[Elecraft] KAT500 producing S4-5-birdie on 28004.5

Hi all, KAT500 + KPA500 connected to K3 through coax and elecraft interfacecables. NO antenna connected to KAT500 (all 3 connectors open) KAT500 and K3 connected to same DC-supply. KPA500 off (AC cord disconnected) Results: KAT500 switched on, Mode = auto, ANT = 1, no antenna connected: *S4

Re: [Elecraft] KAT500 producing S4-5-birdie on 28004.5

Arie, Please see the firmware release notes here: http://www.elecraft.com/KAT500/kat500_software.htm 73, Tony K4QE On Sat, Jun 29, 2013 at 7:02 AM, Arie Kleingeld PA3A p...@xs4all.nl wrote: Hi all, KAT500 + KPA500 connected to K3 through coax and elecraft interfacecables. NO antenna

Re: [Elecraft] KAT500 producing S4-5-birdie on 28004.5

Aire, Yes, that spurious signal on 28.004.5 is real and generated within the KAT500. Recent KAT500 beta firmware optionally shuts off an oscillator inside the KAT500 to suppress the spur. The oscillator is automatically turned back on by a number of events, such as pressing a button or

Re: [Elecraft] KAT500 producing S4-5-birdie on 28004.5

Thanks for all info on the KAT500 beta FW. Sorry, I was not aware that the problem had been bypassed in a beta version. Am a new KAT / KPA 500 user. 73 Arie PA3A K3 #1255 __ Elecraft mailing list Home:

Re: [Elecraft] KAT500 producing S4-5-birdie on 28004.5

/*Aire my KAT500 antenna tuner has the same issue with the signal on 28.004.5 Regards Art ka9zap */ On 6/29/2013 6:11 AM, K1GQ wrote: Aire, Yes, that spurious signal on 28.004.5 is real and generated within the KAT500. Recent KAT500 beta firmware optionally shuts off an oscillator