Date   
Re: tx rx led hook up

Curt
 

I see the info at ubitx.com run by Sunil. See the category 2 construction ubitx case. Click on the picture. It takes you to page with more pictures, one shows where 3 wires are soldered to bottom of board.

I had to open the mounting hole just a little with a reamer, but I left it with a tight fit.

Curt

Re: tx rx led hook up

Russ KR0EHM
 

I just finished my kit today too, smoke test passed. I have the Mic port and a couple things waiting on my antenna, but I’m very happy with the radio as well as Sunil’s case. The LED is where I’m stuck though. Not only does it seem too big for the hole, I can’t find any instructions or pictures of where to connect it.

Re: Ubitx and raspberry all in one. Digital mode FT8 - IK1ZVJ. #ft8

Ashhar Farhan
 

I had previewed a raspberry pi board for hf radios with a high end codec at the fdim. This is for a new radio that i am building to push the limits of what my homelab capability can produce.
Pictures are attached. 
There story so far is that there is a very low noise 24 bit codec on a custom board that plugs into the raspberry pi. The display is a 7inch capacitive touch screen.
The radio is a single conversion, very low distortion superhet without any amplification before the crystal filter and triple tuned filters for each band. Nothing is casual about this radio. Even the power supply had to be included to have low noise rating.

On Sat 12 Oct, 2019, 11:26 PM Ken Hansen, <ken@...> wrote:
That's awesome.

I just picked up a 'like new' Collins power supply cabinet for a KWM-2 series radio at a hamfest. I am thinking seriously about a similar build, with a uBitx mounted inside, but hadn't thought about putting a raspberry pi in there also... interesting idea.

The case looks like this, but there is no speaker installed:

https://www.universal-radio.com/catalog/hamhf/312b3a.html

Ken, N2VIP

On Oct 12, 2019, at 11:04, felicebia@... wrote:



The project stems from my passion for digital modes. The union between ubitx and raspberry works well. The LCD screen is mounted on an old CD mechanism so as to obtain automatic ejection. The project includes a dual power supply with a built-in power supply and battery power for portable use. the commutations foresee the functioning only of the ubitx, only raspberry, together to use the digital modes. On the raspberry WSIT-x are loaded for FT8 and FT4 and FLDIGI for PSK and RTTY.

The enclure is a rack 3U (9 cmx40cmx43cm).

Video on Youtube at the link:

https://youtu.be/TlndGOyNtVc

For info:

felicebia at  gmail dot com

Ham call: IK1ZVJ Felice info qrz dot com

<pannello con LCD.jpg>
<lavoro terminato.jpg>
<pannello scritta.jpg>
<meccanica cd ribaltata.jpg>
<inizio assemblaggio.jpg>

Re: tx rx led hook up

Curt
 

They solder to bottom of the main board. The enclosure should have several papers describing this, or go to Sunil's website,  may be ubitx.com to locate where to solder the wires. I then touched the wires to the led to find the green side of it.

Curt

Re: Ubitx and raspberry all in one. Digital mode FT8 - IK1ZVJ. #ft8

Ken Hansen
 

That's awesome.

I just picked up a 'like new' Collins power supply cabinet for a KWM-2 series radio at a hamfest. I am thinking seriously about a similar build, with a uBitx mounted inside, but hadn't thought about putting a raspberry pi in there also... interesting idea.

The case looks like this, but there is no speaker installed:

On Oct 12, 2019, at 11:04, felicebia@... wrote:



The project stems from my passion for digital modes. The union between ubitx and raspberry works well. The LCD screen is mounted on an old CD mechanism so as to obtain automatic ejection. The project includes a dual power supply with a built-in power supply and battery power for portable use. the commutations foresee the functioning only of the ubitx, only raspberry, together to use the digital modes. On the raspberry WSIT-x are loaded for FT8 and FT4 and FLDIGI for PSK and RTTY.

The enclure is a rack 3U (9 cmx40cmx43cm).

Video on Youtube at the link:

https://youtu.be/TlndGOyNtVc

For info:

felicebia at  gmail dot com

Ham call: IK1ZVJ Felice info qrz dot com

<pannello con LCD.jpg>
<lavoro terminato.jpg>
<pannello scritta.jpg>
<meccanica cd ribaltata.jpg>
<inizio assemblaggio.jpg>

Bitx 40 For Sale

Vince Loschiavo
 

40m Bitx in case .
55.00 + 10.00 Shipping
Contact
vince320@...

