On the agc, start with it off, find a dreadfully loud signal, and switch it on. It mostly acts only on big signals, you still need to manually operate the volume control for many signals. I find agc m

#ubitx

That would seem a reasonable way to proceed. there is a larger area of copper under the board that is mostly ground (circuit common). Ideally a wire under 1cm is a good thing but in general shorter is

#ubitx #sdr

I'm looking to install the G4HUP buffer similarly to this: https://groups.io/g/BITX20/message/54410 What I'm thinking I'd like to do, is use double-stick tape to attach it to the underside of the uBIT

#ubitx #sdr

Hello, I'm slowly upgrading my uBITX. My latest add was the ND6T AGC from kit-projects.com. I have it successfully (I think!) installed, but I'm thinking I may have missed something. I have all of the

#ubitx

Hello , The capacitor is tap directly on the mike plug and the AF signal (in parallel in fact) The main purpose is to insulate the mike AF circuit from the vu-meter device. I am using the full device

#ubitx

Do you use the whole circuit board? Or just the meter, connected to the transformer and capacitor? Also, where do you put the capacitor? Would you use the capacitor to block the DC bias from shorting

#ubitx

hello, You can monitor your AF intput with this device . You can tap directly at the input from the mike plug though a 600/600 transformer and in serie with a 10nf capacitor. vu meter 73s

#ubitx

Is it as simple as adding the(appropriate) resister in series with the meter + side and ground the meter - side? And where would I tap the a V4 board for the resister going to the + meter? Don Km4udx

#ubitx

Would this count? Jack, W8TEE

#ubitx

Big fan of analog meters. For bitx levels and especially in SDRs—to balance the chi. ;-)

#ubitx

Hello, Many options are possible to tune your AF level. obviously measurement tools like ocsilloscope tap directly at the output of the Af Amplifier or a spectrum analyzer is also very useful. in anot

#ubitx

II do not know of a way to set it with out some test equipment, at least a dvm that can measure the current to the PA section. Using either a current meter on the PA input, or an RF power meter on fee

#ubitx

hello, in order to control the AF input for voice and digital i add the level input measurement on a vu-meter. You just need to calibrate the level you display on it to prevent any overloading of the

#ubitx

Hello, So I'm driving digital audio into the uBITX, and I'm wondering how, in the absence of any real test equipment, to properly set the audio input to avoid transmit distortion. Now, I do have the a

#ubitx

Thank you for the information. That and a good hard look at the soldering job and I have a working ubitx now. On to the firmware..

#ubitx

Maybe this? Have a look at Errors and learning with Bitx40 just a few topics down . . . F- Subject: I only received the audio from an AM radio. The frequency changed but nothing else was heard. Soluti

#bitx40help #ubitx #filters #bitx20 #bitx20help

“all over the bands. it dosent matter if i am on 3,5 or on 28 mhz. this station is over 100km from me” Something else is wrong. Sounds like a bad solder joint that is acting like a diode demodulation

#bitx40help #ubitx #filters #bitx20 #bitx20help

use the linked calculator and try making a band stop filter , say from 1 to 2 MHz It works like trap and you can manage the enclosure of ubitx should better be metallic and the body grounded. the filt

#bitx40help #ubitx #filters #bitx20 #bitx20help

Hello everybody, i have a problem with my ubitx on receive, i am receiving an AM station who broadcast on 1530khz all over the bands. it dosent matter if i am on 3,5 or on 28 mhz. this station is over

#bitx40help #ubitx #filters #bitx20 #bitx20help

Lisa, try connecting pin6 to your pin7 on the socket this will give you the ground connection for PTT. The PTT switch on this mic is between pins 5 & 6. Skip Davis, NC9O

#ubitx