Yes... I still like this design. Which I saw in RadCom magazine by the way - not my design, only my implementation. It's an L-match and basically similar to all the auto-tuners that have a set of rela

Hi Daimon You won't find an enclosure matching this one perfectly, because this is custom-manufactured to my specifications. However, it uses a standard aluminium extrusion. To design and produce your

I will incorporate one into every QCX+ and QCX-mini starting from the next manufacturing batch. For the QCX-mini we will commission the manufacture of a special smaller version of these magnificent fu

Sorry - I meant to write: "any order that has Bank Transfer payment method and incoming payment NEVER arrives, will just be ignored by me anyway, by default". Apologies for the confusion...

Hi Don You already emailed me privately about this yesterday and I already answered. I have seen your new inquiry and I have answered, and pasted my previous reply. Please check your spam folder to se

Hi all From my own knowledge of the WSPR encoding in QCX I think the probability of a bug is extremely low. The code for QCX WSPR encoding is the same as in the Ultimate3S. I wrote it in 2012 and have

Hi Mont I don't have spare parts of the switches or button caps. 73 Hans G0UPL http://qrp-labs.com

Hi You cannot use the QCX+ to transmit and receive Hellschreiber or JS8Call. You can use the Ultimate3S for Hellschreiber - standalone, without a PC - so it is a Hellshreiber beacon. Not realtime QSO-

#qsx #mods

Hi Phil FedEx/TNT shipping for 0-500g (which would include QCX-mini + enclosure) is $11.99. I have never heard of any US customer ever paying any taxes or import customs. 73 Hans G0UPL http://qrp-labs

Hello Alan My understanding is that the hashtable is only used for the type 2 and type 3 WSPR transmissions, which are "extended" type transmissions, for callsigns with prefixes or for transmitting 6-

Hi Ron, Tony That is indeed a mystery. Ron, you are correct about 6-char grid squares in the extended WSPR transmission format - but the QCX is not capable of transmitting this extended format. It can

Hello Gerry The 20MHz crystal is not calibrated during the regular GPS calibration at the end of each WSPR transmission. Only the real time clock (RTC) is set. It is not necessary to calibrate the 20M

Hi all Lots of good SMD soldering equipment advice in this thread. But some reassurance for some of you who don't have all this stuff. Never fear! It's still possible. I'm proof of that. I don't have

Hi Paul Don is referring to a Rev 2 PCB, with the 78M05 voltage regulator; D33, C21 and C22 were moved slightly to make space for the bigger regulator, and the manual has not yet been updated for Rev

#20m

Hi Don I'm sorry, I have been so busy so far, I have not had a chance to update the manual... Yes, please follow the markings on the board. D33, C21 and C22 were all moved slightly to make room for th

#20m

Hi all Another reminder, just in case it helps anyone: when replacing an Si5351A chip please be sure to purchase Si5351A-B-GT or Si5351A-B-GTR (Matt's appears to be correct). Do not be tempted to buy

Thanks William, Jim Good luck with the builds! All the batch 2 boards have been through my test jig (YouTube video filming still pending), and passed 21 tests with results all within the defined range

Hello All There were some problems with the shop website PCI Compliance and I was therefore forced to upgrade the shop to OpenCart 3.0.3.6 as the shop software was on a quite old version. In the upgra

Hi William The PCB already *IS* double sided and is a professional quality FR4 PCB with through-hole plating, solder mask, silkscreen, the works. The Si5351A you buy locally will I assume, be the same

Hi Jim I use my QCXs at 15wpm and they always work perfectly. I'm using the latest firmware 1.07a. I had 9 QSOs today on 20m in the 1300Z session of the QCX QSO party and a few minutes after the hour