Date   
Re: directions for using ubitx memory manager

Nigel G4ZAL
 

Re: TDA2822 fried

Christopher Miller
 

Its not a theory. Farhan clearly admitted they lost 500 units to the audio amp ics being garbage. 

Chris

Re: TDA2822 fried

Joe Puma
 

More like a thesis then a theory 


On Apr 12, 2018, at 4:22 PM, Christopher Miller <djmalak2k6@...> wrote:

Its not a theory. Farhan clearly admitted they lost 500 units to the audio amp ics being garbage. 

Chris

GA QSO PARTY - Test your BITx to work SSB QRP this weekend

Jim Stafford W4QO
 

This is a way to test your rig(s) and antennas....
      GA QSO PARTY!


2 more days until the Georgia QSO Party!!!  April 14th & 15th

With the Masters Golf tournament now in the record books,
the next springtime contest is just 2 days away!   Two sessions:

Saturday 2 PM to midnite EDT and Sunday 10 AM to 8 PM EDT.
Almost all 159 counties will be active.  QRP awards galore!
 
The GA QSO party is almost the largest in the country with 200
operators in the party.  Go to the link at the bottom for full info. 
The North Fulton club alone will field nearly 60 ops.

FYI: The North Fulton Amateur Radio League is operating 10 special

event callsign stations to celebrate 40 plus years of amateur radio service.
N4N - N4F - N4A - N4R - N4L
K4N - K4F - K4A - K4R - K4L
Work 5 of these stations with the suffixes to spell "NFARL" using any mix
of "N" or "K" prefixes and earn a "Worked All NFARL" certificate!
Stations may be worked in any mix of CW and SSB on any band.  Set your
own goals - CW only, SSB only, 40M only, etc.  That's up to you.

For a quick summary of the GA QSO PARTY, go to wa7bnm's page:
http://www.contestcalendar.com//weeklycont.php#8364
For more information and details about the GQP,
please visit the webpage   http://www.georgiaqsoparty.org/
4 LETTER abbreviations for GA Counties is on page:
http://www.ku8e.com/GQP/gqpctylist.html

and the NFARL webpage http://nfarl.org/GA_QSO_Party/GQP.html

Need logging software? http://n3fjp.com/stateqsoparty.html
Go to GA logging section.  It's FREE for 30 QSOs and a deal for
unlimited use!
Jim W4QO

Sale (updated) of unopened BITX40 #bitx40help #bitx40 #parts #radiuno #ubitx

VE7WQ
 

Updated sale,
I'm selling due to my changed workload a recently arrived, unopened box of
BITX40 with Raduino for $39 free shipping to US and Canada.
Offering it here first, before I put it up for sale on eBay.
Please send an e-mail, if interested.

Re: ubitx keyer

Al Woodhull
 

Excuse my adding to this thread late in the game...

I just got my ubitx going within the last week.  I'm a CW man and really want to use it for CW, but trying to key it is really awkward. In
particular, it seems that when I first press the key, shifting it into CW transmit mode as well as starting beginning a transmission, it
generates an extra dit at the start, so my intended first dit or dah element comes out as didit or ditdah.

I think I read someone's post that suggested irregular keying might be due to dirty key contacts, but I tried this with two straight keys
that I have used regularly with other rigs with no problem. Also I find the same thing happens when I use a homebrew keyer 
(Arduino-based!) that uses an open collector transistor as the keying element - I'm quite sure this has no switch-bounce problem.

I think I have seen suggestions for hardware changes as well as firmware changes. It sounds like the KD8CEC firmware should
probably be the next direction to pursue.  Is that likely to do away with my CW problem, and will it also require hardware changes?

