Date   
Re: WTB 680nF Inductors #parts

 

I've tried similar ones and they DONT work. The issue with the original toroids is that
their leads seem to pick up TX signal and cause a mess.

Change the relays and you are almost there. Use SHIELDED smd insuctors and you
will get reduction in spurs. Any old inductor there wont do.

If the 680nh does not help then you have the wrong type.

Raj


At 21-09-19, you wrote:
I bought these, and reasonably-shipped:

https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F352066947527


Ted
k3rta

Re: Contrary Raduino

Ashhar Farhan
 

It looks like your potentiometer doesnt have a +5v connected. Can you confirm that the pot's center pin changes voltage smoothly between 0 to 5v as you tune it?
- f

On Sat 21 Sep, 2019, 10:07 PM JD Hill, <w9jdh.qrp@...> wrote:
Hello to the group. This is my first post here.
I am building A BITX40 and I am having a lot of trouble with it and I am about to believe it is a bad Raduino.
Regardless whether I hook it up via the USB port or by connection to a 12 volt supply. The display comes on but the only thing that is displayed is: VFO A: 6.9980 Mhz.

It draws about 135 mA but the function switch and the 10 turn tuning pot do not work.
This is my first experience with a microprocessor in my 43 years of being licensed. I have spent many hours building and trouble shooting,  but this has me lost.

TIA
Jimmy,. W9JDH


Re: Calibration #calibration

d.maccallum@...
 

Adrien, thank you for this excellent information. I will be downloading V 1.2 or higher firmware and use your method for calibration. Should have my programming cable for the nano by end of next week.

TNX FER THE HELP 73

Dave, N8KZ

Collection of knowledge about CEC firmware? #firmware

riz-qcx@...
 

I have a v5 µBITX that I've been fiddling around with for a while, and it looks like just about all the stuff I'm interested in being able to do with it will be better-enabled with the CEC firmware.  So, I got v1.200 and built it (I still have the stock parallel display) because I could not for the life of me make any of the hex loaders work - but was able to build and load it using the Arduino IDE.

So far, so good.  There are a number of issues with it that I expect will all get worked out eventually (for example, the CW filters make a CW signal barely audible - I've seen allusions to that issue on this board, and to there being settings which help, but I have been unable to find those settings.

I also just grabbed the uBITX manager software, v1.110 - I was disappointed to find out it was a Windows program, but managed to dig up an old laptop.  First thing I did was read the settings and save them - but some of this stuff looks Wrong.  (Example - "LSB calibration" is 0, but "USB calibration" is 11057115.  Not sure what these are...  Also, Si5351 I2C address is set to 0xff, while there's a warning in red which says "Warning: default value:0 or 0x60".  Worrisome!

Anyway, this brings me around to:  is there a repository for knowledge about this firmware and what all the settings are?  I found a "User Manual" for version 1.072, which helped, but the pieces I am particularly interested in are either not implemented yet, or just not written about.  (Example: how is the WSPR stuff set up and used?  I would love to know!)   I've looked around hamskey.com and ubitx.net, but it's all pretty fragmented.  Failing that, can anyone point me to threads here which would help?

I suppose if I need to, I can look through the source code, but I bet other folks have gone through all this before.  :)  Did I also forget to mention that I don't have a lot of direct experience with HF rigs yet?  :) :) :) It's also complicated by the fact that I live smack in the middle of San Francisco with all the noise that entails, so even with the antenna I've got set up (20m EFHW) I can't hear a lot


Thanks in advance,

+jeff AJ6IY

Re: Calibration #calibration

d.maccallum@...
 

Thank you for saving this old dog from barking up the wrong tree. I will down load V 1.2, Big help thanks again...

I have a dummy load and a good comm receiver to check the ubitx tx with. The TX and RX are working but the BFO adjustment for clear audio is very bad. cw works very nice and clear!

OK big help CUL 73

Dave N8KZ

Re: WTB 680nF Inductors #parts

Dale Hardin
 

MadRadioModder, that would be too easy.  I am not an electronics expert, only a builder and tinkerer.  I will learn more from modding the V3 than I will ever learn from assembling the V5.  Just my thing, I guess.  I just enjoy the build.  Funny comment, though.  Dale

On Sat, Sep 21, 2019 at 6:09 PM MadRadioModder <madradiomodder@...> wrote:

An easier fix is to sell the V3 and buy a V5.  Boom.  Done.

