Date   

Re: Raduino logic levels

Rod Davis
 

Hi All,

I have done over 6 projects with Arduino/I2C adapter/1602 display.
I remove the I2C pullups from the ebay PCF8574 I2C adapter assembly, and let the
pullups to 3.3v (located somewhere else, like near the SI570)
do the work. The PCF8574 easily copies the 3.3V I2C
signals, as they rise above the approx 2.5v threshold for a 0-1 transition.

In general, 5V devices will easily copy the 3.3V logic-one level, because it is higher than the 2.5V threshold.

Therefore, in a mixed system with 5V and 3.3V devices, I suggest pulling the I2C bus up to 3.3V,
and do not use level shifters.

Works like a charm.

Rod KM6SN

I bought a 4x20 display that's I2C and was really surprised that what they
used to convert the parallel to I2C was a PCF8574, an 8 bit i/o expander. 
I use the PCF8575, the 16 bit version, when I need more DIO pins.

Vince.

On 12/29/2017 03:30 AM, MAc B wrote:

So - IF I have two (or more) I2C devices working with different levels, then one of them must be used with level shifter. It is clear.

The question is - "which strategy is better"

A.\  use 3.3V device (eg SI5351) without shifter (like Raduino) and other device (5V) shift to 3.3 and then connect to raduino (exactly "to I2C pins of si5351")

OR

B.\ cut traces to si5351 at Raduino, insert level shifter, shift SI to 5V and then use OTHER device(5V) without shifting. (connecting to 5v I2C pins of arduino)

MAc
mrn



ALE, WINLINK and uBitX

Gordon Gibby <ggibby@...>
 

I believe the new uBitx can be an optimal transceiver for moderate power automatic Link establishment (ALE) and could also become part of a WINLINK RMS server station. The big advantage of the new ubitx is that it does not need to "click relays" to change receive frequencies, because of its high intermediate frequency and up-conversion of the entire HF band.

Last night I succeeded at getting older Icom725 running on PC – ALE. Slowing the (scanning) frequency transition to one per second helped. (Hint: use the transceiver control settings "Icom Icom "--The specific setting ICOM 725 did not work.)

Clicking relays once per second just can't be good for the life of a transceiver.

I believe I could easily arrange a sketch where in ALE usage, the uBitX would not click the relays until it actually needed to perform a "sounding" (apparently once per hour ) or respond to a call request.

Since ALE allows for frequency shifts of up to five times per second, the uBitX has a distinct advantage. wINLINK servers only change frequencies every 3 to 6 seconds, so the Relay wear isn't quite as bad, but still a uBitx could be used for the receiver portion, with a bit of software somewhere to drive an external powerful transmitter to the correct frequency only when a contact has to be responded to. I'm not certain, but receiver automatic gain control might be an improvement for this application. Of course, the uBitX with it's 10+ watt output could serve as a WINLINK server all by itself, or With a small amplifier would be wonderful setup.

In order to start trying automatic link establishment ,you join their group on Yahoo, download the software, watch a video or two for hints and turn the system on. Requires only a sound card interface.

Google hflink.



Sent from my iPhone


Re: Raduino logic levels

MAc B
 

So - IF I have two (or more) I2C devices working with different levels, then one of them must be used with level shifter. It is clear.

The question is - "which strategy is better"

A.\  use 3.3V device (eg SI5351) without shifter (like Raduino) and other device (5V) shift to 3.3 and then connect to raduino (exactly "to I2C pins of si5351")

OR

B.\ cut traces to si5351 at Raduino, insert level shifter, shift SI to 5V and then use OTHER device(5V) without shifting. (connecting to 5v I2C pins of arduino)

MAc
mrn


Re: #ubitx Re: Ubitx only on preorder now #ubitx

MAc B
 

Got my tracking.

Ordered 11th, sent 29th. As expected.

73

MAc


Re: UbitX AM

David S
 

Hi Guys

Jerry wrote
"Looks rather complex, perhaps there are better chips for this now.Am curious if anyone knows of better ways to do this. ( synchronous AM)"

Try looking for designs using TBA120, or SO42P, the latter is the Telefunken equivalent but some articles are in German so easier to find using that part number.  I think that you may also be able to us MC1330, but that's going from a very old (rusty) memory.

I'm waiting for my UBitX,, in a bag somewhere maybe in the UK, but on its way.

