s Front Panel Knobs , Set of 4 (bag) ELECRAFT ILLUSTRATION DESCRIPTION PART NO. Knob, Small Encoder Shaft E980088 E850239 K3s FP Encoder Assembly Bag...
  • Page 81 ELECRAFT ILLUSTRATION DESCRIPTION PART NO. Knob, VFO A Tuning E980093 Finger Grip, Main VFO Tuning Knob E980285 E850698 K3s Front Panel Bezels and Serial Number Label (bag) ELECRAFT ILLUSTRATION DESCRIPTION PART NO. Bezel Lens (LCD cover), K3s E100575 Bezel K3s...
  • Page 82 In addition there is a small bag marked K3s Hardware Spares Bag. It contains a collection of small parts that are easily lost. Normally you will not need any of the parts it contains to build your kit.
  • Page 83 ELECRAFT ILLUSTRATION DESCRIPTION PART NO. Typical Standoffs Standoff, 4-40, 1/4” (6.4 mm) long E700026 (May be round or hexagonal) Standoff, 4-40, 3/8” (9.5 mm) long E700153 Standoff, 4-40, 1/2” (13 mm) long E700061 Screw, 4-40, 3/16” (4.8 mm) Black, Flat...
  • Page 84 Lock Washer, #4, Internal Tooth E700010 4-40 Nut, Hex E700011 Screw, 4-40, 1/2" (13 mm) Black Pan E700177 Head E850714 Stainless Steel (SS) Hardware (in K3s RF Misc Bag) ELECRAFT ILLUSTRATION DESCRIPTION PART NO. Screw, 4-40, 3/16" (4.8 mm) Black Flat E700173 Head Screw, 4-40, 3/8"...
  • Page 85 E850717 K144XV Side Panel Hardware Envelope (in K3s RF Misc Bag) ELECRAFT ILLUSTRATION DESCRIPTION PART NO. Screw, 6-32, 1/4” (6.4 mm) Black Flat E700185 Head Lock Washer, #6, Split Ring E700095 Nut, 6-32 E700069 E850399 KSYN3A Envelope (in K3s RF Misc Bag)
  • Page 86 E850709 Front Panel Hardware Bag ELECRAFT ILLUSTRATION DESCRIPTION PART NO. Felt Washer E700033 Knurled Nut (Phones Jack) E700138 Standoff, 2/56, 5/16” (7.9 mm) long E700122 Typical Standoffs Standoff, 4-40, 5/16” (7.9 mm) long E700121 Standoff, 4-40, 5/8” (15.9 mm) long E700003 Standoff, Nylon, 5/8”...
  • Page 87 Do not mix these screws up with other parts in the Front Panel Hardware bag. Confusing them with other screws nearly the same length may destroy your front panel board. They are packaged separately for your convenience. You will be instructed when to use each screw in the assembly procedure. ELECRAFT ILLUSTRATION DESCRIPTION PART NO.
  • Page 88 E850695 K3s RF BSF Assembly (in box) RF Board E850651 ESD Sensitive PA Jumper Block Assembly (pre-installed on E850325 RF board) A- 14...
  • Page 89 E850701 K3s Chassis Set (in box) ELECRAFT ILLUSTRATION DESCRIPTION PART NO. Front Panel E100557SS Top Cover E100212 Rear Panel E100214SS Front Panel Shield E100216 Chassis Stiffener E100222 KIO3B Digital I/O Panel E100558SS In bag marked E850702 KXV3B Panel E850704 Loudspeaker with attached...
  • Page 90 E850312 Side Panels ELECRAFT ILLUSTRATION DESCRIPTION PART NO. Left Side Panel E100210 Right Side Panel E100211 E850313 Bottom Covers (Wrapped) ELECRAFT ILLUSTRATION DESCRIPTION PART NO. Bottom Cover A E100213 Bottom Cover B E100221 E850718 Carrying Handle Bag ELECRAFT ILLUSTRATION DESCRIPTION PART NO.
  • Page 91 Cables in Separate Bags ELECRAFT ILLUSTRATION DESCRIPTION PART NO. Power Cable APP and Ring Terminals KPCA-F RJ-45 to DE-9S E980297 P3-K3s Y cable E980296 USB A-B Cable E850720 A- 17...

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