I would recommend adding a 10ohm resistor between that just for protection/current limiting on the input to the AGC's amplifier. HOWEVER yes that seems to be the fix for most of the issues we have

I just connected the V pad from the AGC to TP21 in between Q74 and R70 and it seems to be working. The level is constant at this point, and does not vary with the volume pot....

That’s what I thought. The point between V high and r70 should be constant, and not vary with the volume pot.....but when I put my oscope on that point he audio level is varying when I adjust the

The only thing I can think of is that the varying impedance is causing it to allow more current to the AGC circuit. The fix we have been suggesting for the V4 might help here. If you have an ~10ohm

Greetings all again :), I have my V5 running and installed the Kit Projects AGC. It seems to be working for both fast and slow, and I have the S meter running on the Nextion display. One thing is

Never Mind, was having some problems with x loader, but it worked. S meter working now.

To add to that, David is the one who currently assembles them, He uses a re-flow station AND a stencil. I did 2 prototypes by hand and they worked no problem!, but I also have Apparently good eyes and

The changes made by the screen change the nano memory ?? The frequency displays correct and changes with the encoder, but that is almost the extent of what the screen seems to change. Have reloaded

Hello, I'm looking at rebuilding the PA section, but before I do I would like to check to see how much power is going into the PA. To be more literal: On transmit, how much power is going through the

Changes to cw speed and others a changed via the uBitx manager and or using them menu when pressing the encoder knob, but no setting can be set using the screen, I can access all the screens etc. but

I can, but still no change anywhere is accepted when press ent or other key for acceptance of change made, I suspect the nextion may be bad ... thanks

all kinds of things may be in play -- a. being conservative in 'specs' aka typical values b. a different arrangement of the relays to get lower harmonic leakage c. an added 45 MHz LC filter to reduce

Hi Chuck, Some items in the menu require additional hardware. Can you populate the cw info in the cw menu?

Hi all, just need some input to verify my problem suspicions (chinese clone screen) or not . I am not sure how all this works completely so there could well be something else amiss. Below is what I

Hi Rick, I’m having the exact same problem and have made the same mistake as you (loaded the -s version). When you reloaded the correct firmware did you just reload it with xloader? thanks, joel

Correction: I meant IRF-510 and for the heatsink, I meant an old Pentium III Slot 1 type (still sold new for cheap on ebay and they have relatively quiet fans usually). Cheers and 73, Mark.

Yeah, it makes firmware tweaks super-easy, plus I plan on doing a lot of FT8. Since these pics, I've found that some laptops - but not all - can cause noise on the USB line that gets into the uBITX.

Hadn't thought about bringing the USB outside of the case, great idea.

Hmm, I don't know what would be unsafe about running the finals at higher voltage. That is how most IRF510 amps are run. Keep to the voltage below 28v and I think they would be pretty durable.

Nice to see that there are a few active on Sundays. I will try again around 0 hours UTC on Sunday. Hope to catch you then! Jay WS4JM