Regards David G8DJM


Re: uBITX - Sensible mods #ubitx

Nigel G4ZAL
 

Hi All,

Thanks for the info/hints 'n' tips - kind of what I was looking for - keep 'em coming...
I'm sure there's a ton of good info on groups.io, but digging out the most useful from the 'noise' is a challenge.

I'm toying with setting up a simple web site with a few pages to simply list out mods to this hackable little rig - it looks like a tinkers delight !

I don't expect to receive mine much before the end January 2018, but have got notification my order is now processing (placed on the 13th Dec)...

Nigel G4ZAL


Re: uBITX - Sensible mods #ubitx

WA9PWR
 

Agreed.  That is how Bipolar Microwave Power Amplifiers work as well.


On 12/28/2017 3:54 PM, M Garza wrote:
Would grounded gate work for SSB?

Marco - KG5PRT 

On Dec 28, 2017 2:54 PM, "Rahul Srivastava via Groups.Io" <vu3wjm=yahoo.com@groups.io> wrote:
Over the years I have seen the love hate relationship with IRF510, it has been used and abused in CB, KPA100 amps of Elecraft right down to Ubitx. Everyone grumbles about the high gate capacitance ... well FETs are akin to valve how about using them in in grounded gate configuration the gate capacitance goes to ground understandably the over all gain would be slightly low something akin to 10 dbs per stage but on other hand it will work with some good gain upto higher freq range.

A  thought

73

Rahul VU3WJM 


Re: Raduino logic levels

Smitty, KR6ZY
 

This gave me a good chuckle...  :-)

On 12/28/2017 05:32 PM, Jerry Gaffke via Groups.Io wrote:
you could do it for about $0.25 plus $10 shipping


Re: Connection test between uBITX and digital communication program via cat communication #ubitx

Joe Puma
 

Very nice.  I will definitely do this with my raspberry pi using WSJTX.  So you’re controlling it with the USB port on the Ubitx? 

Let us know when you have some working instructions that we can follow so we can make use of this also. 

Thx
Joe,
KD2NFC 


Sent from my iPhone

On Dec 28, 2017, at 7:46 PM, Ian Lee <kd8cec@...> wrote:

Two days ago I wrote a CAT communication program for uBITX. 
It was tested through Ham Radio Deluxe and I posted that information through this group.
Perhaps the CAT communication test seems to have been completed with this posting.

I have tested using various software that is popular these days.
Posting about CAT communication testing is probably the last. But if you have amateur radio software that I did not think of, mail to me, Then I will test again.

1.WSJT-X
   uBITX(HF Tranceiver for Amateur radio) with wsjt-x software and CAT interface test
   https://www.youtube.com/watch?v=3olq1IzdEqM

   result : perfect, I was able to use wsjtx's rig control functions (Set, Get Frequency, PTT Control)

2.fldigi
  uBITX(HF Tranceiver for Amateur radio) with fldigi CAT interface test
  https://www.youtube.com/watch?v=efFZgSfqku4

   result : perfect, I was able to use fldigi's rig control functions (Set, Get Frequency, PTT Control)

3.JT65-HF
  uBITX(HF Tranceiver for Amateur radio) with jt65-HF and CAT interface test
  https://www.youtube.com/watch?v=agbhGcMBmo0

   result : perfect, I was able to use fldigi's rig control functions (Set, Get Frequency, PTT Control)

4.FTBCAT
  uBITX(HF Tranceiver for Amateur radio) with FTBCAT and CAT interface test
  https://www.youtube.com/watch?v=uXWUqsRJE_I

   result : perfect, I was able to use fldigi's rig control functions (Set, Get Frequency, PTT Control, vfoA / vfoB Change and more)

If you want to use ham radio deluxe to control uBITX and change the settings of uBITX, check out the previous post I registered.

Firmware for testing will be released shortly. If you do not like it after testing, you can always restore it with the original firmware so you do not have to worry.
There were various opinions in this group about source disclosure.
I will choose the best way to publish the source, apart from suggesting how to get some features into the original uBITX original source with github and how to publish the source separately.


--
Best 73
KD8CEC / Ph.D Ian lee
kd8cec@...
www.hamskey.com (my blog)


Re: UbitX AM

Mike Woods
 

You are right - the IF would need to shift to the broadcast band ... but that shouldn’t be a problem for the raduino.   The si4374 or 75 are capable of receiving shortwave, but there are no prebuilt modules available for these chips.  Still, worth a bit of experimentation perhaps.  I may order a couple of modules to play around with.  A few other projects are lined up for now, that is, after we get back from summer holidays!

