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****** Page 1 ****** ELECRAFT KAT500 AUTOMATIC ANTENNA TUNER ELECRAFT KAT 500 ANTENNA TUNER snR FAULT AUTO MAN BYP L— ANT ON OFF I—TUNE OWNER ‘ S MANUAL Revision A, November 1, 2012 Copyright 0 2012, Elecraft, Inc. All Rights Reserved

****** Page 2 ****** Contents Introduction Quick Start Customer Service and Support . Technical Assistance Repair Alignment Service ….. ….. ….. ….. ………………………………… Specifications Setup Cabling. Elecraft K 3 Transceiver and KPA500 Amplifier using DB 15 Interface Cables Elecraft K3 Transceiver and KPA500 Amplifier with Separate Key Line General Cabling Requirements Operation . 11 Interface Cable Wiring DB15 Interface Cable.. Icom AH-4 Interface . Tuning . Cancel Tuning Alternate Tuning Commands Bandswitching Fine Tuning ….. ….. ….. ….. ………………………………………………………………………………………………………………. 12 10 10 10 11 12 12 13 Turning the KAT500 Off Fault Conditions Utility Program KAT 500 Configuration Antennas…………………………………………………………………………………………………………………………………….. 14 Thresholds Memones… Saving Configuration Parameter Initialization (EEINIT) … Updating Firmware i Elecraft manuals with color images may be downloaded from elecraft.com. 13 13 14 14 14 14 14 15 15

****** Page 3 ****** Introduction The KAT 500 Automatic Antenna Tuner is designed to be closely integrated with the Elecraft K 3 transceiver and the Elecraft KPA500 amplifier although it may be easily used with other transceivers and amplifiers. Features include: Automatic band switching, covering the spectrum from I .8 through 54 MHz. Automatic antenna switching to connect one of three antennas according to the band selected. L and C settings for lowest SWR are stored in memory for extremely rapid frequency and band changes. Robust self-protection circuits that guard against damage from switching high-power RF or trying to match loads outside of its tuning range. Static bleed resistor built in to avoid damage from normal static buildup on antennas. Low profile enclosure that matches the footprint of the KPA500 and K 3, allowing the KAT 500 to be placed on top or under either unit (the KAT 500 is designed to support the weight of the KPA500). Quick Start To quickly set up and get started with your KAT 500 Automatic Antenna Tuner, turn to page 5 to hook up the unit and page 10 for operating instructions. Customer Service and Support Technical Assistance You can send e-mail to k3support@elecraft.com 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. 3

****** Page 4 ****** Elecraft’s I-Year Limited Warranty This wan-anty 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 wananty covers the origmal 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 palty, the third palty’s name and address must be provided to Elecraft at time of order to Insure wan-anty coverage. What is covered: During the first year after date of purchase, Elecraft will replace defective or missing pmts free of charge (post-paid). We will also conect any malfunction to kits or assembled units caused by defective parts and materials. Purchaser pays inbound shippmg to Elecraft for warranty repair, Elecraft will pay shippmg to retum 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 retum shippmg cost paid by owner. What is not covered: This warranty does not cover conection 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 wan-anty 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: ThlS wan-anty 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 Innited to any loss of business or profits. Specifications Frequency Range Supply Voltage and Current Weight Size Typical Matching Range and Power Limits Autotune Power Range 1.8 to 54 MHz, continuous. II to 15 VDC, 1.5A max (200 mA typical). 4.6 lbs (2.1 kg). Enclosure only, 1.5 x 10.8 x 10.0 in. I–IWD (3.8 x 27.4 x 25.4 em). With projections, 1.75 x 10.8 x 11.8 in. (4.4 x 28.4 x 30.0 cm). The projections are the bottom feet and the cable connectors on the rear. 3 1.8 30 60 MHz 600W into 5 Q to 500 Q (10:1 SWR). 1000W into 16 Q to 150 Q (3:1 SWR). 600W into 10 Q to 500 Q (5:1 Low Impedance, 10:1 High Impedance SWR). IOOOWint0 16 Qto 150 Q (3:1 SWR). 