开云体育

Desolder all but one terminal completely. Then heat the last soldered terminal while pressing the part to the board with your finger. As the solder melts, you can position the part with your finger

OK, change in question: I managed to get the components soldered...but sure enough, the audio jacks are neither of them quite flat to the board. :-( What's my best strategy for rework? Desolder them

I've got to the point where I'm trying to install the rear-panel connectors on my QMX+, and here is where my novice status as a solderer shows the most: Just how much heat and time is "a lot".

Just built my Rev 4 QDX HB (12V) after it has sat in the box for a couple years or more. Am doing initial testing. My RF filter sweeps look pretty good for all bands except 20m... there is actually a

Good to know! Thanks! 73, Paul -- AI7JR -- Paul -- AI7JR

Dear Tisha AA4HA There is a bubble wrapped envelope on the way to you first class mail with two 180 pf capacitors. I had two different styles so I sent you one of each.?? I think this will solve you

K indicates +/-10% tolerance. J indicates +/-5% tolerance . Nudging the turns on L404 one way or another should accommodate any variations in the cap value. However since you have already measured

Hans, Alas I’m off to Budapest and Rome for October. But I’d be happy to arrange something later or earlier next year. I wonder if I could tempt Jan and Alan as well. 73s Steve

My new QMX+ kit arrived in Virginia today, only 7 days after the 'shipped' notice from QRP Labs. Amazing considering that includes a weekend. Checked the contents and everything is there BUT .. The

I would definitely be interested, however I have as yet renewed my passport, I could plan for next year with the XYL. I would love to explore those ruins.

Here's the proper link to the USB cable that I use between my QMX and PC. Amazon.com: Digirig Shielded Short USB-A to USB-C Cable with Ferrites : Electronics (

Hans, why must you tempt us, so?! :-D Sadly, I think I'd need a lot more lead time to plan a trip like that from Minnesota! But that doesn't mean I didn't at least peek at flights... /m

Oh man! I wish I could. I’ve traveled a lot of Turkey but not your region. Always beautiful country and great food. Ken/NO4D Wishing and Daydreaming ?

Hi all We would like to see if there is interest in arranging a workshop here in Dalyan, Turkey. Location is 25km from Dalaman international airport (about 25 minutes' drive) with direct low-cost

I am not a power supply expert, but from what I have seen, the efficiency seems to be more related to load current, with a broad peak and a shallow falloff, and fairly insensitive to input/output

3. Flux which has not been overheated and burned will come off much easier, too.

If he built for 9V and ran from a "13.8" V supply, would that affect conversion efficiency? In general, how do changes in input voltage affect the efficiency of a typical buck/boost supply? (Thanks

https://jlcpcb.com/3d-printing?from=Jesse -- 73, Barb, WB2CBA

Another option is to try your library. Most these days have one if not several 3d printers. Usually incredibly cheap too. It's been a while since I checked but last I saw, ours was a few cents a gram

Thanks for the toothpick suggestion to clear the lint, I used a Q-Tip with Isopropyl alcohol yesterday working on my QMX build and found a lot of that.