Mike ZL1AXG


On Fri, 29 Dec 2017 at 6:20 PM, Jerry Gaffke via Groups.Io <jgaffke=yahoo.com@groups.io> wrote:
Interesting thought.

The Si4730 is darn near a complete radio already.
Though having signals go through the uBitx's 45mhz first IF would avoid trouble from strong adjacent QRM.
And would be fun to show onlookers how well the uBitx does at receiving broadcast FM stations.

SiLabs does have some SW receivers suitable for receiving 12mhz, I don't think the Si4730 is one of them.
Could move the uBitx second local oscillator to 45mhz+1.7mhz such that the Si4730 sees 1.7mhz.

Jerry
 



On Thu, Dec 28, 2017 at 08:43 pm, Mike Woods wrote:
I wonder if the si4730 chip could be used at say 12MHz for AM reception? This frequency is inside the si4730 working parameters.  The modules are very cheap to buy ex China and can be configured over an i2c port on the arduino.  Input would be taken before the uBitx crystal filter and analogue output taken to the volume control input.  It may be able to be made to nicely integrate with the ubitx?  What do you think?
 


Re: UbitX AM

Jerry Gaffke
 

Interesting thought.

The Si4730 is darn near a complete radio already.
Though having signals go through the uBitx's 45mhz first IF would avoid trouble from strong adjacent QRM.
And would be fun to show onlookers how well the uBitx does at receiving broadcast FM stations.

SiLabs does have some SW receivers suitable for receiving 12mhz, I don't think the Si4730 is one of them.
Could move the uBitx second local oscillator to 45mhz+1.7mhz such that the Si4730 sees 1.7mhz.

Jerry
 



On Thu, Dec 28, 2017 at 08:43 pm, Mike Woods wrote:
I wonder if the si4730 chip could be used at say 12MHz for AM reception? This frequency is inside the si4730 working parameters.  The modules are very cheap to buy ex China and can be configured over an i2c port on the arduino.  Input would be taken before the uBitx crystal filter and analogue output taken to the volume control input.  It may be able to be made to nicely integrate with the ubitx?  What do you think?
 


Re: My µBITX in its new home

Mark W <K3MRK1@...>
 

Where is the best deal for a bezel?

My cut came out great for the Bitx40, Don’t think I’ll be that lucky twice in a row.

Mark

K3MRK


Re: UbitX AM

Mike Woods
 

I wonder if the si4730 chip could be used at say 12MHz for AM reception? This frequency is inside the si4730 working parameters.  The modules are very cheap to buy ex China and can be configured over an i2c port on the arduino.  Input would be taken before the uBitx crystal filter and analogue output taken to the volume control input.  It may be able to be made to nicely integrate with the ubitx?  What do you think?

Mike ZL1AXG


On Fri, 29 Dec 2017 at 5:04 PM, Jerry Gaffke via Groups.Io <jgaffke=yahoo.com@groups.io> wrote:
This might be the NE602 synchronous AM detector Farhan mentioned:
    http://www.arrl.org/files/file/Technology/tis/info/pdf/9307028.pdf

Looks rather complex, perhaps there are better chips for this now.
Am curious if anyone knows of better ways to do this.

Jerry, KE7ER



On Thu, Dec 28, 2017 at 04:55 pm, VK3HN wrote:
Although f's suggestion of a NE602 synchronous AM detector does sound intriguing. 


Re: UbitX AM

Jerry Gaffke
 

This might be the NE602 synchronous AM detector Farhan mentioned:
    http://www.arrl.org/files/file/Technology/tis/info/pdf/9307028.pdf

Looks rather complex, perhaps there are better chips for this now.
Am curious if anyone knows of better ways to do this.

Jerry, KE7ER



On Thu, Dec 28, 2017 at 04:55 pm, VK3HN wrote:
Although f's suggestion of a NE602 synchronous AM detector does sound intriguing. 


Re: Connection test between uBITX and digital communication program via cat communication #ubitx

peatmoss - ki6ssi
 

On Thu, Dec 28, 2017 at 06:30 pm, Ian Lee wrote:
rams, but I think there is much better way than that.
I will continue to add uBITX proprietary protocols in
Cool looking forward to it! Maybe Ashhar can give you access and you can create a branch and a pull request. That's how most projects merge changes.


Re: UbitX AM

 

Receiver or transceiver ?

Raj

At 28-12-2017, you wrote:
I am technically challenged and wonder what it would entail to have a Ubitx in AM mode
Art


Re: uBITX - Sensible mods #ubitx

 

You can find them easily, see your ebay..

