A small comparaison between Ubitx, HW101 Heathkit and a 51S1 Collins.
Ubitx: not too bad....
73
Jean-Luc
F6HOY
|
Just for fun for 15€... On my first Bitx40 i added an analog smeter with simple circuit on audio line and a 500 microA vu-meter. Al was fine except that without AGC it is just a signal level. On my Ubitx i add a Chinese Audio Vu-meter that is better... Around 15€ with a circuit and 2 vu-meters. And with the input circuit it is just like an AGC. For fun i have nice warm lights.. And for the same price you have another Vu-meter and a second input.... sevral shops in China. For axample: (the hole in front panel is not perfect. I am going to make a new panel...)    Radio is magik ! 73 Jean-Luc F6HOY
|
Re: Bitx40 75KHz Spurious, How to solve it.
#bitx40
Dear Jerry aa1of,
The modification for suppress the spurious of this time is as follow.
I hope this would be useful for you.
?
1) Add 3.3uF electrolytic capacitor and 0.1uF x 2 bypass capacitor to VCC line of Arduino board =>PIC1-1a? PIC1-2a
2) Insert high frequency choke of about 100 uH in the power line of Arduino =>PIC2a
3) Connect the minus line of power supply line to the ground =>PIC3-1a ?PIC3-2a
4) Connect the minus line of BITX40s to the ground
5) Add 0.1 uF ¡Á 2 bypass capacitor to VDD of BITX 40 board=>PIC5a
6) To prevent common mode noise, add 0.01uF x 2 bypass capacitor to the power connector=>PIC6a
73!
Akira
JJ1EPE
|
Re: #ubitx-help Strong Audio Tones in and outside audio receive passband
#ubitx-help
Hi Jack,
I haven't seen other tested options and if my memory serves me right, that worked for two units.
Not a fun exercise in my opinion.
Good luck,
73, John
|
Great idea Tom, as this frees up IO pins on the main Nano for more controls.
I also used a 2nd Arduino as I2C slave for other purposes (SWR and supply voltage measures) but didn't think of connecting the 2nd unit as a display back-pack.
Excellent and very cost effective.
73, John (VK2ETA)
|
This is ingenious.? With the low price
of arduino clones, this makes a lot of sense.
Mike ZL1AXG
On 4/07/18 12:50 AM, Tom, wb6b wrote:
Hi,
I want to expand the amount of digital and analog I/O pins
available to add enhancements to my uBITX.
To do that I created a Smart LCD Backpack to replace the commonly
found ones on the inexpensive 2x16 and 4x20 I2C displays found on
eBay and Amazon.
I uploaded a library to GitHub that allows you to program a
Arduino Nano to emulate the common I2C to parallel backpack used
on the I2C displays. The Smart I2C Backpack, additionally, allows
you to read and write the analog and digital pins on the Smart I2C
Display Backpack.
The package includes a interface library that you include in your
code to interface with the Extended I/O functionally. Also
included are two example Sketches. One is the code you program
into the Smart Backpack. The other is a demo/test program you
program into another Arduino and connected via the I2C buss to the
Smart Backpack Display.
The Smart Display Backpack should work with firmware using
standard I2C LiquidCrystal drivers such as the?KD8CEC firmware.
The code uses the following libraries:
The are all installable from the Arduino library manager, the
GitHub URLs are just for reference.
SoftTimer.h ?//
Also requires:
LiquidCrystal_PCF8574.h
I believe these are part of the base Arduino software install.
Wire?
LiquidCrystal
Hope others enjoy this new display and I/O expander.?
Here is the link to the code.
|
Re: Easy, Inexpensive Cooling Fan, Excelway Case
Well the good news is that is not how
it works.? It works in semi-break-in mode, where the TX mode only
goes back to RX with a reasonable pause in sending characters
(adjustable in the menu).?? You should be fine in connecting the
fan to the TX voltage line.
Mike ZL1AXG
On 4/07/18 9:42 AM, Arvo KD9HLC via Groups.Io wrote:
On Tue, Jul 3, 2018
at 06:46 am, Gary Anderson wrote:
?I would think that during a CW transmit, that the fan
should remain On, and not switch On/Off with every dit and dah.?
Oh, brother, I'd not thought of that either.? Is that how this rig
works in CW mode?? Yikes.
|
Re: experience with Sunil VU3SUA's enclosures
#ubitx
Thank you for the update, Sunil!
73 Mike KK7ER
|
Oh, that reminds me.