500W into SWR (10 Q to 250 Q). Matching specified to a l. to 1.6: I output SWR. Power rating is ICAS (Intermittent Commercial and Amateur Service). low —100w. For better matching accuracy, tune with >20W. 4

****** Page 5 ****** Setup NOTE: Although the KAT500 works equally well with either a transceiver or a stand-alone transmitter, transceiver is used throughout this manual for simplicity. The KAT 500 can be used with any 1.8 through 54 MHz transceiver in the 20 to 1000 watt output range, although the KAT 500 integrates most closely with the Elecraft K 3 transceiver and the KPA500 amplifier. The KAT 500 may be placed under or above either the Elecraft K3 transceiver or the KPA500 solid state amplifier. The KAT 500 can easily handle the weight of the KPA500 amplifier. The KPA500’s footprint matches both units and the feet provide adequate spacing for proper cooling of the K3 or Cabling When using the KAT500 with non-Elecraft equipment, refer to General Cabling Requirements on page 9. Diagrams are provided below for stations using the Elecraft K3 and KPA500. Elecraft K3 Transceiver and KPA500 Amplifier using DB 15 interface cables. • Elecraft K3 Transceiver and KPA500 Amplifier with a separate Key line that can be used to control external equipment (e.g. a Stepper-IR antenna controller). Elecraft K3 Transceiver and KPA500 Amplifier using DB15 Interface Cables. Refer to Figure I (page 6) and the following notes: 1 50-ohm coaxial RF cables with PL-259 connectors. When using a transceiver with multiple antenna outputs such as the K3, be sure the correct antenna connection is selected. The KAT 500 allows up to three antenna connections, selected from the front panel (See Operation, pg 10). 2 Two wire power cable with a female 2.1 mm coaxial connector (supplied). Connect to the station I I to 15 VDC power supply with the white striped lead to the positive terminal. Do not take this power from the K3 ‘s 12 VDC output connector, even if it has been upgraded for 1 Ampere. @DB 15 interface cables with male and female connectors (one cable supplied). Do not use common VGA cables; they are not wired correctly for this use (See Interface Cable Wiring on page 10). One cable is supplied with the KAT 500. If you need a second cable, you can order E850463 from Elecraft or you can make your own. These cables provide the best integration of the KAT 500 with the and KPA500 by: Including the essential Key line that inhibits the KPA500 amplifier. The Key line circuit passes through the KAT 500 where it is automatically opened whenever a KAT 500 tune operation occurs. This inhibits the KPA500 to avoid applying excessive RF power while the KAT 500 is tumng. Ifyou need access to the key line to control external equipment, see Elecraft K3 Transceiver and KPA5()() Amplifier with Separate Key Line on page 7. Providing band data from the K 3 to the KAT 500 that allows it to switch to the current band at the same time as the K3 instead of waiting until RF is applied and allows the KPA500 amplifier to send the K3 status information (see the KPA500 Owner ‘s Manual for complete details). 5

****** Page 6 ****** 4 Computer interface cable with a 3.5 mm T-R-S connector at one end and USB connector at the other end supplied with the KAT 500 (supplied). Not required for normal operation, but used for controlling the KAT 500 from a personal computer, customizing the KAT 500’s operation or for updating firmware (see Utility Program on page 14). 1 TO ANTENNA OR DUMMY LOAD ANT 3 O KAT500 KPA500 1 o OR AUX RF OR ANT 2 o TO 11-15 VDC SUPPLY WHITE STRIPE 2 ANT 1 1 RFO TPUT o O RF INPUT 11-15 TUNE PTT RLY 4 TO PERSONAL COMPUTER CAUTION! SET SWITCH AND INTERNAL TAPS TO CORRECT LINE VOLTAGE 3 CONTROL AMP o o 3 RS232 (PCi 0000 o 00000 RS232 (XCVR) GND ALC OUT AUX o PA KEY FCC It): UTR.KPA5ØO ELECR INC. SERIAL NO. DO NOT USE STANDARD VGA CABLE! SEE TEXT 3 XVTR —t O our 00000 out IN 001100 Figure l. Cabling Diagram: Elecraft K 3, KPA500 and KAT 500 Using DB 15 Interface Cables. 6

****** Page 7 ****** Elecraft K3 Transceiver and KPA500 Amplifier with Separate Key Line Refer to Figure 2 (page 8) and the following notes: 1 50-ohm coaxial RF cables with PL-259 connectors. NVhen using a transceiver with multiple antenna outputs such as the K3, be sure the correct antenna connection is selected. The KAT 500 allows up to three antenna connections, selected from the front panel (See Operation, pg 10). 