They are plug in replacements. Only compatible display is 16x2 or 1602.

I like the black letters on white background! A little rare in India..

Raj


At 29-12-2017, you wrote:
On Wed, Dec 27, 2017 at 08:45 pm, <N6QWHAM@...> wrote:
While you are at it ditch the "seasick" green background LCD and install a cool blue LCD with white lettering.

Where does one obtain the cool blue LCD?  Is it a simple swap?


Re: Connection test between uBITX and digital communication program via cat communication #ubitx

Ian Lee
 

of course. I also used the protocol of FT-817 for compatibility with other programs, but I think there is much better way than that.
I will continue to add uBITX proprietary protocols in the future.



2017-12-29 11:05 GMT+09:00 M Garza <mgarza896@...>:

I think most will be interested.  This also solves the immediate issue of how to implement CAT, though, one could always do their own.

Marco - KG5PRT

On Thu, Dec 28, 2017 at 8:02 PM, Gordon Gibby <ggibby@...> wrote:

​Thank you Ian -- I will be very interested in this.

gordon



From: BITX20@groups.io <BITX20@groups.io> on behalf of Ian Lee <kd8cec@...>
Sent: Thursday, December 28, 2017 7:46 PM
To: BITX20@groups.io
Subject: [BITX20] Connection test between uBITX and digital communication program via cat communication #ubitx
 
Two days ago I wrote a CAT communication program for uBITX. 
It was tested through Ham Radio Deluxe and I posted that information through this group.
Perhaps the CAT communication test seems to have been completed with this posting.

I have tested using various software that is popular these days.
Posting about CAT communication testing is probably the last. But if you have amateur radio software that I did not think of, mail to me, Then I will test again.

1.WSJT-X
   uBITX(HF Tranceiver for Amateur radio) with wsjt-x software and CAT interface test
   https://www.youtube.com/watch?v=3olq1IzdEqM

   result : perfect, I was able to use wsjtx's rig control functions (Set, Get Frequency, PTT Control)

2.fldigi
  uBITX(HF Tranceiver for Amateur radio) with fldigi CAT interface test
  https://www.youtube.com/watch?v=efFZgSfqku4

   result : perfect, I was able to use fldigi's rig control functions (Set, Get Frequency, PTT Control)

3.JT65-HF
  uBITX(HF Tranceiver for Amateur radio) with jt65-HF and CAT interface test
  https://www.youtube.com/watch?v=agbhGcMBmo0

   result : perfect, I was able to use fldigi's rig control functions (Set, Get Frequency, PTT Control)

4.FTBCAT
  uBITX(HF Tranceiver for Amateur radio) with FTBCAT and CAT interface test
  https://www.youtube.com/watch?v=uXWUqsRJE_I

   result : perfect, I was able to use fldigi's rig control functions (Set, Get Frequency, PTT Control, vfoA / vfoB Change and more)

If you want to use ham radio deluxe to control uBITX and change the settings of uBITX, check out the previous post I registered.

Firmware for testing will be released shortly. If you do not like it after testing, you can always restore it with the original firmware so you do not have to worry.
There were various opinions in this group about source disclosure.
I will choose the best way to publish the source, apart from suggesting how to get some features into the original uBITX original source with github and how to publish the source separately.


--
Best 73
KD8CEC / Ph.D Ian lee
kd8cec@...
www.hamskey.com (my blog)




--
Best 73
KD8CEC / Ph.D ian lee
kd8cec@...
www.hamskey.com (my blog)


Re: Connection test between uBITX and digital communication program via cat communication #ubitx

Ian Lee
 

Thanks for reply Gordon.

After a little more testing, I will be posting how to upload and restore the firmware soon.

2017-12-29 11:02 GMT+09:00 Gordon Gibby <ggibby@...>:

​Thank you Ian -- I will be very interested in this.

gordon



From: BITX20@groups.io <BITX20@groups.io> on behalf of Ian Lee <kd8cec@...>
Sent: Thursday, December 28, 2017 7:46 PM
To: BITX20@groups.io
Subject: [BITX20] Connection test between uBITX and digital communication program via cat communication #ubitx
 
Two days ago I wrote a CAT communication program for uBITX. 
It was tested through Ham Radio Deluxe and I posted that information through this group.
Perhaps the CAT communication test seems to have been completed with this posting.

I have tested using various software that is popular these days.
Posting about CAT communication testing is probably the last. But if you have amateur radio software that I did not think of, mail to me, Then I will test again.

