Fred: N6TV took a good back panel of my prototype unit at Visalia: http://www.elecraft.com/KAT500/kat500rear_visalia.jpg. It's sitting atop a KPA500.
The KAT500 back panel has two 15-pin ACC connectors labeled "control". One cable (XCVR) goes from your K3 to the KAT500, another (AMP) goes from the KAT500 to the KPA500. There is a 2.1 mm 11-15 VDC coaxial power connector, similar to that on the W2, P3, XG3, and KX3. There is a 3.5 mm TRS jack "PC DATA" used for RS-232 communications for firmware load and for the KAT500 Utility. This is intended for a KXUSB or KXSER or the W2/XG3/KX3 style RS-232 connector. The KAT500 Utility is needed for firmware load, and there's also a KAT500 "operate" page that allows complete control of the ATU and a view of its settings. You won't need a computer connection in normal KAT500 use, but it's available if you want detailed information about what's going on. There is an SO-239 transmitter input (from your KPA500's antenna connector) and three SO-239 output antenna connectors to your antennas. There is a wingnut on a good-sized screw for grounding the unit. The two RCA connectors labeled PTT RLY are not needed for the KPA500 as the amp key line interrupt is in the 15-pin ACC cable (along with band change lines and AUXBUS). If you're using another amplifier, you'll want to put the KAT500 in the keying/PTT line between the transceiver and amplifier. The KAT500 wants to hot-switch relays at exciter power, not QRO. The 3.5 mm connector labeled "AH4" (which will probably have a different silk screened label in the future) is intended to support radios using the ICOM AH-4 protocol. You can also ground the ring of this 3.5mm connector to start tuning if you want to press a TUNE button somewhere other than your K3's front panel ATU TUNE button or your KAT500's TUNE button. 73 de Dick, K6KR -----Original Message----- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Fred Jensen Sent: Saturday, June 23, 2012 9:18 AM To: Elecraft Reflector Subject: [Elecraft] KAT500 The back of my radio shelf is anything but "wireless." Can someone field testing the KAT500 enlighten me regarding the wires/cables it will bring to my copper collection? I have a K3, KPA500, and P3. <snip> ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