2 Two wire power cable with a female 2.1 mm coaxial connector (supplied). Connect to the station I I to 15 VDC power supply with the white striped lead to the positive terminal. Do not take this power from the K 3 ‘s 12 VDC output connector, even if it has been upgraded for I Ampere. 3 Power Amplifier Key cables with RCA connectors (one cable supplied). These cables inhibit the amplifier to avoid applying excessive RF power while the KAT 500 is tuning. You may add other equipment that requires the amplifier be inhibited in series with this circuit at any point. The circuit inside the KPA500 is a simple relay closure, so it does not matter which connector goes into each jack. DB 15 interface cables with male and female connectors (one cable supplied). Do not use common VGA cables; they are not wired correctly for this use. These cables are optional since a separate PA Key line is used, but they provide band data from the K3 to both the KAT 500 and KPA500, allowing them to switch bands instead of waiting the them to sense the frequency and switch bands when RF power is applied. A IMPORTANT: The key line in the DB15 interface cable must be opened so that external equipment inserted in the key line can inhibit the amplifier when needed. If you need a second cable, order the KPAK3AUX Elecraft cable set which includes the key line interrupter. If you make your own cable you can leave pin 10 at the connectors open (see Interface Cable Wiring on page 10). 5 Computer interface cable with a T-R-S connector at one end and USB connector at the other end supplied with the KAT 500. Not required for normal operation, but used for controlling the KAT 500 from a personal computer, customizing the KAT 500’s operation or for updating firmware (see Utility Program on page 14). 7

****** Page 8 ****** TO ANTENNA OR DUMMY LOAD 1 OR 1 ANT 3 O KAT500 KPA500 o OR ANT 2 O TO 11-15 VDC SUPPLY WHITE STRIPE TO + ANT 1 o 1 1 RFO TPUT O o RF INPUT 1 3 2 11-15 0 TUNE 5 3 TO PERSONAL COMPUTER CAUTION! SET SWITCH AND INTERNAL TAPS TO CORRECT LINE VOLTAGE EXTERNAL DEVICE REQUIRING CONTROL OF THE KEY LINE 4 CONTROL AMP o 4 O 4 RS232 (PC) ALC OUT 0000 o 00000 AUX o o GND RS232 3 A KEY FCC 10: UTR*PA5ØØ ELECRFT. INC. SERIAL DO NOT USE STANDARD VGA CABLE! SEE NOTE 4 KEY LINE INTERRUPTER SEE NOTE C RS232 o .00 SHAS OAO sye«o C r RXANT„ o Figure 2. Cabling Diagram: o ÜöA syeneo ooööö KEY PtTIN KEY 0 010 0 @ 3 Elecraft 1<3, KPA500 and KAT500 Using DB 15 Interface Cables with Separate Key Line. 8 ****** Page 9 ****** General Cabling Requirements The KAT 500 works well with equipment other than the Elecraft K 3 transceiver and KPA500 amplifier. Figure 3 shows the basic cabling required to work with any transceiver or transceiver and amplifier combination. See notes below for details about each cable. TO 11-15 VDC SUPPLY WHITE STRIPE TO ANTENNA OR DUMMY LOAD ANT 3 O KAT500 OR ANT 2 O ANT 1 o XMTR KEY LINE 11-15 TUNE KEY LINE ICOM INTERFACE CONTROL TO PERSONAL COMPUTER TO TRANSCEIVER OR AMPLIFIER Figure 3. General Cabling Requirements. 1 50-ohm coaxial RF cables with PL-259 connectors. When using a transceiver with multiple antenna outputs such as the K3, be sure the correct antenna connection is selected. The KAT 500 allows up to three antenna connections, selected from the front panel (See Operation, pg 10). 2 Two wire power cable with a female 2.1 mm coaxial connector (supplied). Connect to the station I I to 15 VDC power supply with the white striped lead to the positive terminal. 3 Power Amplifier Key cables with RCA connectors (one cable supplied). These cables inhibit the amplifier to avoid applying excessive RF power while the KAT 500 is tuning. You may add other equipment that requires the amplifier be inhibited in series with this circuit at any point. The circuit inside the KPA500 is a simple relay closure, so it does not matter which connector goes into each jack. 4 Optional user-supplied cable with a 3.5 mm T-R-S jack that allows Icom transceivers using the AH-4 protocol to control the KAT 500 via a user-supplied cable. 