Scared the crap out of me to have to walk through the barn on my way to?
the outhouse after dark when I was about 5.
Perhaps I had seen The Wizard of Oz or something,
but specifically remember lions as a major source of fear.
All right, we must bring this back on topic.
Too bad Dorthy didn't have a Bitx with her?
so she could reassure the folks back home that she was ok.
Though come to think of it, I guess she wasn't ok,
and it really would not have been of much use to her...
Jerry, KE7ER
toggle quoted message
Show quoted text
On Wed, Jul 4, 2018 at 08:12 pm, Arv Evans wrote:
Most old timers have several war stories regarding how things were in the bad old
days before computers and toilets had been invented.? 40 years from now today's
youngsters will be telling their own war stories about how bad things were in the
early BITX days.? They too will feel justified in off-topic posts because it is part
of their own history.?
|
Most old timers have several war stories regarding how things were in the bad old
days before computers and toilets had been invented.? 40 years from now today's
youngsters will be telling their own war stories about how bad things were in the
early BITX days.? They too will feel justified in off-topic posts because it is part
of their own history.?
_._
On Wed, Jul 4, 2018 at 8:40 PM Jack Purdum via Groups.Io <jjpurdum= [email protected]> wrote:
When I was doing my dissertation research in the late 60's, I too used the 80-column punch cards on an IBM 360. I was doing a lot of stepwise multiple regression, but I remember dropping my cards into the hopper and walking over to the printer just as my output was being spooled out. I finished up my research where I took my first teaching job, which only had an IBM 1130. I was still doing some final runs and dropped my cards into the hopper and walked over to the printer to catch my output.
Nothing...
I told the systems tech that the system crashed and I didn't get my printout. He glanced over at the main console and said: "Everything's fine...it's thinking...
Jack, W8TEE
Ah!! The days of the DEC 20/60 and VAX11/740 with IBM 29 card punches!! And the joy of COBOL!
Rhys?
GW0DIV?
|
When I was doing my dissertation research in the late 60's, I too used the 80-column punch cards on an IBM 360. I was doing a lot of stepwise multiple regression, but I remember dropping my cards into the hopper and walking over to the printer just as my output was being spooled out. I finished up my research where I took my first teaching job, which only had an IBM 1130. I was still doing some final runs and dropped my cards into the hopper and walked over to the printer to catch my output.
Nothing...
I told the systems tech that the system crashed and I didn't get my printout. He glanced over at the main console and said: "Everything's fine...it's thinking...
Jack, W8TEE
On Wednesday, July 4, 2018, 5:04:15 PM EDT, gw0div@... via Groups.Io <gw0div@...> wrote:
Ah!! The days of the DEC 20/60 and VAX11/740 with IBM 29 card punches!! And the joy of COBOL!
Rhys?
GW0DIV?
|
When I was attending USF back in the 70s, the system and four
mainframe printers (the old ultra-high-speed drum printers) were
in the room where we submitted our punch card stacks.? They
routinely had several huge packing-crate boxed of tractor-feed
paper behind each printer - all connected together, and it would
print out a page (lots of text) in a couple of seconds or so.? One
day I saw one of the funniest sights I've ever seen connected to
computers - somehow all four printers had been put into full
page-feed mode.? The paper was flying vertically out of the top of
the printer and hitting the ceiling above it (all four printers),
first it would pile up against the ceiling and then fall forward,
then backward.? The sysop for that day was in the back of the room
running around in a little circle while shouting "Turn it off!?
Turn it off!!! Turn it off!!!" - and although they had everything
shut down in less than a minute - the area behind the counter was
waist deep in loose printer paper.? It took them (as I remember)
at least a day to get everything cleaned up and back in
operation.? (We had to come back a few days later with our cards.)
I had one of those printers, along with a mainframe given to me
several years ago, but could never find the right adapter or
terminal to use them... and the Florida humidity got to them and
ruined them.? I forget all the specs now, but it had for it's day
a huge hard drive, a fast high-capacity platter drive, and SCSI
connectivity (except you couldn't program through the SCSI port).
On 07/04/2018 04:49 PM, Clark Martin
wrote:
toggle quoted message
Show quoted text
I started with a 110 baud teletype (also in high
school). ?We learned BASIC on it. ?Once I learned ¡®C¡¯ I never
went back to BASIC.
