Re: TDA2822 experiments and mods
What brand of TDA2822's were blowing up on you? I would not expect a short to ground at the jack to blow the part unless? you had the volume cranked way up. And I'd think the short would have to be
By
Jerry Gaffke
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#43874
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Re: uBITX - U1 Getting Fried - possible cause
#ubitx
Dan - If you mean the LM386 adapter, look on ubitx.com Howard K4LXY
By
K4LXY
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#43873
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Re: TDA2822 experiments and mods
I don't think we're going to find a heat issue. It's happened to people just turning the rig on which leads me to believe there's a spike. The chip is already running on the edge, a small spike could
By
Vince Vielhaber <vev@...>
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#43872
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Re: uBITX - U1 Getting Fried - possible cause
#ubitx
I saw the picture of that adapter somewhere, but now I can't find it. Could you link to it please? Thanks. Dan, W2DLC
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Daniel Conklin <danconklin2@...>
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#43871
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Re: njm2073
A socket should be fine. I doubt you will be replacing the chip much now that you have moved away from the DX.
By
Jerry Gaffke
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#43870
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Re: The issues of the TDA2822
According to Tayda, the 2822M is an SGS-Thomson part, while the 2822L is made by UTC. I should also note that the 2822M is also out of stock but they have over 120k 2922Ls. Vince.
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Vince Vielhaber <vev@...>
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#43869
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Re: Raduino, powered by a Teensy 3.2.
#ubitx
#bitx40
Gerry: Contact me off line at my QRZ.com email. Jack, W8TEE To: [email protected] Sent: Wednesday, March 7, 2018 9:43 AM Subject: Re: [BITX20] Raduino, powered by a Teensy 3.2. #ubitx #bitx40 I have
By
Jack Purdum <jjpurdum@...>
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#43868
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Re: Raduino, powered by a Teensy 3.2.
#ubitx
#bitx40
I have done some prototyping of this... with some degrees of success. Ideally it needs an AGC before the Teensy though. ? You can hear some (poor quality) audio here:??https://clyp.it/user/htchmxv0
By
Gerry Kavanagh
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#43867
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My uBITX shipped today
I order it?on January 5, 2018 through Paypal that today write me about delivery time: about 3/4 weeks via Indiapost.
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IK6CRE - Stefano <ik6cre@...>
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#43866
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Re: USB for digital ops wierd noise and low output power
I am a newcomer and upgraded the sketch to have USB access on my bitx40. Also removed C91 and C92 but as soon as I switch to USB comes a howling noise from the speaker. That strange sound dissapears
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Francisco Neira - OA4CKN <neira.francisco@...>
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#43864
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Re: TDA2822 Replacement
Dex, Yes it was a funny misuse of the word and it was a type-o late at night..... what is not funny is having some kiwi like you come at me and just short of call me stupid and "should go back to
By
N8DAH
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#43863
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Re: The issues of the TDA2822
DIP and 12V rails, too.? Seems like everything's either got 2 AA batteries or is charged by a USB connection. Great discussion on all this!
By
Arvo W0VRA
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#43862
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Re: The issues of the TDA2822
What I have been asking Santa aka Farhan is for a similar circuit that just plugs in to the existing 8 pins. No need for output caps and such as it is already there! Raj
By
Raj vu2zap
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#43861
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Re: TDA2822 experiments and mods
Solution 3: 78L09. the center lead looks soldered but it is floating but the tab is soldered to the copper below it. The white wire is my fix for prevent the filter relays from clicking during PTT.
By
Raj vu2zap
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#43860
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Re: The issues of the TDA2822
Ash and all, Jerry Gaffke provided a valuable link: https://ludens.cl/Electron/audioamps/AudioAmps.html the second circuit (without crossover distortion compensation) seems to me to be more than
By
Rod Self <km6sn@...>
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#43859
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Re: TDA2822 Replacement
I think there was some misspelling there.?? Try Occultation or Osculation. Ron W7HD -- W7HD - NAQCC#7587 OMISS#9898 KX3#6966 LinuxUser#415320
By
w7hd.rh <w7hd.rh@...>
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#43858
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Re: The issues of the TDA2822
Greetings UT Source is showing high stocks (34000) of TD2822M https://www.utsource.net/itm/p/911560.html ( https://www.utsource.net/itm/p/911560.html ) We still think based on the finding of the GQRP
By
G1KQH
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#43857
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Re: The issues of the TDA2822
Probably a good idea. I can think of several devices which I don't expect to disappear anytime soon, like the LM324. Or even the JRD audio chips or the NE5532. I am sure the guitar repair people are
By
John Backo
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#43856
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Re: The issues of the TDA2822
NJM2073D. Also available at digikey . Good pick up Jerry
By
Gordon Gibby <ggibby@...>
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#43855
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Re: Dynamic mic on ubitx
I solved my Dynamic mic problem by installing the *5 Band Mic Processor by UR8QW*.? I mounted the potentiometers on the front panel so that I now have a mic processor with compression, mic level and
By
Walter
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#43854
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