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Re: Very simple QMX software request
In relation to this topic, is there a shortcut to the "tune SWR" menu? It would be very convenient to access this menu with a simple key press rather than navigate the menus, particularly when using
By Ellis Simon GM4GZW · #141825 ·
Re: SSB audio distortion #qmx #SSB Firmware beta 1_01_003 release #qmx #ssb
I just found another mic capsule on an Arduino MAX9814 board. Took that off to try again. Without calibrated, much better audio! Adjusted mic gain and compression. I set the noise gate to 30 and
By Mehmet Dinch · #141824 ·
Re: SSB audio distortion #qmx #SSB Firmware beta 1_01_003 release #qmx #ssb
Hi Myles, Yep, I tried the dial back as well. I eventually settled on mic gain of 65 but the audio was still rough without background noise. Thanks for sharing your settings. Are these setting post
By Mehmet Dinch · #141823 ·
Re: SSB audio distortion #qmx #SSB Firmware beta 1_01_003 release #qmx #ssb
Hans' suggestion of microphone can be found on the beta page: https://qrp-labs.com/qmxp/ssbbeta.html under the heading Microphone Choice.? Though I suspect this microphone is more sensitive than
By Myles · #141822 ·
Re: SSB audio distortion #qmx #SSB Firmware beta 1_01_003 release #qmx #ssb
Hi Hans, Yep, that did cross my mind.. In fact my first attempt was to use a PC gaming headset with mic. The audio gain was very low from the headset compared to the electret mic's I found in my
By Mehmet Dinch · #141821 ·
Re: Very simple QMX software request
OR...one could switch to their trusty Yaesu FT-450D, as I do, during antenna "tuning" :0) 72, Bill, N4QA/4/QRP Oak Island ( OKI ), North Carolina, U.S.A.
By Bill, N4QA/QRP · #141820 ·
Re: SSB audio distortion #qmx #SSB Firmware beta 1_01_003 release #qmx #ssb
Did you leave predistortion off during calibration? Let me give that a go.. Cheers, Mel. M0KMD
By Mehmet Dinch · #141819 ·
Re: SSB audio distortion #qmx #SSB Firmware beta 1_01_003 release #qmx #ssb
Yep, done that one. I was using headphones on the IC 7300 whilst testing TX on QMX. Cheers. Mel, M0KMD
By Mehmet Dinch · #141818 ·
Re: SSB audio distortion #qmx #SSB Firmware beta 1_01_003 release #qmx #ssb
Hi Mel It's possible the microphone isn't sensitive enough. Turning up the gain increases the audio but also the noise (if the mic SNR isn't enough) 73 Hans
By Hans Summers · #141817 ·
Re: SSB audio distortion #qmx #SSB Firmware beta 1_01_003 release #qmx #ssb
Make sure you are not getting feedback between QMX and IC7300. I had lots of feedback and distortion until I backed the audio way down on my receiving QMX+. I made two QSOs with good signal
By Mike Krieger · #141816 ·
Re: SSB audio distortion #qmx #SSB Firmware beta 1_01_003 release #qmx #ssb
HI Mel, See my earlier message with a similar issue. I had that distortion and then turned off predistortion etc. and it improved. I re-ran the calibration and then is was OK ( for a bit ) and now
By Si Smith · #141815 ·
Re: #qmx #SSB Firmware beta 1_01_003 release #qmx #ssb
Stan, mine has done that since 001, depending on what menu you have visited before you exit out. -- 73, Dan - W2DLC
By Daniel Conklin · #141814 ·
SSB audio distortion #qmx #SSB Firmware beta 1_01_003 release #qmx #ssb
Well, I bit the bullet and installed the 003 FW. Update of FW went all fine, no issue there. I wired up a electret mic I found in my junk box. Tested the mic on pc and sounded fine. I made an adapter
By Mehmet Dinch · #141813 ·
Re: mic test doesn't scroll up
I am having the same issue with screen on a Mac. I worked around this by using the microphone calibration from the menu on the LCD screen. -- Karl Heinz - K5KHK
By Karl Heinz Kremer - K5KHK · #141812 ·
Re: QMX+: quick exit from menu system?
+1 for that!! Bill W2EB East Syracuse, NY
By Bill · #141811 ·
Re: Very simple QMX software request
My preference would be that instead of shutting the power off a high SWR would switch to the Tune power, then when the SWR improves the power is restored (ideally after a delay).? This avoids the
By Chris · #141810 ·
Re: mic test doesn't scroll up
I have the same problem.? Settings for one mic seemed OK but I changed mic and it worked OK for a recent SOTA - no unfavourable comments on audio quality.? New mic on the way so I will repeat the
By M0JLA · #141809 ·
Re: QMX+ T507
I'm building a QMX+ and will get to that stage in a day or two but I really doubt that the PCB wiring is incorrect.? I checked some of the connections round T507 and it seems fine. I've always
By Chris · #141808 ·
Re: QMX+ Strange Audio Artifact - Help, Please...
The corresponding Mouser number is: 80-T495D477K006E100
By Stan Dye · #141807 ·
Re: QMX+: quick exit from menu system?
Hi Bruce Good idea, I can add that no problem. I suggest use of the normal exit button... But a long press to get all the way out of the menu, compared to the normal many-presses to come up one level
By Hans Summers · #141806 ·