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Thanks Dave - that's the reassurance that I needed. I still have some hardware debug to do, I'll post what I find. 73, Steve - NU7B

Hi Willie: For the uncorrected pressure I'm also getting zeros, so this seems to be a communication issue. In looking over what Adafruit offers, I noticed that their module using the MPRLS sensor, has

Hi, In the QCX+ Manual110.pdf, please see the pages 99 to 101. Some ways to do the connection of the GPS to the QCX+ are mentioned. 73 Bojan S53DZ

Hi, I would say the procedure for the blown MOSFET is the same for a short circuit as it is for an open circuit fault. Since they are coupled in parallel it is impossible to tell in-circuit. So,

Can anyone fill me in on the method/location/hardware needed to physically connect the GPS to the QCX+. Thanks, Al

That will do it. Good job Sam. wrote:

CAT commands on the QCX share some data lines with the LCD. During CAT command execution some visual artifacts can occur. It’s not necessarily “expected” behavior, but I think that’s the

Hi Steve Here is a section of U4B basic that reads i2c on an external temp sensor? and the battery voltage under load that works fine Dave VE3KCL BAT OUT 7 1? ? ? ? ? ? ? ? ? ? ? ? ?

OK so it would appear R100 (130k ohm) was OC. Have briged pin 15 to Q100 with a 150kOhm (it's all I had) and back light is shining bright. Proper 5v on pin15 and 0v on pin 16. All the? way its mean

Hi Sam. I think your idea of faulty Q100 could be correct. To make sure first, though, please measure the voltage on the gate of Q100 while switching the backlight mode on and off in the menu. You

Yes. Using a balun seems to get rid of a lot of noise in many circumstances, as well as solving rf in the shack type issues that make rigs to odd things. Deffo worth using a balun. -- - 73 de Andy -

QCX MINI working fine but have no back-light. This didn't concern me at first power up as I knew it was configurable in the menu.? However having dome some digging I'm a little concerned. LCD pin 15

Sharing a couple of “doh!” moments that have dramatically improved my RX experience with the QDX today. No great insights deserving a Nobel prize but just in case others are facing similar issues.

Thanks, Colin, I guess you really do get what you pay for. I tried calibrating the offset on the Amazon ones, but then realized I needed (at least) gain and offset for each sensor, so I just threw in

sorry Hans Abi I retried again 630m doesn't work with??QDX v1_08b When I do a transmit test, QDX becomes unresponsive I think we would also have to consider the possibility of *other than* operator

Hi, I finally replaced the red LED supplied by Hans by an orange bought from our local shop. My cheap Chinese tester shows Uf 1.87V for the red and 1.91V for the orange. So, the difference is smaller

Hi Willie, So far, the Adafruit one from Digi-Key has been the best for me.?1528-1592-ND All the Amazon ones have been 5 to 7 degrees off. -- Colin - K6JTH http://tangokeys.com

Edit : the 40mini is v1.09a, the 20+ is v1.07a

Hello, I have 2 qcx, one is a 40mini the other is a 20+. Both show the same behavior: When controlled via CAT, the battery icon sporadically shows a dead battery... The expected voltage is around

n 29/01/2023 10:31, Mike wrote: Mike Quite a few people who seem sensible are talking of using the QDX with FST4W. Taken to the extreme "FST4W-1800 has a FSK tone spacing of 0.089 Hz and does not