Re: A more stable Bitx40 (fun with ceramic resonators)
Peter,
That is a really good idea. If I could find a CR around 4.7 to 4.8MHz to get it in the upper portion of the US 40 meter band it would be perfect. Thanks for the idea. Joel? KB6QVI
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On Dec 26, 2016, at 1:24 AM, parkerp@... [BITX20] < BITX20@...> wrote:
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If you don't wish to add a DDS to the Bitx40 (eg need low current consumption) I now have an alternative.?
A cheap as chips 4.92 MHz ceramic resonator can be substituted for L4 in the VFO and be pulled by over 100 kHz. ?
I discuss and demonstrate the ins and outs of this and other VXO approaches in this video.?
This would only have been possible due to a stroke of serendipity. ?Farhan opting for a 12 MHz IF, and someone deciding that 4.92 MHz was a good frequency to make some cheap ceramic resonators.?
73, Peter VK3YE
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Re: troubleshooting the bitx40 receiver - transmitter information
I don't have my Bitx40 yet, but what you are seeing might be the characteristic Bitx "pop" when it switches the audio over to the mike amp for transmit. ?If that's the case, then all might be well except the stuff around Q12. ?Perhaps it is just a faulty or mis-wired microphone.
---In BITX20@..., <vijaigeorge2005@...> wrote :?
when I transmit a sudden change in power level up and down needle only and when i speak no power needle reflection?
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I'm using Arduinio IDE V 1.6.10 and it won't compile on it either with it set for a Nano. I have all the latest Si5351 Libraries from NT7S and Adafruit, but that isn't what its complaining about anyway. It's hanging up on all reference to clk2 BFO. I don't know what to do, I'm no coder:-(
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On Dec 26, 2016, at 4:35 AM, Ashhar Farhan farhanbox@... [BITX20] < BITX20@...> wrote:
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the version 1.8 of arduino is complaining about const chars. can you fix that as well? i will pull all of that together and test on the boards. - f
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The hfsigs homepage now has a nice Christmas photo of the new Raduino driven Bitx40. ?Hope mine looks ?that good when it arrives! ?Also has the text: "who will be the first to the Raduino keyer?".?
I've never messed with an Arduino, but did cook up from scratch a full featured memory?keyer for the MSP430. ?That C code is in the files section of the AT_Sprint yahoo group under KE7ER/keyer. ?Includes lots of comments pertaining to real time code on a small processor,?much of which should apply to the Raduino. ?Feel free to borrow any or all of that code. ?If the Raduino runs out of room we could have a $0.50 msp430 off to the side for those that want a keyer.
Jerry, KE7ER?
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Todd,
You're on for a Bitx to Bitx QSO, i have done it several times with NT7S. This was done with my MST 400 at 7 watts.?
Joel KB6QVI
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On Dec 25, 2016, at 10:24 PM, 'Todd F. Carney / K7TFC' k7tfc@... [BITX20] < BITX20@...> wrote:
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On Dec 25, 2016 4:29 PM, "Joel Caulkins caulktel@... [BITX20]" wrote:
>>I have soldered RG-174 directly to both the Adafruit and Etherkit boards and had great results on the last three projects. I'm using a Etherkit board with a SMA RG-174 pigtail to connect to my BitX40 right now. In all cases I ?have not noticed any cross talk, but I always disable the unused outputs in the Sketch.<<
Thanks, Joel. Yes, that's the kind of experience I wanted to hear about. I like the idea of using the SMA connectors, and I recently bought a few dozen of male and female, but they are a bit costly relative to the Si5351 boards themselves. At $2.50 each for the PCB-edge females, they almost cost as much as the board. If they're not really necessary, others can avoid the expense.
No reflection on you, of course, but I don't find myself missing the Rogue Valley very much. I like it here in the Portland area--the land of W7ZOI and NT7S. Did you know there are still fully-stocked Radio Shack stores up here?
Once I get my BitX40 fully working, we should try for a BitX-to-BitX QSO. Even with lousy ionospherics, we ought to be able to manage 290 miles with 5 watts.
