Ted, I believe that the P3 connector pin 15 is the +12v supply to the Raduino 5volt regulator, from the mainboard. At least that is what I know from the Raduino on the uBITX. You get the 5volts from t

Ted, Can you provide the reference to the mod? 73 Evan AC9TU

Loris, You asked, "Why is the NANO module mounted upside down in the RADUINO ?" I do not know for sure, however, based on what I have found on the history, the original Raduino was for the BITX40 or 2

#v6 #nano #ubitxv6

Chuck, To answer your question, yes I have used a "CB" power mic with the uBITX, both v4 and v5 (In that area they are really the same). It does help with the power out, however as Gordon points out,

From the video, it looks like you have an Arduino installed. Do you know what software you have installed? I suspect that there is a setting that puts the rig into CW mode. If it is similar to the uBI

#bitx40help

I would agree that they may have just gotten tired, or more likely moved on to another project. I would have to admit that at times I get tired of answering the same questions over and over. If I had

I would agree with Dean, also from personal experience :-) 73 Evan AC9TU

One other option is to use a fuse with a reverse diode to blow the fuse. Since the diode is across the supply, the forward voltage would be the most that the rig would see.

John is correct. A better solution is to reverse the diode and connect the power to the rig to the NO side of the relay. The relay will pull in to energize the rig. The disadvantage is that the relay

Tom, Here is my 20meter CW TP1 on my v5. The output was measured as 7.8 watts. 73 Evan AC9TU

Grant, For some reason, I had issues when using the FT-817 radio interface. Not sure that it is the radio as maybe that when I changed, I reset the other parameters correctly. The other difference in

Since the AUDIO connector is still the same and not used, I believe that you can. You would have to modify the DIGITAL connector to tap off the PTT signal, or to move the encoder connection to go thro

Grover, you are correct, C72 and C78 locations were changed when the audio circuit was changed in the v5 upgrades, and further changes in v6 when the volume control was moved onto the main board. The

#v6

Muthu, Some things to verify before Reed responds: 1 Ensure that the board selected in the tools menu of the IDE is the Nano 2 Ensure that the processor is ATMega328P (Old Boot loader) in the tools me

There is another Groups.io for the Antuino: https://groups.io/g/Antuino/topics Still, there is not much activity on that group, though there has been some over the last month. As to your question on e

Todd, A good explanation that reflects my feelings as well. I am more than willing to help others learn and fix their rigs, and not just uBITX. The uBITX is not a commercially manufactured radio. It i

Tom, Congratulations on the award! As I am not near my uBITX so can not tell you normal position. If you have a way to measure output power I would adjust for 12 to 15 watts on 80 meters. 80 is normal

Tom, From these traces, I would be looking at the Q90 part of the driver. There should be more gain in that section of the rig. When you say that RV1 is at max, have you tried turning it in the opposi

Peter, Again, I am not in a location that I can measure my rigs to help with the actual measurements. What should happen is you should see a signal that is at the transmit frequency when transmitting

Peter, I would suspect that you have a ground loop between the scope and the uBITX. You are using high impeadance probes right? I use either the ground on the power connector, or the ground on the ant