Re: Qmx not startup.
This means you have a strong short on your VCC (5V) supply.? Something has failed internally.? If you are lucky, it is just a component on the SMPS board.? Some potential shorts happen due to the
By
Stan Dye
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#136849
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Re: QMX POTA Support...
On Thu, Jan 9, 2025 at 10:02 AM, Len wrote:
Most? know of that hike the AT go for minimum weight
as basic supplies food, and, water, and shelter take precedence.
SOTA, IOTA, you have to carry in
By
ajparent1/kb1gmx
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#136848
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Re: Qmx+ 3D printed case
Holiday season and family time slowed things a bit but i was able to finish speaker enclosure to acomaccompanie the main case for my qmx+. Amplifier module is TDA2030 and speaker is from old Compaq
By
Ivica - YU1QRP
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#136847
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Re: New silicone enclosure feet
Hi John, all
QRP Labs shipping has always been charged at - as close as I am able to
estimate - actual cost.
FedEx shipping for 1 gram is the same as for 500 grams. It goes in 0.5kg
increments. Note
By
Hans Summers
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#136846
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Re: New QMX+ build not powering up/accepting new firmware
Do you have a DMM or other method of measuring the Voltage and Current from your battery?
The voltage and current before you press power-on, while you are pressing it, and after you release it are
By
Stan Dye
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#136845
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Re: QMX POTA Support...
3x18650 cell pack. I use 3200mAH ones.
homebuilt 40-10m doublet antenna fed with 300 ohm line
something like the EMTECH ZM-2 QRP tuner
By
Larry VE7EA
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#136844
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Re: Ultimate 3S reciever question
Now,? does one need 2 of the 6 band relays to be able to switch bpf and lpfs together? or can only one or the other be controlled in operation?
--
regards,
Bryan, N0LUF
By
Bryan Curl
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#136843
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Re: QMX POTA Support...
Go to YouTube. Search on ham radio sota. Spend hours watching. Lots of good stuff
Ed
AB8DF
By
Ed Kwik
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#136842
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Re: Ultimate 3S reciever question
Should work fine Bryan.? I have been very impressed by the receive module.? I am currently using it with no front end filtering for receiving wspr and FT8 with no problems. I am using an auduino
By
Ian Gray
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#136841
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Re: Ultimate 3S reciever question
Ian,
Thanks.? I run several qrss receivers here, so I'm familiar with how it's done in basic terms. I was planning on letting the U3S do its TX thing and use the receiver into wsjt-x for wspr decode,
By
Bryan Curl
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#136840
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Re: Dead Radio Repair by W1NC-- A Detailed Expert Case Study
I'm in awe, we all owe Jeff W1NC big time.
Without him to back up our debug efforts, buying a QMX would be much riskier
Reading how he went about this is instructive.
Here's some other debug notes
By
Jerry Gaffke
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#136839
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QMX POTA Support...
Firstly...apologies to all for such a newbie question, but I only just ordered a QMX and am just now learning CW :)
I was hoping to put together a rig for POTA while doing AT section hikes and was
By
Len
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#136838
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Re: These cursed little pwr supply boards...QMX
Thanks Karl--and others-- who replied...I will check the wiki.
I have played around with a lot of the qrp labs stuff...its great quality and never an issue. Just a bad run of luck lately is all.
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Scott VY1CO
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#136837
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Re: New silicone enclosure feet
Good Point. I forgot about that. Can’t just put it in an envelope.
John
Sent: Thursday, January 9, 2025 11:28 AM
To: [email protected]
Subject: Re: [QRPLabs] New silicone enclosure
By
John Saari
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#136836
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Re: Ultimate 3S reciever question
Hi Bryan,
The U3S is a stand alone transmitter only in that it does not need a computer to generate the wspr signals.? However to receive and decode wspr signals you will need a separate receiver,
By
Ian Gray
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#136835
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Re: question 50 watts amp
Hello, Hans,
I am using the 50W QCX PA with my QMX+ quite successfully. It works fine.
There are some things that I am strictly sticking with when using this combination.
1. I am using a +5V PTT so I
By
Bojan Naglic
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#136834
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Re: Best QMX AGC settings?
Hi Hans,
No, I did not try the other settings.
I have read over the descriptions of what they do, and
not knowing the architecture, I can't relate the settings
to the problem I am seeing.
I'm an
By
Chuck Harris
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#136833
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Dead Radio Repair by W1NC-- A Detailed Expert Case Study
To follow up on a post praising Jeff Moore's (W1NC) revival of my dead QMX+, I wanted to share, with his permission, part of Jeff's email to me detailing the steps he took to convert my electronic
By
Bill Jobes
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#136832
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Re: New silicone enclosure feet
I mean, Turkey to Georgia (state, not country) is pretty far. I don't think they do Forever Stamps over there...
By
Michael N6MST
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#136831
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Re: Best QMX AGC settings?
QMX Manual G4EDG Ron Other K7VIQ KL7MJ W5NR WA3UQV W2DLC Threshold 8 4 7 7 8 4 7 12 8 Slope 80 50 95 60 80 80 60 80 65 Noise 10 0 5 5 10 10 5 10 9 Hang 80 2 50 30 80 30 30 80 55 Smooth 50 0 99 50 50
By
Petr Ourednik
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#136830
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