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Let's assume you calibrated to a 1000 khz AM broadcast station. And that you were 100 hz off in doing so. Those errors are proportional to frequency, so the 12mhz BFO would be 1200 hz off, enough to

My 3904s were gone long ago in favor of MPSH10s save the predriver which i not settled on yet. ?That stage has to be about 12 db to drive the PA (RD16HHF1s not those silly motor switches). About 28

I did but I might have done it wrong...Is there a better way then just listening to the audio of an AM broadcast station?

Is the rig calibrated? If frequency calibration is off by 100ppm, that can put the BFO on the other side of the 12mhz crystal filter.

I fired up the uBitx and connected it to an antenna and noticed that the stations are on the wrong sideband. On 20 mts stations are only audible when I listen in LSB while this should be USB. I

I don't have to configure any jumpers to program my Pills. It works just like programming the Nano. No need to access anything on the board. Just press the Arduino compile/upload button and you're off

You are correct, the CB ?is 128k ?and the C8 is 64k. All my pills are C8's ?but I have compiled some simple programs ?on them and told the arduino it was 128k ?version and they worked fine but

Agreed on the redesign effort.? I am used to working with 2M SSB (Sunday morning SWOT net), and have the 2M add-on to my KX3.? It works extremely well for satellites, as well.? With just the little

I have several Pills and the compiler reports all are 128K. The official 128K chip version is CB (I think), which looks very much lIke C8 unless you use a magnifier Let? me know how you're making out

When the boards are delivered and tested, I'll put the design files and Gerbers on GitHub. I'll also make the boards available to buy directly from the fabricator. Joe

Is there any interest in custom printed panels for the?banggood excellway EF01 enclosure (

I did see some online calculators for calculating the capacitor values. Like you said it depends on the value of each crystal. I don't think it is worth it for me to remove the crystals and do all the

WIlliam, ITs missing a stage if you want to use 2n3904s at 10DB.? However if you use a higher frequency (and likely a more costly) part that is not required. Its about gain three stages at roughly

The UBitx and case has been sold.? Thank you all. 73 Fr RichardWB8YXF

That is the total bandwidth of the filter. The following is not exact but close enough for me to see what was going on. I fed an audio signal into the mic input at 1000 Hz. At 28 Mhz I was getting 5.5

I just received ?mine today and plan on getting it up and running just as it was shipped. Their are changes I want to make but for now I am going to put it on the air like it came. That ?is just

My doubt is because the same pass filter of BITX40 should not have 6uH because the scheme says 40 turns on toroid T30-6. Apparently this does not affect you. On the other hand I thought it was a

Please do not create a new topic for this every time you post.? I make it hard to provide answers because we replied over in the other post. You are not alone. The problem is understood and people

LIke Arv said.? and if its low or high spreading to closing the turns will move the value some. All you care is the frequency of resonance.? You can tweak the cap soem to make it work. Allison

W3JDR ? Thanks for sharing, this is somthing I would be interested in. I have a maple mini and it does have the 128k but the blue pills I have are C8's ?and are 64k . ?I have seen articles where