You’re very welcome! I run a 5” on my v3 ubitx. But going to upgrade it to a v5 that I have on my workbench. 73 Mark AJ6CU

#ubitx #v5

After messing around for several hours, I found a post mentioning a 5 inch nextion file made by AJ6CU. Downloaded that, uploaded with no issues and now I have all the screen populated by the image. Th

#ubitx #v5

I have recently purchased a ubitx kit (V5) bundle which included a 5 inch nextion display and appropriate case. I tried programming the nextion tonight and while the 5 inch nextion file seems to load

#ubitx #v5

Matt, Congratulations! 73 Evan AC9TU

#v3 #ubitx

Thanks, I got it calibrated, and as of this afternoon have made 3 QSOs to POTA stations on it. :) 73 de NM9O

#v3 #ubitx

Matt, Glad to hear you found the problem. Here is a link to a video by Ashhar Farhan on calibrating and setting the BFO. It is for the v6 as the instructions are using the v6 controls. The same basic

#v3 #ubitx

Evan, Thank you! You picked exactly what I had missed, the 4.7k resistor. Now I just need to get, or put together, a microphone, check out the KD8CEC firmware potentially, and get it aligned :) 73 de

#v3 #ubitx

On Thu, Jun 23, 2022 at 06:48 AM, Evan Hand wrote: Matt, First, a question: did you install the pull-up resistor for the KEYER line? https://www.hfsignals.com/index.php/ubitx-wire-up/ Once the uBitx g

#v3 #ubitx

I bought a ubitx v3 a few years ago, and also got the case. I got busy, and didn't actually get it put together until today. No real issues, until I powered it up, at first it said it was on LSB, but

#v3 #ubitx

Indra, The oscillations happen because there is a feedback. If they stop when you break at the LPF, then the feedback is coming from further back. 1. Try disconnecting the mixer side of the LPF, (add

#ubitx

Hello Farhan - Ok, I will put up the shield, and report the result. - Yes, the oscillation stop if predrv disconnected from the LPF. regards, INDRA

#ubitx

Indra, The low pass filter as well as the band pass filter must be shielded. Do the oscillations stop of you disconnect the lpf from the pa? - f

#ubitx

Indra, Thank you very much for the 45Mhz filter diagram. Good construction If you have the complete diagram of the other stages, I am also a taker (Others users also i think) to compare to compare you

#ubitx

Hello Gerard Sorry for the schematic. Here the schematic from LTSpice. Regards INDRA

#ubitx

Hello indra, Thanks for the schematic But it is on a black background, I find it difficult to read even when enlarging.(My old eyes LOL) You may try to put a black schematic on a white background, it

#ubitx

Looks like carrier leak from 11.059 (11.0555 BFO) oscillator mixer. Change BFO frequency and see what happens. Raj

#ubitx

Hello Gerard I resent the 45MHz picture, the last one in groups was not sharp. regards INDRA

#ubitx

Hello Farhan Thanks for suggestions to turn off each stage alternativelly. I did and note ( the power meter at output of PREDRV 2, no modulation in TX ) : - starting turn off mic amp, then turn off 11

#ubitx

Good morning, For information may you provide the complete schematic of your scratch. I am particularly interested in your 45MHZ filter If you could put in addition a schematic and picture of it thank

#ubitx

Indra, You are able to measure it at the predriver, it doesnt mean that the oscillatiins are starting there. The easier way to know that is by turning off the power supply to each stage. - f

#ubitx