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hi from italy---

 

hello guys, i'm? in3izq danilo? and? just? have? finish my? ubitx ver. 4.3 .

have? some problem : audio? is very loud ? its because tda 2822 is broken ? on? mother board have not found 2822.? maybe is next version ?

sorry? for my? english,? hope you understand. ? have read? more message , but are now

in high sea.....best '73? and tnx in advance? for? help ? in3izq danilo
Re: kd8cec sketch

 

Hi,

I only have Linux and it all worked for me. I have already mentioned that I came to several stumbling places but the instructions (when I bothered to read them) got me past to those and all the way to the finish -eben though I found mistakes in them. Other notes explained those, too. I abandoned Microsoft when I bought NT 4.0 Back Office and then Microsoft told me it won't run unless I buy several more hundred dollars worth of software. I used the parts that came with the licenses I got in the packages and when those expired I was at 100 percent Linux. You only get to screw me once!

Actually we have started using Android and Apple systems. MS is dead to me.

73,

Bill KU8H

On 08/25/2018 12:37 PM, terryhugheskirkcudbright via Groups.Io wrote:
hi

It works ok in windows but not linux

Arduino.h (with a capital A) in is in
Home/Desktop/arduino-1.8.6/hardware/avr/cores/arduino

Maybe i will just use windows although my main computer uses linux

Terry
--
bark less - wag more
Re: End Fed antennas w/ uBITX #ubitx

 

I would like to share with you the results from two different experimental 1:49 transformers I made. First one is low power made with just a small binocular ferrite. Primary has just 2 turns and 8.8uh, secondary 14 turns 413 uH. 150pf across the primary . I don't know the material but I see not measurable SWR without termination. Terminating with a 2500ohm resistor i find an SWR close to 1.2 on 160m dipping on 80m and rising up to 1.80 on 40m. Beyond 40m swr is higher. The other transformer is made with a T200-7 (white, iron powdered toroid). Primary and secondary dc isolated, 90 turns (about 90uh) on the secondary and 12 turns spread over the primary over 200 degrees (about 2 uh) . Primary and secondary windings are made with enameled wire and there is a layer of transformer tape between the secondary and the primary. There is no fancy winding (no change of winding direction) just primary over the secondary. 120pf across the primary. Without termination I got infinite swr below 20Mhz. The secondary is 7 meters long and SWR is very low on 20.8mhz. Terminating with a 2500ohm resistor SWR is descending to something more than 2 on 80m, 1.3 on 40m and 1 or very close to 1 on 30m, 20m and 17m. Using a 360pf variable instead of the fixed cap the SWR drops on 80 to 1.67 and close to 1 from 40 to 17m band. As said to make a proper test I should do a back to back test but it seems to me now that both transformers may work reasonably well, the small ferrite transformer on low bands and the iron powdered cores one well from 80 to 17m bands. So, even if the material of the cores were likely not to be the proper ones, it seems they may be used for building high transformation ratio conventional transformers, albeit not extremely wideband.


Il 07/ago/2018 19:41, "ajparent1/KB1GMX" <kb1gmx@...> ha scritto:
Iz oos,

Even a small core can handle more power than though if its not lossy or a lossy winding scheme.

I've used BN61-202s with no issues at 10W.? and the much larger 3312 (hard to find in 61) size to 100.

Stacking 4 FT50-61 (2x/2x) as a two hole core? can work well too.? Treat the hole just like standard
two hole core.? That will take maybe 20-25W.

Allison

Re: kd8cec sketch

 

hi

It works ok in windows but not linux

Arduino.h (with a capital A) in is? in Home/Desktop/arduino-1.8.6/hardware/avr/cores/arduino

Maybe i will just use windows although my main? computer uses linux

Terry
Re: Homebrew from scratch #ubitx

 

Thanks Howard! I've downloaded ViewMate, and am working my way through it.
Re: Homebrew from scratch #ubitx

 

No, Peter's files don't include a .drl file.

Thanks! That gives me a direction...
Re: Bitx40/Ubitx for sale #bitx40 #ubitx

Robert Ray
 

The unbuilt bitx40 with no raduino is SOLD!

If someone is interested in the mostly built bitx40 (that is currently in the lunch box), I am happy to disassemble and package in a smaller box, saving on shipping.

Just let me know! ?KD0YMC - 3402ray@...
Re: Homebrew from scratch #ubitx

Gordon Gibby
 

¿ªÔÆÌåÓý

Do your files include the .drl file? ? That¡¯s usually the hangup for me. From dip trace you have to do a second export to get that file ? ?Without it they won¡¯t make the printed circuit.?




