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hi Raj! I forgot to add that I had R136 at max setting at C132 i only got around 190mVp-p, Q13 B is 4.06V, C is 12.93V and E is 3.35V? so that confirms I have low signal at C132 (It should be 1Vpp

First check R141 if the value is more than 10 Ohms change it. Many boards report failed R141. At 13.2V DV and 150mV 1Khz audio injection I get C132 = 1 V p-p Q13b = 0.6 Q13c = 12V Preset centered

Hello fellow hams! ? My bitx40 have low output -only about 2 Watts on a dummy load Originally it has only 1W and the receive is OK I had checked and rechecked the TX section (Q13-Q15) All bias

Sorry, M1 and M2 are the other way around. Grounding K2.1 shorts the output of the pre-amp Q16 to earth on transmit, leaving the feed to the volume control and U 1 open-circuit (and probably picking

Can someone try grounding pin 1 of K2? That will take the input of the LM386 to ground when the PTT is pressed. Now pin 1 of K2 appears to be floating in the schematic I have. I've been working on a

Ciao Gian, No worries about the LM386. It still works well. I have spares in the junk box if needed. I was experimenting trying to discover other methods, and thought I would give what I described a

Correction: Nano has 15 pin positions per side

That's not your fault. Starting with Rel 1.8 of the compiler, they tightened up the expression parser to catch more errors that before. Also, the mcufriend library inherits a lot of its functionality

I compile stuff all the time without an Arduino connected. Make sure you're clicking on the compile/verify icon in the IDE (checkmark in the upper left corner). ? -- John - WA2FZW

Most Nanos come with the pins installed or you need to solder the pins into the Nano Nano has 30 pins per side and sometimes the six pin header pin is included. Use the below to search for like

You can always compile a source file without actually having a board physically attached. You can do a "compile only" (no upload) by clicking on the check mark icon below the File menu option.

The idea of a "sketch directory" is okay if you're just trying things out, but if you are working on a "serious project", I think it's a good idea to have it off the root directory with a directory

A piece of ballpoint-pen spring ought to cure that - form it to a 'hairpin'? I'm an inveterate user of 'what's lying around' - -or in the rubbish. :) 73, Dex

Because you never downloaded it, I guess. They are two separate files dealing with two related, albeit different, elements of the program. Good coding style dictates that dissimilar objects be kept in

"Where in God's name does Ardunio hide the sketches?" The compilations (including the hex file) are in C:\[user]\AppData\Local\Temp\ It is usually in a sub-directory with a long list of numbers.

Just good practice, I have also done this to the Raduino power feed. Ted

Excellent, Larry. If one gets a new Nano, install it with male and female removable headers. It makes things a whole lot easier, and does not effect operation to any great extent. The headers are

Hi Ted I don't know why you found the need to filter that supply. I derived mine from the V+ end of R101 (adjacent to the DDS connector) and had no troubles. Mind you, I had also 'super-cap' filtered

"but since nothing works at all anymore it seems you have blown the processor and it must be replaced." That's a pretty good idea, Jerry. I have done that with the TQFN package. The only problem is

I'm using what used to be an old icom desk mic. The element was replaced with the one that comes with the BitX. The button moves really easy into the lock position, too easy! 99% of the time I