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Re: OoT-RADIO HIFI TAMAGUCHI
You need to be careful, it's probably not legal to train an LLM on copyrighted books.
By Joey · #145924 ·
Re: QMX 1n4007 diodes
Thanks Hans. The hole diameter is good to know. I used my old dial micrometer, which is calibrated in inches, to measure a diode from the kit and then did a bad mental conversion to metric. Still,
By mux_folder2001 · #145923 ·
My 20M band QCX+
After a few days of work I completed my new QRP-Labs Xcvr after having built several years ago a Hi Band QDX. It was a real pleasure, no surprise due to an excellent manual and the adjustement and
By Pierre - FK8IH · #145922 ·
Re: New QMX+ Calibration victim
Hi Stan, Thanks, You were right. Lifting input legs of IC503 cleaned up the output from IC501/502. So new order to Mouser... :-) Regards, Jonas Den ons 21 maj 2025 kl 01:36 skrev Stan Dye via
By Jonas Sanamon · #145921 ·
Re: QMX 1n4007 diodes
Hi Tony I just measured one of the 1N4007 diodes from the kits, the wire diameter is 0.4mm. According to the PCB CAD program (I just checked) the footprint for these diodes specifies a 0.8mm drill
By Hans Summers · #145920 ·
QRP Labs kit shipping status
Hi all Well I got back to Dayton and after some work to release my suitcases full of electronics, which were impounded by customs at our local airport, all is well. I have a large backlog of sleep and
By Hans Summers · #145919 ·
Re: 50 Watt Power Amplifier - Low Power, High Harmonics #50w #50wpa
Probably time to work progressively through the amplifier path starting at the input and a hopefully clean input signal
By Bruce Akhurst · #145918 ·
Re: 50 Watt Power Amplifier - Low Power, High Harmonics #50w #50wpa
Hi Bill, Groups.io deletes photos posted directly into the post after a given time, which I believe is 30 days.? I save all of the original posts in my email archive to get around the deletion.? I
By Evan Hand · #145917 ·
Re: QMX+: low RX sensitifity @ 6m / 22 dB noise floor / 1500 Hz wistle
Hello Ken, I am also skeptical about my cure and therefore I made several measurements to find sources of noise and constant tones of my QMX+. In post #144992 I show the Lo signal @6m with strong
By Michael · #145916 ·
Re: Tune SWR on QMX+ always shows SWR <1.05
Cool! I was hoping there was a cat command like that - I suppose the most difficult thing would be for the esp32 to "host"/manage the serial connection, but it should be possible :) > > > >
By SA6ZGM Arne · #145915 ·
Re: Audio level request
I think I understand what you are saying, and the need for an audio change - but I think the words you used are not quite accurate. Adjusting the USB level for WSJT-x doesn't (or shouldn't) affect the
By Stan Dye · #145914 ·
Re: New QMX - observations and best QSO
You need a 12V USBC-PD 'trigger' cable with 5.5/2.1 connector, such as this one: https://www.amazon.com/2-Pack-JacobsParts-Type-C-Trigger-Connector/dp/B08NRM6X2Y/ There are similar cables for 9V if
By Stan Dye · #145913 ·
Re: New QMX - observations and best QSO
Congratulations! Which power pack did you buy. I found an INIU 10000 mah power pack with 12 volts out on Amazon, but it only has a usb-c output. I don¡¯t understand how it can be hooked up to a QMX.
By Joe · #145912 ·
Re: Introducing QMX CARROT
It's the small QMX for 60 to 15 meters. The case and accessories aren't available from QRP Labs (yet ... just kidding). 73 Chris
By Chris · #145911 ·
50 Watt Power Amplifier - Low Power, High Harmonics #50w #50wpa
Hello. I'm assembling a 50 watt power amplifier for use with a QCX+ that I assembled last month, for the 80 metre band. I have very high harmonics at the output of T3 - as a result, I get only about
By wtshyman@... · #145910 ·
Re: Mini Microphones for QMX SSB
When you click reply, if you select "Sender" instead of "Group" below my name, it will send just a private email to me instead of to the whole group. Unless you want to tell everyone you want to order
By Erik Larson · #145909 ·
Re: Audio level request
I am with you Ken..do not want to select Digi mode via the rotary encoder intentionally or unintentionally whilst switching modes.
By Rick Hill · #145908 ·
Re: Pop! Oops, blew a BS170 in my QMX, my fault. Lesson learned
Thanks all for the feedback! I received the BS170¡¯s from Digikey today and made quick work of replacing the blown one. I thought I would replace just the one and test the results. Luckily everything
By KF0OUH · #145907 ·
Re: Why no AGC for digital modes, as other modes?
Could have AGC (or just some crude clipping) on data to the DAC for the QMX headphone jack Jerry
By Jerry Gaffke · #145906 ·
Re: Digikey order
Texas Instruments often skips the "74" in front of the chip name, so 74ACT08 is actually what you need to look for...
By Ahand59 · #145905 ·