On Aug 25, 2018, at 11:02, Ben Holmes <judosandan@...> wrote:

I've been trying to get a PCB from Peter's Gerber files, I'm assuming a 6x6in PCB - but the Gerber files are unreadable by the company I paid... I'm presuming a version error in the Gerber files. Anyone have ideas for free software that can import a Gerber file?

I'd hate to start from scratch - knowing that others have already done the work - but it may come to that...? I'm not experienced in creating PCB's...

Re: Homebrew from scratch #ubitx

 

I use ViewMate, it is free:


Howard
Quoting Ben Holmes <judosandan@...>:

I've been trying to get a PCB from Peter's Gerber files, I'm assuming a 6x6in PCB - but the Gerber files are unreadable by the company I paid... I'm presuming a version error in the Gerber files. Anyone have ideas for free software that can import a Gerber file?

I'd hate to start from scratch - knowing that others have already done the work - but it may come to that...? I'm not experienced in creating PCB's...
Re: kd8cec sketch

Joe Milosch
 

On Sat, 25 Aug 2018 07:12:35 -0700
"terryhugheskirkcudbright via Groups.Io" <terryhugheskirkcudbright@...> wrote:

Hi, for me, and a few others, the KD8CEC sketch gets the CW straight keyer to work
as it is supposed to. The default sketch didn't work for cw.

Upon studying the CEC sketch there are too many
improvements for me to fully understand or mention.
See

From my first observations, the manual is better:


Plus you can use a useful tool called the Memory Manager
which allows you to make settings on the Raduino easily.
I use linux, and the Memory Manager also runs on it thru the
Mono .Net framework. See the above manual for instructions
on installing Memory Manager and Mono on linux.

All in all, if you can update your sketch, I say its worthwhile.

Joe
KN4OND




I tried to compile the kd8cec sketch on the ide and it came up with an error - arduino.h not found

where can i download this file

also what is the advantage of the kd8cec sketch over the ashaar farnum sketck

73 de terry gm4dso
Re: kd8cec sketch

Jack Purdum
 

If you installed the IDE correctly, you should have the arduino.H header file in the IDE's root directory below:

??? hardware\arduino\avr\cores\arduino\Arduino.h

Also note that C is a case-sensitive language, so arduino.h is not the same as Arduino.h. Your statement shows lower case which may not work. (I think I saw somewhere there is an arduino.h, but I'm not sure.)

Jack, W8TEE


On Saturday, August 25, 2018, 10:12:41 AM EDT, terryhugheskirkcudbright via Groups.Io <terryhugheskirkcudbright@...> wrote:


I tried to compile the kd8cec sketch on the ide and it came up with an error - arduino.h not found

where can i download this file

also what is the advantage of the kd8cec sketch over the ashaar farnum sketck

73 de terry gm4dso

Re: Homebrew from scratch #ubitx

 

I've been trying to get a PCB from Peter's Gerber files, I'm assuming a 6x6in PCB - but the Gerber files are unreadable by the company I paid... I'm presuming a version error in the Gerber files. Anyone have ideas for free software that can import a Gerber file?

I'd hate to start from scratch - knowing that others have already done the work - but it may come to that...? I'm not experienced in creating PCB's...
kd8cec sketch

 

I tried to compile the kd8cec sketch on the ide and it came up with an error - arduino.h not found

where can i download this file

also what is the advantage of the kd8cec sketch over the ashaar farnum sketck

73 de terry gm4dso
Re: ?B K1 Relay, RF Side

 

Thanks for the tip on desoldering with a wick atouk i was wondering why desoldering didn't work well. Forgot that manufacturers are lead shy.
Re: Bitx40/Ubitx for sale #bitx40 #ubitx

 

Am interested in the Bitx40 board. What parts come with it?

--
72 and God bless
KD4EPG
Re: Fried irf510s replaced but

 

Thanks Allison, I will check those coils.? I Learned the hard way that one pass is a turn when I built my K2.? :)

Cheers

jeff VK3GMO
Re: Homebrew from scratch #ubitx

Joe Milosch
 

On Fri, 24 Aug 2018 17:44:21 -0700
"Brian Bowling" <bowlingb@...> wrote:

Great tutorial, highly recommended to watch.
Thanks for pointing it out. There is such a deluge of
information out there, that quality videos are often
overlooked.

Joe
KN4OND


Building an Arduino Uno from "scratch".


