toggle quoted message
Show quoted text
On Mar 23, 2025, at 3:08?PM, Jason via groups.io <ltanhonorsmiter@...> wrote:
? It looks like a Phoenix Transmatch?
?
?https://qrper.com/2022/03/richard-recommends-the-qrp-pocket-transmatch/
|
Re: QMX+ / USB / CAT / Windows 7
On Wed, Mar 19, 2025 at 12:43 AM, Alan G4ZFQ wrote:
Magic sauce indeed, Alan ... thanks very much for the pointer ... worked perfectly.
?
- Bruce K1FFX
?
|
Hi Joel,
I was using my 44' doublet with 300 ribbon feed, Elecraft balun, and the ATU is from Kanga, the Pocket Transmatch.
?
?
73
Roger MW0IDX
|
hi, just setting up my new and very handy GoBox, a beauty case by UGREEN, approx. L22 x W14 x H8 cm, with hand strap and carabiner hook.?
Equipment inside is the QMX, a talentcell powerbank, noname speaker and the tiny paddle by .
Only some coax , an 8m-pole with transport length only 70cm and the have to go in an extra little package to fit into my bicycle trailer? ;-))
?
?
inside look :
?
?
?
the case:
?
?
?
hopefully the spring / summer comes soon so i can get into our park or forest for /p operation.
?
vy 73 and hope to meet you OTA?
Udo DF4BJ /qrp
|
Pierre,?
? ? ?The BPF sweep problem on 20M on High band QDXs has been there for most people, and L12 changes to fix it haven't been established that I've seen. Doesn't seem to be much you can do about it, but make sure the audio level on that band is appropriate in WJST-X..and seems to still work pretty well on 20M for me.?
?
As far as power output, the middle set of toroids is for 15/17m... And I've found those to be a tradeoff...messing with them to increase power on 15m may mean a slight decrease on 17m.?
If you study the QDX manual and schematic, you can see which toroids affect which bands. There are 3 sets of LPFs, and they are assigned to different bands in the terminal application.?
?
-Nate
N8BTR
|
It looks like a Phoenix Transmatch?
?
?https://qrper.com/2022/03/richard-recommends-the-qrp-pocket-transmatch/
|
Re: Using the QMX+ with an auto-tuner
Just use the Tune SWR feature.? It (by default) uses 1/4 power, which is low enough that even very high SWR won't cause damage.? And SWR protection is automatically disabled in this mode.
|
newest go-box with QMX, Talentcell powerbank, noname speaker and tiny paddle by N6ARA, completly fits in a beauty case by UGREEN.... only a portable 8m pole (70cm packed) and some coax as extra package? ;)
|
Re: shorted PA on TX, dead SMPSU?
Ludwig
?
Thanks for your coment, with sub-boards removed, I have 6.6k ohm gnd to Vcc and 2.3k ohm gnd to Vdd.
?
Do you think this indicates something broken on the main board?
?
Dan
?
|
Re: Using the QMX+ with an auto-tuner
Perhaps, ill-advisedly, I turn off my SWR protection long enough to tune, then turn it back on.
--
73 Michael N6QP
Up in Thin R
|
Using Retevis HK-008 speaker microphone with QMX for SSB
Hi all, while I am eagerly awaiting the stable release of the SSB update (not brave enough for the beta) I am trying to figure the microphone situation.
?
I am absolute newbie both in amateur radio and all the electrical stuff, including wiring and soldering. So naturally I was looking for video tutorials on YouTube.
?
Will this contraption work for QMX?
?
https://youtu.be/Ih6scBu1Mko?si=Jts6MUJGJWOhiz_6
?
I keep reading that everything made for the trusdx should do, but that's primarily for the microphone. How about the speaker?
?
If I follow this tutorial 100% will I be ok both in terms of audio and microphone?
?
Thank you :)
|
Re: CW Practice / Rag Chew
we can just see Ed 14.058.5, on the 7300 scope and copy is 55n from OR. ?can't hear any others.
?
|
Using the QMX+ with an auto-tuner
I am using my new QMX+ with the HardRock-50+ (HR-50+) amplifier with its
integrated ATU.
?
The ATU requires a bit of RF energy to trigger the tuning procedure.? So, one
pushes the Tune button on the amplifier and then you key the QMX+.? When
tuning begins, the amplifier takes itself off-line and QMX+ is then driving
the ATU directly.? So, at that point, the QMX+ could (and probably will) encounter
a mismatch, its SWR checker goes into action, and the QMX+ is taken off-line.
I was able to confirm this by putting a watt meter between the QMX+ and the
amplifier.
?
Parenthetically, this would also be the case with a manual tuner.
?
So (and risking that this has been covered already a dozen times), how does one
tune an antenna without triggering SWR protection in the QMX+?
?
Thanks, all!
?
- Bruce K1FFX
?
|
it worked but now a new bug where I don't know where to look. QMX+ is selected in WSJTX input and the PC and decoding is ok but no transmit and when I try to transmit I get? a rig control error.
