Date   
Re: BITX40- tune button- no output

Steve
 

Thanks Allard!  I can make that happen.  Thanks also for the tip on the PTT.
Thanks Jack, but you're scaring me here!  I'm fine with assembling and wiring, etc.  Messing with code- YIKES.  But that's one reason why I got this thing, so, something new to learn.  
Thanks to all on this site for this fantastic sharing of knowledge.  Aloha, Steve, WH6ST

Videos for how to wire Ubitx

VU3NEO
 

created a series of videos for how to wire Ubitx.
I have tried to provide simple instructions step by step. Hope it helps Ubitx enthusiasts.
73
Neo
https://www.youtube.com/playlist?list=PLxzZgQElG0cGEn5o1M87jdv8Umb4BNTr4

Contacts on the 30 meter band

Ken Brown <n4so.ken@...>
 

Interested in contacts on the 30 meter band with completed
BITX20 or the micro version, or with the QCX transceiver if you 
have that one built.  I usually listen around 10109.

Ken N4SO


Virus-free. www.avg.com

Re: Videos for how to wire Ubitx

Art Howard
 

👍

On 16 Feb 2018 12:53 pm, "VU3NEO" <vu3neo@...> wrote:
created a series of videos for how to wire Ubitx.
I have tried to provide simple instructions step by step. Hope it helps Ubitx enthusiasts.
73
Neo
https://www.youtube.com/playlist?list=PLxzZgQElG0cGEn5o1M87jdv8Umb4BNTr4

Extron case

Vince Vielhaber
 

A couple of weeks ago someone mentioned using Extron equipment for cases. I found one that was big enough for a Bitx and would be a good fit. The B40 will fit quite comfortably in it (after moving the power supply), but I think the only way the uB will fit is if the raduino is detached. Not sure on that one, my uB isn't here yet. I have a few of the blue I2C 16x2 displays around here and can say without a doubt that they'll fit the front panel. I also have some SPI 2.8" touch screens, but there's no chance they'll fit!

As you can see in the attached pics, it has plenty of BNCs for other projects and a power supply. Dunno the current of the supply yet, but being 12 and 5v, the 7805 on the raduino can be eliminated (provided, of course, the supply puts out over an amp).

I was originally looking at the same model case for $9.00 and $9.85 shipping but somehow managed to miss the end of the auction. This one was a buy it now for $14 shipped, better deal yet!

Vince.
--
Michigan VHF Corp. http://www.nobucks.net/ http://www.CDupe.com/
http://www.metalworkingfun.com

Re: Dec 16 order of uBitx received Feb 10 via India Post

Vince Vielhaber
 

If you just got the tracking number, it may take a day or two to get into the system. You may be able to see it at India Post.

Vince.

On 02/16/2018 11:39 AM, VE7WQ wrote:
Thank you Vince, tried it but failed:


We could not find this Tracking Number in our system.

You can edit
<https://www.canadapost.ca/cpotools/apps/track/personal/findByTrackNumber?execution=e1s1#> this
Tracking Number or Request
<https://www.canadapost.ca/cpotools/apps/track/personal/findByTrackNumber?execution=e1s1#>Delivery
Updates By Email

.



73! George

VE7WQ


Friday, February 16, 2018, you wrote:

VV> USPS.com.

VV> Vince.


#ubitx - Off Topic a Litte #ubitx

Jeffrey Peters <dek9jp@...>
 

Greetings,   I have a question for this group.  I would like to use my uBitx as a receiver with my vintage transmitters.  The transmitters are tube type with power output ranging from 5-7 watts to 50-70 watts.  I currently have a MFJ-1708 Electronic T/R switch which has worked very well with all tube Drake 2B receiver.  My questions are:  What would be the best protection circuit or front end device to protect the uBitx as the receiver?  I would like to use the uBitx with a separate tube type vintage transmitter?   Your excellent electronic skills and knowledge will be most helpful.  I look forward to your thoughts and/or suggestions on this matter.

