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Re: Let's Promote bitxmap.com Re: [BITX20] bitxmap.com and mark your spot in the world
Bill
There are no unworthy questions, each of us should admit to learning something here. Team Would not it be logical to host bitxmap at HFsignals?? One could invite buyers to add themselves to the map. An invite could be pinned to the front of this group, with link to hfsignals.? Curt |
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Re: ??IF Stage doubts??
Jerry we provide a working DDS unit using si5351 which is tested with Freq counter .?
Now If any one has doubt on the DDS he is supposed to check the Freq output of vfo and bfo . Out here the builder preferred to port code from other sketch? We provide help In a framework as per our manual .we do not know if someone is experimenting and what he is doing and it becomes difficult to provide support. The problem comes when you have a conflict where you decide what is right and overlook what has been used for years as a standard design and components. When a person has achieved some breakthrough with his effort he should illustrate it with proof,but not try to alter and find faults in a tested design . We started our kits a decade back with bitx version 3. Then bitx version 3b. Later bitx version 3c using ade 1 and bitx3c using sbl mixers which were build by many hams worldwide all had the basic bitx design. The present easy bitx is the latest kit with much better performance and PCB layout . Better audio amp .audio mute.agc etc . If one goes to our cqbitx blog he could see pictures of so many bitx version 3 build by amateurs world wide . Thanks and regards. I am thankful to all members of this wonderful vgriuo who provide a constant support . De Sunil vu3sua |
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Re: Let's Promote bitxmap.com Re: [BITX20] bitxmap.com and mark your spot in the world
Mark - N7EKU
Hi,
I would make sure you board is well grounded.? The cases are often painted very well so the standoffs and screws never make electrical contact.? Clean off the paint in the inside where the standoffs rest. Make sure the display and raduino are full plugged into their sockets.? If the main board and display locations are a bit off, then the boards can start to become disconnected or slanted, which can ruin the connection reliability. 73 |
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Re: ??IF Stage doubts??
Sunil's firmware as programmed into the Nano he ships with each radio is fine.
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He has sold plenty of them, and they work. I still don't know what you have done, or what you are doing. On scant information, my best guess is that you compiled Sunil's source code using the wrong version of some Si5351 library, and that the version you used was tuning an Si5351 vco common to both the VFO and BFO. We had several issues with incompatible etherkit library versions back when the hfsignals Bitx40 plus Raduino first came out in late 2016. I suggest to Sunil that he include the appropriate Si5351 library source when he posts his Arduino sketch. Jerry, KE7ER On Wed, May 19, 2021 at 03:16 PM, <arorasimran@...> wrote:
However, please do note, this is not sunils code! |
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Re: Let's Promote bitxmap.com Re: [BITX20] bitxmap.com and mark your spot in the world
Bill KB3YV From what you posted, your uBITX is a V-5.? There are not a lot of differences between V-3, V-4, V-5, and V-6.? Most of the factory changes were focused on FCC compliance.? There are several 3rd-party operating software systems for uBITX transceivers. Info for your uBITX V5 is located at The home page for the uBITX line is located at Some user experience based help is at The jumpy tuning might indicative of RF getting into places where it should not be.? It could also be a damaged tuning encoder (too much heat during soldering?).? Some on this discussion group may have experienced similar problems and can provide better advice. If you have a DVM it might be worthwhile to observe power supply voltage to make sure there is enough current to run the rig. You might want to read over the instructions to see how to go directly into the configuration menu when you turn it on. Arv? K7HKL _._ On Wed, May 19, 2021 at 4:21 PM Bill Gunshannon <bill.gunshannon@...> wrote: On 5/19/21 5:05 PM, Mark - N7EKU wrote: |
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Re: Let's Promote bitxmap.com Re: [BITX20] bitxmap.com and mark your spot in the world
Bill Gunshannon
On 5/19/21 5:05 PM, Mark - N7EKU wrote:
Hi Bill,I didn't realize there were so many different models. I have no idea what model it is but when I turn it on it says uBITX v5.1 I joined the group to learn more about it before asking stupid questions. Main problem at the moment is turning the tuning seems to make the frequency jump by random, sometimes large, values. And, it is different depending on which way you turn it. As a result, the menus don't change smoothly and band change is truly weird. Almost looks like really bad keybounce. I am not sure if there is better firmware or not but I will need to learn how to load new firmware into the Raduino cause I already see things regarding the display that I am not going to be happy with. bill KB3YV |
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Re: ??IF Stage doubts??