73,
Todd K7TFC
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Re: troubleshooting the bitx40 receiver - transmitter information
my bitx kit receiving is excellent but no audio out from transmitter? any troubleshooting guide I cheked tx out using power & swrmeter,? when I transmit a sudden change in power level up and down needle only and when i speak no power needle reflection
On Monday, December 26, 2016 6:54 AM, "wa9whd wa9whd@... [BITX20]" wrote:
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Dear Ashhar:
Any idea when the troubleshooting the BITX40 transmitter video will be out? When I switch to transmit the transmitter stays in receive mode with a tiny shift in frequency. It was working but I suspect I may have left the transmitter switch on (just a guess) and now switching to transmit does not engage the transmit side. Not sure if I killed the IFR510, 2n2219a, switching relay or something else. I believe your step by step diagnosis, similar to your excellent receiver troubleshooting video, may help me isolate and fix the problem. Thanks an update on the transmitter video release update.
73 - John - w4usf - Lutz, FL, USA
Sent from my iPhone
On Dec 26, 2016, at 07:36, Ashhar Farhan farhanbox@... [BITX20] < BITX20@...> wrote:
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it is not connected anywhere. it is hanging off the table
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Re: troubleshooting the bitx40 receiver
kent the other end u can put our finger to inject noise? dont connect speaker to red wire
On Monday, December 26, 2016 7:09 AM, "Joel Caulkins caulktel@... [BITX20]" wrote:
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Kent,
The red wire is just a wire acting as a antenna for injecting some signal into the circuit. The speaker is just hooked up to the BitX40 in normal fashion using the onboard audio amplifier. You could use a simple RF generator and a probe to do the same thing. ?Farhan is just using stray RF noise to test the different stages.
On Dec 26, 2016, at 4:52 AM, Kent Vanderploeg kvanderploeg@... [BITX20] < BITX20@...> wrote:
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I think we're misunderstanding each other. ? The red wire connects to a speaker.? What does the other end of the speaker connect to? We can't see the wiring in the video, ?so perhaps you're using the speaker circuit on the board to test with?? That's what we're trying to understand.?
Kent? W9WB?
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Re: troubleshooting the bitx40 receiver
Kent,
The red wire is just a wire acting as a antenna for injecting some signal into the circuit. The speaker is just hooked up to the BitX40 in normal fashion using the onboard audio amplifier. You could use a simple RF generator and a probe to do the same thing. ?Farhan is just using stray RF noise to test the different stages.
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On Dec 26, 2016, at 4:52 AM, Kent Vanderploeg kvanderploeg@... [BITX20] < BITX20@...> wrote:
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I think we're misunderstanding each other. ? The red wire connects to a speaker.? What does the other end of the speaker connect to? We can't see the wiring in the video, ?so perhaps you're using the speaker circuit on the board to test with?? That's what we're trying to understand.?
Kent? W9WB?
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Re: troubleshooting the bitx40 receiver - transmitter information
Dear Ashhar:
Any idea when the troubleshooting the BITX40 transmitter video will be out? When I switch to transmit the transmitter stays in receive mode with a tiny shift in frequency. It was working but I suspect I may have left the transmitter switch on (just a guess) and now switching to transmit does not engage the transmit side. Not sure if I killed the IFR510, 2n2219a, switching relay or something else. I believe your step by step diagnosis, similar to your excellent receiver troubleshooting video, may help me isolate and fix the problem. Thanks an update on the transmitter video release update.
73 - John - w4usf - Lutz, FL, USA
Sent from my iPhone
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On Dec 26, 2016, at 07:36, Ashhar Farhan farhanbox@... [BITX20] < BITX20@...> wrote:
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it is not connected anywhere. it is hanging off the table
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Re: troubleshooting the bitx40 receiver
On Monday, December 26, 2016 9:47 AM, "vijai george vijaigeorge2005@... [BITX20]" wrote:
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Dear farahan have u uploaded bitx transmitter troubleshooting? kindly send me link
On Monday, December 26, 2016 5:18 AM, "'Dale Hammer' DaleHammer@... [BITX20]" wrote:
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Kent, I am pretty sure the speaker you see and hear is connected to the speaker connections on the board.?? The red wire Farhan is holding is not connected to anything and Farhan is just using it to inject noise into the board at the various places he describes for troubleshooting.? The other end is as he describes, just dangling off the table. ? 73, Dale? K9NN ? From: BITX20@... [mailto:BITX20@...]