73, Al, N1AW

Re: Baofeng Microphones

Glenn
 


I fitted a standard 3.5 and 2.5mm jacks at the rear of my uBITX build.  NOTE the 3.5mm jack needs to be insulated from the chassis to work as the PTT is connected to what is normally 'ground' on a stereo socket.
I used some plastic washers to insulate it.
glenn
vk3pe




Re: Sale (updated) of unopened BITX40 #bitx40help #bitx40 #parts #radiuno #ubitx

VE7WQ
 


Thank you all,  it was sold, as soon as I posted it.
George

BITX Clone

Arv Evans
 

Re: ubitx keyer

Rod Davis
 

Al,

The KD8CEC firmware fixes many issues, and it will likely fix your keyer woes.
It does not require a hardware change, and if you do not like it, it is easy to go back to factory firmware.

Here is a link to a user manual that answers many first-time user questions:

https://groups.io/g/BITX20/topic/kd8cec_software_user_manual/16886866?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,40,16886866

Regards,

Rod KM6SN

(a CW man also; part of the crew that won 1995 ARRL World DX contest,
multi-two CW as 6E2T)


On 04/12/2018 04:21 PM, Al Woodhull via Groups.Io wrote:
Excuse my adding to this thread late in the game...

I just got my ubitx going within the last week.  I'm a CW man and really want to use it for CW, but trying to key it is really awkward. In
particular, it seems that when I first press the key, shifting it into CW transmit mode as well as starting beginning a transmission, it
generates an extra dit at the start, so my intended first dit or dah element comes out as didit or ditdah.

I think I read someone's post that suggested irregular keying might be due to dirty key contacts, but I tried this with two straight keys
that I have used regularly with other rigs with no problem. Also I find the same thing happens when I use a homebrew keyer 
(Arduino-based!) that uses an open collector transistor as the keying element - I'm quite sure this has no switch-bounce problem.

I think I have seen suggestions for hardware changes as well as firmware changes. It sounds like the KD8CEC firmware should
probably be the next direction to pursue.  Is that likely to do away with my CW problem, and will it also require hardware changes?

73, Al, N1AW

Re: ubitx keyer

Chris Clarke G3SQU
 

Al

The KD8CEC v1.061 firmware has completely cured my straight key problem, which was very much like yours. I had had to stop using my favourite straight key but can use it again now. There was an occasional residual problem with the v1.01 firmware, but v1.061 has resolved that for me.

For improved CW operation the only change I have felt worth making with v1.061 is to edit the Menu sequence in the ubitx_menu.ino file so that RIT is the first menu item

case 0 :
        menuRitToggle(btnState);
        break;

I find this makes CW operation much easier: tapping the menu button twice toggles RIT with little need to use the encoder beyond tuning (it is even easier if you parallel a separate push-button switch across the encoder switch so that there is no risk of inadvertently rotating the encoder when selecting a menu item).

NB if, like me, you will be running the Arduino IDE under Linux in order to upgrade the firmware, you will need to change the line in the ubitx_cpp file that reads #include <Arduino.h> to read #include <arduino.h>  or the sketch will produce a compile error.

73 Chris
G3SQU

Re: ubitx keyer

Chris Clarke G3SQU
 

Sorry, read ubitx_wspr.cpp in the the above

Chris
G3SQU

Re: W8TEE TFT and uBitx

Tony Frey
 

Hi Jack, 

Thank you for tonight’s presentation on the Arduino.  I have had an Ubitx on order since the end of February, if I wanted to get a head start of the the board your working on, what would you recomend I source to prep?

Thanks, Tony Frey, KE4MHP

Re: W8TEE TFT and uBitx

Robert King
 

Get y our chassie ready. I planned for plastic kit boxes. Bought 2 different sizes. My kit arrived and once i printed the 12 pages i found out it is reccomended to use metal. I went with an RCI-2950 Case. Plenty of room for radio and air flow.
Best of luck, KM6BNY

Re: Baofeng Microphones

MVS Sarma
 

Perhaps we can mount a rectangular  insulating piece over which we can mount these jacks. For example Pratap (vu2pop) from Bangalore, India, made a small biscuit pcb mouting it on bottom of the enclosre. the jacks are soldered (pcb type) on to it. and the front panel has silghtly larger drills that insulate the mic and speaker jacks.