---------------------------
WSJT-X
---------------------------
Rig Control Error
---------------------------
Do you want to reconfigure the radio interface?
---------------------------
OK ? Retry ? Cancel ? Configurations... ? Show Details... ??
---------------------------
Hamlib error: 0000 ? ?49 46 30 30 30 32 38 30 37 34 30 30 30 20 20 20 ? ? IF00028074000 ??
0010 ? ?20 20 2b 30 30 30 30 30 30 30 30 30 30 36 30 30 ? ? ? +0000000000600
0020 ? ?30 30 30 30 20 3b ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 0000 ; ? ? ? ? ?
ic10_cmd_trim: incoming data_len is '37'
ic10_cmd_trim: data['36'] is ' '
ic10_cmd_trim: For i='37' data_len is now '36'
ic10_cmd_trim: finished loop.. i='36' data_len='36' data[i-1]='0'
?1:rig.c(2563):rig_passband_normal entered
rig_passband_normal: filter not found...return 0
?1:rig.c(2591):rig_passband_normal returning(0)?
rig.c(2314) trace
ic10_set_mode: unsupported mode PKTUSB
rig_set_mode: targetable retcode after set_mode(PKTUSB)=-1
Invalid parameter
0:rig_set_mode: elapsed=33ms
0:rig.c(2369):rig_set_mode returning(-1) Invalid parameter
Invalid parameter
Invalid parameter
?while setting current VFO mode
Timestamp: 2025-03-23T19:49:28.835Z
---------------------------
PC is Win 11
?
any ideas ?
?
PS my Flex 1500 works for WSJT-X and I could toggle between the rigs before
And the QMX+ works in CW
--
Martin
DK3UW
|
Hi Roger, Looks like a nice setup. I am wondering what tuner you are using in the photo?
toggle quoted message
Show quoted text
On Mar 21, 2025, at 12:06?PM, Roger Dallimore via groups.io <mw0idx@...> wrote:
? Last night I downloaded the latest firmware and threw together a rather basic microphone, and after going the the calibration tests it appeared to be working well into my main station transceiver. This afternoon I went to my local SOTA summit and was very pleased how well the QMX on SSB worked. Although I'm mostly a CW op its great to have another another mode available in such a small radio, ideal for SOTA.? ?
?
Thank you Hans for all your hard work on this project, I enjoy building and learning about your radios just as much as I do operating them.
?
73
Roger MW0IDX
?
|
Re: QMX+ Transmitting on 10m but no receive
Okay I think it was my antenna, I haven't even weirder problem now. As soon as I start transmitting after around 3 seconds, the whole qmx just turns off
There is plenty of 10m activity on FT8 right now, at least where I am.? Check your audio card settings.
Stan KC7XE
|
Re: shorted PA on TX, dead SMPSU?
Chris, first half of tests was done with smpsu boards removed from main board.?
?
Second part, pressing the power switch, was re-assembled.
|
Re: CW Practice / Rag Chew
My antenna system is rather compromised at the moment, so I'm not sure whether I will be heard, but I will try!
?
Thanks for organizing these, Ed.
?
Greg,
N1TR?
|
I finally had enough with the ESD upsets when touching the knobs.? On the last occasion I lost my memory settings due to to a reset.? ?Today I worked out a solution.? I cut a piece of copper foil and punched holes in it to fit under the encoder nuts and around the push buttons and microphone.? ?I insulated around the circuit board areas with black electrical tape on the edges.? ?I would have used Kapton tape but do not have any in my supplies.? ?I originally tried grounding the foil by soldering to the BNC connector but realized that it would block the encoder board from passing through the display board opening.? I soldered a wire from the foil to the power input ground.? ?Put on my fleece jacket, rubbed it round on the chair and touched the knobs a bunch of times.? No upsets.? ?It wouldbe a good design upgrade to put a surface ground layer on the encoder board that the mounting nuts can make contact with and include a path to system ground.
?
Brien - KE7WB??
?
?
?
?
|
Re: shorted PA on TX, dead SMPSU?
Dan,
?
never ever run a QMX with SMPS boards if the off line tests are not ok!!!
(on PCB#2)
12v goes 0v to 5.2v
Vdd goes 0v to 0.1v
It looks like a short at VDD (or a faulty PCB#2).
Please remove all subboards and check resistance at the mainboard VDD-GND and VCC-GND. Both should be some kOhm. If only a few Ohm one or more element(s) connected to this voltage rail is broken (or the rail is shorted by a solder whisker or so).
?
If resistance is not ok, you have to search for the broken element, not so easy.
?
If resistance is ok you have to repair both SMPS boards or use spare parts from QRP Labs.
?
If all is ok you need for start at least 200 mA, use 250 mA limitation @ 6.5 V.
?
73 Ludwig
|
Roger Dallimore
Udo Die?elberg DF4BJ
Jason
Michael N6QP
Ken Cone
Brien - KE7WB