I use two Ys. One side of the first Y goes from a K3 to a KAT500 and then the KAT500 goes to a KPA500. The other side of the K3 Y goes to a second Y that connects to a Top Ten Devices Band Aide and a US Interface Navigator.
Occasionally with the K3 turned off my Top Ten Devices Band Aide relays buzz a bit. I haven't figured out why. But I leave the Band Aide antenna switch in one of the "non auto" settings when the K3 is powered off. I think the solution might be to power the Band Aide from a power strip controlled by the K3 power switch, or Y the P3 power connector. Or perhaps add some high-Z pullups on the band lines in the Band Aide. As Don mentions, pullups can be an issue, particularly when some devices are not always powered. No problem thus far with band voltages when the K3 is powered on. I leave my KAT500 powered (although I usually push the front panel power button to turn the LEDs off). When the KAT500 has DC power, the Band lines and AUXBUS are pulled up (using what the microcontroller data sheets call "weak pullups"), which draw only microAmperes. The KAT500 sleeps when its power is off, which is a very low current draw, but it wakes up when you press the DC power (MODE) button. 73 de Dick, K6KR -----Original Message----- From: Elecraft [mailto:[email protected]] On Behalf Of Richard Thorne Sent: Monday, May 12, 2014 4:48 AM To: Elecraft Reflector Subject: [Elecraft] K3 - Accessory Jack - How Many Wye Cables? Currently I have a wye cable attached to the accessory jack on the back of my K3 which in turn is connected to a microham device and the KAT-500 tuner. I have a need to supply band data to another device, can I connect another wye to the current wye so I can connect 3 devices to the accessory jack? Thanks Rich - N5ZC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