Brian
N8BDB
Re: Ubitx V3 Please Help, ANTENNA Pins on PCB have SHORTED no Receive #ubitx #ubitx-help

 

Fabian
you will always get a DC short across the antenna terminals.
If you follow the circuit from the two antenna connectors one is earth, on receive the other goes from K3 contact 12 to 14 to K1 contact 12 to 14 to L1, L2, L3, L4 of the Low Pass Filter to T2 winding one side marked number 1 through the coil marked side number 6 to earth.
On Transmit the winding of the output transformer T11 marked number 2 is earth, the other side of the winding marked number 6 goes to KT1 contact 12 to contact 16 and then through the respective Low Pass Filter depending on which band you are transmitting.
As you can see there is always continuity through the various coils and you will always get a DC short across the antenna terminals both on receiving and transmitting.
As for not receiving anything, did you connect an antenna to the transceiver?
Regards
Lawrence

On Sat, Aug 25, 2018 at 1:00 PM sdr freak <sdrfreak55@...> wrote:
Hello,?
?
My Name is Fabian and 31 years old from Meiningen in Germany and a have HAM Licence Class E since 5 Weeks and my English is not the best so i hope you can forgive me my writing and spelling mistakes and can unterstand my problem. I need really your help and i i really thankfully for any help so i can cry when my Ubitx receive at one day..
?
I have not much money and a have many health problems so a have only a little job and can't buy a Transceiver like a Yaesu or Icom in this price class.. My big Dream was to have a little SSB Transceiver for 80m and 10m, bescause in Germany with my HAM Class E onky 160m,80m,15m,10m are allowed.?
?
So a other HAM from my town sell a Ubitx and i was very lucky to think for 130€ my big Dream was come true.. He says its the best for me and not really difficult to construct, only little bit of soldering an than i can have my QSO a few our later.. So i trust him because i think its a friend, but he knows that i was a beginner of HAM.. I do not want to blame him, only I am a bit out of tune because many said a kit was not for a bloody beginner.?
?
But now to my problem..
?
I have been trying to get the transceiver running for a month but unfortunately without success. I have tried many things including the updates of the CEC versions and the Ubitx version v4 but all you hear are rushing and sounding like digital beeping. I've also tried the audio NF chip, the TDA2822 is the version FCI and does not seem to be the problem. Then I tried everything again with other antennas and also outside to avoid disturbances of the house. but again no success.
?
By chance, I then checked everything for short circuits and suddenly I see with the continuity tester, the multimeter tester, between the 2 pins on the board where you connect the antenna cable, which has a short circuit just these two !!! I did not know any further .. Then I was in the Ubitx chat from the forum here and David said that's just not good and that must be the error that I'm not receiving properly .. By the way, thanks again to david if you read it, You are really nice and I would like to say thank you again !!
?
that's exactly my big problem. I need urgently your help to repair the antenna pin short circuit. I'm really really thankful for any help I can do now or check something. or if it is possible that you had this error before and know what needs to be repaired. I am really very sad to have not had a single QSO for my test for ham... but maybe everything will be alright, I always hope so...
?
I say thank you very much!

Best regards Fabian
Re: Ubitx V3 Please Help, ANTENNA Pins on PCB have SHORTED no Receive #ubitx #ubitx-help

 

Hello Fabian,

If you trace the circuit from the antenna it will lead you through several relay contacts to an inductor to ground. That is a piece of wire that wraps around and around with or without a core. Your meter uses direct current to measure resistance and continuity. Direct current sees any inductor as a plain old piece of wire - a short. So it sees that inductor to ground as a dead short. At RF frequencies however, it is NOT a short. Most - maybe all - radios will have this:) So you should continue looking elsewhere for the problem.

Have you completed the "alignment" steps? If the oscillators are far off frequency the radio will not work very well if at all. Do you have a more experienced ham there who can help you?

Fabian, we all have or had different 'starting' places. It is not reasonable to assert that a kit is not for a beginner! At one time if hams did not make their own radios from scratch (not even a kit) they had no radio at all. The uBitx is not really so much of a kit. Building your own gear from scratch or from a kit is 'learning by total immersion'. Sometimes that method can seem frustrating but eventually we all get where we want to be. Just relax and enjoy the 'journey'. After you have finally sorted out the trouble and corrected it you will find it more satisfying than that Kenwood or Yaesu:) Those have their own rewards and can be an appropriate starting place for somebody else.

I started out building radios from a pile of old junk harvested from dead radios. At times it was discouraging but in the end it doesn't seem to have hurt me:)

And now about your English. Your English is very usable for a non native English user. I know only a few German words and not very much about the grammar or syntax. If I was suddenly transplanted to Germany I would experience 'total immersion' and would soon be speaking, reading, and writing German. It would sometimes seem frustrating but eventually I would fit right in :) For now your English is substantially better than my German.

