Introduction KAT500 High-Power Auto-Tuner & Smart Antenna Switch The KAT500 Automatic Antenna Tuner is designed to be closely integrated with the Elecraft K3 transceiver and the Elecraft KPA500 amplifier although it may be easily used with other transceivers and amplifiers. Overview OVERVIEW The KAT500 is a high power autotuner that can be used with both the K3S/KPA500 or with most any other HF amplifiers and transceivers. The KAT500 uses the same topology and high performance tuning algorithms as the popular autotuners in the K3S, KX3 and KX2. Typical matching range at 500 W is up to 10:1 on most bands. This also equates to a range of 3:1 for higher power levels, up to 1000 W. The KAT500 has a front panel SWR display and three selectable antenna outputs. It is the same width and depth as the K3 and the KPA500, and it is just 1.5" high.   Features include: Automatic band switching, covering the spectrum from 1.8 through 54 MHz. Automatic antenna switching to connect one of three antennas according to the band selected. L and C tuning element 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 K3S, allowing the KAT500 to be placed on top or under either unit (the KAT500 is designed to support the weight of the KPA500) PowerCombo KPA500 & KAT500 PowerCombo Package Plays Well With Most Popular Rigs! Add more punch to your signal with Elecraft's Power Combo and take your transceiver to a full 500 watts out.In addition to the K3 and K3S, the DXpedition-proven KPA500 and KAT500 combo is available for most recent Icom, Yaesu, Kenwood and Flex transceivers. We've taken the guesswork out of operating by providing cabling and instructions for some of the most popular rigs in shacks today. Cables Elecraft Cable # Transceiver Model Notes E100416 (Included w/ Amp) Phono Cable works with most radio models.  Please Select additional cable(s) below based on desired operating mode. Standard Mode – Keying.   Phono Keying Cable included with Amp.  Amp/ATU selects band and freq. by using its internal frequency counter to measure TX freq. in this mode. Works with all radios with a keying output phono jack. KPAK3AUX K3, K3s Enhanced Mode. Aux Cable set for KPA500 + second E850463 aux cable for KAT500. AUX Cable Set incl: 15-Pin to 15-Pin DE-15 + Key Line Interrupter adapter. Cables for non-Elecraft Transceivers Yaesu Cable # Yaesu Model Notes E100416 (Included w/ Amp) Phono Cable works with most radio models.  Please Select additional cable(s) below based on desired operating mode. Standard Mode – Keying.   Phono Keying Cable included with Amp.  Amp/ATU selects band and freq. by using its internal frequency counter to measure TX freq. in this mode. Works with all radios with a keying output phono jack. CBL-YAESUKEY FT-817, FT818 Standard Mode – Keying.  Incl. 8-pin MiniDIN to phono CBL-YAE-BANDKEY FT-920, FT990, FT1000 family, FT2000, FT5000, FT9000 family Intermediate Mode. Incl. 8-pin DIN to DE15 cable for band data plus keying, plus Aux Cable to connect the KAT500 to the KPA500. CBL-YAE-BKMINI FT857, FT891, FT897, FT991 Intermediate Mode. Incl. 8-pin MiniDIN to DE15 cable for band data plus keying, plus Aux Cable to connect the KAT500 to the KPA500. CBL-YAE-BKDIN10 FT450, FT1200 Intermediate Mode. 10-Pin MiniDIN to DE15 cable for band data plus keying, plus Aux Cable to connect the KAT500 to the KPA500. CBL-YAE-BKDA15 FT3000, FTdx101 Family Intermediate Mode. DA15 to DE15 cable for band data plus keying, plus Aux Cable to connect the KAT500 to the KPA500. Icom Cable # Icom Model Notes E100416 (Included w/ Amp) IC7300, 7600, 7700, 7851, 9100 Standard Mode – Keying.   Phono Keying Cable included with Amp.  CBL-ICOMKEY Icom "small" radios: IC703, 706, IC7000 Standard Mode. ICOMKEY to KAT500. Use Phono cable from the KAT500 to the KPA500. (Phono Cables incl. w/Amp & Tuner.). Flex Cable # Flex Model Notes E100416(Included w/ Amp)  Flex 3000, 5000 Standard Mode – Keying.   Phono Keying Cable included with Amp.  CBL-FLEX-PWRCMB Flex 6000-family Enhanced mode. Incl. KUSB cable for freq. data, null modem cable, gender changer to KPA500 (Phone Cable for keying incl. w/Amp) Kenwood Cable # Kenwood Model Notes E100416 (Included w/ Amp) Phono Cable works with most radio models.  Please Select additional cable(s) below based on desired operating mode. Standard Mode – Keying.   Phono Keying Cable included with Amp.  Amp/ATU selects band and freq. by using its internal frequency counter to measure TX freq. in this mode. Works with all radios with a keying output phono jack. CBL-KENKEY Kenwood TS140, 430, 440, 450, 570, 820, 830