I don¡¯t recall getting reams of paper due to Fortran
errors. ?I remember that you could get a very large stack of
paper if you botched the first character (carriage control). ?It
would feed the paper at maximum speed and only the CARRIAGE STOP
button would stop it. ?It was always something to see the
operator come flying out of their seat to reach over the printer
and blindly slap the CARRIAGE STOP button (inconveniently
located on the other side of the printer).
On Jul 4, 2018, at 12:53 PM, Robert D. Bowers
< n4fbz@...>
wrote:
Talk about bringing back
memories!
I learned on a 300baud
teletype in high school - my school was the second in the
nation (so I understand) to offer computer programming,
and I took it the second year it was offered.? We had
access to the school system's mainframe through the
teletype.? We also got introduced to our first computer
game - "Star Trek".
Then I progressed to Fortran
on punch cards.? And waited for the (hopefully thin) stack
of printout.? (For those who don't understand, if you did
the job right, you got a very thin stack of fanfold
paper.? If you made a mistake in your programming, you got
a big pile with all of the messages and errors caused by
your mistake.)
Back on Topic - I'd wondered
why Arduino code seemed familiar and why I had little
problem figuring out the routines I needed.? I'd studied C
on my own several years ago.
|
That's why you see "Hijacked" in the subject line.
Jack, W8TEE
On Wednesday, July 4, 2018, 8:27:05 PM EDT, Robert Alexander <ralexander22@...> wrote:
I don¡¯t see anything about the BITX or UBITX radios in this thread. ? 73 Robert (N5RHA) ? ? ?
From: [email protected] <[email protected]> On Behalf Of Jerry Gaffke via Groups.Io
Sent: Wednesday, July 4, 2018 2:06 PM
To: [email protected]
Subject: Re: [BITX20] Hijacked: C vs C++ ? Forty years ago, programming might involve typing into an ADM-3 terminal
with a 1200 baud? UART connection to a Vax-11/780 under BSD Unix.
If you were lucky, could be worse.
You could have been submitting decks of punched cards in Cobol?
to some batch system.
With several dozen other programmers sharing the same VAX,?
might take a minute or two after submitting name and password before?
you were fully logged in and had a shell prompt.
So the sysadmin would generally have the fortune cookie program dump
some text to the screen for you to ponder while twiddling thumbs.
Here's another example, chosen from thousands: 'Twas midnight, and the UNIX hacks Did gyre and gimble in their cave All mimsy was the CS-VAX And Cory raths outgrabe. ? "Beware the software rot, my son! The faults that bite, the jobs that thrash! Beware the broken pipe, and shun The frumious system crash!"
OK, now we're totally hijacked.
Excellent name for the thread!
Jerry
On Wed, Jul 4, 2018 at 09:29 am, Arv Evans wrote:
For those who did not understand your reference to Fortune Cookies.
|
Re: #ubitx-help Strong Audio Tones in and outside audio receive passband
#ubitx-help
Is replacing the Arduino?still the easiest way to fix the 13kHz tone in the headphones? Jack KG4GJY 
|
I don¡¯t see anything about the BITX or UBITX radios in this thread. ? 73 Robert (N5RHA) ? ? ?
toggle quoted message
Show quoted text
From: [email protected] <[email protected]> On Behalf Of Jerry Gaffke via Groups.Io
Sent: Wednesday, July 4, 2018 2:06 PM
To: [email protected]
Subject: Re: [BITX20] Hijacked: C vs C++ ? Forty years ago, programming might involve typing into an ADM-3 terminal
with a 1200 baud? UART connection to a Vax-11/780 under BSD Unix.
If you were lucky, could be worse.
You could have been submitting decks of punched cards in Cobol?
to some batch system.
With several dozen other programmers sharing the same VAX,?
might take a minute or two after submitting name and password before?
you were fully logged in and had a shell prompt.
So the sysadmin would generally have the fortune cookie program dump
some text to the screen for you to ponder while twiddling thumbs.
Here's another example, chosen from thousands: 'Twas midnight, and the UNIX hacks Did gyre and gimble in their cave All mimsy was the CS-VAX And Cory raths outgrabe. ? "Beware the software rot, my son! The faults that bite, the jobs that thrash! Beware the broken pipe, and shun The frumious system crash!"
OK, now we're totally hijacked.
Excellent name for the thread!
Jerry
On Wed, Jul 4, 2018 at 09:29 am, Arv Evans wrote:
For those who did not understand your reference to Fortune Cookies.
|
Re: Who has uBITX with Nextion display in action pictures ?
