Re: A Breadboard Technique for the uBITX
Have any pricing done on them yet?
By
Dennis Yancey <bigbluedry@...>
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#53326
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Re: Known issues on uBITX r4
#ubitx
My 2A supply will not work the ?BITX on 80M.? The supply trips out on overcurrent.? It works well on 40M and above.
By
Arvo W0VRA
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#53325
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Re: RF in 12v Supply
0.1 mfd across the power leads at the power supply and again at the uBITX
power
connector. It could be that RF is modulating the 12V power lead and that
causing
RF in the power supply regulator.
By
Arv Evans
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#53324
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Re: RFI from uBitx TX after AGC and other mods installed
Seems like the problem is coming from the 5 volt lead. I am hesitant to try more than 10uF from it to ground due to the charging surge. It already has 2uF when the AGC is connected. What about some
By
Don, ND6T
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#53323
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Re: Running on a Jump Box
You misunderstand me, Ralph. I don't WANT it to act the same. If I wanted that, I'd just run it directly from the jump box. But I don't want it to run away in RF, as at that level it can damage my
By
Gwen Patton
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#53322
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Re: Known issues on uBITX r4
#ubitx
Ah, ubitx.net says ¡°5 Amps should suffice¡±.
// hiro, JJ1FXF
2018/06/30 2:33¡¢hirosmb JAZZ <hirosmb@...>¤Î¥á©`¥ë:
By
hirosmb JAZZ <hirosmb@...>
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#53321
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Re: RFI from uBitx TX after AGC and other mods installed
Those two daughter boards especially with those long wires are a sure way
of inviting RF pickup especially being so near the LPFs relays.
It could be that the boards are picking RF directly by being
By
Lawrence Galea
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#53320
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Re: Known issues on uBITX r4
#ubitx
IC.
https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F122586871489
Is the one like above OK?
Thanks in advance, Ralph.
// hiro, JJ1FXF
2018/06/30 2:19¡¢Ralph
By
hirosmb JAZZ <hirosmb@...>
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#53319
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Re: RF in 12v Supply
Make sure the ground is a healthy healthy healthy connection as well, either a chassis or some pretty thick wires and lots of them, arrange so they all connect at some point called single point
By
Gordon Gibby <ggibby@...>
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#53318
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Re: RF in 12v Supply
That's apart from Gordon's suggestion
By
Lawrence Galea
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#53317
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Re: RF in 12v Supply
Try RG58 for the supply.
By
Lawrence Galea
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#53316
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Re: Known issues on uBITX r4
#ubitx
You may just get by with a 2 amp supply, but I would go with at least one
rated for 3 or 4 amps. It is always to have a few more amps than needed so
the supply runs cool.
By
Ralph Mowery
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#53315
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Re: RF in 12v Supply
Sprinkle 0.1 ufd capacitors from supply lines to ground. They¡¯re cheap, and they¡¯re great!
By
Gordon Gibby <ggibby@...>
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#53314
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RF in 12v Supply
The issue discussed in the 'RFI from uBitx TX after AGC and other mods installed' thread appears to be caused by RF getting into the 12v supply and from there into the 5v supply that feeds the AGC
By
Mark M <junquemaile@...>
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#53313
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Re: A Breadboard Technique for the uBITX
The photo is of a 5" touch screen (resistive) display (7" is an option) and the processor is the Teensy 3.6. Al (AC8GY) and I are working to finish the JackAl board for everything. I posted a
By
Jack Purdum <jjpurdum@...>
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#53312
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Re: Known issues on uBITX r4
#ubitx
Thanks, R.E.
Yes, I read about the power supply in different thread.
If I am correct, ubitx works properly with 12V 2A power supply, right?
Let me at first carefully find the one at AKIHABARA where
By
hirosmb JAZZ <hirosmb@...>
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#53311
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Re: A Breadboard Technique for the uBITX
I haven't experienced any noise problems.? I still must shorten some wires and think about a final mounting arrangement.
--
Jon Titus, KZ1G
Herriman, UT USA
By
Jon Titus, KZ1G <tituskz1g@...>
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#53310
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Re: A Breadboard Technique for the uBITX
Very nice, Jack.? Have you described your setup?? I'm interested in the type of display and processor board, and the software.
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Jon Titus, KZ1G
Herriman, UT USA
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Jon Titus, KZ1G <tituskz1g@...>
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#53309
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Re: A Breadboard Technique for the uBITX
I used a plastic cutting board and some pieces of single sided copper clad board mounted with "L" brackets as a temporary "enclosure" to mount
the board and controls ?so that I can play with mods and
By
Michael VE3WMB
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#53308
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Re: Known issues on uBITX r4
#ubitx
Arv,
Appreciated for your comments and pointers of details.
Certainly let me try some mods you advised after I set up my ubitx as it is.
I am not a hardware guy and so need a little more time to
By
hirosmb JAZZ <hirosmb@...>
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#53307
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