Can't get my uBitX to transmit CW on the Dial frequency
Hi All,
I've been puzzled by this for a while now...
Why my uBitX doesn't transmit CW on the frequency on the dial?
I'm using Ian's CEC Firmware V1.08.
On TX the dial frequency is offset by the amount set in the "CW Tone" menu setting, so I'm really transmitting on the Dial freq. + or - the CW sidetone setting, depending on the mode (CWL or CWU) I understand that is the audio frequency of the sidetone and the audio frequency of a CW signal perfectly at Zero beat, so we need to RECEIVE a few Hz up or down to be able to hear anything on CW but I don't get why it's not transmitting on the dial frequency?
Shouldn't all these settings affect just the sidetone and the CW receiving freq? Why is it offsetting the TX freq by that amount of the sidetone? is it a bug?
What am I missing here?
Thanks
Dan.
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Re: uBITX physical comm port - newbie question
 UBITX - USB cable installed in a Hammond box with connector in the rear panel. ?This is a 12¡± Cable -Amazon
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On Jun 2, 2018, at 12:02 PM, Tom Francis < ubitx@...> wrote:
Thanks for the quick reply - I really appreciate it.
I do some QRP building and experiment a little, but I've never
gotten into the micro
controller scene much at all other than reading up on it.? 50 some
years of playing
radio I'm still something of a Luddite.
I will do what you suggest - looks like fun.
Thanks again.
Best regards,
Tom, W1TEF
On 6/2/2018 1:55 PM, Ralph Mowery
wrote:
Before playing too much with it, you can get just
the Arduino processor and play with it.? They are only about $
2.50 from China off ebay if you don't mind waiting 3 or so
weeks.? This is what I bought a while back to do some playing.?
There are 5 of them for about $ 12, but you can find single lots
of them.
Notice the silver thing on the left.? That is the USB
connector you are looking for.? They can be powered by just
the usb connector plugged into the computer if you just want
to play with the programming of them.? Same with the ubitx.?
The display will light up and you can program it through
that connector, but the rest of the ubitx will not be
powered.??
de ku4pt.
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Here¡¯s 20 meter FT8 tonight in Plano TX.? Don¡¯t think the band is dead. Mike K5ESS ? 
?
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From: [email protected] [mailto:[email protected]] On Behalf Of Lee
Sent: Saturday, June 2, 2018 8:44 PM
To: [email protected]
Subject: Re: [BITX20] Transmitter Mods ? I guessed that installing the mod would not affect only 1 band but I thought maybe I bumped something else.? As you suggested I'll wait a few days to see if the band wakes up.
--
Lee - N9LO? "I Void Warranties" ?
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I see a lot of post about the Nextion display. What advantages does the if have over the mcufriend displays?
Jack, W8TEE
On Saturday, June 2, 2018, 4:30:23 PM EDT, Allen Merrell via Groups.Io <kn4ud@...> wrote:
I have a 3.2 ordered and waiting for it to arrive. I am using the 1.08CEC firmware from Dr. Ian and like it a lot. I am adding 8 switches to it. I know the manager has options for 6 but I am adding one for FKEY and momentary toggle for PTT. I would appreciate any information I can get on the Nextion Display. I downloaded the software on the Nextion site but have not loaded it yet to check it out. Thanks Dr Ian for all your great work.
73's kn4ud
kn4ud@...
--
Allen ?Merrell
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 I only wired this 10 wrong ways until I figured it out. ?Sunil said he was working on a book of instructions to go with his cases. Al
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On Jun 2, 2018, at 9:40 PM, hotrod541@... wrote: First let me thank all who responded to last post, your ideas were a great help putting my uBITX together. I now am at the point where I have no idea how to proceed. I am using a case from Sunils and it really is looking great. ?Shipped were a number of boards that help with the assembled case. ?There is a board for ?USB, D-9, and two other plugs at the rear of the case. ?There is no paperwork to explain this board. ?I have checked the Internet with no luck. ?I would like to hook up but have no idea where to get the connections from. ?Any help would be of great help. Thanks
Buddy3223
KJ4ZSI
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Re: Instruction Manual needs revision
#ubitx
Jon, Your manual is well written and easy to follow. If setting the calibration and the bfo interact, you may need to add a note in the manual that repeating the setup again may be needed because of the interaction. Because of the various software out there I'm not sure which loads might require this and which might not. I would also put in a note that after power is applied to the ubitx you should probably wait a few minutes (ten maybe?) for everything to temperature stabilize. The crystal for the SI5351 will change frequency slightly as the ambient temperature changes in the case. tim ab0wr On Sat, 02 Jun 2018 13:41:24 -0700 tituskz1g@... wrote: I have attached my first pass at the "MBITX TUNEUP" instruction, and
welcome your comments.? I have aimed for ease of understanding,
particularly for newcomers to our interesting hobby. -- Jon Titus,
KZ1G Herriman, UT USA
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I worked out the wiring for the usb. ?Had a mini usb that I cut about 12 inches and wired to the usb back socket. ?I did that so I could use FT8 and other digital modes. ?I have a picture Buddy that I will try to find. ?The wire color is a standard I understand. ?I will try to post it here tomorrow. Al
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On Jun 2, 2018, at 9:40 PM, hotrod541@... wrote: First let me thank all who responded to last post, your ideas were a great help putting my uBITX together. I now am at the point where I have no idea how to proceed. I am using a case from Sunils and it really is looking great. ?Shipped were a number of boards that help with the assembled case. ?There is a board for ?USB, D-9, and two other plugs at the rear of the case. ?There is no paperwork to explain this board. ?I have checked the Internet with no luck. ?I would like to hook up but have no idea where to get the connections from. ?Any help would be of great help. Thanks
Buddy3223
KJ4ZSI
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I guessed that installing the mod would not affect only 1 band but I thought maybe I bumped something else.? As you suggested I'll wait a few days to see if the band wakes up. -- Lee - N9LO? "I Void Warranties"
?
