A 50-ohm load is nice for matching cables etc... but... if you load a Si5351A output pin with 50 ohms you'll reduce the amplitude considerably to around half (around 1.6V pk-pk). It also seems to slow

Hi Bill Only Jacobs coffee. That's my Starbucks thermos-mug, we bought two when we left Tokyo Japan in 2016, to remember our happy daily visits to one of our many neighbourhood Starbucks (here my near

Hi Syd A squarewave is made up of an infinite series of sinewave components, of which the odd-harmonics are the main contributors. If you look at a 100MHz squarewave using a 200MHz 'scope, the reason

Hi Syd Unless you have a very expensive set of properly set up and operated lab equipment, you can't view anything looking like a nice squarewave on a 'scope at 100MHz or even at 30MHz. I suspect most

Hi Luc Here are a couple of pictures taken just now... Unfortunately they don't disprove anything, you'd need a "before" photo for comparison :-) Remember, it is where I spend all day (and many nights

Hi Jody Thanks for the nice feedback and yes, the test jig is seeing plenty of action these days, now into its second 1000-batch ( https://youtu.be/xb_ZmPx7Py4 ). Have fun! I managed to get a rare bit

Hi Terry "Collecting" is normal for a few days, because the packages must be carried 250km by road via various FedEx/TNT agents to get from my QTH to the nearest TNT depot which is in the city of Izmi

I already did, and I also sent Terry a new replacement board yesterday, to cover the ahem, err, obviously totally unlikely scenario where TNT don't find the original shipment... For the sake of effici

Note that for QCX-mini and latest revision QCX+, +5V is on the tip of the PTT connector not the ring. Hot-plugging (plugging in connectors while the QCX is switched on) risks damage to a first revisio

Hi Mel As your question relates to your specific order I will check it and reply to you off-list. 73 Hans G0UPL http://qrp-labs.com

Hi Robert The QLG2 isn't in yet. The board assembly is complete and the only thing I'm now for waiting now is the assembly of the 2m coax and SMA connectors that are attached to the active 1575MHz ant

Hi Tim The assembly fee includes installation of the TCXO and Enclosure options if ordered at the same time. Testing, adjustment and calibration is done with the TCXO installed. The unit is then insta

Hi Mel Please order it at http://shop.qrp-labs.com/qcxminia Note that the waiting time is estimated 10 weeks. 73 Hans G0UPL http://qrp-labs.com

Hi Jim The new batch of QCX-mini PCBs cleared customs yesterday and will be here in 2-3 days. There are also some other needed parts in the same shipment. Shipments are a bit slower than normal at the

Hi Ilsur Thanks for the nice QSO! I have just now registered on eQSL and confirmed our QSO. I see I have a lot of eQSLs assigned to me and will have to go through them all! Until now, I am a paper-log

Hi all I was not able to attend the 1300Z session but I did spend an enjoyable hour at 1900Z having 9 back-to-back QSOs on 40m with my QCX and 50W PA, despite rather high noise levels here. Stations w

If you want a fancy screen and user interface the best way is, design that separately and connect to the QCX/+/mini using CAT. All the QCX functions are available via CAT. So theoretically it should b

Hi Halden SiLabs engineers confirmed somewhere on their forum that although the datasheet says the reference crystal should be 25 MHz OR 27 MHz, in fact anywhere in the range 25-27 MHz os what they re

#synth

Thanks Alan Lots of good info there. One point though - reconfiguring QLG2 output sentences is NOT required to work with QRP Labs products. The QLG2 will work with any QRP Labs products in the last 6

Hi Tom Yes, sort of... Certain NMEA sentences got renamed. For example the most important sentence is $GPRMC which contains date, time, location and fix status. Really, "GP" stands for "GPS", the US s