5 Computer interface cable with a T-R-S connector at one end and USB connector at the other end supplied with the KAT 500 (supplied). Not required for normal operation, but used for controlling the KAT 500 from a personal computer, customizing the KAT 500 's operation or for updating firmware (see Utility Program on page 14). 9 ****** Page 10 ****** Interface Cable Wiring DB15 Interface Cable The DB 15 Interface cable may be ordered from Elecraft (order E850463). Optionally, you can construct your own cable using male and female DB-15 connectors wired as follows. CONNECTOR PINS 2 3 5 9 10 11 12 13 14 15 2 3 5 9 10 11 12 13 14 15 SIGNAL AUXBUS BAND 1 GND BAND 2 PTT (See Note) Inhibit GND BANDO BAND3 ALC (Normally not used. See your KPA500 Owner's Manual) NOTE: If you have devices that need access to the PA Key line (e.g. SteppIR controllers, etc.), leave pin 10 open and use the external key line cable (see Figure 2, cable 3 . If you purchased the KPAK3AUX cable set which includes the DB 15 Interface Cable, a key line interrupter is provided that plugs in between the cable and the K3 to interrupt the pin 10 circuit without modifying your cable. Icom All-4 Interface This cable uses a 4-pin Icom Molex connector at one end and a 2.1 mm coaxial power connector and a 3.5mm T-R-S plug at the other end. The cable is wired as follows: MOLEX CONNECTOR Pin 1 Pin 2 Pin 3 Pin 4 SIGNAL Key Start +12 VDC Ground T-R-S CONNECTOR POWER CONNECTOR Tip Ring NC Shield NC NC Center Outer Shell NOTES: Pin I is at the triangular end of the Molex connector. NC No connection. 10 ****** Page 11 ****** Operation AUTO MAN MODE MODE BYP ELECRAFT KAT500 ANTENNA I—ANT ANTENNA SELECTOR AND INDICATORS TUNER TUNE 1.2 SWR 1.5 FAULT TUNE CONTROL, CONTROL AND INDICATORS SWR AND FAULT INDICATORS Figure 4. KAT500 Front Panel Controls. Tuning Be sure the KAT 500 is connected to your station equipment as shown under Cabling (pg 5). Apply power to the KAT 500. It will turn on automatically. Tap MODE, if necessary, to select AUTO. Tap ANT to select the antenna you wish to use. Tap TUNE. AUTO will begin to flash. Apply RF power between 10 and 100 watts. Most transceivers produce RF in this range when driving an external amplifier. The KAT 500 will open the key line to disable the external amplifier so the transceiver drives the KAT 500 directly during the tune cycle. You will hear relays operating until the selection of inductance and capacitance has been found that yields a low SWR. (See Fault Conditions on pg 13 if the FAULT LED lights.) An approximate SWR is indicated on the TUNE LEDs- The KPA5()0 Utility program (pg 14) may be used to display a more accurate SWR reading. After successfully tuning, the KAT 500 stores the settings and antenna selected in memory from which it is recalled almost instantly when returning to that frequency later. The entire spectrum from I R through 54 MHz is divided into frequency segments and the tuning information is stored for each segment. Since retuning is normally required over a narrower frequency range on the lower frequencies to maintain a low SWR, the lower frequencies have narrower segments assigned as follows: Below 3 MHz the segments are 10 kHz wide. From 3 MHz through 26 MHz the segments are 20 kHz wide. From 26 MHz to 38 MHz the segments are 100 kHz wide. From 38 MHz to 54 MHz the segments are 200 kHz wide. In AUTO mode, if you QSY such that the SWR rises above 1.8:1 the KAT 500 will automatically retune when you transmit on the new frequency. The KAT 500 will open the key line to disable your amplifier briefly until the tune cycle is completed. The new frequency and settings are stored in memory. Ifthe SWR measured by the KAT 500 is 1.2:1 or below, the KAT 500 automatically switches to bypass in that frequency segment. Ifthe S WR remains above 2.0: I after a tune operation, the KAT 500 will hold the key line open to protect your amplifier from the high S WR load. 11 ****** Page 12 ****** The SWR limits that initiate an automatic TUNE in AUTO, switches the KAT500 to bypass or which causes the KAT 500 to hold the key line open to protect the amplifier can be changed using the Utility Program. See KAT50() Configuration (pg 