Re: A minor bug in the ubitx circuit
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Re: ubitx v6, refactored code
Hi Farhan,
With your original code installed in my lash up test bed, and A6 connected to VCC through 4k7?the encoder and ptt inputs didn't work.
CAT did change the frequency and set the unit to TX perfectly.
I had thought perhaps it was due to finger trouble.
Look forward trying the new code in my test bed and await delivery of the specified TFT to explore further.
Thank you for all your excellent work on this new version.
73, Bob GM4CID
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Re: A minor bug in the ubitx circuit
Hi Ashhar,
Has this mod already done on the new V6 transceiver boards?
Joel
N6ALT
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Re: ubitx v6, refactored code
Rick, The radios come factory aligned. I am prepping something that will make bfo setting easier. The v6 code does need a bitmapped display to show the buttons. So back porting it to a 16x2 display maybe difficult. All the display specific routines just in the nanogui.cpp
On Wed 18 Dec, 2019, 7:57 PM Rick Green, < rtg@...> wrote: On Wed, 18 Dec 2019, Ashhar Farhan wrote:
> Jack and others,
> I have uploaded the refactored code to??.
> I will document this further in the next few days.?
>
? ?When you did the refactoring, did you incorporate the suggestion someone made
last week to create IFDEF conditionals so that the new code can support older
versions of the hardware?
? ?I have a v5 board with the standard 2-line display. Transmit seems to work
fine, as I was able to check it with a friend's spectrum analyzer, but receive
does not work at all. My friend suggested that it is so far out of calibration
that the signals are outside the filter passband.? Since I can't 'tune in to a
strong signal', I'm stalled at the first step in the calibration/alignment
procedure.? I'm wondering if the 'new improved' calibration procedure in the V6
firmware might include a workaround for this stumbling block?
I don't have access to a good signal generator, but I do have a working
frequency counter.? Is there a test point that you can point out to me where I
can sample the master (or derived) clock signals.? I could play with the
calibration values until the clock freq corresponds to the display freq.
--
Rick Green N8BJX
We, the People of the United States of America, reject the U.S. Supreme Court's
? Citizens United ruling, and move to amend our Constitution to firmly establish
? that money is not speech, and that human beings, not corporations, are persons
? ? ? ? ? ? ? ? ? ? ? ? entitled to constitutional rights.
? ? ? ? ? ? ? ? ? ? ? ?
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Re: TIA amps modification
Once AGC introduced, the noise levels might raise. At least I fear so.?
Sarma vu3zmv?
I' ve find it very interesting to use in the first stage of TIA - BF998 transistor. Detecting IF or audio can give AGC to the first and second amps. Changing control from 0 to 5.5 V on Grid 2
one can get 36 dB gain chainging of TIA and have at 5.5 V + 6 dB over the original amp.
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Re: FS: Unbuilt uBitx still available
Ken...What version is the uBitx?
On Wed, Dec 18, 2019 at 10:41 AM Ken Hansen < ken@...> wrote: Update, the Bitx40 is on its way to it's new home, the uBitx is still available at $100 shipped, ConUS.
Feel free to email me directly with any questions,
Ken, N2VIP
ken@...
> On Dec 15, 2019, at 18:40, Ken Hansen <ken@...> wrote:
>
> ?*** Note, resend or previous email with new lower prices ***
>
> Hello all,
>
> I've got two unbuilt/unattempted kits for sale. Both kits are as packed by HFSIGNALS.
>
> First up, an unbuilt Bitx40 from Dec. 2016, 2x speakers and an undrilled case from Amazon (blue & white) sold as kit, looking for $50 shipped ConUS. (Pictures of case available, contact me directly if interested.)
>
> Second, I have an unbuilt uBitx from Feb. 2019, asking $100 shipped ConUS.
>
> Both kits have original invoice from HFSIGNALS.
>
> PayPal accepted, email me direct with any questions.
>
> Thanks,
>
> Ken Hansen, N2VIP
> ken@...
>
>
>
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Re: FS: Unbuilt uBitx still available
Update, the Bitx40 is on its way to it's new home, the uBitx is still available at $100 shipped, ConUS.