73, Jeff K9JP

Re: #ubitx - Off Topic a Litte #ubitx

Arvo W0VRA
 

I'm planning something similar, using the µB for TX and SDR for RX.  I'm going to try one of these in the box.

http://www.qrpkits.com/ezseries.html#eztrsw

Re: Videos for how to wire Ubitx

Rob Snow
 

Thank you!  My uBITX is still waiting to ship, but I'm going to study your videos.  I'm a visual learner so a picture (or video) is truly worth a thousand words.

Re: #ubitx - Off Topic a Litte #ubitx

Jeffrey Peters <dek9jp@...>
 

Thanks Arvo,

I have the older version 2 unit.  I wonder about isolation from TX RF bleed though or bleed over?  I just want to do my best to protect the uBitx.
I know tube are much more forgiving, in my personal limited experience.

I will have my uBitx in a metal case,so maybe just making an adapter with a dead short at the antenna connection during transmit will be a good solution.

Thank you, Jeff K9JP

On Fri, Feb 16, 2018 at 3:19 PM, Arvo KD9HLC via Groups.Io <arvopl@...> wrote:

I'm planning something similar, using the µB for TX and SDR for RX.  I'm going to try one of these in the box.

http://www.qrpkits.com/ezseries.html#eztrsw




--
Not all of me will die - - - The good I do will live forever.  <><

New ideas for the Audio TX/RX pop and PA output stage improvements on ubitx.net

Mike Woods
 

If you look on the home page of http://www.ubitx.net you will find suggestions from Erhard Haertel DF3FY that address:

  • Audio Pops on transitions from RX to TX
  • Improved output on all bands from the PA stage (using RDF16HHF1s and a new output transformer and minor changes to the circuitry).

Erhard had difficulty posting to the BITX20 iogroups list so wrote to me directly.  I have not tested these mods, but these are two concerns about the uBITx (loud audio pops and lower power out above 40m) so I am sure that Erhard would be as interested as me in any feedback from those trying out his mods.

73 Mike ZL1AXG

--
Mike Woods
mhwoods@...

Re: Smoking Genie

William R Maxwell
 

Did you mean that you removed Q14 again, rather than R14, elevated like a 3 legged bug Mike? A metal cased transistor certainly could short to adjacent pads if f mounted flush to the pcb.

Bill


On 17/02/2018 1:12 AM, Raj vu2zap wrote:
Mike,

Mesure the voltage across the resistors and you know the resistors value. Calculate :if I remember right V2/R = Voltage squared divided by resistance to get the power dissipated. That should give you some insight on why the Rs are getting hot.

Raj

At 16/02/2018, you wrote:
I have just finished chasing the smoking R141. Even after replacing the smd with an axial 1/2 watt, mounted vertically, it continued to get blazing hot after only 2-3 seconds of PTT. Be sure to check to see if it's still getting hot. After checking the obvious, rechecking all resistor values, double checking transistor voltages using Randy's chart. After replacing Q14, I still had the problem. I removed R14 again and mounted a new one, elevated like a 3 legged bug. Problem solved. My conclusion, with Q14 mounted tight to the board, there is a risk that the metal Q14 case will short to the board. An insulated spacer should be used or have been used, to keep this device up just a bit from the board. A friend suggested cutting the bottom of my case to access to the entire underside of the board. A great idea for new builders. BTW, I mounted the axial 10 ohm resistor through the tiny hole near it's original location. That connects to the bottom board foil ground, and one of my smd pa
ds were destroyed from unsoldering the burned R141. 
Sent from Mike's iPad WA1MAD 





Re: Videos for how to wire Ubitx

Jack, W8TEE
 

That should be very helpful. My Builders' Group is going to the the µBITX this year and this will be most helpful to them.

Jack, W8TEE



From: VU3NEO <vu3neo@...>
To: BITX20@groups.io
Sent: Friday, February 16, 2018 1:53 PM
Subject: [BITX20] Videos for how to wire Ubitx

created a series of videos for how to wire Ubitx.
I have tried to provide simple instructions step by step. Hope it helps Ubitx enthusiasts.
73
Neo
https://www.youtube.com/playlist?list=PLxzZgQElG0cGEn5o1M87jdv8Umb4BNTr4


Re: New ideas for the Audio TX/RX pop and PA output stage improvements on ubitx.net

John <passionfruit88@...>
 

Excellent, thanks Mike for posting this

Great web site by the way. Thank you for maintaining it.

