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Damb you Ashhar... now I have another project to add to the ever growing list.... uBitx looks like a very interesting rig, I am sure it will evolve a bit in the next few months so it is probably lucky

"So my question is should the diodes be from pin 12 or pin 14 of K1 (or does it matter as the two are connected in the unenergized condition)?" It doesn't matter. You are protecting the RX input from

OOPs meant to say? "The attached photo shows the diodes attached from Pin 12 to Pin 16 (K2-14 to Gnd) and two wires for TX LED (pin 1 to Gnd)." Pinout also got reformatted hope below version is

Hi all, I am still working on my BitX40 v3 and having a great time! Thanks to everyone for all there help in my debug so far. Quick question. ?I have the schematics but is there a complete

Did my best to ohm out the traces and checked web based data. Pinout of K1 is the same as a 16 pin dip with the same spacing so some pin counts must be skipped. Pinout for bottom view of K1 (Easy to

Just out of curiosity, Ash, why are L8 and L9 separate? Is it topography or is there a reason not to use an UNUN here? john AD5YE

That QST article suggests the return loss might not be acceptable across more than one band. ?The topology agrees but Ashhar's values differ significantly from those recommended, might be something

Paul, Ashhar, please correct any errors in my message. I believe the two lowpass/notch filters used by Ashhar in the transmitter output are based on the the W3NQN filter design described in the

Mr Ashhar, Would you consider providing a list of the ?winding details ?and cores used for the ? Ubitx ... Regards Marc 'Gw0wvl'.. Sent from Yahoo Mail on Android On Fri, 3 Mar 2017 at 5:58, Ashhar

Again: Manage library, search for SI5351 and select 1.1.2 if 2.0 is installed. Try again. Ron – PA3FAT Verzonden: 5 March, 2017 21:08 Aan: [email protected] Onderwerp: Re: [BITX20] Setting up Arudio

I too am struggling with all the error msg from the Si5351 library. I get the following error plus many more.? I have tried various versions of the library. I'm using IDE version 1.8.1. Paul KL7FLR

You pretty much addressed Allison's entire list of things to improve on the Bitx with this new uBitx design, and did so before she put out her list. ?I like how you chose to do CW. ? A few questions

I have biased all the four amps to exactly the same current. the current is a little high, that is to improve the signal handling. - f

Ashhar,?I noticed some differences in the first amplifier of the TIA circuit. Looks like you are biasing it for more current, perhaps to improve strong signal handling. Or maybe this is necessary for

Nice Raj Thanks for the efforts in arriving at the solution. sarma vu3zmv

T10 is same. T11 is not really a trifilar transformer. Instead, it is an 8t:10t transformer on an ft3743. As there is no dc through T11, it can handle 10 watts of rf. - f

T10 and T11 look like all the other trifilar FT37-43 transformers but as they are both handling power I assume they need something bigger. Ashar, what cores did you use? Also the top capacitors in the

Excellent suggestion. I will try adding this. We need a break in the if chain anyway - f

Check via Manage Libraries the version of Si5351 library. Probably it is at 2.0, whereas 1.1.2 might get things to work. Ron – PA3FAT

Hi Mr. Farhan, I glad that you finish to design new uBITX. If you do not finish to design PCB. Can you make Header pattern on your PCB for IF signal. Because I wish to connect your new uBITX with