Feel free to email me directly with any questions,
Ken, N2VIP
ken@...
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Show quoted text
On Dec 15, 2019, at 18:40, Ken Hansen <ken@...> wrote:
?*** Note, resend or previous email with new lower prices ***
Hello all,
I've got two unbuilt/unattempted kits for sale. Both kits are as packed by HFSIGNALS.
First up, an unbuilt Bitx40 from Dec. 2016, 2x speakers and an undrilled case from Amazon (blue & white) sold as kit, looking for $50 shipped ConUS. (Pictures of case available, contact me directly if interested.)
Second, I have an unbuilt uBitx from Feb. 2019, asking $100 shipped ConUS.
Both kits have original invoice from HFSIGNALS.
PayPal accepted, email me direct with any questions.
Thanks,
Ken Hansen, N2VIP
ken@...
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Re: raduino display for bitx 40.
Hi, ????? I should have been more specific in my wanted advert,,i am looking for a complete raduino for a bitx 40 i8 ve got lots of lcd screens,i also live in the uk but am willing to pay for any costs.regards and fingers crossed Dave G0AYD ..? ???
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Re: ubitx v6, refactored code
On Wed, 18 Dec 2019, Ashhar Farhan wrote: Jack and others,
I have uploaded the refactored code to?.
I will document this further in the next few days.?
When you did the refactoring, did you incorporate the suggestion someone made last week to create IFDEF conditionals so that the new code can support older versions of the hardware? I have a v5 board with the standard 2-line display. Transmit seems to work fine, as I was able to check it with a friend's spectrum analyzer, but receive does not work at all. My friend suggested that it is so far out of calibration that the signals are outside the filter passband. Since I can't 'tune in to a strong signal', I'm stalled at the first step in the calibration/alignment procedure. I'm wondering if the 'new improved' calibration procedure in the V6 firmware might include a workaround for this stumbling block? I don't have access to a good signal generator, but I do have a working frequency counter. Is there a test point that you can point out to me where I can sample the master (or derived) clock signals. I could play with the calibration values until the clock freq corresponds to the display freq. -- Rick Green N8BJX We, the People of the United States of America, reject the U.S. Supreme Court's Citizens United ruling, and move to amend our Constitution to firmly establish that money is not speech, and that human beings, not corporations, are persons entitled to constitutional rights.
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I' ve find it very interesting to use in the first stage of TIA - BF998 transistor. Detecting IF or audio can give AGC to the first and second amps. Changing control from 0 to 5.5 V on Grid 2
one can get 36 dB gain chainging of TIA and have at 5.5 V + 6 dB over the original amp.
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Re: Templates for China EF01 Electronic Plastic Shell Project Case for a BITX40
I used the same plastic case for both the BitX40 and the uBitX. I saw a very nice panel on one of the forums and contacted the builder. DH1AKY, who told me he used some free panel design software to create the panel, then printed it out. I did the same thing when I designed mine, and actually used the program's feature to print a mirror image, which I taped to the back of the plastic and used as a template to drill, dremel, and file the openings. The program came from this source, which offers it to encourage people buying metal panels from their company:
And attached are the panel files he sent me to use as a starting point, a .jpg a Dutch ham sent me that could also be printed out and used if you scale it right, and a picture showing how my front panel ended up. By the way, these are just basically flat pieces of plastic, so as long as the thickness fits the slot in the top and bottom covers you can use anything. I've seen some use aluminum sheet to fit the space or some other plastic, so don't be afraid to try it if you break one.
=Vic=
WA4THR
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Re: Brand new uBiTX v5.0 quality issue ?
These square pots have thin flat tapered pins and in my experience these are so easily broken should the item be twisted.I would suggest a skewed pot should be replaced preferably by a multiturn variety.This would give much greater control to setting the bias.Just
ensure any pot you fit will take the 100mA needed.
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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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Re: Brand new uBiTX v5.0 quality issue ?
Farhan, if the order of component placement is reversed so the trimpot goes in after the FET/heatsink, this will avoid any stresses on the trimpot. It will still be skewed, though, which may offend the sensibilities of some.
/ Gerry
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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?
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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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Joel Caulkins/N6ALT
George
Vic WA4THR
