The threshold for duty charges into the US is about $800. Unless you are buying 8 or 9 of these at one time, there will be no duty.

Answered by Hans in earlier messahe

40m band 3dB bandwidth: 514kHz Insertion loss: 1.97dB at 7.020MHz centre Tuning range: 6.04MHz to 8.36MHz

#40m

I am using the Elecraft T1. . It is small quick and matches most anything albeit not the lowest price. Simple one button tune.

I would give it some more time before I start digging into things. The bands are very strange recently. Try mid day for best 20M prop.

I have been using this on all my QRP-Labs kits with no issues. This plus the GUI of averdudess is simple and quick. https://www.ebay.com/p/1958430590

The change you made via the front panel simply set a number for the transmission stream to send that indicates the power that your U3S is transmitting. You should set that number to be as close to the

The answers to Alan's questions should enable us to help.

Hans has been extremely generous in allowing a few legitimate QCX owners to program blank chips after damaging their original MCU. In my opinion this is above and beyond what any other company would d

Download the QCX+ manual and start on page 121. Make sure start time is an even #.

Remember it is not the number of loops it is the number of times the winding passes through the core.

#t1 #40m #pics #manual

1st thing I would try is a reset.

#display

When I posted the MTM Survivor link, I misunderstood your intentions. I use that as a protective case for the QRP-Labs enclosure not as a case for the bare board. I highly recommend the QRP-Labs enclo

#case #enclosure #qcx

Once again performance you will not see from many other companies. Great Job Hans.

Don't rush. Inventory and label all the parts and put them in bins ( cupcake tins work great) The little extra time it takes to double check each part before soldering is 10X less than trying to find

You generally have plenty of wire for the torroids especially T1. Leave the leads about 1.5" long and it will make it easier to install in the board.

Nice job on the attenuator. Enjoy the allure of WSPR. It is miles per watt and not miles that count.

#u3s

If you run WSPR pwr levels, you should not need a cool down period.

#u3s #wspr

This does the same thing with easier jumpers to install.

#u3s

From Schem.

#u3s