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SBitx V2. Hamvention - After 3 days
#sbitx_v2
After couple days here my opinion.
Last post for the evening about my progression with the sbitx. I started with the original image that came with the unit. I played around receiving with no issues. Ssb, ft8 and cw receiving great.
With a dummy load I did some TX testing. Trying to calibrate is not easy.. yes the procedure is.. but I'm not sure if I did it correctly.
Following the video online, on 40m Cw with a pitch of 500 in. I started to load to 20w looking/using an external meter.
With a load of 72 73 I got about 20w on the meter and 30w on the internal display. So I did the matercal command and adjusted to read about 20w on both meter.
From there I pushed the load to 100 on cw I'm getting little over 30w on the external meter.. even do the meter on the unit shows 40+ watts... anyway.. did I do something wrong?
Secondly.
To be safe I downloaded a fresh image from the group.io link. I loaded the new image and I'm struggling getting the same results. Meaning power outputs. Maybe I need check if any settings are different. Don't get me wrong, this all concept of the radio running from a pi is great. But I still think needs work.
What are your results?
So here my questions: 1. Why is the new fresh image that I downloaded giving me so much less powert output? Did anyone tried a fresh Image? 2. Has anyone messed arounf with the user setting.ini file? 3. Are you getting any close to 40w on 80 or 40? |
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Re: v4 Setup issue
Vic,
It was the v5 code that transmitted a 10MHz signal.? The v4 still had the AM zero beating to calibrate it.? Regardless, Nick is using the KD8CEC firmware, which does not have the transmission of a 10MHz signal for calibration. Nick, Does it go into transmit mode when you press the encoder without entering the "yellow box" settings window?? Can you try duplicating the issue when connected to a dummy load? The second question is because a simple wiring error would only key the transmitter while pressed.? An RF feedback issue could lock the transmitter on after the encoder is released.? To do the actual calibration, you will need an antenna to receive the AM signal unless you have a calibrated signal generator that can be received while connected to the dummy load.? You need the white noise of background static to tune the BFO. BFO tuning aid: Wiring instructions: I recommend installing the 4.7k pull-up resistor on the underside of the Raduino board, as was done for the v6.? I have had the resistor on the keyer jack come off when working on the rig causing flakey operation until I found it. 73 Evan AC9TU |
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Re: What is bitx23?
Nestor, The slides belong to QRPARCI, however, they haven a welcome policy to allow the presenters? to publish their paper online. I will expedite this and publish it in a few days. I am still travelling and am going to be home by 27th. Expect the paper by 1st June. - f On Wed, May 24, 2023, 3:43 AM nestor fernando casari <fernandocasari@...> wrote: Good day to all? |
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Re: v4 Setup issue
On the V4 uBitX that is the way calibration works...it puts out a signal at 10mHz, as I recall, so you need to have it working into a dummy load and adjust i while listening on a separate receiver or using a frequency counter. If you search the messages here I think there are some suggestions on how to do that process.
=Vic= |
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Re: uBitx v6 flashing
Hi Yvon,
The linked message from Gary Anderson pointed to a possible solution to your issue.? Here is the message content: Begin Message: ============================================================================================= Frank, Please post the errors. Most common problem is that you did not select the correct bootloader in the Arduino IDE to match the bootloader on your Nano. Tools-> Processor: -> ATmega328P (Old Bootloader) 100+ posts on this, that common. Rgds, Gary ==================================================================================================== End message 73 Evan AC9TU |
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Re: uBitx v6 flashing
You mentioned you tried several Pc's. Normally I would suggest re rooting and making really sure nothing is using that Com Port. Win versions tend to hang onto Com Ports. Triple check. Swap cables as this may be common in your tests. Did you get a 500 error msg ? What msg if any did you get. Try removing the Nano from the socket then try and refresh. On Wed, 24 May 2023, 3:06 pm Gary Anderson, <gary.ag5tx@...> wrote: /g/BITX20/message/92260 |
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uBitx v6 flashing
Hello,
I bought a used uBitx v6 that is off frequency by 3KHz on 20m and 1.5KHz on 40m and so on. I did download and compile the latest version but was unable to upload it to the Nano. I am using Win10 and 'Device Manager' sees the COM port so it is not a CH340 driver issue. Same issues on two different computers. I did remove and reinstalled the Arduino IDE with the same results. Otherwise the radio is working surprisingly well. Any suggestions would be welcome. 73, Yvon AE7YD |
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Re: no usb or lsb - both sides are alwas on
Hmmm.? ?I've never tried it with Linux, so I don't have any particular insight there.? ?