 

 

From: BITX20@groups.io [mailto:BITX20@groups.io] On Behalf Of Dale Hardin
Sent: Saturday, September 21, 2019 5:10 PM
To: BITX20@groups.io
Subject: Re: [BITX20] WTB 680nF Inductors #parts

 

I think the whole smd inductor - alternate relay thing has been discussed to death.  Seems there are two options, inductor-relay fix or off-board relay fix.  I can do the inductor-relay fix without cutting and pasting a new board in (sorry Gordon Gibby).  If that doesn't do the job on my board, then I will spring for the off-board relays.  I do want to use the very same inductors that work, but I don't want to buy 100 of them, hence my request.  I'm sure there are thousands available here on the group.  You didn't say what solution you found to the spurs issue.  Did you go the off-board relay way?  Thanks for your comment. Dale

 

On Sat, Sep 21, 2019 at 4:07 PM Jonas Sanamon <sanamon@...> wrote:

Hi Dale,

 

Not to discourage You from doing this,  but my experience with replacing the toroids with the 680nF SMDs showed no change whatsoever. I have photos of the spectrum analyser screens before and after and they are pretty much identical.  But maybe this is because i haven't done the relay replacement modification yet...?

 

Best Regards,

Jonas - SM4VEY

 

Den lör 21 sep. 2019 kl 13:22 skrev Dale Hardin <joe.dale.hardin@...>:

Anyone have surplus 680nF inductors for V3 fix of spurious signals?  If so, contact me privately to discuss details.
Thanks, Dale
--
Dale Hardin, KS4NS
Elberta, AL


 

--

Dale Hardin

24750 State St. Unit 487

Elberta, AL 36530
251-597-9256


--
Dale Hardin, KS4NS
Elberta, AL


Virus-free. www.avg.com

--

…_. _._



--
Dale Hardin
24750 State St. Unit 487
Elberta, AL 36530
251-597-9256

--
Dale Hardin, KS4NS
Elberta, AL

Re: WTB 680nF Inductors #parts

Dale Hardin
 

Yeah, whats a few farads or henrys between friends.  We all know what I am looking for nomatter how I say it.  You're also right that this fix only address harmonics, not spurs. I knew that. That's what I get from using the laptop at home rather than the desktop in the office where my info is.  My memory isn't what it used to be and I'll be the first to admit it.  Beats the alternative though.  I've got to do the V5 filter fix also.  I think I have all the parts for that.  Regards, Dale

On Sat, Sep 21, 2019 at 5:39 PM Evan Hand <elhandjr@...> wrote:
Sorry to nit pick, however I do not know where to get 680nF inductors, only 680nH inductors.  I assuming that you do mean the 680 nanoHenry inductors that were suggested by Raj, vu2zap in this thread:
https://groups.io/g/BITX20/topic/27154925#60568

That is unless I missed something about a part number.

Also, the relay and or off board filters do not address the spurs issues, only the harmonics issues.  The 2 spur fixes are either the shielded SMD inductors per Raj, or the Ashhar v5 fix with an LCL low pass filter before the last mixer in the transmitter chain.

It should be noted that there seems to be less harmonics when using SSB, but higher spurs on the upper bands.  For CW, Harmonics on the lower bands, and less on upper bands with little reported spurs on any band. 

This goes along with what I have been able to measure, though I do not trust the spurs testing that I did due to a poor RBW on the spectrum analyzers that I had at my disposal at the time.

73
Evan
AC9TU



--
Dale Hardin
24750 State St. Unit 487
Elberta, AL 36530
251-597-9256

--
Dale Hardin, KS4NS
Elberta, AL

Re: WTB 680nF Inductors #parts

MadRadioModder
 

An easier fix is to sell the V3 and buy a V5.  Boom.  Done.

 

 

From: BITX20@groups.io [mailto:BITX20@groups.io] On Behalf Of Dale Hardin
Sent: Saturday, September 21, 2019 5:10 PM
To: BITX20@groups.io
Subject: Re: [BITX20] WTB 680nF Inductors #parts

 

I think the whole smd inductor - alternate relay thing has been discussed to death.  Seems there are two options, inductor-relay fix or off-board relay fix.  I can do the inductor-relay fix without cutting and pasting a new board in (sorry Gordon Gibby).  If that doesn't do the job on my board, then I will spring for the off-board relays.  I do want to use the very same inductors that work, but I don't want to buy 100 of them, hence my request.  I'm sure there are thousands available here on the group.  You didn't say what solution you found to the spurs issue.  Did you go the off-board relay way?  Thanks for your comment. Dale

 

On Sat, Sep 21, 2019 at 4:07 PM Jonas Sanamon <sanamon@...> wrote:

Hi Dale,

 

Not to discourage You from doing this,  but my experience with replacing the toroids with the 680nF SMDs showed no change whatsoever. I have photos of the spectrum analyser screens before and after and they are pretty much identical.  But maybe this is because i haven't done the relay replacement modification yet...?

