Re: TDA2822 ill treatment test! Photo of blown TDA
160 has some kind of contest going on as well as a number of QSOs. 75 is quite busy. Should be able to find traffic on either of those bands.
Vince.
--
Michigan VHF Corp.
By
Vince Vielhaber <vev@...>
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#43407
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Re: TDA2822 ill treatment test! Photo of blown TDA
Forgot another important detail: powered by battery measuring 12.6V under load.
By
Jacob Farnes
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#43406
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Re: TDA2822 ill treatment test! Photo of blown TDA
Finally got mine on the bench. Just wired up audio pot, encoder with button, tip & sleeve of 1 heaphone jack, power, and Antenna.?
Used my N2CQR-designed 160m-capable HPF with the original ceramic
By
Jacob Farnes
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#43405
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Re: B40 LM386 and ?B TDA2822 and that 470?F Cap
What Vince is proposing is that the stereo jack be wired with the TDA2822
output going to the tip, ground going to the ring, and the sleeve floating
(not grounded). A speaker with a mono plug will
By
K5ESS
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#43404
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Re: Speaker Jack
On Fri, Mar 2, 2018 at 06:51 pm, Walter wrote:
>
> On Fri, Mar 2, 2018 at 03:50 pm, Clark Martin wrote:
>
>> You could use the second audio amp in U1. ?The TDA2822 is a dual
>> amplifier. ?What
By
Walter
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#43403
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Problem trying to compile Farhan¡¯s original BitX40 ino sketch.
While trying to compile the original Farhan BitX40 sketch, I keep getting this error message-
*stray ¡®\302¡¯ in program?*
ive been able to compile many other sketches but can¡¯t seem to get this
By
Guy N7BIR <sgbridge@...>
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#43402
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Re: B40 LM386 and ?B TDA2822 and that 470?F Cap
I'm with you. The standard for audio outputs on a communications rig doesn't include stereo headphones. That said, the inclusion of an isolating capacitor on the output just makes good sense.?
Sent
By
Thomas Sharka
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#43401
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Re: Bitx40 Analog VFO
The bitx40 kit should have come with a ready wound toroid. The coil is 9uH as I remember.
Raj
By
Raj vu2zap
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#43400
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Re: B40 LM386 and ?B TDA2822 and that 470?F Cap
I didn't, nor would I ever tell someone to do that.
It's been pointed out in the past that there are errors in the wiring diagram. If it says that, I'd call that an error. I haven't looked at the
By
Vince Vielhaber <vev@...>
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#43399
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Re: Bitx40 Analog VFO
If you only get black squares it sounds like the contrast is off. Do
you have a potentiometer on the back side of the Radiuno you can adjust
for contrast?
tim ab0wr
"Justin Maynard KN4FAW"
By
Tim Gorman
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#43398
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Re: B40 LM386 and ?B TDA2822 and that 470?F Cap
Respectfully -
If you wire the positive output of the 2822 to both the tip and ring
terminal on the TRS jack and the ground lead to the sleeve terminal and
then plug in a mono plug you *will* short
By
Tim Gorman
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#43397
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Re: Bitx40 Analog VFO
I finished a BitX20 Ver3 some weeks ago and opted to go the analogue VFO route.?After a decent warmup it sits rock stable during a QSO and I've listened in to 20 min ragchews without having to touch
By
Paul VE7NRI
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#43396
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Re: Speaker Jack
On Fri, Mar 2, 2018 at 03:50 pm, Clark Martin wrote:
>
> You could use the second audio amp in U1. ?The TDA2822 is a dual
> amplifier. ?What you¡¯d need to do is this:
> ?
> Remove R75
> Connect
By
Walter
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#43395
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Re: Fldigi with UBITX
I set up a signal link.? I like signal links.? they are easy to work with.? I also rigged up a cooling fan on a thermo switch to cool the finals.
--
73, W9KJO
Walter
By
Walter
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#43394
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Re: Bitx40 Analog VFO
A really good non-drifting VFO means lots of work!
Mica Caps and Inductors that don't change.
It is just not worth it?? You get to decide.
Just FIX the Raduino, and you will be much happier and
By
Michael Hagen
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#43393
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Re: Bitx40 Analog VFO
Justin:
There is something to be said for fixing the radiuno.
The resulting signal is much more stable than an
"ordinary" analog VFO.
That being said, there is nothing wrong with using an analog
By
John Backo
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#43392
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Re: Anyone need a genuine uBITX Raduino?
#ubitx
Hi Justin, a group of friends and I have come up with a much improved board we call the "RadI2Cino", pronounced "Rad ee too SEE no".? We had a few for sale earlier to test the waters and the few we
By
Jim Sheldon
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#43391
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Re: BitX Volume Knob 3D Print File
Thanks for all the suggestions and info, guys. This is getting complicated
quickly!
Thanks,
Roy
WA0YMH
By
Roy Appleton
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#43390
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Re: Shipping notification
Purchased 30 Dec of 2017 std shipping
Received no email from PayPal account or Hfsignals email (yet??)??
But But But WOW Woweeeee
DHL Express Mar 2 2018 17:00PST to RememberTubes ? N7PB
By
oldnormanbates <oldnormanbates@...>
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#43389
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Re: BitX Volume Knob 3D Print File
They fit snug on the bitx40 shafts with my printer settings. If it comes out too tight reduce the filament, or too loose then increase the filament feed rate.
By
_Dave_ AD0B
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#43388
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