The only other things I can think to check are on the tools menu of the Arduino IDE, that the Board is set to "Arduino Nano" and the Processor is set to "ATmega328P (Old Bootloader)". |
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Re: no usb or lsb - both sides are alwas on
Bill Dammeyer
Rolan, The code seems to be good in both places I am using Linux, not Windows, if that will cause any problems. Bill On Tuesday, May 23, 2023, 03:00:59 PM AKDT, Rolan Rister <rtemp@...> wrote: bool isUsbVfof? ?should be? ?bool isUsbVfoA? ? in the code.? ?I wonder of there might be a random error in a file.In the file tab "ubitx_v6.1_code" in the Arduino IDE, there should be a line about a quarter of the way down from the top of the file that looks like this: bool isUsbVfoA = false, isUsbVfoB = true; Also, in the tab "ubitx.h" about halfway down there is a line that should look like this: extern bool isUsbVfoA, isUsbVfoB; If either of these has 'isUsbVfof' instead of 'isUsbVfoA', you should correct it and try to compile again. |
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Re: Output power display
Hi scttmtclf;
The sBitx DE does not have Power / SWR detection circuitry. It is not difficult to add this circuitry to the DE, and several people have already done this successfully. Look at the message thread titled "swr_bridge.ino"? - There are 60+ messages discussing the process, with the most recent messages from Scott KE8KYP and Juan WP3DN including photos of their -SUCCESSFUL- implementations. Perhaps the sBitx software should have some way of indicating that the Power / SWR detector circuitry is not available (when there's no response to I2C address 8) but the effort to add this detector to the DE is really not that great - especially if you have some Arduino experience. 73; Steve, N3SB |
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Re: Output power display
Have you installed an SWP/Power sensor?? That was not included in the sBitx DE V1 radio.? You would need to build/buy a Stockton bridge and an ATTiny85 and wire them in.? Ashhar Farhan did say there would be a manual calibration method published for us DE owners that do not want to add the sensor.? I have not seen the instructions as of today.
73 Evan AC9TU |
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Re: no usb or lsb - both sides are alwas on
bool isUsbVfof? ?should be? ?bool isUsbVfoA? ? in the code.? ?I wonder of there might be a random error in a file.In the file tab "ubitx_v6.1_code" in the Arduino IDE, there should be a line about a quarter of the way down from the top of the file that looks like this: bool isUsbVfoA = false, isUsbVfoB = true; Also, in the tab "ubitx.h" about halfway down there is a line that should look like this: extern bool isUsbVfoA, isUsbVfoB; If either of these has 'isUsbVfof' instead of 'isUsbVfoA', you should correct it and try to compile again. |
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Re: the time has come to pass the bitxmap.com torch
On Tue, May 9, 2023 at 11:51 AM, Doug W wrote:
After close to six years I have decided to step down from maintaining .? I know I say this every year but this time it is for real.? The domain is up for renewal early next month and I will not be renewing it.? If you do not want to see disappear now is your time to do something about it.Last chance for someone to step up.? After keeping this going for close to 6 years I have decided someone else can have a turn.? All the details are in /g/BITX20/message/102225 The map is not going to die.? If no one volunteers after the weekend I will figure something out with Ashhar so we don't lose it. ? -- |
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Output power display
So On my sbix DE v1, i upgraded to the latest software version with a fresh sd card.? I am trying to calibrate the power output, and I am running into two issues.? The first is that with the drive set at 97, it puts out exactly 20 watts.? The second issue is that the power output display shows 0 watts.? So I am attempting to follow Ashar's instructions with metercal, but when I turn the knob, the power output display doesn't change from 0.? I have attempted to search this forum, but I am not finding anything.? Can anyone provide me with some guidance?
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Bart Grubbs
Vic WA4THR
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