He has ready enclosures for ubitx, i suppose.


Regards
MVS Sarma
 

On Fri, Apr 13, 2018 at 5:19 AM, Glenn <glennp@...> wrote:

I fitted a standard 3.5 and 2.5mm jacks at the rear of my uBITX build.  NOTE the 3.5mm jack needs to be insulated from the chassis to work as the PTT is connected to what is normally 'ground' on a stereo socket.
I used some plastic washers to insulate it.
glenn
vk3pe





Re: uBITX shipping time

a.vision
 

Hi ordered my ubitx on 15th February and received shipping notice yesterday look forward to delivery now shipped via India post.The only thing that I found dissapointing is that people who ordered their ubitx after me were being shipped before me . 







Sent from Samsung tablet


-------- Original message --------
From: "Don N9GOD via Groups.Io" <n9god@...>
Date: 12/04/2018 20:01 (GMT+00:00)
To: BITX20@groups.io
Subject: Re: [BITX20] uBITX shipping time

Looks like shipping is catching up. My ubitx ordered Mar 1 shipped today Apr 12
--
check http://n9god.com for electronics publication in English and Foreign formats

Re: Baofeng Microphones

 

Glen, 

See how the two boxes are not square?

If you put the tabs 180 degrees facing away from each other the two boxes will square up tight to each other, and the plugs will line up perfectly.

That’s if those are similar to mine, and they do look like it. 

I have thought about a thin acrylic of some sort with just enough thickness and cut a small oval or rectangle in the metal case to accommodate the insulated jacks.  

Right now mine are just taped together, and I have strain relief on the radio side.  

Craig
KM4YEC


On Apr 12, 2018, at 7:49 PM, Glenn <glennp@...> wrote:


I fitted a standard 3.5 and 2.5mm jacks at the rear of my uBITX build.  NOTE the 3.5mm jack needs to be insulated from the chassis to work as the PTT is connected to what is normally 'ground' on a stereo socket.
I used some plastic washers to insulate it.
glenn
vk3pe



<MIC_SPEAKER_1.JPG>
<MIC_SPEAKER_2.JPG>

Re: Baofeng Microphones

Glenn
 

Hi Craig,
i just measured the spacing up and drilled the holes to suit. I have a drill though with a digital readout so its relatively easy to do. Thanks for the idea though.

glenn

Re: TDA2822 fried

Nikos SV1IYF
 

JRC2073 socketed here, works ok.
73 Nikos
SV1IYF

On 12/4/2018 8:37 μμ, Joe Puma wrote:
I just received some 8pin dip sockets along with the NTE7155 audio amplifier that Mike Olsen here in the group suggested. 

image1.jpeg



On Apr 12, 2018, at 1:28 PM, Xcott Craver <xcottcraver@...> wrote:

My TDA2822 just went up in an impressive display of smoke and sparks---glad I had the top of the case off so I could see it.  This board was shipped March 9th.  It's a WX chip soldered directly to the mainboard.   This happened in the 2nd test run, after about 5-10 minutes of use.  I think it was on for about 15 minutes grand total since I assembled it.

Now it's time for me to arrange a fix---I guess I'll search through the archive to see what approach is best.  For what it's worth, we bought an early uBITX back in December and used that one a while with digital modes without any issues.   I'm guessing that this is consistent with the theory that some WX chips conk out early.

Best, Xcott K2CAJ

BITX QSO Afternoon/Evening, Sunday, April 15, 3PM & 7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere.

John P
 

BITX QSO Afternoon/Evening, Sunday, April 15, 3PM & 7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere.

Join us as we make contacts from BITX40 to BITX40 on 7.277 MHz in 40 meters!

This is a worldwide event for BITX40 stations starting at 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