Date   
Re: Hijacked: C vs C++

Jack, W8TEE
 

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 

Re: Hijacked: C vs C++

Arv Evans
 

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=yahoo.com@groups.io> 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

On Wednesday, July 4, 2018, 5:04:15 PM EDT, gw0div@... via Groups.Io <gw0div=btinternet.com@groups.io> wrote:


Ah!! The days of the DEC 20/60 and VAX11/740 with IBM 29 card punches!! And the joy of COBOL!

Rhys 
GW0DIV 

Re: Hijacked: C vs C++

Jerry Gaffke
 

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


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. 

Re: experience with Sunil VU3SUA's enclosures #ubitx

Mike KK7ER
 

Thank you for the update, Sunil!

73 Mike KK7ER

Re: Easy, Inexpensive Cooling Fan, Excelway Case

Mike Woods
 

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.


--
Mike Woods
mhwoods@...

Re: Smart Analog/Digital I/O Expansion and LCD Display for the uBITX. #firmware #ubitx #nano #radiuno

Mike Woods
 

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.
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.
https://github.com/mountaintom/SmartLCDandIOexpander_I2C








--
Mike Woods
mhwoods@...

Re: Smart Analog/Digital I/O Expansion and LCD Display for the uBITX. #firmware #ubitx #nano #radiuno

John (vk2eta)
 

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)

Re: #ubitx-help Strong Audio Tones in and outside audio receive passband #ubitx-help

John (vk2eta)
 

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

Re: Bitx40 75KHz Spurious, How to solve it. #bitx40

jj1epe@...
 

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 × 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

Analog Smeter #smeter

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.
http://www.f6hoy.com/bitx/

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: https://fr.aliexpress.com/item/2-Pcs-VU-Panneau-M-tre-Chaud-Back-Light-Enregistrement-Durable-Pilote-Conseil-Module-C-bles/32845258857.html?spm=a2g0w.10010108.1000014.4.7f4136c0wSoVBV&scm=1007.13338.98644.000000000000000&scm_id=1007.13338.98644.000000000000000&scm-url=1007.13338.98644.000000000000000&pvid=52300d9e-a326-461a-bc52-4ef4dd0f467e&_t=pvid%3A52300d9e-a326-461a-bc52-4ef4dd0f467e%2Cscm-url%3A1007.13338.98644.000000000000000

(the hole in front panel is not perfect. I am going to make a new panel...)




Radio is magik !
73
Jean-Luc
F6HOY

Ubitx versus other rigs

JEAN-LUC F6HOY
 

A small comparaison between Ubitx, HW101 Heathkit and a 51S1 Collins.

Ubitx: not too bad....

https://www.youtube.com/watch?v=bmH6Ow_DOiU&feature=youtu.be

73
Jean-Luc
F6HOY

BITX QSO Afternoon/Evening, Sunday, July 8, 3PM & 7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere.

John P
 

BITX QSO Afternoon/Evening, Sunday, July 8, 3PM & 7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere.

Join us as we make contacts with our BitX-40s or uBitXs or anything else on 7.277 MHz in 40 meters!

This is a worldwide event for BitX40 (and other QRP) stations starting at 3PM and 7pm in each time zone. To participate, call CQ BitX on Sunday, starting at 3PM and/or 7PM your local time. The BitX QSO Night continues through the evening and conditions usually improve after sunset, so it is worthwhile to participate later in the evening.

Suggested Best Operating Practices:

Work at QRP power levels unless conditions require more power.
Call and listen for CQ BITX on the hour and every quarter hour.
It is helpful if you call CQ BITX with your callsign, name and location. 
Repeat your callsign a number of times during your CQ BITX and during QSO's.
Start a QSO by confirming the callsign, location, name and signal report of the other operator.
Say the callsign, name and location of the other operator so others can hear.
If the frequency is busy, avoid long conversations.
After your initial QSO is complete, ask if there are any other stations who would like to contact.

Report your QSO's, discuss propagation, noise, signal reports, audio reports, antenna type, etc. in this thread.

This is an undirected, scheduled event.  The BITX QSO Night relies on you to call CQ BITX to initiate contacts with other stations, so warm up that final and transmit a few calls on Sunday evening.  Talk to you then!
--
John - WA2FZW

Re: Smart Analog/Digital I/O Expansion and LCD Display for the uBITX. #firmware #ubitx #nano #radiuno

Tom, wb6b
 

Thanks very much for the kind compliments. I hope this project turns out to useful to others on this forum. 

I tried to make it relatively easy to use, and easy for the user to add custom functionally that can offload some work from the uBITX to the backpack.

As this is the first release, I hope there are only very minimal hiccups in the code.

Tom, wb6b

Re: Went Dead

Bill Watkins
 

Replaced both IRF510 with lead-free version.  Used insulator kit.  Installed fan.  Did PA bias. Up and running again. Thanks for all suggestions. 

Bill
K0WHW

Re: Analog Smeter #smeter

w4rjp
 

Jean-Luc,

Thanks for sharing your BitX modifications, especially the Analog S meter. I collect D'Arsonval meters and like the retro look for my radios.

73, Bob W4RJP

Nextion display bezel

Gary Hanson
 

Art Olson,

When ordering a bezel for the Nextion display, I noticed that 3D Hubs offered 8 different types of plastic options. I wondered what you used?


Gary Hanson

Re: Completed my QCX #ubitx

WD8WV
 

It is a 2.8 Nextion screen.  Thanks!
--
Judd, WD8WV

Re: Completed my QCX #ubitx

WD8WV
 

Updated picture.

I added a momentary button just right if the VFO to access the menu options so I wouldn’t have to push the VFO, which I still can.  Also added a folding kickstand so when on the bench the front is elevated.
--
Judd, WD8WV

Re: Analog Smeter #smeter

Dennis Zabawa
 

Re: Completed my QCX #ubitx

Jack, W8TEE
 

Very nice!

Jack, W8TEE

On Thursday, July 5, 2018, 8:27:52 AM EDT, WD8WV <juddie.d.burgess@...> wrote:


Updated picture.

I added a momentary button just right if the VFO to access the menu options so I wouldn’t have to push the VFO, which I still can.  Also added a folding kickstand so when on the bench the front is elevated.
--
Judd, WD8WV