 

Best Regards,

Jonas - SM4VEY

 

Den lör 21 sep. 2019 kl 13:22 skrev Dale Hardin <joe.dale.hardin@...>:

Anyone have surplus 680nF inductors for V3 fix of spurious signals?  If so, contact me privately to discuss details.
Thanks, Dale
--
Dale Hardin, KS4NS
Elberta, AL


 

--

Dale Hardin

24750 State St. Unit 487

Elberta, AL 36530
251-597-9256


--
Dale Hardin, KS4NS
Elberta, AL


Virus-free. www.avg.com

--

…_. _._

Re: WTB 680nF Inductors #parts

Evan Hand
 

Sorry to nit pick, however I do not know where to get 680nF inductors, only 680nH inductors.  I assuming that you do mean the 680 nanoHenry inductors that were suggested by Raj, vu2zap in this thread:
https://groups.io/g/BITX20/topic/27154925#60568

That is unless I missed something about a part number.

Also, the relay and or off board filters do not address the spurs issues, only the harmonics issues.  The 2 spur fixes are either the shielded SMD inductors per Raj, or the Ashhar v5 fix with an LCL low pass filter before the last mixer in the transmitter chain.

It should be noted that there seems to be less harmonics when using SSB, but higher spurs on the upper bands.  For CW, Harmonics on the lower bands, and less on upper bands with little reported spurs on any band. 

This goes along with what I have been able to measure, though I do not trust the spurs testing that I did due to a poor RBW on the spectrum analyzers that I had at my disposal at the time.

73
Evan
AC9TU

Re: WTB 680nF Inductors #parts

Dale Hardin
 

Were you able to test to see if they worked?  Dale

On Sat, Sep 21, 2019 at 1:14 PM Ted via Groups.Io <k3rta=yahoo.com@groups.io> wrote:
I bought these, and reasonably-shipped:



Ted
k3rta





--
Dale Hardin
24750 State St. Unit 487
Elberta, AL 36530
251-597-9256

--
Dale Hardin, KS4NS
Elberta, AL

Re: WTB 680nF Inductors #parts

Dale Hardin
 

I think the whole smd inductor - alternate relay thing has been discussed to death.  Seems there are two options, inductor-relay fix or off-board relay fix.  I can do the inductor-relay fix without cutting and pasting a new board in (sorry Gordon Gibby).  If that doesn't do the job on my board, then I will spring for the off-board relays.  I do want to use the very same inductors that work, but I don't want to buy 100 of them, hence my request.  I'm sure there are thousands available here on the group.  You didn't say what solution you found to the spurs issue.  Did you go the off-board relay way?  Thanks for your comment. Dale

On Sat, Sep 21, 2019 at 4:07 PM Jonas Sanamon <sanamon@...> wrote:
Hi Dale,

Not to discourage You from doing this,  but my experience with replacing the toroids with the 680nF SMDs showed no change whatsoever. I have photos of the spectrum analyser screens before and after and they are pretty much identical.  But maybe this is because i haven't done the relay replacement modification yet...?

Best Regards,
Jonas - SM4VEY

Den lör 21 sep. 2019 kl 13:22 skrev Dale Hardin <joe.dale.hardin@...>:
Anyone have surplus 680nF inductors for V3 fix of spurious signals?  If so, contact me privately to discuss details.
Thanks, Dale
--
Dale Hardin, KS4NS
Elberta, AL



--
Dale Hardin
24750 State St. Unit 487
Elberta, AL 36530
251-597-9256

--
Dale Hardin, KS4NS
Elberta, AL

Re: WTB 680nF Inductors #parts

Jonas Sanamon
 

Hi Dale,

Not to discourage You from doing this,  but my experience with replacing the toroids with the 680nF SMDs showed no change whatsoever. I have photos of the spectrum analyser screens before and after and they are pretty much identical.  But maybe this is because i haven't done the relay replacement modification yet...?