1.WSJT-X
   uBITX(HF Tranceiver for Amateur radio) with wsjt-x software and CAT interface test
   https://www.youtube.com/watch?v=3olq1IzdEqM

   result : perfect, I was able to use wsjtx's rig control functions (Set, Get Frequency, PTT Control)

2.fldigi
  uBITX(HF Tranceiver for Amateur radio) with fldigi CAT interface test
  https://www.youtube.com/watch?v=efFZgSfqku4

   result : perfect, I was able to use fldigi's rig control functions (Set, Get Frequency, PTT Control)

3.JT65-HF
  uBITX(HF Tranceiver for Amateur radio) with jt65-HF and CAT interface test
  https://www.youtube.com/watch?v=agbhGcMBmo0

   result : perfect, I was able to use fldigi's rig control functions (Set, Get Frequency, PTT Control)

4.FTBCAT
  uBITX(HF Tranceiver for Amateur radio) with FTBCAT and CAT interface test
  https://www.youtube.com/watch?v=uXWUqsRJE_I

   result : perfect, I was able to use fldigi's rig control functions (Set, Get Frequency, PTT Control, vfoA / vfoB Change and more)

If you want to use ham radio deluxe to control uBITX and change the settings of uBITX, check out the previous post I registered.

Firmware for testing will be released shortly. If you do not like it after testing, you can always restore it with the original firmware so you do not have to worry.
There were various opinions in this group about source disclosure.
I will choose the best way to publish the source, apart from suggesting how to get some features into the original uBITX original source with github and how to publish the source separately.


--
Best 73
KD8CEC / Ph.D Ian lee
kd8cec@...
www.hamskey.com (my blog)



--
Best 73
KD8CEC / Ph.D ian lee
kd8cec@...
www.hamskey.com (my blog)


Re: Connection test between uBITX and digital communication program via cat communication #ubitx

M Garza <mgarza896@...>
 

I think most will be interested.  This also solves the immediate issue of how to implement CAT, though, one could always do their own.

Marco - KG5PRT

On Thu, Dec 28, 2017 at 8:02 PM, Gordon Gibby <ggibby@...> wrote:

​Thank you Ian -- I will be very interested in this.

gordon



From: BITX20@groups.io <BITX20@groups.io> on behalf of Ian Lee <kd8cec@...>
Sent: Thursday, December 28, 2017 7:46 PM
To: BITX20@groups.io
Subject: [BITX20] Connection test between uBITX and digital communication program via cat communication #ubitx
 
Two days ago I wrote a CAT communication program for uBITX. 
It was tested through Ham Radio Deluxe and I posted that information through this group.
Perhaps the CAT communication test seems to have been completed with this posting.

I have tested using various software that is popular these days.
Posting about CAT communication testing is probably the last. But if you have amateur radio software that I did not think of, mail to me, Then I will test again.

1.WSJT-X
   uBITX(HF Tranceiver for Amateur radio) with wsjt-x software and CAT interface test
   https://www.youtube.com/watch?v=3olq1IzdEqM

   result : perfect, I was able to use wsjtx's rig control functions (Set, Get Frequency, PTT Control)

2.fldigi
  uBITX(HF Tranceiver for Amateur radio) with fldigi CAT interface test
  https://www.youtube.com/watch?v=efFZgSfqku4

   result : perfect, I was able to use fldigi's rig control functions (Set, Get Frequency, PTT Control)

3.JT65-HF
  uBITX(HF Tranceiver for Amateur radio) with jt65-HF and CAT interface test
  https://www.youtube.com/watch?v=agbhGcMBmo0

   result : perfect, I was able to use fldigi's rig control functions (Set, Get Frequency, PTT Control)

4.FTBCAT
  uBITX(HF Tranceiver for Amateur radio) with FTBCAT and CAT interface test
  https://www.youtube.com/watch?v=uXWUqsRJE_I

   result : perfect, I was able to use fldigi's rig control functions (Set, Get Frequency, PTT Control, vfoA / vfoB Change and more)

If you want to use ham radio deluxe to control uBITX and change the settings of uBITX, check out the previous post I registered.

Firmware for testing will be released shortly. If you do not like it after testing, you can always restore it with the original firmware so you do not have to worry.
There were various opinions in this group about source disclosure.
I will choose the best way to publish the source, apart from suggesting how to get some features into the original uBITX original source with github and how to publish the source separately.


--
Best 73
KD8CEC / Ph.D Ian lee
kd8cec@...
www.hamskey.com (my blog)