Thanks Hans, got all 4 of mine updated. Nice to have them back on track again. Now, to get the ones I gave to friends for Christmas back long enough to upgrade them to c1.03c too. Jim, W0EB

Many thanks Hans.Both clocks updated to c.1.03c without any problems! -- 73, Rick VE7TK

Hi all Since nobody mentioned anything on the previously proposed 2nd Monday of the month... my revised proposal this month was 3rd Monday. Which is tomorrow 17th! There is still no mention on the QRP

Hi Guido and John, Based on the 8108 app note, I wound my air core

Hi Guido Nice job on the reverse engineering. Opera was added to the list of modes supported by the Ultimate3/3S in October 2014 http://qrp-labs.com/ultimate3/u3s firmware version 3.06. At that time

Very unlikely, it is probably the last thing that will break in your QCX. If broken, the display would not show any text. But.. due to some short, IC11 can become very hot sometimes switching off due

Hi Steve! Hope you are doing well. Yes, that looks absolute wonderful. It would be nice to make a stack of PCB with embedded LPF coils as shown. Suprised to see how compact these coils are. Is this

Hello Andy, Sunday, February 16, 2020 I don't run OPERA as such on MF RX, but OP8RX from the Russian ham, here is the bit of the log showing you: 2020-02-15 03:25:16 SV8CS 478514.94 2464 km

Thanks John. This is quite promising, will have a look into this filter design. Wondering if there is any minimum separation needed for the coils, or can they be clubbed together as close a

Could there also be a fault with IC11? On first power up when I discovered the event the display went full bright. I thought that odd, so I readjusted R47 thinking I might have bumped it getting the

Pin 14 on IC2 should be 5V at receive. You can measure this from the bottom of the PCB, but you can also temporary remove the LCD and measure it from the top of the PCB if you like.

Hi Guido, I have a 5 watt class E TX board which has the coil etched into the PCB. Designed by Dave NM0S. Here is a picture Best regards Steve G0XAR

Guido Sounds like a good test. I'm not that expert on the board. Which pads do I test? Not sure how to identify the RX line on the board. Thanks much. Brian N N7BKV

Thanks for the ideas. Q6 looks easy enough to get out. Will give it a try. Brian N7BKV

Hi Serge This issue has been resolved, see my message posted just now. 73 Hans G0UPL http://qrp-labs.com

Hi all I have released a minor upgrade to the clock kit ( http://qrp-labs.com/clockn ) firmware. Version c1.03c can be downloaded from here:

Thank you.  Looks very promising. -- Brent DeWitt, AB1LF Milford, MA

Not puzzled. But wondering about reliabity I think. Buy a second amp, build it for backup. If your amp fails again, you're covered. $29.

As Hans very well describes there is the risk of false decodes due to the matching against a list of known stations and the weak protection of the message integrity. At the time when Opera came out,

Might take a look at this. I built one for my KX3 before the PX3 was available. Worked well. http://www.arrl.org/files/file/QST/This%20Month%20in%20QST/April%202014/Ewing.pdf