开云体育

Message with link to PDF document on Programming /g/BITX20/message/22618 ( /g/BITX20/message/22618 ) Try to get a blink example working first.? Do THIS FIRST.?

Right. I must have read something about the tuning pot. Sorry for the misdirection.

You are asking for help on something with a completely different subject? Here is a link to programming document. /g/BITX20/message/22618 ( /g/BITX20/message/22618

Visually the transformers look OK. That's why I ask whether anybody else has measured this before going any further.

I have to disagree there . I use a 12V/5V buck/boost converter in my BITX and in other builds of mine. As long as you follow sensible construction and wiring practices and layout, I have had no noise

Steve, please read Jerry's reply to the same question you posted in another thread: /g/BITX20/message/23228?p=Created,,,20,1,0,0 It explains pretty well how you can get it

Good luck.

Logarithmic for a volume control. ?Linear works, but the low end will be touchy to adjust. ?The response of human hearing to sound intensity is pretty much logarithmic. ?Just google "hearing

I think someone earlier said a linear taper port will work better. You could check the list.

I think I have everything I want/need to customize my radio, so I'm about ready to assemble it.? However, I am wondering, what would be a better volume potentiometer , a linear or logarithmic?? I

Ash hat Sorry to but it but I need some info Myself and others have received bitx40 with the blink programme in the Arduino Now I am a novice with this device and I have been told to just load

Hi Al, Thanks for your suggestion for further code improvement. I haven't yet tried this but I will certainly have a look at it. 73, Allard PE1NWL

The switching mode regulators are invariably noisy. that's the main reason to avoid them. MVS Sarma had a suggestion, we can remove the backlight LED out of the regulator and directly feed it with a

Awesome,and thru hole too! Pete ?WB9FLW

Your RF mixer might be defective, check that the two transformer windings are not shorting. -- f jgaffke@...> wrote:

Well, never been a question for me anyways. ?Other's have asked if a sine wave VFO might be better. ?I'm convinced a square wave into the diodes is ideal. ?You could make a case for a sine wave

The image from the 4'th VFO harmonic, transmit or receive, can be cured by running the VFO at 19mhz, not 5 mhz. ?(We've discussed receive images from this fourth harmonic previously, hadn't occurred

Is it possible to incorporate Jack W8TEE's idea in message /g/BITX20/topic/new_raduino_source_file/4422545 ( /g/BITX20/topic/new_raduino_source_file/4422545 ) to

I am using a BITX40 with Raduino. The only changes have been around the mic amp and getting rid of the tuning noises. This is related to the rx birdie just below 7.2MHz, which annoys me but I can live

Grab the sketch that Allard posted here: ?/g/BITX20/message/23214 ( /g/BITX20/message/23214 ) You will also need the newest etherkit Si5351 library: