Re: BitX40 v1.27.7 SPOT mode
Ah, that explains!
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In your case you'd need to round to the nearest 10 Hz. at line 481: ultoa((frequency + 50), b, DEC); // construct the frequency string change to: ultoa((frequency + 5), b, DEC); // construct the frequency string 73 Allard PE1NWL
On Sat, February 3, 2018 20:34, Vic WA4THR via Groups.Io wrote:
Thanks, Allard. I'm thinking perhaps to eliminate the +50 in my version
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Re: #ubitx-help Strong Audio Tones in and outside audio receive passband
#ubitx-help
John Backo
USB requirements are rather stringent. Unless
the 12 MHz crystal has changed radically in frequency, it should be pretty much left alone. (If it has changed or if it interferes, the best solution is to replace the whole thing). Easy enough to determine: try using the USB interface. If it communicates, all is ok. Usually in the arduino, as in most uC's, most RFI problems are traced to the external (16 MHz) crystal, or leakage into the power supply. If one is not ready to replace the unit, the best solution is a new crystal; it can be any of a number of frequencies. What changes is the timing span. Alternately, one can try to shield everything -- especially the leads going to other parts of the rig. Sometimes, the lcd is noisy and not much can be done about it except to change the programming to change the update method. But usually, that is a KHz and not a MHz problem. In this case I would not discount it, however, since the problem is audio sidebands. john AD5YE
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Re: BitX40 v1.27.7 SPOT mode
Thanks, Allard. I'm thinking perhaps to eliminate the +50 in my version since I am displaying an extra digit in normal mode. Do you know where (what line) that rounding takes place?
73, =Vic= WA4THR
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Re: uBITX AM BCI Filter
#ubitx
Mike Woods
Thanks Nick
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I will put up the further details on the news item on uBITx.net I am sure that your mod will be widely adopted for those of us who are aflicted by nearby AM broadcast stations. Mike
On 3/02/18 11:40 PM, Nick VK4PLN wrote:
--
Mike Woods mhwoods@gmail.com
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UBITX COLOUR TOUCH DISPLAY CONTROLLER V.2.72U PHOTOS
#ubitx
Joe
From atmega 2560 - 3 cables for clocks and 6 pin harness to ubitx 2 cables for SI5351 Lower left are 2 voltage down converters - 1 adjusted to 9v for the atmega
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UBITX COLOUR TOUCH DISPLAY CONTROLLER V.2.72U Released
#ubitx
Joe
Good Afternoon All, VU2SPF - Dr. SP Bhatnagar(INDIA) and VE1BWV Joe Basque (CD) are pleased to announce The initial public release of the UBITX Colour Touch Display Controller v2.72u
This is essentially the same as the one for BITX, but modified to work with the UBITX
The new software provides a Colour Touch Display Controller with a no menu approach to control your ubitx .
More info: http://vu2spf.blogspot.ca - for latest code Videos on You tube - search for vu2spf or vu2spf ubitx Facebook Bitx 20 Features: 1. Low cost for parts - Suggested parts - 1 atmega2560 - approx $8.00US, 1 Addafruit dds Si5351 - $10.00 - 2.8 TFT touch colour display $12.00 US
2. All bands, band selectivity, USB LSB -Works well with digital modes
3. All Display buttons are touch control - and no menus
4. Any button can have a physical button and a TFT touch or any combination.
5. 100 memory channels
6. Tunable BFO's
7. 3 VFO'S - A B and MEM
8. USB / LSB
9. TX timeout control
10. Touch TX button and or physical TX control - for ptt mike or digital modes (vox input low)
Next : New Feature - Working on adding Cat Control.
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Re: Toroids winding information
#ubitx
Jerry Gaffke
Cesar,
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I think you have the transformer footprint figured out correctly. Sounds like you have resolved the PTT issue, and have moved on to the area of the board where the IRF510's blew as per your first post. Perhaps T11 did get damaged somehow when the IRF510's blew. But I'd think more likely it was either L8 or L9 that got damaged, and/or the associated traces. Jerry
On Sat, Feb 3, 2018 at 08:03 am, César EA3IAV wrote:
I am still debugging and after checking many things inmay have to think of resoldering or remaking the t10 and t11...
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Re: Second batch of uBITX shipping?
#ubitx
I ordered mine December 18th and receive this today.... "We will be shipping your order early next week. Tracking details will be updated soon."
On 3 Feb 2018 9:45 am, "KK6VLV via Groups.Io" <syema2=yahoo.com@groups.io> wrote: RE: https://groups.io/g/
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Re: #ubitx-help Strong Audio Tones in and outside audio receive passband
#ubitx-help
Jerry Gaffke
These are $2 Nano clones, and both of those crystals are almost microscopic.
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USB spec says the 12mhz crystal must be correct within 0.25%, or 30khz. The 16mhz crystal doesn't need to be any more accurate. But maybe they are accurate enough, and pulling either or both lower with parallel caps will cure this issue. Ideally far enough to miss both high and low side BFO placement. Some 0201 caps across the IC pins may be the easiest way to hack them in. ;-) But I think shielding/bypassing should be looked at first. If the 12mhz crystal were the problem, we could just shut it down entirely when not using the USB port. But post 40432 says tones vary when finger is on the 16mhz crystal, suggests it is harmonics of the 16mhz causing trouble. Note that the CH340G and 12mhz crystal are on the back of the Nano, away from the radio. Jerry
On Sat, Feb 3, 2018 at 07:39 am, Arv Evans wrote:
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Re: Nextion display
Vince Vielhaber
Thanks Fred! I had already ordered one but it won't be here for a bit. Coming from China. Anyway with the tool downloads I found it easier to just download the entire site - so I did. So if the info ever disappears, I have a copy.
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Vince.
On 02/03/2018 06:12 AM, Dr Fred Hambrecht wrote:
For those that may be considering the Nextion display, let me suggest
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Toroids winding information
#ubitx
I am still debugging and after checking many things inmay have to think of resoldering or remaking the t10 and t11...
I see 10 turns but then 3 wires which is its dispossition Pins (square is 1) 6 - 1 5- 2 4 - 3 a - a’ b - b’ c - c’ ? thanks
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Re: Second batch of uBITX shipping?
#ubitx
KK6VLV
RE: https://groups.io/g/BITX20/message/41078
Thought I would get tracking info by end of the day yesterday, but no. Still waiting for tracking info. Hoping tracking info will come in Monday. -- KK6VLV
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Re: #ubitx-help Strong Audio Tones in and outside audio receive passband
#ubitx-help
Jerry Gaffke
Wrong. This part that reads
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<< second LO always at 45-12mhz should say second LO is at 45-12=33mhz for LSB and 45+12=57mhz for USB Leaving the second LO parked at 57mhz will likely give fewer birdies. Jerry
On Fri, Feb 2, 2018 at 11:48 pm, Jerry Gaffke wrote: Currently the uBitx BFO is always below the crystal filter to avoid the tones, second LO always at 45-12mhz
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Re: #ubitx-help Strong Audio Tones in and outside audio receive passband
#ubitx-help
Arv Evans
Jerry Interesting observation that the 12 MHz USB clock oscillator is on nearly the same frequency as the uBITX IF and BFO. If the BFO is offset to the high side of the IF passband it could well be within audio range of the USB clock frequency. If this is the problem then it might be possible to pull the USB clock crystal down with a small parallel capacitor. That should not make a significant change in USB clock timing but could take it out of range of the receiver IF and BFO frequencies. Some experimenting is probably necessary to tell how far to pull the crystal. It would not be good to accidentally put it within the IF filter passband. Arv K7HKL _._
On Sat, Feb 3, 2018 at 1:47 AM, Jerry Gaffke via Groups.Io <jgaffke@...> wrote: I assume you mean changing the Arduino crystal, not cap.
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Re: BitX40 v1.27.7 SPOT mode
Vic,
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There's nothing wrong, it's just a matter of rounding. In SPOT/Fine tune mode, the display shows the actual frequency at 1 Hz precision. In normal mode the precision is 100 Hz, so we need to round the number to the nearest 100 Hz. So if the real frequency (as shown in fine tune mode) is for example 7.254.955 Hz, it will be rounded to 7.255.0 on the display in normal mode. Rounding is performed as follows: f(display) = int ( f(actual) + 50 ) 73 Allard PE1NWL
On Sat, February 3, 2018 12:33, Vic WA4THR via Groups.Io wrote:
I am using Allard's wonderful v1.27.7 sketch in my BitX40, and because of
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New file uploaded to BITX20@groups.io
BITX20@groups.io Notification <BITX20+notification@...>
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the BITX20@groups.io group. File: I designed this case for the uBITX all Band Transceiver.pdf Uploaded By: Carl Beck Description: You can access this file at the URL: Cheers,
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Re: Nextion display
馬玉麟
Thanks for your suggestion. 2018-02-03 19:12 GMT+08:00 Dr Fred Hambrecht <w4jle@...>:
For those that may be considering the Nextion display, let me suggest you start out by going to their website Https://nextion.itead.cc On the home page select download and select the Nextion editor.
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BitX40 v1.27.7 SPOT mode
I am using Allard's wonderful v1.27.7 sketch in my BitX40, and because of an trip planned this weekend was rushing to package it so it could be used. I have added the PTT sense line, a FCN switch, and a SPOT switch, and have significantly shortened leads in this final package. Everything seems to be working well and I was able to use the rig mobile. When I press SPOT I am able to fine tune in LSB mode very easily, but the frequency displayed in SPOT mode differs from what the normal display shows. For example, if I am on 7.255.00 and press SPOT, the display reads 7.254.955, so if I tune that to 7.255.00 and release SPOT I get 7.255.05 on the normal display. Am I doing something wrong? Is there some sort of offset in LSB SPOT that needs to be adjusted?
73, =Vic= WA4THR
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Re: uBITX AGC - Adafruit TPA2016, A Success!
#ubitx
John <passionfruit88@...>
Thanks Nick.
73, John
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Nextion display
Dr Fred Hambrecht
For those that may be considering the Nextion display, let me suggest you start out by going to their website Https://nextion.itead.cc On the home page select download and select the Nextion editor.
This will give you a chance to play without spending any money on buying the actual display but allows you simulate the display and see if it meets your needs. V/R Fred W4JLE
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