开云体育

Sorry. Did it again. Did not read the title.

I could only find link to complete kit, is their a link to just the parts ie: main board as it comes in a kir ? I did send an email a couple of weeks back to hfsignals but have heard nothing back...

This is a BITX40 board!

Make sure you adjust the pot that controls the backlight for the lcd. It goes from nothing to filling the screen. Careful adjustment is required to see anything. Also check that the raduino isnt

The 7805 regulator is not supplying power to the Raduino. When you plug in the USB connector, power is being supplied by the regulator on the nano board using power from the USB port.

I'm late to the disussion, but I'd load the Blink program to make sure the Nano is healthy, too. Jack, W8TEE

I would start with the simple and then go to more complex.? Verify that you have the Raduino board plugged in correctly. I noted on my board that the socket on the Mac n board looks like the last pin

The 47uF would be charging via the 10K resistor and that would take a second or two. Probably the cap was a little leaky. Just a guess!

Hi Alf, It is entirely possible for the vibration from the speaker to rattle the microphonic parts on the board. Remove the speaker from that equation by using an external speaker at some distance.

Chuck I am sitting here on the side but this has happened before. 1. The uBitx as it comes from factory,? (you may have a Bitx40 you are not specific) is supposed to be biased correctly and the bias

Ok Peter, the same thing happens to me but in my Bitx40. When I gently touch the pcb and the components near the AF ic with a stick, I hear the friction on the loudspeaker as a result of microphony.

I just finished the build and I power it on and Have power to everything except the Display? Nothing.... did I miss a wire? If I plug in to the mini usb it powers up..... any Ideas?

Chuck A new board can be ordered from hfsignals.com I am mystified by the finals, I wonder if you have a shorted pot or just too much current. I suggest getting it working in stock form before any

What a trip! Got my kit a few months back and even before I stared the build I came across KD8CEC mods and followed that until I had that done, built my case installed (may have buggered something at

I came up with this mod after testing my uBITX on the bench to determine how much signal it could handle before distorting at the speaker due to clipping of the audio signal.? What I found is that RF

Here is the link to Rich Neeses screens https://www.mediafire.com/folder/mmu6ua683lk93/Nextion-Screen-1097 -- N5KBP

Ian's 2.8 screen is actually his 2.5 recompiled for 2.8 not resized. The only way to get a full width on a 2.8 is to use another screen resized correctly. I use Rich Neeses 3.5 myself. Here is a post

Gave it a try same results 1900uv estimated at tp2 to get to .1p-p 9000uv estimated at tp1 to get .1p-p? (I think I reported my signal generator's input in my message last time and mentioned uv when

That's brilliant will have to give that a try, thanks!

Loop several turns of wire thru T2... connect to scope ...Will cause less mismatch than hanging extra cruft on TP-1 Jim