开云体育

Hello everyone! I'm THRILLED to report that my QDX is back up and running after being QRT for 16 days! ?Replacing the 4 BS170 MOSFETs and the IC5 driver fixed it! What have I learned or done this

Dave, this is a QCX Mini that Tim built. All the resistors are already installed SMD units and the main board is tested at the factory before shipping so it's much less likely to be the issue. What

The biggest issue you are facing is that with a kit almost anything could be wrong. Excessive gain suggests the wrong resistors were put in the feedback loop on an OPAmp, so grab a magnifying glass,

Hi Tim. If the volume pot is basically full volume at any setting it usually means the ground end of the volume control pot isn’t grounded. Check solder joint on the pot and on the 2X4 pin header on

I seem to have killed my QCX+ receiver. It still receives but very very low sensitivity. I may have overloaded the front end here in the shack by keying another radio nearby or it got damaged

Hi folks, I'm a relatively new amateur and this is my first build: a 40m QCX-mini. When we tried to do the adjustment and alignment, the gain only had to be turned up to maybe 1 on a scale of 1-10 to

Try changing the double click duration. Mine was to short to work.

Still looking for some help with this one, According to the OpMan v1.08/1.09 the backlight can be temporary controlled by Double Clicking the rotary encoder shaft button (page 33 section 7.11) On the

Finally completed my U3S kit and ready to put it online. Modified the design for two antennas: VHF (2m independent on the main board) and HF (10, 20, 40, 80 and 160m on the relay switched LPF board).

I did get the software that Bruce, K1FFX, produce and is available here: /g/QRPLabs/message/93506 It does work much better than my hack.? I did find that the Armbian OS for my Orange

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