Joe:? I found the files in the 'files' section of this board.? Works great!?
Many thanks to you and Allen!
73, Bill
|
Ah!! The days of the DEC 20/60 and VAX11/740 with IBM 29 card punches!! And the joy of COBOL!
Rhys?
GW0DIV?
|
Re: RFI from uBitx TX after AGC and other mods installed
Glad to help in solving the problem. Regards to all Lawrence
On Tue, Jul 3, 2018 at 6:21 AM, Kees T <windy10605@...> wrote: Thanks guys, Don and I appreciate it.?
Glad to see so much "building enthusiasm".?As of today we're up to 676 AGC kits and/or Click kits ordered?and?shipped.
73 Kees K5BCQ
----------------------------------------------------------------------------------------------------------
New Topic.............
I'm just about ready to make a pass on an OLED display, Nano microcontroller, and 2x AD8307s mWattmeter/SWR device.??So far, it's all mounted on a 50mm x 50mm board
(2x2 or qty 4 on a 100mm panel) including the Stockton bridge, BNC/SMA connectors, Nano, and header attached OLED. Still looking for firmware to run.
?
?
|
I started with a 110 baud teletype (also in high school). ?We learned BASIC on it. ?Once I learned ¡®C¡¯ I never went back to BASIC.
I don¡¯t recall getting reams of paper due to Fortran errors. ?I remember that you could get a very large stack of paper if you botched the first character (carriage control). ?It would feed the paper at maximum speed and only the CARRIAGE STOP button would stop it. ?It was always something to see the operator come flying out of their seat to reach over the printer and blindly slap the CARRIAGE STOP button (inconveniently located on the other side of the printer).
toggle quoted message
Show quoted text
On Jul 4, 2018, at 12:53 PM, Robert D. Bowers < n4fbz@...> wrote:
Talk about bringing back memories! I learned on a 300baud teletype in high school - my school was the second in the nation (so I understand) to offer computer programming, and I took it the second year it was offered.? We had access to the school system's mainframe through the teletype.? We also got introduced to our first computer game - "Star Trek".
Then I progressed to Fortran on punch cards.? And waited for the (hopefully thin) stack of printout.? (For those who don't understand, if you did the job right, you got a very thin stack of fanfold paper.? If you made a mistake in your programming, you got a big pile with all of the messages and errors caused by your mistake.) Back on Topic - I'd wondered why Arduino code seemed familiar and why I had little problem figuring out the routines I needed.? I'd studied C on my own several years ago.
|
Talk about bringing back memories!
I learned on a 300baud teletype in high school - my school was
the second in the nation (so I understand) to offer computer
programming, and I took it the second year it was offered.? We had
access to the school system's mainframe through the teletype.? We
also got introduced to our first computer game - "Star Trek".
Then I progressed to Fortran on punch cards.? And waited for the
(hopefully thin) stack of printout.? (For those who don't
understand, if you did the job right, you got a very thin stack of
fanfold paper.? If you made a mistake in your programming, you got
a big pile with all of the messages and errors caused by your
mistake.)
Back on Topic - I'd wondered why Arduino code seemed familiar and
why I had little problem figuring out the routines I needed.? I'd
studied C on my own several years ago.
On 07/04/2018 03:05 PM, Jerry Gaffke
via Groups.Io wrote:
toggle quoted message
Show quoted text
Forty years ago,
programming might involve typing into an ADM-3 terminal
with a 1200 baud? UART connection to a Vax-11/780 under BSD Unix.
If you were lucky, could be worse.
You could have been submitting decks of punched cards in Cobol?
to some batch system.
With several dozen other programmers sharing the same VAX,?
might take a minute or two after submitting name and password
before?
you were fully logged in and had a shell prompt.
So the sysadmin would generally have the fortune cookie program
dump
some text to the screen for you to ponder while twiddling thumbs.
Here's another example, chosen from thousands:
'Twas midnight, and the UNIX hacks
Did gyre and gimble in their cave
All mimsy was the CS-VAX
And Cory raths outgrabe.
"Beware the software rot, my son!
The faults that bite, the jobs that thrash!
Beware the broken pipe, and shun
The frumious system crash!"
OK, now we're totally hijacked.
Excellent name for the thread!
Jerry
On Wed, Jul 4, 2018 at 09:29 am, Arv Evans wrote:
For those who did not understand your reference to
Fortune Cookies.
|
JEAN-LUC F6HOY
