Re: QMX (1_00_020) SWR - Issue?
How does the QMX behave with a 50 ohm dummy load? If the QMX reads a low VSWR with a dummy load, the QMX is working properly. In your previous post showing the Putty screen, VSWR was shown as 1.94 to
By
Steven Dick, K1RF
·
#125856
·
|
Hermes Lite 1 : RM Italy BLA 350 : QRP Labs 10W Linear
Hi
I'm reaching out to the experts for advice, guidance & help please.
The Hermes Lite 2, "HL2", is a DDC/DUC SDR transceiver - http://www.hermeslite.com/ - which can output upto 5W PEP RF.
The RM
By
G8JCF
·
#125855
·
|
Re: Info QCX mini
Hi Francesco,
The green ”COLOUD" speaker that Steve links to is decent and very lightweight. It doesn't have great battery life though, at least my one doesn't.
The Anker Souncore mini is also
By
Ronan Cantwell
·
#125854
·
|
Re: QCX mini with straight key
No problems with a straight key on any of my QCX's. The only time I had a issue was when using a particular amplified Bluetooth speaker. Even though I was plugged into the line input, there was a
By
Ronan Cantwell
·
#125853
·
|
Re: QCX mini with straight key
I haven't heard of this issue before, but I have experience different audio anomalies with different headphones.? Sometimes it's just the impedance of the headphones, or the connector. I have trouble
By
Daniel Conklin
·
#125852
·
|
Re: QMX (1_00_020) SWR - Issue?
Thank you for your suggestion.
So I followed these 2 videos
* How to measure coax loss using a NanoVNA ( https://www.youtube.com/watch?v=OSw9Epu4nu0 )
* NANOVNA Return Loss vs VSWR (
By
IU1SWR
·
#125851
·
|
Re: 10w HF Linear PA current consumption does not change after installation
#10W_PA
Typical pot setting as the IRF transistors start to conduct (yours may vary, increase very slowly )
By
Bruce Akhurst
·
#125850
·
|
Re: QCX mini with straight key
I also take from this single poster, that no one else has had this experience? If so I can get around it by using a paddle, I can also try using a bug.
By
Joe AI5DD
·
#125849
·
|
Re: Another QMX+ got onto the air + Low Tx Output
I've now sorted the power problem on 6m. It appears that the inductors L519 & L520 are super sensitive to turns spacing, tweaking those improved the O/P power, but the main improvement came when I
By
Dave Cutts
·
#125848
·
|
Re: QCX mini with straight key
I'll make a video later when I get time.
By
Joe AI5DD
·
#125847
·
|
Re: QCX mini with straight key
Is it possible that is the sidetone sounding a little soft?? Maybe you could record a little of the sound and post it so we could get a better idea.
--
73, Dan - W2DLC
By
Daniel Conklin
·
#125846
·
|
Re: #qmx IQ Sweep ?
#qmx
Thanks for your explanation.
I'll buy you another coffee - hope you can get an iced coffee during the summer.
Chris
By
Chris KB1NLW
·
#125845
·
|
Re: QMX Carry Case
I am also a fan of the 1050 case.
Additionally, I have this 3D printed cover ( QMX cover and desk stand for hamradio POTA SOTA by F4EGX - ( https://www.thingiverse.com/thing:6599009 ) Thingiverse)?
By
Don Koehler
·
#125844
·
|
Re: QMX (1_00_020) SWR - Issue?
If this were me I would first completely calibrate the VNA for a bandwidth of 13.8 MHz to 14.5Mhz to zoom in on the 20m band, so that you can accurately read the Return Loss across this narrow
By
Dave VE3GSO
·
#125843
·
|
Re: Info QCX mini
I like this Anker speaker too.
Battery lasts very well, sounds good with QMX.
Also sounds good with music, with good Bluetooth range.
By
Rowan G0KLH
·
#125842
·
|
Re: #qmx IQ Sweep ?
#qmx
Hi Chris
Software.
I don't think they're flattened. It's a limitation of my ASCII art, I think
that's all. Everything on the terminal has to take place within the
constraints that there are 25 rows
By
Hans Summers
·
#125841
·
|
QMX (1_00_020) SWR - Issue?
My QMX was delivered the other day but I have not been having a very good
time with it so far. I am really hoping it is because I am just dumb!
It came shipped with the 1_00_019 firmware. I put 11.7v
By
IU1SWR
·
#125840
·
|
Re: #qmx IQ Sweep ?
#qmx
I just wonder why the peaks of the sine waves are flattened.? Is this a hardware or software saturation?
By
Chris KB1NLW
·
#125839
·
|
Re: #qmx #firmware 1_00_020 released: minor stuff and bug fixes
#qmx
#firmware
Hans,
Thanks for the CAT fixes! Works great now with DXLabs Commander!!
73,
Randy, KS4L
By
Randy
·
#125838
·
|
Re: QMX+ on Fire
Problem resolved! Happy again. There was a short on the 3.3V Buck converter, between D102 and Q107. D102 was soldered not precise on track and made contact with Q107. Had to replace the buck
By
Guido Giannini
·
#125837
·
|