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Maybe you should start an exclusive sub-group for owners of QCXs in home-made wooden cases. Call it a splinter group? Good work Brady, I wish I had your skill. John G4EDX QCX30 Nottingham, England

Hi Bill See http://www.qrp-labs.com/synth/si5351ademo.html 73 Hans G0UPL http://qrp-labs.com

I need some help with my QCX20 ver. 3.?It originally worked, receiving well but only 1.75 watts output.?I measured 5.1 watts at the drain on all BS170’s?I then reworked L1, L2 and L3 removing a

I am able to test with qcx.

Does anyone have or is anyone able to help me write a simple arduino sketch to turn on the QRP Labs Si5351A Synthesiser Module, PCB Rev 4? I just want to turn on clk0 for a period so I can test

Very nice indeed!

Hear hear! These guys are the best of the best. One of the big ingredients in being that good is the ability to copy CW by ear in adverse conditions far better than any machine or software can. They

*Found the problem. The 7805 regulator is flaky replace it and and I have transmit. Thank you guys for your input. low power prevented flash. Carl Thanks for your time and ideas. lAB1ZI *

Hay there James Yes the U3s works fine up to the start of transmitting then reboots Yes I can go through all the menus and set the correct info Yes different power supply same results Home made PSU

No sorry, these guys KNOW CW, and can copy it better than ANY computer program.? Especially in conditions with QRM. PERIOD! Joe WB9SBD Sig The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com

I had a look at the WRTC2018 competition and tried to work some of the HQ. Got 25 of them despite the pile ups. There was a video about the competition site showing the operation in a tent of one

The first U3 I built years ago I seem to remember having a similar problem. I was using a very small phone charger I seem to remember which caused all sorts of problems. Swapped it out with a linear

Before you flash the U3 did you check what Roger suggested. Is the U3 working fine before transmitting? Can you go through the menus etc.. Have you tried a different PSU. What PSU are you using first.

Dam it James, I think you hit it on the head. No I didn't flash the arduino. What a Dumass I am.I will do the arduino? and try it again. Some one smack me up side the head. I'll let you know. Carl

One of the first construction projects from the ARRL Handbook was a 30ft tilt over mast made from 2 X 4s! Al – K8AXW Sent: Sunday, July 15, 2018 7:26 AM To: [email protected] Subject: Re: [QRPLabs]

That's a good call Roger.

Hello Carl. Have you tried a reboot of your PC after installing the libusb.dll. Also, are you selecting the arduino from the Avrdudess drop down menu. I'm assuming that you have flashed the arduino

Are you sure that your power supply is sufficiently robust? I had a similar problem with my u3s; changing the power supply fixed the problem. You might try putting a 4700uF cap across the power and

I am looking for help installing firmware on my U3s. I am using Arduino IDE as the ISP. Also using Avrdudess. I had a hard time getting the libusb0.dll installed but now have it in the two windows

Steve, Changing QCX CW OFFSET has no effect on the filter center frequency or bandwidth. Brady, Assuming you bypassed the onboard filter (discussed above) there is no reason QRP Guys filter will not