Hi Dave,
I've used this 3rd party display module with success with radiuno on a ubitx, should fit the bitx40 as well:? It has a nice blue color with white text. The only thing I had to fix was to add a series resistor for the backlight as it's specified for 3.2V and not 5V. A 60ohm resistor in series with the backlight lead does the trick (see data sheet here:?? )
Best Regards Jonas - SM4VEY
Hi, ????? I have a bitx 40 but no display,i wonder if anyone can point me in the right direction ive tried to email hf igs but had no replies,does anyone have spare i can buy please.Regards Dave G0AYD QTHR AND . Thanks in anticipation.. ??
_._,_._,_
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ubitx v6, refactored code
Jack and others,
I have uploaded the refactored code to??. I will document this further in the next few days.?
If you want to understand ubitx code, start with ubitx.h. If you want to undersand the GUI, start with nanogui.h
The main routines that control the radio are in the INO file. You should know the ubitx block diagram well before you wade into this.?
- The nano gui is now a standalone library of less than 5K that can be used to write GUIs with the ILI9341 displays. It is easily ported to any display that supports bitmap graphics with a touch screen. A touch calibration routine is provided as well. - The morse reader is a compact code that encodes each morse letter as a single byte.? - The ubitx.h has a list of all the variables and declared functions.?
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Re: Templates for China EF01 Electronic Plastic Shell Project Case for a BITX40
As the production of BIX40 has stopped, perhaps no point in buying or fabricating an enclosre fot it, now.
Sarma vu3zmv
On Wed, 18 Dec 2019, 10:21 am Steve Sawicki via Groups.Io, <ab2et= [email protected]> wrote: Good Day Alex,
Yes I am the owner of a 30+ year old? well used "knibbling tool" that has many uses on aluminum in its career I do not see it having any? problems with plastic even in its dotage.
Unfortunately I am looking for a template that I can use to mark up the front and back plastic panels that are included with the EF01 case for drilling and knibbling.
Thanks for the reply.
Best regards.
Steve
AB2ET/4?
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Re: ?BITX & QRP labs 50W PA
That would work, but it will need band pass filters and the
associated band switching.? The same amp is available (unassembled)
for about 38 to 40 US dollars shipped.?
Paul K0ZYV?
toggle quoted message
Show quoted text
How about this?? ??
Alex Netherton W5ALX Buncombe County NC
On Thu, Dec 12, 2019 at 11:49 AM Arvo W0VRA via Groups.Io <arvopl= [email protected]> wrote:
Anybody considering using a QRP Labs 50W PA with their ?BITX?
There's no band switching yet.
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Re: Templates for China EF01 Electronic Plastic Shell Project Case for a BITX40
Good Day Alex,
Yes I am the owner of a 30+ year old? well used "knibbling tool" that has many uses on aluminum in its career I do not see it having any? problems with plastic even in its dotage.
Unfortunately I am looking for a template that I can use to mark up the front and back plastic panels that are included with the EF01 case for drilling and knibbling.
Thanks for the reply.
Best regards.
Steve
AB2ET/4?
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Re: Templates for China EF01 Electronic Plastic Shell Project Case for a BITX40
Tim,
I do not have, or easy access to any one that has a 3D printer, so far I have seen Ebay "printed" panels for the Ef01 for $25-27 plus shipping a bit much for a legacy BIT40 considering that the EF01 case is $10 with shipping .
BTW The EF01 has two plastic panels is there any way of converting the "printed" files to a two dimensional format that I can print out on paper the mark on the plastic panels?
Best Regards.
Steve
AB2ET/4
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On Tue, Dec 17, 2019 at 07:03 PM, Jack, W8TEE wrote:
Really don't know where the picture came from
It is funny. Yes amazing someone would leave that up. Hopefully it is far away from their house or other buildings.? Somehow seeing that, flashed the thought of next time a small amusement park is being torn down, maybe someone might try to cobble sections of the just slightly curved roller coster track into a bargain price antenna tower. Or better yet, one of the loops into a full wave or greater loop antenna. Hopefully someone has not already tried this. Tom, wb6b
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Re: ?BITX & QRP labs 50W PA
How about this??
?? Alex Netherton W5ALX Buncombe County NC
On Thu, Dec 12, 2019 at 11:49 AM Arvo W0VRA via Groups.Io <arvopl= [email protected]> wrote: Anybody considering using a QRP Labs 50W PA with their ?BITX?
There's no band switching yet.
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Hi Tom:
Really don't know where the picture came from...just saw it online and couldn't believe that someone would leave it up
Jack, W8TEE
On Tuesday, December 17, 2019, 9:59:29 PM EST, Tom, wb6b <wb6b@...> wrote:
On Tue, Dec 17, 2019 at 09:51 AM, Dave New wrote:
a 'disguise' cell phone tower
Looks like it was struck by a very powerful bolt of lightning. Tom, wb6b
-- Jack, W8TEE
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On Tue, Dec 17, 2019 at 09:51 AM, Dave New wrote:
a 'disguise' cell phone tower
Looks like it was struck by a very powerful bolt of lightning. Tom, wb6b
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On Tue, Dec 17, 2019 at 05:58 AM, Jack, W8TEE wrote:
and my kids didn't think I could put it up myself!
Is that an artist's work of art, or did someone buy a used tower on-line and this is what it looked like after being shipped to them? Tom, wb6b
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Re: Templates for China EF01 Electronic Plastic Shell Project Case for a BITX40
Interesting, but I have used a Radio Shack "knibbling tool"?