14) for details. You can prevent automatic tuning by selecting the MAN (manual) mode. In MAN, the KAT 500 will automatically choose a new tuner setting based on the band and antenna selected, but you must tap TUNE and then apply RF power to imtiate a tuning operation if needed. BYP mode bypasses the KAT 500 completely, routing the RF input to the selected ANT connection. O OPERATING TIP: If you want quick QSY capability, do a tune operation as described above on your favorite frequencies, using each antenna you might select. This stores the correct settings in the KAT 500 memory so they will be recalled almost instantly when you return to that frequency. If you have changed your antenna system, it may be helpful to use the KAT 500 Utility program to erase the previously stored data before tuning again to establish the new settings (see Utility Program, page 14) Fine Tuning Ifa tune operation results in an undesirably high SWR, you can immediately order another tuning cycle by tapping TUNE again within 5 seconds. The KAT 500 will repeat the tune operation starting with the settings just found, but using finer step sizes in L and C values. This may result in a lower SWR. The new values are stored and will be used when returning to this frequency. You can also manually adjust the L and C values using the KAT 500 Utility Program (page 14). Load the Utility program, click on the OPERATE tab and then adjust the L and C values using the radio buttons or up and down arrows. When finished, click on MEMORIZE to store the new settings. Cancel Tuning Tap TUNE to cancel a tune command. Alternate Tuning Commands A TUNE command can be initiated through the RS232 port using the KAT 500 Utility program. Load the Utility program, click on the OPERATE tab and then click on TUNE. You can initiate a TUNE command through the rear panel TUNE jack (see Figure 3) with a transceiver using the AH-4 protocol or by momentarily shorting the ring to ground. 12 ****** Page 13 ****** Bandswitching Some non-Elecraft amplifiers may be damaged if the KAT 500 opens the key line while the amplifier is producing full RF output. This can happen when changing bands because the KAT 500 senses the frequency of the RF signal, opens the key line, and then switches to the settings for that frequency from memory or initiates a tune operation. The KPA500 amplifier is designed to have the key line interrupted while producing full output without damage. The DB 15 interface cable between the K 3, KAT 500 and KPA5()0 (Figure I cable@or Figure 2 cable 4 ), ensures that the KPA500 amplifier and KAT 500 change bands at the same time as the K 3. A CAUTION: When using a non-Elecraft amplifier, change bands as follows to avoid damage to your amplifier. • Place the amplifier in standby. • Switch the transceiver or transmitter to the new band. • If needed, manually switch the amplifier to the new band. • If your amplifier requires manual tuning, connect it to a suitable dummy load. (You can attach the dummy load to one of the KAT5()0 antenna connectors, switch the KAT500 to BYP and select that connector with the ANT switch.) Tune up your amplifier into the dummy load per the manufacturer's instructions. Return the mode to AUTO when finished. • Generate a CW signal from your transceiver or transmitter between 20 and 100 watts. This will allow the KAT500 to change bands, change antennas, if required, and switch to the tuning values for that frequency stored in memory or perform a tune cycle, if needed. • Switch the amplifier from standby to operate. Turning the KAT500 Off Hold MODE or remove power to switch the KPA500 off When off, ANT 1 is automatically selected. Unused antenna connections are not grounded but the KAT 500 contams a resistor to bleed off normal static buildup. Fault Conditions A fault will occur if: The RF drive power exceeds 110 watts during a TUNE operation. This protects the relays from damage due to excessive RF power while switching. If this fault occurs, be sure you have the PA Key circuit installed, either through the DB 15 intereface cable or using separate key line cables (see Cabling, pg 5). • The impedance of your antenna is outside of the tumng range so an acceptable SWR cannot be found. Reset the fault by tapping the TUNE switch or cycling power off, then on again with the MODE switch. 