so i changed ????? bfo_freq = constrain(BFOFREQ + knob + shift, 9997469UL, 12000000UL);
in? Allards code and in the settings menu, i could tune the BFO... Kickass sinusoidal repsponse. Now touching the base of Post mix amp Rx side give me a buzz as described by sunil in his manual However, please do note, this is not sunils code! I would still tune the number and program to trace where the BFO settings are done and place numbers perefectly -- |
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Re: Let's Promote bitxmap.com Re: [BITX20] bitxmap.com and mark your spot in the world
Any time to sign up is good. Go for it!!!
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Dave WD8AJQ Sent from my iPhone 5 On May 19, 2021, at 3:24 PM, Bill Gunshannon <bill.gunshannon@...> wrote:On 5/19/21 11:48 AM, David Barber wrote:I just finished assembling a BITX I bought maybe a year ago. |
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Re: Let's Promote bitxmap.com Re: [BITX20] bitxmap.com and mark your spot in the world
Bill Gunshannon
On 5/19/21 11:48 AM, David Barber wrote:
Let's Promote bitxmap.com <>I just finished assembling a BITX I bought maybe a year ago. It doesn't really work yet but I am trying. Should I put my location on the map? bill KB3YV |
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Re: Let's Promote bitxmap.com Re: [BITX20] bitxmap.com and mark your spot in the world
David I will look into it.? Of course it has to be cleared with Farhan before I make the change. Arv _._ On Wed, May 19, 2021 at 9:49 AM David Barber <wd8ajq@...> wrote:
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Re: ??IF Stage doubts??
Allard's code is a very good starting place if you wish to create your own version
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of firmware for the Easy Bitx. But I have absolutely no idea what you are doing. >? The one by? Allard Munters PE1NWL is taken from GIT >? No such errors with this FW...any way...? :) From this, it sounds like you may have it working. If so, congratulations! I guess we're done here! If you are still having trouble the the BFO moving: Are you using an Easy Bitx kit that you bought from Sunil, or are you building from scratch? Are you using the Si5351 BFO VFO board supplied by Sunil? When you compiled his Sunil's code, did you use exactly the same version of the Si5351 library that Sunil used? What frequencies are you seeing on the scope for BFO and VFO, and how do they change as you attempt to tune from 14.3 down to 14.0mhz? Jerry, KE7ER On Wed, May 19, 2021 at 09:41 AM, <arorasimran@...> wrote:
Jerry! I have the stock firmware sent by sunil which with wish the board was flashed ! VFO and BFO issues are arising in the stock firmware supplied by sunil |
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Linear LPF auto select
All,
The uBITXv6 is with the TSW Raduino is a very pleasant machine to listen on...but when I transmit, nobody hears me. Or if they do, they don't answer. Constant rejection! Almost like working in Sales! So last night I tried out my cheap Chinese linear - just on the bench. Well, actually on the floor. I made up a quickie cord to plug it into my big 12V supply, hooked it up to the RF out of the ubitx, piped the linear's output through the Bird wattmeter into my good Narda attenuator/dummy-load, clip-leaded it into "transmit". Started sending Dah's, and sure enough - saw 75W on the Bird. And the dummy load got pleasantly warm. So - what's the absolute bare minimum work to get this thing operational? I have a nice oak board left over from a flooring project - I'll just cut a piece off and mount the linear on it with cable ties. With enough room on the side for the LPF. Hookup wire to power the LPF. A female Dupont header to choose the band on the LPF - one prewired header for each band. I still need to get 12V on transmit from the uBITX. That would be signal "TX", which goes pretty much everywhere on the board. I can punt and just use pin 1 of K1, which is where it comes from. The nice cabinet for the linear is still printing. I expect the bottom clamshell to be done by early this afternoon. I'd like to ultimately have the linear auto-select its LPF. There are four choices: "15-10", "20-17", "40", and "80". At first, I thought I'd just have the uBITX tell the linear what band to use, but what if I want to use the linear with another radio? And another? And another? Imagining an auto-select circuit - take a sample of input RF with a relatively high-ohm resistor. Put that into a pair of diodes, clamping it to .6V. Actually, make that TWO pairs of diodes, clamping to 1.2V... Feed the clamped RF through an appropriate-sized capacitor into an appropriately-sized resistor. As the frequency rises, the reactance of that cap falls, giving us more voltage at the resistor. Then detect it with a diode - which should give a DC voltage proportionate to the frequency. Look at the voltage with a set of comparators or maybe just pipe into an analog input on the Nano. - Jerry KF6VB |
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Re: ??IF Stage doubts??