Sent: Monday, December 26, 2016 7:52 AM
To: BITX20@...
Subject: Re: [BITX20] troubleshooting the bitx40 receiver ? ? I think we're misunderstanding each other. ? The red wire connects to a speaker.? What does the other end of the speaker connect to? We can't see the wiring in the video, ?so perhaps you're using the speaker circuit on the board to test with?? That's what we're trying to understand.? ? ? it is not connected anywhere. it is hanging off the table ? ? I second KF7RSF's comment. ? Can you please tell us what the red wire /speaker connection is you are using? It's not clear on the video. ? ? Ashhar, In the receive troubleshooting video, what is the unseen end of the red insulated wire connected to? Or nothing? ? ? ? i have put together a video on troubleshooting the bitx40 receiver. keep the circuit handy while you use the method outlined in the video.
? ?
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Re: troubleshooting the bitx40 receiver
Dear farahan have u uploaded bitx transmitter troubleshooting? kindly send me link
On Monday, December 26, 2016 5:18 AM, "'Dale Hammer' DaleHammer@... [BITX20]" wrote:
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Kent, I am pretty sure the speaker you see and hear is connected to the speaker connections on the board.?? The red wire Farhan is holding is not connected to anything and Farhan is just using it to inject noise into the board at the various places he describes for troubleshooting.? The other end is as he describes, just dangling off the table. ? 73, Dale? K9NN ?
From: BITX20@... [mailto:BITX20@...]
Sent: Monday, December 26, 2016 7:52 AM
To: BITX20@...
Subject: Re: [BITX20] troubleshooting the bitx40 receiver ? ? I think we're misunderstanding each other. ? The red wire connects to a speaker.? What does the other end of the speaker connect to? We can't see the wiring in the video, ?so perhaps you're using the speaker circuit on the board to test with?? That's what we're trying to understand.? ? ? it is not connected anywhere. it is hanging off the table ? ? I second KF7RSF's comment. ? Can you please tell us what the red wire /speaker connection is you are using? It's not clear on the video. ? ? Ashhar, In the receive troubleshooting video, what is the unseen end of the red insulated wire connected to? Or nothing? ? ? ? i have put together a video on troubleshooting the bitx40 receiver. keep the circuit handy while you use the method outlined in the video.
? ?
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This email has been checked for viruses by Avast antivirus software.
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Re: troubleshooting the bitx40 receiver
Kent, I am pretty sure the speaker you see and hear is connected to the speaker connections on the board.?? The red wire Farhan is holding is not connected to anything and Farhan is just using it to inject noise into the board at the various places he describes for troubleshooting.? The other end is as he describes, just dangling off the table. ? 73, Dale? K9NN ?
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From: BITX20@... [mailto:BITX20@...]
Sent: Monday, December 26, 2016 7:52 AM
To: BITX20@...
Subject: Re: [BITX20] troubleshooting the bitx40 receiver? ? I think we're misunderstanding each other. ? The red wire connects to a speaker.? What does the other end of the speaker connect to? We can't see the wiring in the video, ?so perhaps you're using the speaker circuit on the board to test with?? That's what we're trying to understand.? ? On Dec 26, 2016 6:36 AM, "Ashhar Farhan farhanbox@... [BITX20]" <BITX20@...> wrote: ? it is not connected anywhere. it is hanging off the table ? On 26-Dec-2016 6:03 pm, "Kent Vanderploeg kvanderploeg@... [BITX20]" <BITX20@...> wrote: ? I second KF7RSF's comment. ? Can you please tell us what the red wire /speaker connection is you are using? It's not clear on the video. ? On Dec 25, 2016 3:33 PM, "Thomas Noel tnoel@... [BITX20]" <BITX20@...> wrote: ? Ashhar, In the receive troubleshooting video, what is the unseen end of the red insulated wire connected to? Or nothing? ? ? ? i have put together a video on troubleshooting the bitx40 receiver. keep the circuit handy while you use the method outlined in the video.