Ubitx and raspberry all in one. Digital mode FT8 - IK1ZVJ. #ft8

felicebia@...
 

The project stems from my passion for digital modes. The union between ubitx and raspberry works well. The LCD screen is mounted on an old CD mechanism so as to obtain automatic ejection. The project includes a dual power supply with a built-in power supply and battery power for portable use. the commutations foresee the functioning only of the ubitx, only raspberry, together to use the digital modes. On the raspberry WSIT-x are loaded for FT8 and FT4 and FLDIGI for PSK and RTTY.

The enclure is a rack 3U (9 cmx40cmx43cm).

Video on Youtube at the link:

https://youtu.be/TlndGOyNtVc

For info:

felicebia at  gmail dot com

Ham call: IK1ZVJ Felice info qrz dot com

tx rx led hook up

dgclifford@...
 

hi guys just fished uBITX v5 with india kits case with the extra boards,   working really well. I just need to know where to pick up connections for the tx rx led.  Well pleased with this kit it would be a great starter for anyone but the  building instructions need a complete revision."Confession" i only got one thing wrong volume control is vice-versa, but it adds an original touch .

Re: Thank you Sunil!

Bill Robbins
 

Joe:

I am finally getting around to building mine. Where did you purchase the lcd? Did you require A Bezel?

Bill. WA8CDU

On Mar 20, 2019, at 12:25 AM, Joe Puma <kd2nfc@...> wrote:

Just wanted to say thank you to Sunil for helping me while assembling my new case. These cases are awesome and really add to the fun and creativity of building the uBitx. I am still waiting for the 5” LCD but here are some images of my progress









Joe
KD2NFC



<image1.jpeg>
<image2.jpeg>
<image3.jpeg>
<image1.jpeg>

Re: Audio input to transmitter - level? #ubitx

Evan Hand
 

II do not know of a way to set it with out some test equipment, at least a dvm that can measure the current to the PA section.

Using either a current meter on the PA input, or an RF power meter on feed to the antenna, I would start with the supplied mic, and then do the "HEEEELOOOW" test in the wireup section on the HF Signals web page.  Use that current or power level as the desired level, and then adjust the audio drive to get the same level of output, or lower.  Then go and try the digital mode of choice and get feedback on signal quality. 

I have not used the digital modes with the uBITX, so there maybe flaws in the above.  I did use the method to verify an amplified mic setting to insure I did not overdrive the mic input, and verified as much as possible with the simple spectrum analyzers (SA) that I have (Cheap RF Explorer and a RSPlay RSP2 used as an SA).  As far as I could tell there was no splatter.

Above are just my thoughts. You are still responsible for the signal quality, and there may be better options, like going to a local club that has access to a SA or other test equipment.

73
Evan
AC9TU

Re: Audio input to transmitter - level? #ubitx

F5NPV
 

hello, 

in order to control the AF input for voice and digital i add the level input measurement on a vu-meter. You just need to calibrate the level you display on it to prevent any overloading of the AF input amplifier.

on the vu-meter i supervise the AGC and AF input with a switch.

73s from Didier F5NPV

Audio input to transmitter - level? #ubitx

Rob French (KC4UPR)
 

Hello,

So I'm driving digital audio into the uBITX, and I'm wondering how, in the absence of any real test equipment, to properly set the audio input to avoid transmit distortion.  Now, I do have the ability to set the peak-to-peak voltage of the DAC I'm using.  So, if the DAC is hooked up to the mic input, what would be the proper audio peak voltage level to be (typically) setting? 

Re: ubitx mic Icom HM-219 #ubitx

kc9bg.lisadavis@...
 

Thank you for the information.  That and a good hard look at the soldering job and I have a working ubitx now.  On to the firmware..

V5 clk frequencies

vk6qa
 

Has anybody measured all the clock freq ,I realise that they will depend on the  vfo freq and mode.

Re: ubitx AM brodcast problem #bitx40help #ubitx #filters #bitx20 #bitx20help

John Sharpe
 

Maybe this? Have a look at Errors and learning with Bitx40  just a few topics down . . . 

F- Subject: I only received the audio from an AM radio. The frequency changed but nothing else was heard.
Solution: The Raudino DDS cable was connected to the PA voltage connector. Fortunately I do not connect voltage to the DDS input of Bitx40.