That is **NOT** stock firmware for an Easy Bitx.
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Jerry On Wed, May 19, 2021 at 09:13 AM, <arorasimran@...> wrote: ?Raduino_v2.04 for BITX40 - Allard Munters PE1NWL (pe1nwl@...) |
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Re: ??IF Stage doubts??
Eu acredito que voc¨º est¨¢ falando sobre quando voc¨º gira o Dial voc¨º tem varia??o na gama de ru¨ªdos de recep??o. Eu tamb¨¦m tenho isso aqui e fiz o teste com outro dispositivo fazendo a operadora 1Khz com atenuador de -120dB e percebi que quando eu chegar ao alcance que eu ajustei o BPF ele recebe o ru¨ªdo total da banda se ¨¦ disso que voc¨º est¨¢ falando. Veja que na BPF h¨¢ a bobina do meio, tem enrolamento diferente dos outros. Note isso bem, mas isso n?o me traz nenhuma diferen?a no meu DX apenas com 5w e dist?ncias de 800 a 1000 Km apenas com uma antena dipolo de 1/2 onda 40m Em qua., 19 de mai. de 2021 ¨¤s 12:54, Jerry Gaffke via <jgaffke=[email protected]> escreveu: Thanks for responding with this additional information. --
Carlos Fraga |
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Re: ??IF Stage doubts??
If you have recompiled the firmware, what Si5351 routines are you using?
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I suspect the code that the Easy Bitx build instructions point to is using the etherkit Arduino library, though this is not clearly stated.? Also, there have been a number of changes to the etherkit library over the years, so getting the correct version number is important. If you are using firmware that you have compiled from source, this library version issue is my best guess as to what your problem is. Jerry, KE7ER On Wed, May 19, 2021 at 08:54 AM, Jerry Gaffke wrote: I still suspect firmware. |
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Re: ??IF Stage doubts??
Thanks for responding with this additional information.
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But I still don't know exactly what you are doing. What is a Raduino V2? The Easy Bitx manual says it ships with a "Arduino Based Si5351 VFO BFO" Are you perhaps using a Raduino from HFSignals? But HFSignals sold the "Raduino" for v3,v4,v5 uBitx's, and now sells "TFT Raduino" for the v6. Perhaps the V2 refers to the firmware version, or something you see etched in the PCB? Are you using firmware on the Easy Bitx VFO-BFO board exactly as it was shipped, or have you loaded? "STOCK"? firmware into it? Does the receiver work at all? Did you check to see if it works before you did any mods? Exactly what frequencies are you seeing on the BFO and VFO? For example, assumes it powers up tuned to 14.2mhz, what frequency do you measure on BFO and VFO? If you move that to 14.0mhz, how do those frequencies change? I still suspect firmware. Other possible causes might be: ? A short between BFO and VFO wires out of the Si5351, but that should be fairly obvious on the scope. ? An error inside the Si5351, but that seems unlikely I doubt it is an error on the i2c bus into the Si5351, if that was the case it wouldn't work at all. We should probably let Sunil make his own code public. If you wish, you can send the code to me via private message in response to this message by clicking "Private" at the bottom of your response when using the groups.io webpage. Best Regards, Jerry, KE7ER On Wed, May 19, 2021 at 08:23 AM, <arorasimran@...> wrote:
Hi, it is with the STOCK firmware that BFO and VFO are not independent of each other. |
Sunil Lakhani
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