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Re: Automatic Antenna Tuner, Internal Battery with a charger and built-in speaker for QMX+. Open Source.
On Sat, Nov 16, 2024 at 11:05 AM, <me@...> wrote: Sardar, Are those 2mm traces 1oz (.035mm) or 2oz thick (.070mm) copper? I'm planning to take Stan's advice and see if I can rewire all the high
By Cal (AD8Q) · #133672 ·
Re: Is it bricked? #dummy #firmware #problem #QMXplus #troubleshoot
Jim, did you try this? You could switch on your QMX+ the normal way. This means the controller is running (at least handle signal PWR_HOLD). The question is which software is running, boot loader or
By @Ludwig_DH8WN · #133671 ·
Re: Got my new rig, totally in love.
Almost exactly the same thing for me ! Got it 2 weeks ago just after my ham licence, I fried a powerboats but once fixed I also crossed the ocean first try (the other way :p ). Amazing what such a
By Antoine (F4LVL) · #133670 ·
Re: Rotary encoder ... an inside look!
Interesting Mike.... They are definitely not optical. Thanks for sharing. 73 -Mike
By Mike - N5AQM · #133669 ·
Re: QMX Mid band - Audio is garbage #qmx #audio #build #cw
I finally got time to run the tests. Audio filter sweep looks like this on all bands: RF Filter Sweep just hangs the terminal and radio before showing the graph. Cold reboot required on the radio.
By Pedro · #133668 ·
Re: Error in 5V SMPS diagnostics
When I set the input voltage to my QMX+ at 7.2V, like you have yours, I don't get a fault. It shows that my duty max is 77%, but duty cycle is only 65%. So yours is 'working harder', up to the max, to
By Stan Dye · #133667 ·
Rotary encoder ... an inside look!
I mangled a rotary encoder during the recent build of my QMX (mentioned in another thread). I accidentally broke one of the tab leads off at the base by manipulating it too much. That was really the
By Mike N4JX · #133666 ·
Re: QMX poor signal reception, possibly PCM1804 chip issue?
Update: Thanks Ivika and Dirk for the additional tips. That chipquick looks very nice, I am going to get some of that one day. For the time being, I don't have it, and no extra flux either for that
By Bafoh · #133664 ·
Re: Error in 5V SMPS diagnostics
Chris, both SMPS are running at the limit (Duty cycle = Duty max). It maybe a result from using linear regulators with a tiny bit lower voltage than expected by the QMX. An SMPS running at the limit
By @Ludwig_DH8WN · #133663 ·
Re: QCU Shack Clock
12 hours is fine. ?The GPS technical information that¡¯s being cached is going to have expired after that.
By Bruce Akhurst · #133662 ·
Re: QCU Shack Clock
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By Edward Reynolds · #133661 ·
Newly QDX - First Checks - Question about Power Out
Good Afternoon Folks Just put my new LB QDX? on the air after finishing up assembly and 1st bench checkouts late yesterday. This morning I ran some benchtop frequency checks with my Leo Bodnar dual
By Greg McCain · #133660 ·
Re: Automatic Antenna Tuner, Internal Battery with a charger and built-in speaker for QMX+. Open Source.
They should be fine, just make sure that the load and DMM are floating.? Those regulators measure and regulate current on the negative leg, so anything shunting that will affect the current
By Donald S Brant Jr · #133659 ·
Re: QCU Shack Clock
Ed! Found a stamp! In the mailbox on the way (no routing number). -- 73 Karl KI4ZUQ
By Karl · #133658 ·
Re: Automatic Antenna Tuner, Internal Battery with a charger and built-in speaker for QMX+. Open Source.
Cal, This is what I do too after creating with your help the low power version of the firmware. I am glad you and Dirk find the mod usable and probably useful. Let¡¯s test it more. As we discover
By Sardar (AC8L) · #133657 ·
Re: Got my new rig, totally in love.
Hear here! This little radio is fabulous. I'm constantly amazed at its performance, and I'm using only CW. I'm sure people using the other modes are also amazed. THANKS again Hans!? ...can't say it
By N4REE - Bob · #133656 ·
Re: Automatic Antenna Tuner, Internal Battery with a charger and built-in speaker for QMX+. Open Source.
Dirk, You can use vertical expansion on your slicer to adjust the cap hight. It will match other caps hight. -- 73, Sardar (AC8L, 4K6SA, VA3DUA).
By Sardar (AC8L) · #133655 ·
Re: Error in 5V SMPS diagnostics
Not that, it's the same with no LCD installed.? My guess is something to do with the power up process.
By Chris, G5CTH · #133654 ·
Re: Automatic Antenna Tuner, Internal Battery with a charger and built-in speaker for QMX+. Open Source.
Sorry for the non-technical input. Just want to show how it looks with the button cap :-) I'll do some more testing, as soon as the new batteries arrived.
By Dirk · #133653 ·
Re: QMX+: How to "fix" vertical toroids to the pcb
If you are concerned about coil (or other heavy component) movement, you could stake them with a few dabs of "neutral-curing" silicone adhesive, like this one:
By Donald S Brant Jr · #133652 ·