You did turn the sub on in the menu, right? Jim K0XU [email protected]
On Tue, Nov 4, 2025, 10:32 Curt KU8L via Elecraft <[email protected]> wrote: > Good Morning Folks > I have finally added a couple of K3 to the contest station lineup here > and just coming up to speed on how to use them. Had a K2 for a while > but big difference! > > K3 100W, KAT3, 2m Module, Kiob, ser 00872 MCU vers 5.62 Has original > Synths and Sub rcvr . > > Problem is no signal thru SUB. It appears to be working because I hear > normal background noise which comes up with RF gain and audio prperly > splits to right and left headset channels. > > I went thru getting my head around the options for SUB antenna sources > and after deciding I definitely wanted to use the MAIN shared option I > opened the unit to check how the SUB aux antenna was connected. Removed > the TMP jumper to the KAT3. > > Set config to ANT=BNC, pwr cycled, and selected BSET RX ANT is set to > MAIN. My understanding is this should share the main ANT1 or ANT2 > selection of the main rx with the SUB. > > All else looks to be in order inside but still no Signal from SUB. > > Before I remove the 2mtr unit and lift the SUB out to be sure the SUBIN > connections are OK looking for any other things to check. This was a kit > build but had sat unused for a couple years after owner went SK. Clean > and looks good inside but no idea if it ever worked > > Final thought was to try replacing the TMP connect to SUB Aux and KAT3 > and reconfig for using the non tx ant to verify the SUB operation and > perhaps narrow the field to looking at the SUBIN connect and the Jumper > W4 situation. > > Any ideas on where to go next with this? > > Thank you in advance for any advice. > > Curt > KU8L > > > > -- > This email has been checked for viruses by Avast antivirus software. > www.avast.com > ______________________________________________________________ > 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]
