Re: Multiband bitX40 questions
Thanks Jack, it looks like I will have to get serious about learning programming arduino.?
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Mike VK3XL
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Re: BITX40 damaged on arrival
A drop or 2 of hot glue should not make too much difference.
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Mike VK3XL
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Re: BITX40 damaged on arrival
On 02/05/17 16:02, John Sharpe wrote: Is it possible to stick the toroids to the board with hot glue or
epoxy? Or does that mess up the inductance? Mine were glued down. S
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Re: BITX40 damaged on arrival
My BITX40 arrived in good nick - but I wonder If I can make the board more drop proof.
Is it possible to stick the toroids to the board with hot glue or epoxy? Or does that mess up the inductance?
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On 2 May 2017, at 1:50 pm, bands11 < bands11@...> wrote:
Hi folks ¡ I received my BITX40 today (my 3rd) and found that L1 had been torn loose from the board. ?It was rattling around in the plastic box. ?After examining the way the board, Raduino, and connecting wires had been packed in the box, it seemed to me that the Raduino had been forced into the plastic container. ?It was right over L1, L2, and L3. ?It¡¯s not a stretch to believe that in packing the Raduino, it had been forced into the box in such a way as to tear L1 loose from the board. ?This is NOT an assembly, testing, or shipping problem! ?It appears that it is a packing problem. ?Who knew??
I suggest that Farhan caution his packers to go a little lighter on the "forcing things to fit¡± part of packing.
I have attempted a repair ¡ it is ugly ¡ but if it works I¡¯m fine with it (the leads left on L1 were pretty short).
All in all, I¡¯m a satisfied customer. ?By the way, it was a 10-11 day ship time. ? :-)
Bob Harbrecht KE7QEQ
I will stop at nothing to reach my objective, but only because my brakes are defective.? ?Ashley Brilliant
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BITX40 damaged on arrival
Hi folks ¡ I received my BITX40 today (my 3rd) and found that L1 had been torn loose from the board. ?It was rattling around in the plastic box. ?After examining the way the board, Raduino, and connecting wires had been packed in the box, it seemed to me that the Raduino had been forced into the plastic container. ?It was right over L1, L2, and L3. ?It¡¯s not a stretch to believe that in packing the Raduino, it had been forced into the box in such a way as to tear L1 loose from the board. ?This is NOT an assembly, testing, or shipping problem! ?It appears that it is a packing problem. ?Who knew??
I suggest that Farhan caution his packers to go a little lighter on the "forcing things to fit¡± part of packing.
I have attempted a repair ¡ it is ugly ¡ but if it works I¡¯m fine with it (the leads left on L1 were pretty short).
All in all, I¡¯m a satisfied customer. ?By the way, it was a 10-11 day ship time. ? :-)
Bob Harbrecht KE7QEQ
I will stop at nothing to reach my objective, but only because my brakes are defective.? ?Ashley Brilliant
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Re: Simple audio muting circuit
I built this up today and it made a world of difference. I used a 470K and installed R4 in case I want to add the side tone later. Thanks! Jeff N9ARZ
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Re: Multiband bitX40 questions
From: vk3xl via Groups.Io <vk3xl@...>
To: [email protected]
Sent: Monday, May 1, 2017 9:13 PM
Subject: [BITX20] Multiband bitX40 questions
Hi all, I have 2 BitX40s one on 40 meters and the other on 80 meters.Both are working ok, but I have plans to convert one of them to multi band operation. The hardware modification of the BitX40 board is already well documented on various sites, so that should not be too much of an issue.? There are a number of issues I need to resolve mainly to do with the raduino programming. Firstly I am a complete novice at arduino programming, but I can upload a sketch to the raduino ok. so to my questions 1. How easy / difficult would it be to put some lines of code into an existing sketch to facilitate band changes? What hardware modifications would be required? say a momentary contact button like the function button used with the latest sketches (v1.09 etc). Say at the end of the tuning pot range instead of stepping 50 Khz up or down, when the button is pressed the rig steps up or down to preset bands ie 160, 80, 40, 20 etc. The Arduino family of microcontrollers all have I/O pins that can send out a 5V signal to an external device (e.g., transistor, relay, IC, etc.) under program control. ? 2. Would it be possible for the sketch to automatically change sideband to USB for frequencies above 10Mhz??The default sideband could be set based upon compile-time settings (e.g., 40L, 20U, etc) which could be interpreted in code to select the sideband. 3. Would it be possible to have a logic output that would could be used to drive relays to switch in and out various band pass filters used for the other than 40 meter band? Same as above. Chapter 11 in Arduino Projects for Amateur Radio shows how you can interface an Arduino with a relay.
Jack, W8TEE
Thanks in advance.
