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New file uploaded to [email protected]

[email protected] Notification
 

Hello,

This email message is a notification to let you know that a file has been uploaded to the Files area of the [email protected] group.

File: raduino_new_library.ino

Uploaded By: Robert Lane

Description:
BitX40 ino sketch with minor changes to suit new SI5351 library v2

You can access this file at the URL:
/g/BITX20/files/BitX40%20Sketch%20using%20new%20SI5351%20Library%20v2/raduino_new_library.ino

Cheers,
The Groups.io Team
Re: Thoughts- de W8LM 3rd post

 

Don't get factory seconds on crystals for a ladder filter (I have no idea what ALLELETRONICS has). ?

They must be matched, and not just in frequency. ?

This sounds like a significant project, let us know how it goes. ?

I see three ways to do adjustable filtering:

? Mess with those crystal ladder filter caps. ?But could be difficult to do that while maintaining an optimum shape and minimizing insertion loss

? Have a dual conversion receiver, fiddle with one of the local osillators so the two crystal filters don't quite line up.

? Fiddle with the BFO frequency on a stock Bitx40 so the offending signal gets blocked by the crystal filter, clean up the result with an audio filter.


I might try that third option someday.


Jerry, KE7ER


On Fri, Jan 27, 2017 at 10:22 am, Lawrence Macionski wrote:

The point was ALLELECTRONICS have some very good deals than jameco-digikey-mouser . The "best deal" for me was 12 Mhz crystals at 5 for a dollar. I ordered 20..The BITX uses 4 in the crystal lattice filter..I want to play with perhaps 6-8 pole filters or even narrower or adjustable filtering. Something akin to: (CREDIT to ICOM 735 op manual)

?
Re: BITX40 PTT Noise

 

Try post 20828:

"Farhan mentioned this during his interview with Tom,?. He felt it was due to the cap C114 around the audio preamp Q16, holding the amp on for a bit when that rig is switched into transmit. I wouldn't be surprised that C110 might also be holding U1 on as well. ?He thought about placing a transistor across the cap to discharge it when going into transmit. Drive the transistor from the xmit?voltage."

?


On Fri, Jan 27, 2017 at 10:17 am, AndyH wrote:

I still can't find details of the 'transistor across the cap' mod.

?
Re: Thoughts- de W8LM 3rd post

Lawrence Macionski
 

The point was ALLELECTRONICS have some very good deals than jameco-digikey-mouser . The "best deal" for me was 12 Mhz crystals at 5 for a dollar. I ordered 20..The BITX uses 4 in the crystal lattice filter..I want to play with perhaps 6-8 pole filters or even narrower or adjustable filtering. Something akin to: (CREDIT to ICOM 735 op manual)


Re: BITX40 PTT Noise

 

Adding another relay apparently isn't a new idea, but one that apparently works.

I'm still trying to find details of the mods Uli, DF5SF created. ?I haven't yet found details in further message searches or in the files section here or on the Yahoo group.

/g/BITX20/message/3270?p=Created,,,20,1,0,0

There also appears to be the 'reed relay' mod:

/g/BITX20/message/10973?p=Created,,,20,1,0,0::Relevance,,ptt+noise,20,2,0,4103578

I still can't find details of the 'transistor across the cap' mod.

Message archeology in progress...hard hat area... ?hi hi

Andy
Re: Customer Noservice.

 

Also, try monitoring the 5v and 3.3v supplies at the Raduino with your voltmeter while twiddling that tune pot. ?Neither one should be moving.


On Fri, Jan 27, 2017 at 08:36 am, Jerry Gaffke wrote:

Could be that the Nano has a blown IO cell at A7, and is injecting current into what should be strictly an input pin. ?Though I don't fully understand how this would give the symptom you describe.

?
Re: RADNINO/VFO/DRO Not working

 

I had this exact problem with mine...a reload of the Arduino fixed it...for now.
Re: VFO & Digital Read out Does Not work (where do I get software for the

G4NQX
 

Hmm link didn't post.

Try again here?

Rob G4NQX

--
Just as you press send, do you notice the typso !
Re: VFO & Digital Read out Does Not work (where do I get software for the

 

RON,

Thank you again!?? I am off to work but I will pressure this later today...