? ?
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Probably SI5351 library needs to be 1.1.2 (manage library, filter on SI5351 and select previous version and install. V2 is beta and uses different parameters for several functions).
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Ron ¨C PA3FAT
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Van: BITX20@... [mailto:BITX20@...]
Verzonden: 26 December, 2016 13:35
Aan: BITX20@...
Onderwerp: Re: [BITX20] Re: Raduino code
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the version 1.8 of arduino is complaining about const chars. can you fix that as well? i will pull all of that together and test on the boards.
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On 26-Dec-2016 4:46 pm, "scytale30@... [BITX20]" <BITX20@...> wrote:
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I downloaded the repository and installed the Si5351 library.? I discovered that the sketch does not compile with the latest version of the Si5351 library, version 2.?
I've just submitted a pull request on GitHub which adds instructions to the README which describe the installation process for version 1.1.1 of the Si5351 library.
Looking forward to experimenting with the code.
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Re: troubleshooting the bitx40 receiver
I think we're misunderstanding each other. ? The red wire connects to a speaker.? What does the other end of the speaker connect to? We can't see the wiring in the video, ?so perhaps you're using the speaker circuit on the board to test with?? That's what we're trying to understand.?
Kent? W9WB?
On Dec 26, 2016 6:36 AM, "Ashhar Farhan farhanbox@... [BITX20]" < BITX20@...> wrote:
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it is not connected anywhere. it is hanging off the table
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Re: troubleshooting the bitx40 receiver
it is not connected anywhere. it is hanging off the table
On 26-Dec-2016 6:03 pm, "Kent Vanderploeg kvanderploeg@... [BITX20]" < BITX20@...> wrote:
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I second KF7RSF's comment. ? Can you please tell us what the red wire /speaker connection is you are using? It's not clear on the video.
Kent? W9WB?
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the version 1.8 of arduino is complaining about const chars. can you fix that as well? i will pull all of that together and test on the boards. - f
On 26-Dec-2016 4:46 pm, " scytale30@... [BITX20]" < BITX20@...> wrote:
?
I downloaded the repository and installed the Si5351 library.? I discovered that the sketch does not compile with the latest version of the Si5351 library, version 2.?
I've just submitted a pull request on GitHub which adds instructions to the README which describe the installation process for version 1.1.1 of the Si5351 library.
Looking forward to experimenting with the code.
Matt
VK6MR - AI6SO
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Re: troubleshooting the bitx40 receiver
I second KF7RSF's comment. ? Can you please tell us what the red wire /speaker connection is you are using? It's not clear on the video.
Kent? W9WB?
On Dec 25, 2016 3:33 PM, "Thomas Noel tnoel@... [BITX20]" < BITX20@...> wrote:
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Ashhar,
In the receive troubleshooting video, what is the unseen end of the red insulated wire connected to? Or nothing?
i have put together a video on troubleshooting the bitx40 receiver. keep the circuit handy while you use the method outlined in the video.
- f
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Is the raduino included with the BITX pre-programmed?
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Re: A more stable Bitx40 (fun with ceramic resonators)
Nice idea Peter!
Increase in value of C96 will give you a little more range. I will try
adding a parallel MV209 to D9 to increase the tuning capacitance range. I
have a bunch of them in the box!
Cheers
Raj (vu2zap)
At 26-12-2016, you wrote:
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?
If you don't wish to add a DDS to the Bitx40 (eg need low current
consumption) I now have an alternative.
A cheap as chips 4.92 MHz ceramic resonator can be substituted for L4 in
the VFO and be pulled by over 100 kHz.?
I discuss and demonstrate the ins and outs of this and other VXO
approaches in this video.
This would only have been possible due to a stroke of serendipity.?
Farhan opting for a 12 MHz IF, and someone deciding that 4.92 MHz was a
good frequency to make some cheap ceramic resonators.
73, Peter VK3YE
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Joel Caulkins/N6ALT
Raj vu2zap