Normal 73, Tom W4KX
Sent from my iPad > On Feb 27, 2018, at 11:23 AM, Mike Flowers <[email protected]> wrote: > > There is a CONFIG setting where you can choose BAL or NOR for the SubRX. > > I had BAL selected on my K3 and noticed low AF output from the SubRX. > Changing this to NOR increased the AF output and made the SubRX behave the > way I thought it should. > > Sorry that I don’t remember the parameter name ... > > -- Mike Flowers, K6MKF, NCDXC - "It's about DX!" > >> On Feb 27, 2018, at 8:11 AM, Thomas Doligalski <[email protected]> wrote: >> >> Checked that: antenna is the same for both receivers. And, the RF signal >> level is the same for both: its the AF gain that has the difficulty. >> >> 73, Tom W4KX >> >> Sent from my iPad >> >>> On Feb 27, 2018, at 11:08 AM, brian <[email protected]> wrote: >>> >>> Tom, >>> >>> Any chance you haven't directed the proper antenna to the subrx? >>> Try the MAIN antenna on both RX's. Choice is band dependent, so you have >>> to make the right choice on all bands. It gets a bit more complicated if >>> you have a tuner. The default antenna for the subrx becomes the UHF >>> connector which is not the transmit antenna. >>> >>> The above is what I recall from years ago when I first installed a sub-rx. >>> My memory may be faulty. >>> >>> 73 de Brian/K3KO >>> >>>> On 2/27/2018 15:11 PM, Thomas Doligalski wrote: >>>> Also tried the front panel earphone jack, with the same results as the >>>> rear panel jack. >>>> >>>> 73, Tom W4KX >>>> >>>> Sent from my iPad >>>> >>>>> On Feb 27, 2018, at 10:05 AM, Thomas Doligalski <[email protected]> wrote: >>>>> >>>>> I use stereo earphones plugged in the rear. I get equal volume in both >>>>> earphones with the same AF gain settings until I turn on the sub >>>>> receiver, when I get the diminished volume in the right headphone and >>>>> have to turn up the sub receiver gain. >>>>> >>>>> Thanks, 73 Tom W4KX >>>>> >>>>> Sent from my iPad >>>>> >>>>>> On Feb 27, 2018, at 10:00 AM, brian <[email protected]> wrote: >>>>>> >>>>>> Thomas, >>>>>> >>>>>> You don't say if you're using earphones or speakers. >>>>>> ------------------------------------------------------------- >>>>>> If earphones: >>>>>> >>>>>> Are your earphones plugged into the front panel or back panel? >>>>>> I had the earphone jack in the back make poor contact with the earphones >>>>>> and low audio in one of the two channels. To troubleshoot, I plugged >>>>>> earphones in the front jack and things were AOK. >>>>>> >>>>>> Try plugging earphones into the "other" jack. >>>>>> >>>>>> Don't overlook the earphones being the potential problem. >>>>>> >>>>>> Speakers OK? >>>>>> ---------------------------------------------- >>>>>> If speakers: >>>>>> Are earphones OK? >>>>>> >>>>>> 73 de Brian/K3KO >>>>>> >>>>>>> On 2/27/2018 14:40 PM, Thomas Doligalski wrote: >>>>>>> Larry W0LRF wrote earlier this month: >>>>>>> >>>>>>>> There have been a few posts on this subject, but none had answers. >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> Both my main and sub receiver are on the same antenna. >>>>>>>> >>>>>>>> The audio volume from the sub is much lower. >>>>>>>> >>>>>>>> The AF for the main is…… let’s say at 9 o’clock….. to get equal volume >>>>>>>> level from the sum… Sub AF has to be at 3-4 o’clock. >>>>>>>> >>>>>>>> RF on both are the same. >>>>>>>> >>>>>>>> Any suggestions? Is this normal? >>>>>>>> >>>>>>> >>>>>>> I have the same problem with K3 #969. >>>>>>> >>>>>>> All was fine when I first installed the KRX3, right after it was >>>>>>> released. However, when I installed the new K3SYNA boards the audio >>>>>>> problem for the sub receiver manifested itself. >>>>>>> >>>>>>> I have verified that the settings and filters for the sub receiver are >>>>>>> the same as the main receiver. Note that the RF signal between the two >>>>>>> receivers is identical, as shown on the K3 S-meter and the P3 display. >>>>>>> >>>>>>> Recently I noted the latest KRX3 installation manual (downloaded from >>>>>>> electraft.com) has a section entitled "Checking and Modifying Resistor >>>>>>> R91 and DAC Input Circuits”. The manual I followed when installing my >>>>>>> KRX3 only had a similar section entitled “Checking and Modifying >>>>>>> Resister R91”. >>>>>>> >>>>>>> The latest KRX3 installation manual states that the missing step >>>>>>> involves cutting two traces on the main board board to the left of R91, >>>>>>> with the justification that “This modification ensures the >>>>>>> digital-to-analog converters (DACs) always receive the proper signal >>>>>>> levels. It has been incorporated into all later K3s.” >>>>>>> >>>>>>> Could this be the cause of my Low sub receiver volume problems? Should >>>>>>> I cut these traces now? >>>>>>> >>>>>>> Thanks and 73! >>>>>>> >>>>>>> Tom W4KX >>>>>>> ______________________________________________________________ >>>>>>> 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] >>>>>>> >>>>>>> --- >>>>>>> This email has been checked for viruses by AVG. >>>>>>> http://www.avg.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]
