He is still in the group and appears here from time to time. Arv K7HKL _._

Apparently you did not read the HFSignals web site where it says that this group is the support mechanism. Farhan does monitor this group and provides his assistance when needed. Arv K7HKL

Chuck The VOL-High side of the volume control is probably not the culprit unless the volume potentiometer hot side has become shorted to ground. Temporarily shorting this to ground would probably not

Sam Confused here. You said you do not have an oscope, so what is it that is making weird lines? If injecting audio at the mixer output did not produce audio at the regular output then you have probab

I will try to help. Since I have not been following your specific thread, can you bring me up to speed. The topic indicates you are using a V5 uBITX. What have you tried thus far? Did it ever work? If

Sam Difficult to troubleshoot remotely without more information, but if there is no local oscillator signal into the BFO mixer there would be no audio output from that stage. You might connect your ex

On-line information can read by using features of the computer to magnify text and image size. If available, a large screen TV usually can be connected to your computer to show things in larger format

A detector probe or oscilloscope should show where power differs from one band to another. Voltage measurements should show relative differences. That could provide some clue as to where to start trou

#ubitx #ubitx-help

Ian As much wire in the air as is physically possible is a good approach, as long as one has many acres of open space to work with. Loop antennas are effective enough for those of us with HOA restrict

Antenna measurements are for the most part relative to some measured reference signal between the antenna being tested and the remote reception point. Antenna at the remote reception point would seem

Bob KE6BGN Could you provide us with the email address that you sent your complaint to? That might help with determining what went wrong. How many times did you request help from that email site? Was

Jack Since your loop is small it could be rotated and a remote receiver and antenna used to derive a signal strength pattern. This could be automated if you use a stepper motor rotator and automated l

Ken, and others John and myself have discussed this off-net. Turns out that I may have miss-interpreted his post. He is well qualified and experienced. He just posted some thoughts that probably we ha

John and myself have discussed this off-net.

Don KM4UDX Thanks for the kind words. At my ancient age some things come about from errors and experience. Arv K7HKL _._

John The day is long gone when we used large ceramic wafer rotary switches, 1/4 inch phone jacks, 5 inch skirted phenolic knobs, and 500 volt power supplies. It is easy to look at the diminutive size

Loop efficiency is dependent on size versus frequency. There are many articles on-line that discuss this. https://www.robkalmeijer.nl/techniek/electronica/radiotechniek/hambladen/qst/1986/06/page33/ h

In addition to the contrast control (Pin-3 on the LCD) you can add a resistor in series with power to the backlight diode. Resistor value can be determined by trying different values until it is right

Mike While the BITX is not built in modular fashon, you can test it as if it were modules. From the volume potentiometer to speaker can be regarded as a module, and tested by inserting a <=1V audio si

https://www.arduino.cc/en/Guide/HomePage _._