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First let me thank all who responded to last post, your ideas were a great help putting my uBITX together. I now am at the point where I have no idea how to proceed. I am using a case from Sunils and it really is looking great. ?Shipped were a number of boards that help with the assembled case. ?There is a board for ?USB, D-9, and two other plugs at the rear of the case. ?There is no paperwork to explain this board. ?I have checked the Internet with no luck. ?I would like to hook up but have no idea where to get the connections from. ?Any help would be of great help. Thanks
Buddy3223
KJ4ZSI
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Have you thought about lowering the audio signal you have feeding the ubitx? I know I can vary the output power a lot with my two-tone generator by just cranking the amplitude pot on the generator up and down. tim ab0wr On Sat, 02 Jun 2018 08:34:42 -0700 "Dennis" <dennis@...> wrote: I have been operating FT8 with the uBITX and in some situations would
like to use it to drive my linear. Problem is that It puts out more
power than I want going into the linear. On 20m last night I fired up
the linear and was putting out 100 watts. Way more than I need for
this mode so I immediately went back to barefoot. The linear has only
High and Low settings (I was using low of course). Is there a simple
way to vary (lower) the output power? A new knob on the front panel
would be ideal. HI
?
73, Dennis
W7DRW
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Re: Power supply question
A couple of 5amp or 10amp Silicon diodes (5 watt rating) will give you a voltage drop of about 1.2v or 12.6v feeding the board. I had to crank up my power supply to 15.1v to get a consistent 12v out of a 7812 feeding the mainboard. tim ab0wr On Sat, 02 Jun 2018 08:25:45 -0700 "KE0GYC" <dragonfanatic90@...> wrote: I believe 13.8 is considered the upper limit for the uBITX main
board.? It should work fine as-is, but I wouldn't push it any hotter.
If you wanted to be extra careful, you may want to put a 12v voltage
regulator like a LM7812 inline with the main board's power.? The PA
power line (brown wire, IIRC) can run off the higher voltage just
fine and may get you a bit more power even.
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Re: RF power chain mods and improvements..
Yes its a significant issue.? ?When tuning the 28 to 29 mhz range the spur falls in the
upper aeromobile and HF marine band.??
Allison
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Re: boosting the power on 28 MHz
#ubitx
Essentially the same The 2n2222a has a few minor spec notes but they are the same so long as
its the TO18 metal part.? Do not expect miracles.? there are a lot of other changes that go with that.
Also do Farhan's Q90 mod.
Allison
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Hello everyone i want to ask about the s meter i do it like the diagram Which is includes lm368 when i i programming by ubuub manager i i g the max value same the minimum value i try alot and nothing changes accept the value and also it come same so do hach something that can help me or ideas or external s meter ??
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Hi all,
? The BitX is sold. ?Thanks.
73
Phil W1PJE
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Re: RF power chain mods and improvements..
Its better to take care of this before it gets to the RF amplification section of the uBITx¡ ? ?
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From: [email protected] [mailto:[email protected]] On Behalf Of Gordon Gibby
Sent: Saturday, June 2, 2018 4:35 AM
To: [email protected]
Subject: Re: [BITX20] RF power chain mods and improvements..? A lot of people use a T- type tuner to connect to their feedline; these might provide a bit of filtering of the lower undesired frequency. Not a solution but if the uppermost lpf is not going to be used could it be rengineered for 160m?
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Probably 20 was dying when you were
listening. See what happens over time. There is nothing in the mod
that can affect audio levels.
On 6/2/2018 6:34 PM, Lee wrote:
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I installed the
inductor and capacitors, thanks Howard.? My output changed across
the bands.? A funny thing happened.?? The receive audio on 20
meters dropped way off.?? 40 meters is nice and loud.? I heard
someone running a beam and lots of power on 20 and he was clear
but at full volume he was about 20% as loud as 40 meter static.?
Did 20 meters just go very quiet or did I create a problem?
--
Lee - N9LO? "I Void Warranties"
?
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I will take it... send me PayPal info..
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I installed the inductor and capacitors, thanks Howard.? My output changed across the bands.? A funny thing happened.?? The receive audio on 20 meters dropped way off.?? 40 meters is nice and loud.? I heard someone running a beam and lots of power on 20 and he was clear but at full volume he was about 20% as loud as 40 meter static.? Did 20 meters just go very quiet or did I create a problem? -- Lee - N9LO? "I Void Warranties"
?
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Lee
K9HZ