Re: Low power output on ubitx
#ubitx
#ubitx-help
Nope.??
They are cheap relays.
As they must be on an all band HF transceiver at this price.
They have been known to fail.
Though to be stuck in 80m, seems all three would have to fail.
Seems
By
Jerry Gaffke
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#45154
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Re: FT8 on my uBITX
#ubitx
"Randy" <randy@...> wrote:
Yep. Didn't think of that. The mic and key jacks will ground the front
panel if you mount them on the front. Make sure you scrape paint or
whatever is needed so
By
Tim Gorman
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#45153
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Re: Low power output on ubitx
#ubitx
#ubitx-help
Mike,
I dunno. Those figures sound a little low to me. I don't remember what
mine pulls in CW but I know it is more than an amp. And it is 610ma
with the PTT down on LSB at 3.95Mhz.
470ma is just a
By
Tim Gorman
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#45152
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Re: Low power output on ubitx
#ubitx
#ubitx-help
Mike,
On CW, frequency 3.95Mhz I get about 35v pk-to-pk on the tab of the
irf510's. That's a little higher than you show.
Ck message 43844. It has a jpg from ve3pe showing some of the voltages
(dc
By
Tim Gorman
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#45151
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Re: Low power output on ubitx
#ubitx
#ubitx-help
Thanks Jerry!
I can't get to everything tonight but will tomorrow afternoon.
To answer a couple of your questions now...
I'm using a 2A fuse inline from a current limited PS that maxes out at 3A (I'm
By
Mike R.
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#45150
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Re: FT8 on my uBITX
#ubitx
I believe the antenna panel mount will take care of one end.
Randy
By
Randy
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#45149
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Re: Low power output on ubitx
#ubitx
#ubitx-help
Hi Tim,
Thanks for the reply. In receive it draws about 160ma. In CW transmit with RV1 all the way counterclockwise it draws about 1A on 7.150 into a dummy load. With PTT it is 470ma in LSB.
Mike
By
Mike R.
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#45148
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Re: Low power output on ubitx
#ubitx
#ubitx-help
I suggest sticking with 12v into the rig till you get it working,
higher voltages just make it easier to blow the finals.?
Best to fuse the supply, perhaps 2A on the PA-PWR to the finals and 0.5A on
By
Jerry Gaffke
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#45147
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Re: Erratic tuning with my new uBitx
Chris
Ubitx manager should work fine on WinXP - it is pretty undemanding.
If you download the parameters from the uBITx and save these before you muck around with settings you should be
By
Mike Woods
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#45146
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Re: Low power output on ubitx
#ubitx
#ubitx-help
Mike,
If you hook an ammeter into your power lead going to the ubitx what
does it show when you push the PTT?
Mine shows about 600ma with no microphone connected.
tim ab0wr
"Mike R."
By
Tim Gorman
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#45145
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Re: Custom Graphics help for S-Meter
I am having no trouble displaying the raw input data from the AGV voltage, which ranges from very low values that you observe to over 200. I also have no problem using that value in a decision tree to
By
Vic WA4THR
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#45144
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Re: Low power output on ubitx
#ubitx
#ubitx-help
I'm running out of ideas and need some help. First, it would be great if there was a schematic with voltage measurements on it that one could use for debugging a non-working ubitx.
I have the
By
Mike R.
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#45143
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Re: uBITX M1, M2, M3, M4
Ah yes, thanks--I see that they're connected to K3.
By
Michael LeBlanc
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#45142
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Re: uBITX M1, M2, M3, M4
So you have left M1 and M2 floating--or did you tie them to ground?
I plan to use my uBITX for digital modes also.
By
Michael LeBlanc
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#45141
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Re: FT8 on my uBITX
#ubitx
Be aware that the front and rear panels are not attached to the metal
of the rest of the case. The white part you see is some kind of plastic.
If you want a completely RF tight case you'll have to
By
Tim Gorman
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#45140
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Re: Custom Graphics help for S-Meter
I totally screwed this post up trying to do it on my phone, so let me try again!
Vic, you might want to look at the SWR meter code in my software for the antenna analyzer over on the
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John P <j.m.price@...>
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#45139
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Re: My uBitx with 5v mod
#ubitx
@ Raj,
Good question and I tested it out (whilst disconnected from the uBitx).
With the jumper completely removed, the output is 6v.
I suspect that moving the jumper to the 6v position is merely
By
Nigel G4ZAL <nigel@...>
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#45138
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Re: FT8 on my uBITX
#ubitx
Thanks Marco and Randy, will investigate - Rich
By
Richard Spohn
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#45137
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Re: Custom Graphics help for S-Meter
Vic:
The analogRead() function returns a value between 0 and 1023, so the small values you're checking are not displayed. You may want to map the analog values to S meter values using the map()
By
Jack Purdum <jjpurdum@...>
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#45135
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Custom Graphics help for S-Meter
I am tapping an AGC voltage into an analog input of the Raduino for an S-Meter, and it is working well to display "S9+5", for example, on line 2 of my BitX40. Now I am trying to add a bar-graphic to
By
Vic WA4THR
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#45134
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