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Mike VK3XL
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If you are looking for BitX40 QSOs at any time you can go to this site
and list your frequency and call and "BitX40"or look for other BitX users who may be on the air.? Will be looking for you. Willy W1LY
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Multiband bitX40 questions
Hi all, I have 2 BitX40s one on 40 meters and the other on 80 meters.Both are working ok, but I have plans to convert one of them to multi band operation. The hardware modification of the BitX40 board is already well documented on various sites, so that should not be too much of an issue.? There are a number of issues I need to resolve mainly to do with the raduino programming. Firstly I am a complete novice at arduino programming, but I can upload a sketch to the raduino ok. so to my questions 1. How easy / difficult would it be to put some lines of code into an existing sketch to facilitate band changes? What hardware modifications would be required? say a momentary contact button like the function button used with the latest sketches (v1.09 etc). Say at the end of the tuning pot range instead of stepping 50 Khz up or down, when the button is pressed the rig steps up or down to preset bands ie 160, 80, 40, 20 etc. 2. Would it be possible for the sketch to automatically change sideband to USB for frequencies above 10Mhz? 3. Would it be possible to have a logic output that would could be used to drive relays to switch in and out various band pass filters used for the other than 40 meter band?
Thanks in advance.
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Mike VK3XL
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The function button needed for the new Raduino software is connected to the orange wire on the Raduino 8 pin connector. It is wired so as to momentarily connect it to the Raduino circuit ground.
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Almost any Arduino tutorial will tell you how to use the IDE and program one of the Arduino chips. Not sure which buttons you are referring to.
Jack, W8TEE
From: "amer1337@..." <amer1337@...>
To: [email protected]
Sent: Monday, May 1, 2017 4:22 PM
Subject: [BITX20] buttons
any writeups on how to flash new firmware and add the function button(s?)? also what do they do?
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Re: European Bitx Net - Tonight (1 May) 1900UTC 7175 kHz
... Well that was a great first start. Hopefully, we can encourage a few more to try and join us next time Monday night. I think we might need to try and find a better frequency - as Allard noted we had a strong Broadcast station to contend with and a great deal of co-channel QRM. Delighted to work two x 2-Way Bitx QSO with Pascal F6EHP and Adi YO2LIW (thank you both). ?Allard, Mike and Luke sorry didn't hear you at all. Looking forward to next Monday.
73 Carl M0ICR London
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what to read before EMRFD? (WAS: Re: Farhan to attend FDIM)
Farhan, Maybe a stretch maybe not. ;) ?I agree with you, EMRFD is the basis for an awful lot of the interesting designs. I am wondering, though, what books you would recommend as texts to dig into before EMRFD, especially for beginners. ? 73 de bill PS - I am sorry I can't make FDIM. I hope your presentation will be available as slides or audio afterwards...
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Re: European Bitx Net - Tonight (1 May) 1900UTC 7175 kHz
Congrats Luke!
Hopefully I'll have more luck next time.
Good to hear that v1.09 works well for you.
73, Allard PE1NWL
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On Mon, May 1, 2017 22:22, ON2AAV wrote: Allard,
Has a nice qso with Mike G4KXQ, all of that using V1.09 :)
Thanks
73's
Luke
ON2AAV
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The latest version can be downloaded from
See the README document at
The user instructions are at
73, Allard PE1NWL
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On Mon, May 1, 2017 22:22, amer1337@... wrote: any writeups on how to flash new firmware and add the function
button(s?)??
also what do they do?
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Re: European Bitx Net - Tonight (1 May) 1900UTC 7175 kHz
Allard,
Has a nice qso with Mike G4KXQ, all of that using V1.09 :) Thanks 73's Luke ON2AAV
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any writeups on how to flash new firmware and add the function button(s?)? also what do they do?
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Re: European Bitx Net - Tonight (1 May) 1900UTC 7175 kHz
Heard Adi YO2LIW about 53, and also heard G4KXQ (about 55) calling Luke AN2AAV. Didn't hear Luke himself.
But I had strong QRM from an Italian station at only 1kHz up, and image carrier from a broadcast station at exactly 7175. I called many times but nobody seems to have heard me. 73, Allard PE1NWL
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Re: European Bitx Net - Tonight (1 May) 1900UTC 7175 kHz
Adi,
Great thanks for the RX report of my sig. Let's hope for less QRM and QSB next time ;) 73's ON2AAV Luke
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Re: European Bitx Net - Tonight (1 May) 1900UTC 7175 kHz
I also copied you for short time, Luc (tried to call you). Carl, M0ICR was about 55 to me but with deep QSB (tnx QSO Carl). A surprise was UA9CAW with good signal (54 received). Boris was using a beverage, hi.
As Allard mentioned, there is a strong broadcast image around this frequency.?
73! Adi YO2LIW
On Monday, May 1, 2017 10:08 PM, ON2AAV <on2aav@...> wrote:
Just copied Adi YO2LIW? here in north part of belgium 5/6
73 ON2AAV
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Jeff
Willy
bill
Allard PE1NWL
ON2AAV