Re: QMX+ Power Output Question
Thanks Jeff, I'll do that next chance I get!
By
secondchancesailor
·
#142247
·
|
QMX+ Rev3 and Rev1 interchangeability
I have ordered another QMX+ kit.? I assume it will be Rev3.? I have a Rev 1 front panel board already constructed.? Can I use this Rev1 front panel board on a Rev3 main board?
Greg, ZL4GW
By
Greg Walsh
·
#142246
·
|
Re: QMX+ Power Output Question
That looks pretty good except for the higher bands. ?Verify the number of turns on lpf4 & lpf5. ?Also start with the turns evenly spaced around each toroid. ?The upper bands are very sensitive to
By
Jeffrey W Moore
·
#142245
·
|
Re: Windows WSJT-X audio input level adjustment
Yes found this to be useful. I adjusted all bands up by 10 dB. The settings were 54 and now 64. Just getting into the green zone on 6 metres and less than 40dB showing on the noisier bands.
de VK6XT
By
Rick Hill
·
#142244
·
|
Re: QMX+ rev 3 freezes shortly after boot
Did you use The Talentcell for 9 V and 12 volts?
Possibly flaky BMS?
By
George Korper
·
#142243
·
|
Re: I would like to purchase an assembled (working) 10 watt linear hf amplifier
What will you be driving it with?? ?Max input 50Milliwatts!
--
Allison
------------------
Post online only,
direct email will go to a bit bucket.
By
ajparent1/kb1gmx
·
#142242
·
|
Re: I would like to purchase an assembled (working) 10 watt linear hf amplifier
You’ll have to figure out TX RX switching too
By
Bruce Akhurst
·
#142241
·
|
Re: Tone or birdie every 500 Hz in USB mode
In my case, the CW-like stuff was coming from the GPS module. I remove the module and the CW stuff goes away.
Tony
AD0VC
________________________________
Sent: Tuesday, April 1, 2025 3:08 PM
To:
By
mux_folder2001
·
#142240
·
|
Re: Tone or birdie every 500 Hz in USB mode
If I disconnect the antenna, the birdies appear in the FT8 waterfall. When I connect the antenna, they disappear, presumably because the atmospheric noise swamps them. Maybe the AGC is a factor as
By
mux_folder2001
·
#142239
·
|
Re: QMX+ rev 3 freezes shortly after boot
Thanks Ludwig! To answer the above questions:
* When connecting to GND I used either a GND port on one of the JP nodes, or the bar on the edge of the board
* Measuring through VDD showed the same
By
Michael Shiplet
·
#142238
·
|
Re: Tone or birdie every 500 Hz in USB mode
That confirms what I thought. It still seems like there is something firmware that could change how this behaves. Was just hoping there was a quick, easy solution. With these here decoding MFSK modes
By
Erik Larson
·
#142237
·
|
Re: QMX+ rev 3 freezes shortly after boot
Ok real help has arrived! CUL.
By
George Korper
·
#142236
·
|
Re: Low current BIAS SMPS
Q501?
Nice find.
Reminds me why carefully inspecting the whole board under magnification is so important.
By
Stan Dye
·
#142235
·
|
Re: Help with QMX+ on CW
Thank you!
By
Braden Glett
·
#142234
·
|
I would like to purchase an assembled (working) 10 watt linear hf amplifier
I would like to purchase an assembled (working) 10 watt linear hf amplifier.
Thanks,
AC4OW, Sam
I have ordered a low pass filer from eBay:
Assembled 12v 100W 3.5Mhz-30Mhz HF power amplifier low
By
Sam Hanie
·
#142233
·
|
Re: Help with QMX+ on CW
Thanks again!
By
Braden Glett
·
#142232
·
|
Re: QMX+ rev 3 freezes shortly after boot
Also do you have the internal GPS? if so unplug it.
Also is it in a case? If so remove it.
By
George Korper
·
#142231
·
|
Re: QMX+ rev 3 freezes shortly after boot
Michael, where did you connect the GND probe of your Meter to the QMX GND?
3 V ... 3.3 V would be ok. This signal comes direct from a controller I/O-pin and the controller runs from VDD 3.3 V. 4 V is
By
@Ludwig_DH8WN
·
#142230
·
|
Re: QMX+ rev 3 freezes shortly after boot
Also replug the front panel and look at the display connection and while it's out check for a tiny bridge or a whisker that may be in there. That will answer a lot of questions before real assistance
By
George Korper
·
#142229
·
|
Re: QMX+ rev 3 freezes shortly after boot
Alright, did the reset, correctly selected the QMX+ version from initial selection, and had about 2 minutes of solid listening time to a QSO on 20m. Thought maybe the reset was going to fix it until I
By
Michael Shiplet
·
#142228
·
|