One point though about this mod, I can't find reference to the ferrite balun BN43-201. Would it be BN43-202 instead by any chance? 

All the best,

73, John (VK2ETA)

Re: W0EB/W2CTX new I2C software V2.01R Release#ubitx

Michael Hagen
 

I have 4 line I2C running on uBit.

I have the RaduinoX "Better Raduino", it has a dedicated I2C connector and a dedicated Encoder connector.

I have sold over 50 PCBs and assemblies to guys on the list here.

It has lots of features, regulator fix, heat sink, ect.  Real Level Shifting on SI5351 too.

Nano plugs in and faces the other direction.

I am on my second order of 50 PCBs, so I have lots!

Contact me for more info...MotDog at Verizon dot net.

73's,

Mike, WA6ISP


On 2/16/2018 9:43 AM, Jim Sheldon wrote:
Incremental upgrade to our software for I2C display equipped Raduino cards and also our newly announced "RadI2Cino" card which is an (almost) drop-in replacement for the Raduino.  This release covers all the enhancements for the NON I2C Raduino released earlier in our non-I2C version 2.00R.  All the enhancements and new stuff is covered in the instruction PDF file --

(this version has also been uploaded to the "Files" section)

Jim - W0EB and Ron - W2CTX

-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...

Re: BITX40: Allard's Firmware with Rotary Encoder?

Ryan Flowers
 

Thank you Jack, I'll take a look. I used a test sketch to make sure the encoder works, and it does, using interrupts. Works very nicely in fact, just grounding out the pulled up digital pins. I just need to figure out how to get the tuning routine I have into a more full features sketch :) 

--
Ryan Flowers - W7RLF
MiscDotGeek.com
Multi Band BITX40
The BITX40 FAQ

Re: W0EB/W2CTX new I2C software V2.01R Release#ubitx

Arv Evans
 

Mike   WA6ISP

Prices, pictures, parts list (if not provided), etc.?
Do you have a web page for your products?
I am interested.

Arv   K7HKL


On Fri, Feb 16, 2018 at 3:09 PM, Michael Hagen <motdog@...> wrote:

I have 4 line I2C running on uBit.

I have the RaduinoX "Better Raduino", it has a dedicated I2C connector and a dedicated Encoder connector.

I have sold over 50 PCBs and assemblies to guys on the list here.

It has lots of features, regulator fix, heat sink, ect.  Real Level Shifting on SI5351 too.

Nano plugs in and faces the other direction.

I am on my second order of 50 PCBs, so I have lots!

Contact me for more info...MotDog at Verizon dot net.

73's,

Mike, WA6ISP


On 2/16/2018 9:43 AM, Jim Sheldon wrote:
Incremental upgrade to our software for I2C display equipped Raduino cards and also our newly announced "RadI2Cino" card which is an (almost) drop-in replacement for the Raduino.  This release covers all the enhancements for the NON I2C Raduino released earlier in our non-I2C version 2.00R.  All the enhancements and new stuff is covered in the instruction PDF file --

(this version has also been uploaded to the "Files" section)

Jim - W0EB and Ron - W2CTX

-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...


Re: W0EB/W2CTX new I2C software V2.01R Release#ubitx

Glenn
 

Mike
Your pdf file says 0602 smd parts. I assume you mean 0603?

vk3pe

Re: New ideas for the Audio TX/RX pop and PA output stage improvements on ubitx.net

RCBoatGuy
 

Also, what kind of wire is recommended on the new transformer?

Thanks,

Carl, K0MWC

New Build Project

tom.af4hl@...
 

I'm just starting a new BITX20 3C/3B build.  First impression: working with #32 wire to wind toroids is like working with spider silk.  It's doable, but I'm not sure how :P

---------------------------------

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