开云体育

I suppose the ideal might be to use exactly the right iron on each joint, but hardly seems worth the trouble. It is a good idea to have two irons if you happen to have two hands, makes it easy to

Sorry, it being the QMX+ enclosure and gps. -- Phill EA5JHA

Hmmm, no excuses! Scope set to x10 and it looks like I've managed to switch the probe to x1 before testing. Thank you both so much for the help, greatly appreciated. Still no output so moving on to

Hi Don, I will try with hot glue(as Ivica suggested), it seems somewhat the best compromise for having the toroids not bending (I don't anticipate any extreme abuse) and if needed I could still think

Quick questions for those in the know . . . QDX Rev 4 - 9V build, 9V power supply. Can the 5V power supply/rail safely sink another 31ma? I think there's room in the QDX for a small, DC 5V, 25mm

Thanks for the follow-up Nate. I believe I agree with you about the QRPGuys meter - especially on 30M AND 60m. I reran TX tests today with my Elecraft DL1 dummy load and measured via DMM using: -- a

Don't forget to document the part shortage, so that you do not forget later and wonder why 160 meters doesn't work...... 73, Don N2VGU

It is likely that to obtain optimum results you may need to use a different tip, temperature or both for the grounded end of some components.? I do rework/prototyping for my clients and I will often

The only tougher colors to match are shades of white, metallics are a nightmare as well. (Former body/paint shop worker). Brady make P-Touch tapes in white-on-clear, which looks surprisingly good when

PROGRESS! FB GREG KI4NVX

Looking good. I started and finished building my QMX+ yesterday. The torroid winding is always a daunting task for me but I completed this one in record time. May all your magic smoke stay contained

One data point. I have one of those 30v 10a CVCC bench power supplies from Amazon similar to this: https://www.amazon.com/LW-K3010D-Adjustable-Switching-Regulated-Spectrophotometer/dp/B07512KQDW It's

Completed 2.5/2.6/2.7

Lasse, This is the time to use Google for capacitor identification information. Print out every one that you find and keep handy. You will need it if you continue with this hobby. Then step #2……

I would not make any blanket statements about wall warts vs any other form factor, it's what's inside that counts.? We used thousands of fairly inexpensive wall warts at work some 20 yrs ago with

Oops, sorry Lasse, Jerry's right, it's the 68 that's missing, not a 680. But still, you can carry on with the other bands. To Jerry's point, it is important that you get the right type of capacitor

Here's a couple different web pages describing how capacitors get marked these days. https://www.electronics-tutorials.ws/capacitor/cap_5.html

Hi Bruce, Thats good to know . So after 12hr with this battery mod, I assume? the clock would come up instantly, but the info might be dated until it finishes a refresh cycle at some point? Honestly,

It was sampling at 50K samples/s(k shouldn't have been small caps?), vs 1G samples/s. Unless it is a sampling scope...you won't see what's happening. Phil, did you calibrate the probe and use it at

Thank you very much everyone for the useful information :-) Not an expert in electronics, just think it's fun to build things yourself. Found a box on ebay with lots of different capacitors, so I'll