BOB

K6YN
Re: RADNINO/VFO/DRO Not working

 

try reprogramming the raduino with the sketch.
- f

On 27-Jan-2017 9:57 pm, "B S" <saaint@...> wrote:

Recently assembled my BITX-40 with DIGITAL READOUT/ VFO
and was testing TX & RX...?? Seemed to be working OK. ?
?I turned it ON and OFF after about 1hr and the Digital Display
instead of reading out Frequency placed "rectangles" where
?the numbers were located..? It appears that the Raduino
VFO is no longer working.? I tested the main board by
replacing the RADNINO UNIT with the supplied L4 Coil and the
main board works as it is sup[pose to.? ?

Any suggestions on how to test or repair the RADNINO UNIT? ?
Could be hardware or software???




ANY SUGGESTIONS?

BOB

K6YN
Re: To many posts!!

G4NQX
 

John,

Do you NOT want emails?? If so click on 'Your? Groups' at the top. Go down to 'Manage my Subscriptions' click on the BitX20 emails and select No emails? This will stop emails.? Or alternatively there is a Daily Digest selection.

Rob G4NQX
Re: To many posts!!

 


under subscription tab in your profile

Larry
Re: To many posts!!

 

¿ªÔÆÌåÓý

At yahoo think they had an option to select the post, direct, condensed, daily, weekly.

?

Don¡¯t see this (yet) at groups.io.

?

Ron ¨C PA3FAT

?

Van: [email protected] [mailto:[email protected]] Namens davidzdeb@...
Verzonden: 27 January, 2017 18:04
Aan: [email protected]
Onderwerp: Re: [BITX20] To many posts!!

?

Kevin, you can make a "Forums" tab in your gmail interface that will catch all of these bitx40 messages and keep them out of your primary inbox. I just did this myself.
Re: To many posts!!

 

Kevin, you can make a "Forums" tab in your gmail interface that will catch all of these bitx40 messages and keep them out of your primary inbox. I just did this myself.
Re: VFO & Digital Read out Does Not work (where do I get software for the

G4NQX
 

Library for the si5351 here?? si5351 library


Rob
Re: VFO & Digital Read out Does Not work

 

I would add that the rig (main) power needs to be OFF. ?Let USB power the Nano. ?Depending on wiring, you will fry the regulator on the Nano. ?

Ask me how I know... (although not on a Raduino specifically). ?Its good practice to follow.


Larry
Re: VFO & Digital Read out Does Not work (where do I get software for the

G4NQX
 

Bob,

It's here.?

I'll find the libraries for you. I'll try and put up simple instructions of how to load the sketch.

Rob
Re: To many posts!!

 

The purpose of the group is to share all information (posts) that are run through the BITX group on .

You can create a filter that moves them somewhere else or you can unsubscribe and parse the group on but it's not likely that those of us who signed up for this group specifically because of this method of message delivery are going to vote to change it.

73 de K5KDT
Kevin
Re: VFO & Digital Read out Does Not work (where do I get software for the

 

Dear Rob,

THANK YOU!!!!??? I was hoping that software might be the problem.? Your instructions are clear except as where to down load the software I need to reload the Arduino...


Thank you Again!


BOB
K6YN
Re: VFO & Digital Read out Does Not work

G4NQX
 

I've seen this quite a few times with Arduino's and LCD.? Usually caused by a voltage spike at switch off or on. This corrupts the Arduino software sketch somehow.

They are quite rugged devices and reprogramming usually restores things.

The sketch is available somewhere in the files section.

If you are not familiar with programming Arduino's don't worry , for this one time operation it is relatively straightforward.? Download the Arduino IDE from the main Arduino site ??

You will need a mini usb to USB lead for the nano.? Start up the IDE by clicking on the downloaded sketch. Set the IDE to Nano in Tools menu. Select the port you have plugged the usb cable into.

On the blue(?} menu ribbon is a tick and a right arrow. Click the arrow and the sketch will be uploaded to the nano. When it has programmed it will start up straight away.

I would also suggest you check how you are switching the power.

Hope this helps.?

Rob G4NQX
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