73,

Bill KU8H

On 08/25/2018 07:00 AM, sdr freak wrote:
Hello,

My Name is Fabian and 31 years old from Meiningen in Germany and a have
HAM Licence Class E since 5 Weeks and my English is not the best so i
hope you can forgive me my writing and spelling mistakes and can
unterstand my problem. I need really your help and i i really thankfully
for any help so i can cry when my Ubitx receive at one day..

I have not much money and a have many health problems so a have only a
little job and can't buy a Transceiver like a Yaesu or Icom in this
price class.. My big Dream was to have a little SSB Transceiver for 80m
and 10m, bescause in Germany with my HAM Class E onky 160m,80m,15m,10m
are allowed.

So a other HAM from my town sell a Ubitx and i was very lucky to think
for 130€ my big Dream was come true.. He says its the best for me and
not really difficult to construct, only little bit of soldering an than
i can have my QSO a few our later.. So i trust him because i think its a
friend, but he knows that i was a beginner of HAM.. I do not want to
blame him, only I am a bit out of tune because many said a kit was not
for a bloody beginner.

But now to my problem..

I have been trying to get the transceiver running for a month but
unfortunately without success. I have tried many things including the
updates of the CEC versions and the Ubitx version v4 but all you hear
are rushing and sounding like digital beeping. I've also tried the audio
NF chip, the TDA2822 is the version FCI and does not seem to be the
problem. Then I tried everything again with other antennas and also
outside to avoid disturbances of the house. but again no success.

By chance, I then checked everything for short circuits and suddenly I
see with the continuity tester, the multimeter tester, between the 2
pins on the board where you connect the antenna cable, which has a short
circuit just these two !!! I did not know any further .. Then I was in
the Ubitx chat from the forum here and David said that's just not good
and that must be the error that I'm not receiving properly .. By the
way, thanks again to david if you read it, You are really nice and I
would like to say thank you again !!

that's exactly my big problem. I need urgently your help to repair the
antenna pin short circuit. I'm really really thankful for any help I can
do now or check something. or if it is possible that you had this error
before and know what needs to be repaired. I am really very sad to have
not had a single QSO for my test for ham... but maybe everything will be
alright, I always hope so...

I say thank you very much!

Best regards Fabian
--
bark less - wag more
Re: Ubitx V3 Please Help, ANTENNA Pins on PCB have SHORTED no Receive #ubitx #ubitx-help

 

Fabian:
If you look at he schematic, you will see that the antenna connects to T2 through the relays and a Low pass filter. It should present a DC short. However for RF this is OK since the transformer is normally not a short. If you could describe your problem in more detail maybe we can help you. Does your Raduino work? Do you hear any signals? Etc.

Howard
Quoting sdr freak <sdrfreak55@...>:

Hello,?
?
My Name is Fabian and 31 years old from Meiningen in Germany and a have HAM Licence Class E since 5 Weeks and my English is not the best so i hope you can forgive me my writing and spelling mistakes and can unterstand my problem. I need really your help and i i really thankfully for any help so i can cry when my Ubitx receive at one day..
?
I have not much money and a have many health problems so a have only a little job and can't buy a Transceiver like a Yaesu or Icom in this price class.. My big Dream was to have a little SSB Transceiver for 80m and 10m, bescause in Germany with my HAM Class E onky 160m,80m,15m,10m are allowed.?
?
So a other HAM from my town sell a Ubitx and i was very lucky to think for 130€ my big Dream was come true.. He says its the best for me and not really difficult to construct, only little bit of soldering an than i can have my QSO a few our later.. So i trust him because i think its a friend, but he knows that i was a beginner of HAM.. I do not want to blame him, only I am a bit out of tune because many said a kit was not for a bloody beginner.?
?
But now to my problem..
?
I have been trying to get the transceiver running for a month but unfortunately without success. I have tried many things including the updates of the CEC versions and the Ubitx version v4 but all you hear are rushing and sounding like digital beeping. I've also tried the audio NF chip, the TDA2822 is the version FCI and does not seem to be the problem. Then I tried everything again with other antennas and also outside to avoid disturbances of the house. but again no success.
?
By chance, I then checked everything for short circuits and suddenly I see with the continuity tester, the multimeter tester, between the 2 pins on the board where you connect the antenna cable, which has a short circuit just these two !!! I did not know any further .. Then I was in the Ubitx chat from the forum here and David said that's just not good and that must be the error that I'm not receiving properly .. By the way, thanks again to david if you read it, You are really nice and I would like to say thank you again !!
?
that's exactly my big problem. I need urgently your help to repair the antenna pin short circuit. I'm really really thankful for any help I can do now or check something. or if it is possible that you had this error before and know what needs to be repaired. I am really very sad to have not had a single QSO for my test for ham... but maybe everything will be alright, I always hope so...
?
I say thank you very much!

Best regards Fabian
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