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My apologies, in my last post I said? "BS150" when the correct part is "BS170". a BIG Thank You to all who responded with diagrams, diode part numbers, etc....! I have the required diodes in my

I would just dab a bit of liquid rosin on them and touch them with a soldering iron and maybe the slightest tap of molten solder on each one. They will wick the solder down in to the connector via

Hey I recently built the 40M QCX-mini, and followed the instructions to a T(1). I took my time with the winding, was very neat and tidy, and I get 4.6 Watts out (13.6V), measured on a QRP Guys QRP

Check the voltage at C406, should be about 2.5v (other end is at ground). -mike/w1mt

Found no Q103/104 short

Dear members, I found some on line and ordered them.?? They should be here soon.?? I will have extras when they get here so if anyone else needs a SMD 0805 47uH inductor please let me know.?? I

Dear Chuck, I needed the surface mount part.... I found them on line and am waiting for delivery of 200... I think there will be an offer from me to get rid of some them here soon.? Thanks for

Hi Mike, unfortunately Factory Reset did not change things at all. If I receive signal on my main rig at S7 or higher I can hear station on QMX, however if it is S3-4 there is no signal on

Yes. Ideally remove the existing solder (solder sucker?) and then fill those holes all the way down to the pins on the physical connector. 73, Willie N1JBJ

I was inspecting my board set before beginning assembly. This is my USB-C connector. I can see there is a little bit of solder in just about every hole, but should I be touching these up? Seems a

Hi, what I think it would further improve the functionality is: - an AGC ( fast or medium one) for the CW?reception (already mentioned elsewhere), - if?the volume control would followed a

Hi Kees Remember also that we do test the USB connection of all boards here before shipping. The recommendation to add a bit more solder is more about long life. Since it doesn't intuitively look

Got it.? Thanks.? Wasn't aware the inputs worked like that.

After my QDX's finals bit the dust due to the remote ATU doing a re-tune cycle during transmit, I added some simple VSWR protection devices like shown. These devices are just something I had in my

Hans, I posted this screenshot back in March, no-one has responded with their own close-in spectrum. The picture shows the effect of removing the PPS. I did try at least two ways of powering the

From formula X = (14,050500 X 27,004,000) / 14,052,400 = 27,000,349 (Freq displayed / Frequency measured) = (X / Current Reference Frequency setting) If the result is that you are even further away

Hi Glenn. I've built and/or repaired several of the 40 meter QCX variants and have not seen one take more or less than the prescribed number of turns on the large winding of T1. You should be fine

No stress Hans, 100% understood re your todo list ? 73

Oops, never mind, I can't read.? Didn't notice that there are both SMD and axial 47uH ones. -- Cheers, Chuck

While working on my intended LPFs I've also looked briefly at an LPF for 80m & 60m. A quick linear simulation using QUCS shows that close to 20dB attenuation at 7MHz might be possible for 0.6dB