? (now from Amazon) and was able to cut steel with it. Aluminum cuts like butter, and plastic like air.
I used some PCB for mine. Or you can go to a hardware store and get some aluminum and make a new panel. The steel one is hard to work with.?
mike
AI4NS
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I have a bitx 40 but no display
Dave are you looking for just the LCD, which is a common 1602 5v unit, or the complete Raduino? --
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Re: Brand new uBiTX v5.0 quality issue ?
My V5 board which I received in July 2019 had exactly the same problem: RV2 or RV3 (don't rememember which one)
was bad.
Since no damage was visible, it took some time to find the cause for the low power output.
I first thought one of the IRF510 was dead and changed it, but this did not help.
After measuring the bias of both MOSFETS then, I noticed that one poti could only be adjusted to about 1,5V (i think). If you turned further,
the voltage just disappeared.
When i desoldered the poti, i noticed that one pin was broken. So I think that the path on which the wiper glided become uneven and the poti lifted
itself when turning to much to the left so that the contact of the torn pin got interrupted.
After exchanging the poti to a new one, it worked immediately :-)
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Hi, ????? I have a bitx 40 but no display,i wonder if anyone can point me in the right direction ive tried to email hf igs but had no replies,does anyone have spare i can buy please.Regards Dave G0AYD QTHR AND . Thanks in anticipation.. ??
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Fw: [JackAl] uBitx v6 compatibility?
George:
We don't have a V6 yet, but since we replace the entire radino board anyway, I would think it should.? Let's put it this way, I will give someone a JackAl board if they agree to test it on a V6 board and write up a timely short report on it for distribution here. If you want to test it, please tell me the kind of building/test equipment you have. (Al and I are starting the PCB's for the projects in the book and it's going to keep us busy for a while.)
Jack, W8TEE
On Tuesday, December 17, 2019, 4:17:30 PM EST, n2apb <n2apb@...> wrote:
Is JackAl compatible with the new v6 uBitx board?
73, George N2APB
-- Jack, W8TEE
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Yellow Brick Road?
-- ZL2DEX
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You mean "stairway to heaven"?
I drive by this every day:
It's at the Domino's world headquarters in Ann Arbor, MI, and is a 'disguise' cell phone tower.
73,
-- Dave, N8SBE
-------- Original Message --------
Subject: Re: [BITX20] New tower
From: "GM4CID" < gm4cid@...>
Date: Tue, December 17, 2019 9:15 am
To: [email protected]
Makes me think of the Led Zepplin song.
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Re: ?BITX & QRP labs 50W PA
Mark,
For SSB high idle current are not a factor (unless unrealistically high) as
the average current is likely going to be higher and if heat is an issue
than larger heatsinks or fans are the solution.
Keep in mind speculation is not measurements.? For 50W out?
your input DC at 20V has to be in the range of 70 to 90W
assuming 70 to 50% efficiency.? The difference between output
power and input power is resulting in heat.? Power amplifiers?
above the milliwatt range are all concerned with heat and
managing it.
I have used the same heatsinks for the QRPLabs 10W SSB amp?
at higher voltages and power there is a lot of heatsink there.? Running
bias in the 100Ma per device range is fairly trivial at 4W.? Even at 250ma
we are at under 10W.? ? Considering at 50W out the likely current? is
3.6A at 20V and converting 30% of that to heat for classC and much
Less (typical is 55%, average) for class AB1.
For SSB running to 50W peak the average is likely closer to 20W
and the heat load is maybe near 20W average as well assuming
50% efficient and that would be low.? So heat should not be an issue
with supplied heatsinks and reasonable airflow (no sealed chassis)
and not over driven.
It should be noted that for SSB the peak power is around 50W the
average will be lower and should be to avoid splatter from clipping.
That means the SSB drive power should be lower than CW.
Allison
---------------------------------
No direct email, it goes to bit bucket due spam
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Re: ?BITX & QRP labs 50W PA
Allison, great information!? ?That sheds a great deal of light on the subject, thanks!
On Tue, Dec 17, 2019 at 11:26 AM ajparent1/kb1gmx < kb1gmx@...> wrote: Since I run an EBY amp since 2006 you must have mis-read.? In the files section
I've even posted his articles back around 2010 and copied to this iteration years
ago. Still there.
The ubitx is not run that low, spec is 100ma per.?
The irf510 like all fets has a considerable hook at low gate to source voltages.
If the gate voltage is platted against the drian current the linear window is above
100ma and below saturation or about 4A.? Below that in the low end under 100ma?
drain current he gate voltage is not linear at all from start of conduction to the?
100ma range and? that makes for very non linear near cross over.? Class AB1
is more like 80-150ma but it is very toplology dependent.
His (WA2EBY) minimum was 50 ma per device for CW and testing put it higher
near 100ma per device for SSB to get a decent IMD at 28V.? I find mine
comfortable at 125 ma per device and the two tone testing is good enough at
about -28dbc.? However that design has the features needed for linear operation
including independent device bias,??current sourcing transformer for the drains
and large ferrite for the output transformer.
At 100ma per you only talking a standing power of 2.8W at 28V per device,
if that gets warm the heatsink is inadequate.?
So saying a specific current, especially low under 100ma, is inadequate
for linear use without testing questionable.? Especially for an amp designed
for class C use.? I do not say it cant be linear but at low bias its highly unlikely.
I have one on the way so testing will happen.
Allison
--
---------------------------------
No direct email, it goes to bit bucket due spam
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Alex Netherton