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I WAS GIVEN A MICROBITX WITH A BLOWN UP TDA2228M CHIP, I REAPLACED IT AND NOW THE AUDIO IS VERY LOW. IS THERE ANYPLACE ELSE THAT I SHOULD BE LOOKING TO FIND OUT WHY I HAVE LOW AUDIO? ALSO THERE IS A

Here's an old thread on it: ? ??/g/BITX20/message/40038 Here's a summary: The uBitx 11.9965mhz BFO can have harmonics that can beat with harmonics of the 16mhz oscillator on the

Did you mean *TDA2822M*??? That is in the ubitx transceiver (80-10M).? The bitx40 is a totally different radio, but isn't called a microbitx. If you mean the ubitx transceiver, you can find help

Hi! Farhan already knows this story of mine regarding 2822's. Recently I made a simple? low noise receiver. Seeing the specs and after a nice discussion with Farhan I used this chip. Bought 10 pcs

Sorry about that I thought you were asking for the BITX40 schematic. I don't have a copy of the ubitx. Dale

Finally got the notice that my uBITX has been shipped to India Post.? Ordered it 1/20/18 and received notice 3/13/18.? It would appear that they are catching up a little as I expected about a 45+

Could be to the wiki. But if so, then all 10000 members of this forum could be editing it. I think a curated errata page on ubitx.net would be preferable for new builders. But by all means, we can

Try this one, I think it prints a fairly clear drawing. Dale Kg7ssb

I assume your uBitx arrived with the bad WX TDA2822 part.? This part:??https://www.mouser.com/ds/2/294/NJM2073_E-275459.pdf should be a direct pin-for-pin replacement of the TDA2822. Mouser part

I WAS GIVEN A MICROBITX 40 RADIO WITH A BLOWN TDA2228M CHIP. I REPLACED THE CHIP AND NOW I HAVE AUDIO BUT ITS VERY LOW AND THERES A HIS ON THE HEADPHONES, MY QUESTION IS DOES ANYONE KNOW WHERE I

If there's going to be a link to errata, it could be a link to the wiki page on errata. Doesn't have to be one pointing to the first page of it making anyone dig around for anything. For all that

Assembled my ubitx last week and after a demonstration last night in front of some boy scouts one of the parents complained of a loud tone coming from the speaker.? So I busted out my cell phone and

Hi David Same question also, I received ubitx today and it has the same faulty ic.? 2073D - is it a straight replacement for TDA2822? Sajid

I agree, Tom.? I have to admit that I'm excited to see what 2822 my uBITX that shipped today has, WX or other.? I'm not even worried if it is bad or blows up...I may even secretly be hoping for a

Ingvar, even when the IDE opens all 9 files, it knows how to compile and link together all of them (including libraries) if you ?choose compile sketch.? So If there are still errors, please post

I have to agree that Farhan & company are doing a fantastic job!? Amazing rig at an incredible price!? Kudos also to the exceptional support community!? Better customer service than I've had with

That looks great!? I've got the small Jameco case and it's just about a perfect fit.? I tried to glue my printed faceplate to it, and the solvent from the glue melted the faceplate and the enamel on

I was on a Big Big Pic list 30 years ago.? It got confusing too.? I like the fact most put uBit or BitX in the subject, that's a must. The Pic List had a rule to put OT "Off Topic" in the subject

Dennis KG4RUL, and others..... It may be that the extreme focus on Farhan's BITX40 and uBITX has now died down a bit, making other hardware and other issues more obvious. This has always been the

Yep, and every forum and FB group I've ever run has only had one rule, it has rarely been needed: "Everyone here is supposed to be an adult. Act like one." Vince. -- Michigan VHF Corp.