Good luck
 

Re: HELP PLEASE

Keven Pittsinger
 

The resistance should read infinite if there's no short.


On Fri, Oct 11, 2019 at 1:08 PM <mtngentleman@...> wrote:
i HAVE ASSEMBLED MY BITX 40.  UPON TESTING i FIND A DEAD SHORT ACROSS THE POWER PLUG.
I MUST DISCONNECT BOTH THE PWR1 AND PA PWR PLUGS TO ELIMINATE THE SHORT. ALSO  CAN ANYONE TELL ME WHAT
THE RESISTANCE SHOULD READ ACROSS THE POWER PLUG?

TKS,

SHEP AA7MH

HELP PLEASE

mtngentleman@...
 

i HAVE ASSEMBLED MY BITX 40.  UPON TESTING i FIND A DEAD SHORT ACROSS THE POWER PLUG.
I MUST DISCONNECT BOTH THE PWR1 AND PA PWR PLUGS TO ELIMINATE THE SHORT. ALSO  CAN ANYONE TELL ME WHAT
THE RESISTANCE SHOULD READ ACROSS THE POWER PLUG?

TKS,

SHEP AA7MH

Re: ubitx AM brodcast problem #bitx40help #ubitx #filters #bitx20 #bitx20help

MadRadioModder
 

“all over the bands. it dosent matter if i am on 3,5 or on 28 mhz. this station is over 100km from me”

 

Something else is wrong.  Sounds like a bad solder joint that is acting like a diode demodulation connection to me.  You won’t hear the AM station everywhere unless it’s being injected further downstream in the RF chain into one of the mixers.

 

 

 

From: BITX20@groups.io [mailto:BITX20@groups.io] On Behalf Of MVS Sarma
Sent: Friday, October 11, 2019 4:24 AM
To: BITX20@groups.io
Subject: Re: [BITX20] ubitx AM brodcast problem #bitx20 #bitx20help #bitx40 #bitx40help #ubitx #filters

 

use the linked calculator and try making a band stop filter , say from 1  to 2 MHz  It works like trap and you can manage

 the enclosure of ubitx should better be metallic and  the body grounded. the filter could be  between antenna socket and pcb  ant pins.

 

All the best

 

sarma vu3zmv

 

 

 

On Fri, Oct 11, 2019 at 2:37 PM <circular.simetry@...> wrote:

Hello everybody, i have a problem with my ubitx on receive, i am receiving an AM station who broadcast on 1530khz  all over the bands. it dosent matter if i am on 3,5 or on 28 mhz. this station is over 100km from me


Virus-free. www.avg.com

--

…_. _._

Re: Gordon Gibby Digital Interface

Rob French (KC4UPR)
 

With my V5 uBITX, I have also been tapping from the high side of the volume pot, and it seems to be working fine.  I do believe my volume is slightly reduced for my speaker output, but that output has always been ridiculously high for me anyway, somehow.  Maybe it's the earbuds.  Anyway, I don't have this particular digital audio interface, but I've been tapping the high side of the volume control via a 1:1 transformer, and it seems to be ok.  I have been considering making a small preamp on that path, however, with a trimpot that I could use to fine tune the output to the PC (or in my case, to my Teensy-based DSP filter).

How has your C60 tap for transmit audio worked out?  I'm trying to figure out if I need to make some little op amp mixer for microphone versus computer audio input, or if I should just put a toggle switch in there and be done with it.

Re: Multiple I2C devices with Raduino

Rob French (KC4UPR)
 

Thanks, Jerry.

Yes, that was super interesting to me, especially with that Teensy 4.0... very fast!  However, it sounds like there may be some issues with attaching the audio adaptor to that, and/or perhaps issues with the Rev D audio adaptor that is suppsed to mount to the Teensy 4.0.  Currently, I have a Teensy 3.2 with the Rev C audio adaptor.

How slow is slow?  Right now, my Teensy doesn't talk to the Raduino at all... it just does DSP, and I "control" it via serial commands from the my computer.  My plan for controls is that the Teensy will have it's own set of encoders attached to it for adjusting filter selections/parameters, and it will periodically receive commands from, and send status to, the Raduino.  Commands would be along the lines of "switch to SSB filter", "switch to CW filter", etc. and status would be maybe a 10 Hz (max) update of brief information on the display (such as showing which filter is selected, providing a menu entry for a parameter to adjust, etc.)

Totally agree it would be nicer to have all firmware on one processor!