2010/9/11 Felipe Ceglia <[email protected]>: > well... > > FT2000 is fed by its own internal PS. > > K3 is being fed by an alinco DM330 PS, and I have wounded a choke on a > flyback toroid on the K3 red/black PS wire. (I havent actually checked > its characteristics on VNA) > > microham is being fed from K3 12v port. > > I use no external speaker, but a heil headset > > the RFI gets into TX audio, blurring it a bit. > > I cant stop TX 2 rigs at once, as we are running WAE contest, and we > are alowed to do so. > > Probably computer tied to k3 has pin 1 problem, as I am using its > onboard soundcard. I will replace it later with a pci soundcard with > pin1 fixed. > > Thanks for your help & attention, > > Felipe - PY1NB > > 2010/9/11 Joe Subich, W4TV <[email protected]>: >> >> > When rig B TX, depending on band, it gets into K3 TX audio. >> >> Use standard audio decoupling techniques ... use separate power >> supplies for each transceiver and the microKEYER. Do not use >> Mic + Line with the K3, make sure that any external power supply >> does not tie V- to chassis (and/or third pin on the power cable), >> add decoupling (common mode) chokes to the power supply cables, >> use common mode chokes on all antenna cables and don't transmit >> on both radios at the same time. >> >> 73, >> >> ... Joe, W4TV >> >> >> On 9/11/2010 9:37 AM, Felipe Ceglia wrote: >>> Hi Jim >>> >>> Here is the setup: >>> >>> rig A: >>> K3 >>> heil proset on front panel >>> pc audio on rear plugs >>> cat plugged via microham microkeyer >>> nothing plugged on cw key jack (that minimized rfi a bit, it was >>> coming from microkeyer) >>> JRC 1kw amp >>> >>> rig B >>> ft2000 >>> cat cable to pc >>> icom pw1 amp >>> >>> The antennas are all near the shack. >>> >>> When rig B TX, depending on band, it gets into K3 TX audio. >>> >>> >>> 2010/9/11 Jim Brown<[email protected]>: >>>> On Fri, 10 Sep 2010 21:35:49 -0300, Felipe Ceglia wrote: >>>> >>>>> When second rig is TX on 80m, I get the whole audio being coupled by the >>>>> K3. >>>> >>>> Please give more detail about your problem. Are both radios transmitting at >>>> the same time? Both K3s, or one a different radio? Is there a computer >>>> feeding either radio? Where do you hear the RFI? Where do the radios get >>>> their DC power? Exactly. What kind of power supply? Is the V- terminal >>>> bonded to the chassis at the power supply? >>>> >>>>> Is this a common issue? >>>> >>>> It depends on the details of your problem. >>>> >>>>> Any tips to solve? >>>> >>>> It depends on the details of your problem. :) Once we hear more details, >>>> we >>>> can give some ideas. >>>> >>>> 73, Jim K9YC >>>> >>>> >>>> >>>> >>>> >>>> >>>> ______________________________________________________________ >>>> 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 >>>> >>> >>> >>> >> ______________________________________________________________ >> 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 >> > > > > -- > Felipe Ceglia - PY1NB > ------------------------------------------------------------------------------------- > PR1T team member /// Rio DX Group member /// Araucaria DX Group member > http://www.dxwatch.com /// http://reversebeacon.net /// > http://riodxgroup.dxwatch.com >
-- Felipe Ceglia - PY1NB ------------------------------------------------------------------------------------- PR1T team member /// Rio DX Group member /// Araucaria DX Group member http://www.dxwatch.com /// http://reversebeacon.net /// http://riodxgroup.dxwatch.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
