Your BFO is in the middle of the passband. you will have to get into calibration menu (choose setup option and then BFO calibration) and then tune the bfo until it gets to a side of the filter skirt.

go by the one on the github - f

Not yet. in a different thread, i have posted some changes in component values, I am waiting for those to be confirmed before we ship. - f

Rob, we had to change the clock to 27 MHz (probably, i didnt edit the schematic properly) as the IF of Antuino is itself at 25 Mhz and the clock crystal would have created a spur right in the middle o

Josh, the non-linearity, is primarily due to the first IF amp (between the diode mixer and the crystal filter) running out of steam. Change the R18 to 51 ohms (or just solder a 100 ohms across the exi

The ringing could be due to a race around the bidirectional amplifiers when for a brief moment, both directions are powered during transition from rx to tx. - f

Unfortunately, I dont have a working ubitx in the shack these days. I pulled out my original build to make it go on 146 mhz. It is lying incomplete. - f

Not bad at all! What kind of audio amp did you use? We were at a farm yesterday and I carried a KX3 with a longnwire. It was hopeless. I couldn't get the vswr below 4 and the band was dead. No contact

I suspect (i havent checked) that this is because of inaccurate adc readings. Sometimes the adc takes repetitive readings to get it right. - f

Dan, Have you recalibrated the frequency as well? What frequency did you try the 100 ohms at? - f

You can recalibrate. Hold down the button when you switch it on, it falls into calibration menu..choose power calibration and let it do its work

Haha, Raj, He hasnt read our emails?

#ubitx

Which version of ubitx do you use?

#ubitx

Ill do it. Some stuff is taking up all my time for a couple of days more. I plan a fuller update of the website. - f

#v5

Hehe, sure. Which is why it sells a working ssb board for $59 dollars and keeps everything under GPL. I sincerely wish someone else takes up bitx40 production. There is no copyright over any aspect. I

It is a better idea to trim the dipole to low swr rather than tune it up. Also cheaper.

#ubitx #nextion

The backlight should come up anyway. Can you tell us how you are powering up? - f

From the layout of the front panel it appears to be optimised for left handers. I find that refreshing. Our radios are exclusively laid out for right handed people.

Sajeesh, A few of us are working offline to sort out some software bugs and production issues. It should be on sale very soon. - f

Mike, The procedure is documented on hfsignals.com. You hold down the tuning knob while switching on the unit, this puts it into calibration mode. Choose Frequency Calibration, and set the output (as