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Interestingly, I did the audio gain change (removing the cap that's between pin 1 and 8 on the lm386) and didn't like how the audio sounded on my speaker. When I put the cap back in, suddenly the

If I were to advise a new ham with just a voltmeter, I'd tell him he needs to learn to walk before he can run, and that if he wants to get into home brewing he should start with something less

Hi bitxers, Some have said they hear a click or perhaps a chirping on keying ptt, my bitx40 is no exception. When the ptt is pressed, the relay Rly1 is activated first, the +12tx line is enabling

Got it John. and that is why my second post immediately. ?regards ?sarma vu3zmv

He speaks of the LCD that came with the Radiuno. It was broken and replaced. As far as I know, none of the lcds come with the contrast pot mounted on the lcd itself. I am sure there are some

Yes It is the same pot., Jack. all the best sarma vu3zmv

I generally manage with a 1K resistor or a single 1N4148 diode , with cathode facing ground. So far it has been working well for me. I do use model JHD162 modules. econjack@...>

Most have a square pot on the back of the display. Not so with yours? Jack, W8TEE To: [email protected] Sent: Saturday, February 4, 2017 8:16 PM Subject: [BITX20] adjusting the contrast on the

The four push buttons are used to control the frequency and its increment. One button allows you to move the cursor above the field that you wish to change. When you get it above the field that you

Only one of the groups.io out of 6 I belong to show the UPLOAD button. 73 Ken jgaffke@...> wrote:

A few weeks ago I uploaded LTSpice plots and schematics for other bands, 80m 60m and 20m. I finally got some time to build the 20m BPF. Even though the plot was good, the BPF did not work. I double

Seems the upload stopped around the latest Groups.IO update. Oh well. 73 Ken jgaffke@...> wrote:

Have been several folks complaining of not being able to upload files. ?Searching for "upload" in these messages, appears the problem started on Feb 1 somewhere between posts 21263 and 21280. ? Good

Yes, This really should be mounted on the other side of the board for cases like this. It would require a slightly different pattern, but it could be done as is. Ash? It shouldn't take much

I am trying to upload to the group files, but no UPLOAD button. 73 Ken VA3ABN

I had to replace the LCD that came with the radio.? The new LCD has its contrast set too high.? Does anyone know how to change this?? Is it the blue and white pot next to the arduino?

The stm-2 board with the modified Adafruit drivers are much faster. Here is a Youtube video showing the difference. https://www.youtube.com/watch?v=5mDnKBNl9sY After I get a couple of projects

Very much on topic for me, thanks! ?So getting sent to ACS is to be expected. ?Guess I'd better go check that mailbox. In my case, the final 4 zip digits may be a bit superfluous. ?A county of

Rob Found it in my reference book. Thanks Art Sent from my iPhone

Gidday Randy Attached the circuit here. ?Audio not so scratchy and more mellow. Ugly construction is very fiddly but it works. ?Take the red lead off the volume pot and attach AUDIO IN. Attach