Best Regards,
Jonas - SM4VEY

Den lör 21 sep. 2019 kl 13:22 skrev Dale Hardin <joe.dale.hardin@...>:

Anyone have surplus 680nF inductors for V3 fix of spurious signals?  If so, contact me privately to discuss details.
Thanks, Dale
--
Dale Hardin, KS4NS
Elberta, AL

Re: WTB 680nF Inductors #parts

Ted
 

Contrary Raduino

JD Hill
 

Hello to the group. This is my first post here.
I am building A BITX40 and I am having a lot of trouble with it and I am about to believe it is a bad Raduino.
Regardless whether I hook it up via the USB port or by connection to a 12 volt supply. The display comes on but the only thing that is displayed is: VFO A: 6.9980 Mhz.

It draws about 135 mA but the function switch and the 10 turn tuning pot do not work.
This is my first experience with a microprocessor in my 43 years of being licensed. I have spent many hours building and trouble shooting,  but this has me lost.

TIA
Jimmy,. W9JDH


Re: I2C display plus other I2C devices, 3.3V #ubitx

johnrof@...
 

Easiest soln  is to use a two chan level converter (~50 cents). 
You can also make a 3.3 v device the master, with pullups to 3.3 v source.  Arduino will read 3.3 v as high.  

Re: I2C display plus other I2C devices, 3.3V #ubitx

Jim Sheldon
 

Our group, the TSW actually had this working long before CEC used it and the only problem you might run into is the Si5351 can accept no more than a nominal 3.3V signal level on the I2C lines.  If you connect a device to the I2C bus that has pullups to the 5V supply on the data lines, you risk destroying the 5351.  Address wise, as long as you stay away from the 5351's I2C address, you can have more than one thing operating on the bus.  

Jim, W0EB

------ Original Message ------
From: "Evan Hand" <elhandjr@...>
Sent: 9/21/2019 8:38:00 AM
Subject: Re: [BITX20] I2C display plus other I2C devices, 3.3V #ubitx

I have not yet done the mod, however KD8CEC at Hamskey.com has used the I2C line to link in second displays and Nano's for increased functionality.  To me that would imply that you can use the link to the Si5251.

FWIW
73
Evan
AC9TU

Re: I2C display plus other I2C devices, 3.3V #ubitx

Evan Hand
 

I have not yet done the mod, however KD8CEC at Hamskey.com has used the I2C line to link in second displays and Nano's for increased functionality.  To me that would imply that you can use the link to the Si5251.

FWIW
73
Evan
AC9TU

I2C display plus other I2C devices, 3.3V #ubitx

Rob French (KC4UPR)
 

Hello, I have one of the 20x4 LCD displays on my uBITX, with the I2C backup to free up pins.  I removed the two pull-up resistors from the (5V) backup, so that I could use it in conjunction with the SI5351.  

Question... so I can't recall which pull-up is now getting used to pull the I2C lines up to 3.3V, but I'm wondering, can I add another I2C device to this bus, without adding any other conversions?  

Specifically, I would like to use I2C to communicate between the Raduino and a Teensy 3.2 that I'm using for DSP audio filtering.  I was going to use serial, but I decided it was too much of a pain to try to interrupt the CAT stream, so I figured I'd try I2C instead.  But I want to make sure I can actually add the Teensy to the mix.

Thanks!
-Rob

WTB 680nF Inductors #parts

Dale Hardin
 

Anyone have surplus 680nF inductors for V3 fix of spurious signals?  If so, contact me privately to discuss details.
Thanks, Dale
--
Dale Hardin, KS4NS
Elberta, AL

Re: [ENA1J-B28-L00128L/

John Scherer
 


Yes, those encoders are pricey.  I got mine for like $4 each from a surplus electronics shop in San Diego.  Though, having used them now, I'd still be tempted to use them even if I had to buy one new.  The issue most people have with using high ppr encoders with the uBitx is the processor is pretty slow and the encoder routines in the base Raduino code are not interrupt driven.  Also using digitalReadFast to read the encoders helps.  If you get much beyond a single 400/600 ppr encoder and you will likely need a faster processor to do it.  I'm using the BITeensio board with a Teensy 3.6 processor.  I've tested that board with two 1024 ppr optical  encoders with no problems.  Those encoders would be of little use to the uBitx thought, without some division ;-)

--
John - N0CTL - Fulltime RV in a 40' motorhome