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Did anyone out there notice that FlexRadio is now copying QRP Labs? Not really, but their latest product (the Aurora series, announced right around Hamvention and scheduled to ship in 4Q25) is using

To be clear, I don't remember if the backlight actually did come on, as I didn't want to keep it connected to power any longer than I had to to check what the usb behaviour was (Up to that point the

Hi Stan To #1, the DC plug isn't shorting, and the tab you mentioned isn't contacting the small transistor next to it To #2, resistance of PWR_ON and PWR_HOLD to all other pins in that connector: With

Current limiting can only do so much; a semiconductor can be destroyed WAY faster than a power supply can limit current; besides whatever energy is in the circuit or in the power supply's storage

Functionally it will work fine for you to finish assembly and start testing.? Those capacitors affect only the bandpass filter and two low-pass filters. But check carefully first: things fit very

I had a 1% resistor sample kit whose resistors marked 10K were actually 1K.? I had some head scratching figuring out why the gains of my opamp circuits were all wrong. 73, Don N2VGU

Here are a few questions, observations, checks to do, and resources for you to look at: 1) First a couple of checks based on your photos (the resolution got stripped, so it is hard to tell whether

If you're a member, you should be able to look in the archives. Jack, W8TEE

I believe the excess wire is quite intentional, due to Hans' correct assumption that some will make mistakes and need a little more. Knowing I'd already wasted a foot or two of wire, I pre-cut lengths

Many thanks Stan for this infos. I will now tests with my qmx+ and fldigi.

Currently, when operating CW with fldigi and QMX+, if you set the fldigi CW modem set for CAT keying, fldigi uses the CAT 'KY' command to send the characters - it does not try to use PTT to turn the

I received my kit for a high-band QMX this Tuesday, and have been working off and on over the course of the week to assemble it. I've gotten to the point where it's fully assembled, and after several

I received my 20m-10m QMX kit and am currently assembling it. Unfortunately, the kit I received was missing the three 33pF and the 100pF capacitors (C401, C404, C521, C516). It will probably take a

Audio levels problem solved ! It was due to incorrect parameters in the AGC settings. I swear I did not do it....think these defaults came with v1.02 ? The AGC threshold was set to 15...should be 8.

You shouldn't have that much leftover wire if you know the inductance, the wire diameter, and the core material. Kits and Parts has a table that helps to estimate the length of wire needed

Drilling is not an acceptable rework method for boards with plated-thru holes.? This is a 6-layer board with internal layers you should never go any where near it with a drill bit lest you ruin the

I think that the assembly instructions should recommend this approach, I think folks are poorly-served by encouraging use of the burn-and-pray method, it just fails too often. Perhaps it works OK for

Hans explains it so well, I almost understand it.

I'd like a solder pot, but it will have to wait until I have a bigger workspace and that day may not come. My bench is so cramped that I think a pot of melted lead would be a rather dangerous thing to

Probably more likely different load impedances and/or latent failures due to electrostatic discharge or poorly-regulated or excessive supply voltages. 73, Don N2VGU