13 ****** Page 14 ****** Utility Program To use the Utility Program you will need. A personal computer. The KAT 500 Utility Program available free from Elecraft at elecraft.com. • The RS-232 cable with a USB connector supplied with your KAT 500. Connect your computer to the KAT 500 using the interface cable connected to the PC DATA jack and load the Utility Program. Click on the PORT tab and select the port your computer is using to communicate with the KAT 500. Click on TEST COMMUNICATIONS and you will see a pop-up stating that the Utility program is communicatmg with the KAT 500 if everything is working properly. Detailed operating instructions for the Utility program are provided in the Utility Help screens. KAT 500 Configuration You can configure the KAT 500 to best support your installation. Click on the Utility program CONFIGURATION tab and then on the Per Band Configuration button. After making your choices, click on the APPLY button at the bottom. Antennas You can select which antenna connectors are active (Enabled) on each band. Antenna connectors are disabled by clicking on the check mark to clear it. Disabling antenna connectors will cause them to be skipped over when cycling through the options with the front panel ANT switch or in the Utility Operate tab. You can also select which ANT connector you prefer to use on each band and it will be automatically selected when you return to that band. You can change the selection to any other antenna connector, using provided it has not been disabled. Thresholds You can set the S WR thresholds above which a tumng cycle will be started in AUTO mode, or below which the KAT 500 will automatically switch to bypass. Also, you can set an S WR threshold at which the key line will not close to enable the external amplifier to protect it from excessive SWR These thresholds can be set the same for all bands, or Individual values can be entered for each band. Memories You can erase all ofthe stored tumng memory data for the entire KAT 500, or just the memones associated with a particular ANT selection and band. Saving Configuration You can save the configuration to a file on your computer so that you can restore it quickly without needing to re-enter the data. 14 ****** Page 15 ****** Parameter Initialization (EEINIT) It is possible, though rare, for parameters to become altered in such a way as to prevent the firmware from running correctly. If you suspect this, you can reinitialize parameters to defaults, then restore a previously-saved configuration (or restore the configuration manually using the utility program). l. Click on the Command Tester tab. 2. Type EEINIT; 3. Restore your configuration, either from a previously-saved configuration file or manually as described under KAT 500 Configuration above. Updating Firmware Although the KAT 500 is shipped with current firmware installed, from time to time updated and improved firmware may become available. To update firmware, connect your KAT 500 to your computer and launch the KAT 500 Utility program. Updated firmware may be obtained in two ways. l. Click on Firmware tab and then the Click on Copy Firmware Files from Elecraft to download the latest production released firmware or, 2. Download the new file from the Elecraft web site manually and place it in a local folder, then click on Browse… to locate the folder on your computer. This is the way to access the latest Beta firmware available from Elecraft. To install new firmware in your KAT 500, click on the utility Send Firmware to the KAT 500 button to start the transfer. Follow any on-screen instructions. Be sure to check the notes supplied with the new firmware. They may include changes that affect the instructions in this manual. If you don't have Internet access, you can obtain a firmware upgrade on CD. If you don't have a computer, you can send your KAT 500 to Elecraft to be upgraded. See Customer Service and Support, pg 3. 15

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ELECRAFT KAT500 (01) PDF MANUAL

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