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

Hi Peter, Luc, all I had a busy hour, QCX+ 20m with 50W PA kit about 40W, had 7 QSOs RW3KE/P, DL2NAI, IK5PWJ, PG4I, UA3TCQ, RK3DY, RN6HFZ, none of which were QCXs. Right after the party, I worked DD6D

Hi Luc, all Well there comes a point where the workload is evidently and undeniably so overwhelmingly enormous, and it is apparent that abstinence from QCX QSO parties would hardly even inflict a mino

Hi Tony I recommend updating the firmware. QRP Labs kit firmware were tested with QRP Labs GPS. If other GPS modules are used, the sentences are not necessarily the same; if the QCX receives a sentenc

Hi John Whatever smokes, it won't be that regulator :-D And remember, all Rev 2 boards have been through my super-duper test jig and passed its 21 tests. All 1,000 boards. Yes the test jig really did

#c38 #qcxmini #manual #mods #pcbversion

Hi John There is no need for the capacitor in Rev 2. No additional 10uF capacitor in Rev 2 (with the 78M05 regulator). I have not yet been able to update the manual. The only changes to the Rev 2 PCB

#c38 #qcxmini #manual #mods #pcbversion

A lot of paddle ops on air are hard to decode too... the biggest crime is insufficient inter-character gap. It is supposed to be 3 dit-lengths (and 7 dit-lengths for an inter-word gap). The inter-word

I squeeze too. I'd always been a straight key op and was scared of trying to use a paddle. But I had this nice Palm Radio pico paddle staring at me for several years, unused. Eventually just over a ye

Hi all This is high on my priorities list but I'm still in firefighting mode here, and I have not had a chance to get to it yet. 73 Hans G0UPL http://qrp-labs.com

#vfo

Hello all Just to clarify the position: I have always intended that everyone purchasing a QRP Labs kit should always be able to upgrade the firmware in their chip for free, if they have a suitable AVR