Re: Is Ver 5 the same physical dimensions and layout?
Mike,
Should have mentioned that if the Nano is not socketed in your existing Raduino you will need to change the whole Raduino.
Bob GM4CID
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Re: Is Ver 5 the same physical dimensions and layout?
Mike,
With the V5 board change the Nano to the one that came with your new V5 board and you should be good to go.
Bob GM4CID
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Raj,
Thank you for the info. Is there a pdf of wave forms expected at the TP's? Thank you for any assistance.
Jon S
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John, Thank you. I have a V4.
Jon S
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Curt, Thank you for the info.
Jon S
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Re: 2nd run of the spectrum test on the V5
#ubitx
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Farhan,
Under "Binaural beats" on the left pane, we can generate dual
tones.
Raj
At 26-02-19, you wrote:
you can generate a tone at 1 khz
from here:
Once you connect your pc to ubitx, measure the audio at mic input to be
50 mv peak(100 mv peak to peak). Then you can repeat the tests.
- f
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On Tue, Feb 26, 2019 at 3:55 PM Lawrence Galea via Groups.Io <9h1avlaw= [email protected]> wrote: V3 Audio output TDA2822 V4 Audio output discrete transistors? V5 Audio output LM386
On Tue, Feb 26, 2019 at 3:51 PM Bill Robbins < wa8cdu@...> wrote:
I received my uBitx yesterday.? Can someone explain to me how to tell which version I have.? No revealing marking on the board or packing slip.
Thanks
Bill
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I have a Bitx 40, I can't help you with your problem but just had to say that I love your name ?, regards Bill (G6ATO) Bates.
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The push button does work, but can not change function options after that. It leaves the version up there, not sure if it suppose to or not.
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V3 Audio output TDA2822 V4 Audio output discrete transistors? V5 Audio output LM386
On Tue, Feb 26, 2019 at 3:51 PM Bill Robbins < wa8cdu@...> wrote:
I received my uBitx yesterday.? Can someone explain to me how to tell which version I have.? No revealing marking on the board or packing slip.
Thanks
Bill
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I received my uBitx yesterday. ?Can someone explain to me how to tell which version I have. ?No revealing marking on the board or packing slip.
Thanks
Bill
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The push button does work, but can not change function options after that. It leaves the version up there, not sure if it suppose to or not.
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Sorry all, I hit send when I meant to delete what I had partially written yesterday evening.
Not a completed thought, and I didn't think my comments would really be of much help.
But since I did send:
With the specified switch point of Nano's input buffer at 60% of Vcc,and assuming Nano running at 5V,? the Teensy and Nano aren't compatible by min spec.
With a capacitive load, the Teensy should drive to 3.3V rail.
Sascha, I think you are on the right path. Also consider switching speed / baud rate.
Again my apologies,?
Gary
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There's a 1k series resistor in the RX and TX lines? Is this what you mean by "in"?? That would slow the slew rate of the signal.
A 1K pull-up to 5V, shouldn't be a problem.
The K20 on Teensy 3.2 is 5V tolerant on digital I/Os. You can drive the inputs to the Teensy 3.2 to 5V without an issue.
The Teensy runs 3.3V Externally. (internally it's nominally 1.0V, but that's not the issue)?
At 3.3V the K20 VOH min is? 3.3V -0.5V = 2.8V @ -9mA of drive.
This should work fine with standard 5V TTL levels, (VIH 2V), BUT the Nano/ATmega is not TTL.? VIH is speced at 0.6Vcc? for Vcc 2.4-5.5V.
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Hi,
From what I read, I don't think it would be easy to simulate the encoder with a wire.? It needs timed make-break between the two internal switches.
Anyway, does the encoder press button work to get menus?? Does the encoder then work to change function options?
Do all the nano versions leave the version number up on the screen like that?? Mine disappears after startup.
73,
Mark.
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Re: Full throttle SSB distortion on 15 and 10m
Oos so ever it is,
I suspect instability caused by your output wires. Shorten them to
minimum or wire a coax to the board.
Raj
At 26-02-19, you wrote:
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Actually my unit has always
shown more than 10w on low bands, but ironically it develops that full
power distortion (total noise) only on the higher bands (15-12-10m) where
the power is much lower. Is it just an overdrive issue to the poor
3904s?
Il 26/feb/2019 14:21, "Raj vu2zap"
<
rajendrakumargg@...> ha scritto:
- I agree, 10W on 40 should be reference of modulation level.
- I have not got my hands on a v5 and when I do I will report.
- Raj
- At 26-02-19, you wrote:
- >Getting 15W on 40 is pushing for excess... should be about
10.
- >
- >And 2W is about all you get on 15 and 10 with out amp
mods.?? Likely less.
- >
- >More audio more power but there is a point of distortion as the
power amp cannot do it.
- >
- >Allison
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Re: Full throttle SSB distortion on 15 and 10m
Actually my unit has always shown more than 10w on low bands, but ironically it develops that full power distortion (total noise) only on the higher bands (15-12-10m) where the power is much lower. Is it just an overdrive issue to the poor 3904s?
Il 26/feb/2019 14:21, "Raj vu2zap" < rajendrakumargg@...> ha scritto: I agree, 10W on 40 should be reference of modulation level.
I have not got my hands on a v5 and when I do I will report.
Raj
At 26-02-19, you wrote:
>Getting 15W on 40 is pushing for excess... should be about 10.
>
>And 2W is about all you get on 15 and 10 with out amp mods.? Likely less.
>
>More audio more power but there is a point of distortion as the power amp cannot do it.
>
>Allison
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This was a Factory nano from hfsignals. I removed everything I did during build up, plus removed it from ubitx board, same problem.?
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Yes I remember this. Look carefully to see if you may have misinstalled the connectot. Mine had an extra plastic only pin, and is easy to misalign. Or missed solder somewhere.
Curt
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I fired up my ubitx V4 for the first time. When you turn the encoder, the frequency only changes by .050 the goes right back. I removed the encoder and used a jumper wire to try to simulate a encoder. Same problem. Then I removed Raduino, screen, and nano from the ubitx board. I supplied it with 12 volts and installed a 4.7 resistor on cw wires. I used a jumper wire again to simulate a encoder, same problem. Should I try to reload the nano, or do yall think the nano is bad??
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Re: Full throttle SSB distortion on 15 and 10m
I agree, 10W on 40 should be reference of modulation level.
I have not got my hands on a v5 and when I do I will report.
Raj
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At 26-02-19, you wrote: Getting 15W on 40 is pushing for excess... should be about 10.
And 2W is about all you get on 15 and 10 with out amp mods. Likely less.
More audio more power but there is a point of distortion as the power amp cannot do it.
Allison
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Raj vu2zap