开云体育

Could this be why my audio amp squeels when I turn the preset pot more than 1/16th up from off?

Oh, There's not much to do wrong, it's all up to the software!? But this program always seems to agree with the Elsie program by Tonne Software, so I think it's OK.? The values I am taking are from

Here is my posting from last year The wire up drawing has an error regarding the volume control connections. It shows the orange wire as being Vol_high. And the yellow wire as being Vol_mid, going to

Mark, That gives me confidence in how you are simulating these LPF's. Could be that the 80m LPF really does have a corner at 7mhz. Or could be that the boards are not being built exactly as described

That clever person could been me. I see that the latest drawing is still wrong, This error has a long history. Philip G7JUR

You folks might not have access to the flash drive on my chromebook. Here's a better place to look for the v5 uBitx schematic: https://github.com/afarhan/ubitx_v5/blob/master/ubitx_v5.pdf Jerry

Hi Jerry, Thank you for the information on the code.? Here is a simulation of the 750nH filter: It looks like a good filter for 30m and 40m.? Input impedance showed 50 ohms on 30m and 40 ohms on

I use omnirig with com3 to communicate with WSJTx but I cannot get Hamlib to connect -- John Faivre?WA9SGD

Hi, I haven't had any luck on 160 meters so far due to a compromised antenna. But rest assured that I am using and external low pass filter that starts to rolloff a little above 2 MHz. The filters

Mark, Interesting. You might be right that the filter with the 900nH inductors has an incorrectly implemented corner frequency. Worth exploring further. Your simulation shows a corner at around 7mhz,

SOLVED I just saw a post by a clever person who discovered a wiring error in the wiring diagram. I am using one of those universal case kits by inkits with the extra front mounted circuit board for

I have just installed a nextion 2.8 screen to my ubitx v5 and I noticed when I tap the screen to select, the s meter shoots up to s8 and sticks there until I either reboot or speak loudly into the

This is true,my board came with the 4k7 resistor and the wire link in place but not soldered. Get Outlook for Android<https://aka.ms/ghei36> ________________________________ Sent: Sunday, November 10,

I had simar issue even wirh 2.8 nextion. I placed a 2uH inductor in series with 5v line goingbto nextion and a decoupling capacitor of 100uF16v at the nextion side to ground. That has reasonably

My long lost twin brother ! Sent: Monday, November 11, 2019 16:38 To: [email protected] Subject: Re: [BITX20] Nextion 5" display noise #ubitx #nextion #noise So, what has two thumbs and is a huge

So, what has two thumbs and is a huge doomarse? <- this guy. I was on LSB but adjusting the USB setting. 95% of the display noise is gone now.

Hi, I used the AADE filter simulation/design program.? I posted because I had seem some comments on the power outputs and was curious to simulate the low filter to see if that might impact some of

I have a v5 uBITX in Sunil's 5" case with audio amp kit. Audio sounds just fine until I power the Nextion display. It's got a terrible buzz, and you can hear digital noises when the display changes,

Mark, I assume you posted to this old thread because you wanted to tell us about your simulation results. Yes, the uBitx should not be used on 160m without a suitable LPF inline with the antenna.?

Thanks guys. I ran into the front panel board problem - after I’d soldered the board (I built it first since it was “simplest”j. ?The front of the jacks are set back from the edge of the board.