Re: Farhan's Analog Again The Daylight Radio
The Source voltages are 4.9 and 2.2 volts. 13.2 volts applied to the audio/mixer/BFO chain. Waveform from the drain of Q3 is a 20 mV signal of garbage. The DSO shows the frequency to vary between 7 and 8 KHZ. I do not hear a tone, just white noise. I will post a picture of my mess later. Thanks. Barry ? Sent from for Windows ?
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From: Ashhar FarhanSent: Monday, August 29, 2022 8:47 PM To: [email protected]Subject: Re: [BITX20] Farhan's Analog Again The Daylight Radio ? I am surprised at this.? Let's try debugging this. 1. Do you have an oscilloscope ? Can you see the waveform? If so does it stay dead constant? 2. Have you built the low pass section? I have frequently made mistakes wiring it up correctly. Without the low pass filter, it is bound to have very large noise bandwidth. 3. Can you measure the voltages around both the FET sources of the product detector? ? On Tue, Aug 30, 2022, 12:29 AM barry halterman <kthreebo@...> wrote: Really disappointed in the receiver of this project. After many attempts to cure microphonics issues with the BFO, etc, the RX has more noise from the mixer/bfo then band conditions during a local thunderstorm. There is no difference between the noise floor with or without the antenna. Removing the output from the second mixer, the audio is dead quiet. Once the mixer/BFO is connected the noise is bad. Reminds me of an old tube receiver. It does receive signals that are very strong and they sound mediocre. At night, WWV is always in the background. Tick, tick tick, beeeep. I think once the noise issue is resolved, this will be a neat receiver but untill then I won't build the TX. Anyone else who has constructed the radio have any problems? ? On Sun, Aug 28, 2022, 1:05 AM Ashhar Farhan <farhanbox@...> wrote: Alan, My blog is at . The daylighr radio is on? ? On Sun, Aug 28, 2022, 4:15 AM Alan Cooper <cqw7aln@...> wrote: Where might the blog page be if it is not right here, I would like to be on that page if possible? Sorry for being slow in understanding whats going on here. ? On Fri, Aug 19, 2022 at 6:54 PM Ashhar Farhan <farhanbox@...> wrote: I am updating the stl files. I will link them up on the blog page of the Daylight radio. ? Where can the .STL files for the 3d printed plastic toroids be found?
The PTO VFO one I have found easily. But the toroids are proving more elusive.? Or is that left as an exercise to the homebrewer??
I have the audio chain built and starting on the product detector and BFO, so I'll soon get closer to the VHF, TX filters and the RX band pass filter and the toroids become more relevant.?
-Ismo OH2FTG
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Re: Farhan's Analog Again The Daylight Radio
I suspect you have a faulty part in RX chain.
You will have to keep disconnecting further down the chain and
find the noisy area.
Replace one by components till the noise drops.
Raj
On 30/08/2022 12:29 AM, barry halterman
wrote:
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Really disappointed in the receiver of this
project. After many attempts to cure microphonics issues with
the BFO, etc, the RX has more noise from the mixer/bfo then band
conditions during a local thunderstorm. There is no difference
between the noise floor with or without the antenna.
Removing the output from the second mixer, the
audio is dead quiet. Once the mixer/BFO is connected the noise
is bad. Reminds me of an old tube receiver. It does receive
signals that are very strong and they sound mediocre.
At night, WWV is always in the background. Tick,
tick tick, beeeep.
I think once the noise issue is resolved, this
will be a neat receiver but untill then I won't build the TX.
Anyone else who has constructed the radio have
any problems?
Barry
On Sun, Aug 28, 2022, 1:05 AM
Ashhar Farhan < farhanbox@...>
wrote:
Alan,
My blog is at .
The daylighr radio is on?
On Sun, Aug 28, 2022, 4:15
AM Alan Cooper < cqw7aln@...>
wrote:
Ashhar,
Where might the
blog page be if it is not right here, I would like to
be on that page if possible? Sorry for being slow in
understanding whats going on here.
Thanks for the
help
Alan w7aln
On Fri, Aug 19, 2022
at 6:54 PM Ashhar Farhan < farhanbox@...>
wrote:
I am updating the stl files. I will
link them up on the blog page of the Daylight radio.
- f
Where can the
.STL files for the 3d printed plastic toroids be
found?
The PTO VFO one I have found easily. But the
toroids are proving more elusive.?
Or is that left as an exercise to the
homebrewer??
I have the audio chain built and starting on the
product detector and BFO, so I'll soon get
closer to the VHF, TX filters and the RX band
pass filter and the toroids become more
relevant.?
-Ismo OH2FTG
|
Re: Farhan's Analog Again The Daylight Radio
Can you also post a close-up picture of the BFO/Product detector? - f
On Tue, Aug 30, 2022 at 6:17 AM Ashhar Farhan via <farhanbox= [email protected]> wrote: I am surprised at this.? Let's try debugging this. 1. Do you have an oscilloscope ? Can you see the waveform? If so does it stay dead constant? 2. Have you built the low pass section? I have frequently made mistakes wiring it up correctly. Without the low pass filter, it is bound to have very large noise bandwidth. 3. Can you measure the voltages around both the FET sources of the product detector? - f
On Tue, Aug 30, 2022, 12:29 AM barry halterman < kthreebo@...> wrote: Really disappointed in the receiver of this project. After many attempts to cure microphonics issues with the BFO, etc, the RX has more noise from the mixer/bfo then band conditions during a local thunderstorm. There is no difference between the noise floor with or without the antenna. Removing the output from the second mixer, the audio is dead quiet. Once the mixer/BFO is connected the noise is bad. Reminds me of an old tube receiver. It does receive signals that are very strong and they sound mediocre. At night, WWV is always in the background. Tick, tick tick, beeeep. I think once the noise issue is resolved, this will be a neat receiver but untill then I won't build the TX. Anyone else who has constructed the radio have any problems? Barry
On Sun, Aug 28, 2022, 1:05 AM Ashhar Farhan < farhanbox@...> wrote: Alan, My blog is at . The daylighr radio is on?
On Sun, Aug 28, 2022, 4:15 AM Alan Cooper < cqw7aln@...> wrote: Ashhar,
Where might the blog page be if it is not right here, I would like to be on that page if possible? Sorry for being slow in understanding whats going on here.
Thanks for the help
Alan w7aln
On Fri, Aug 19, 2022 at 6:54 PM Ashhar Farhan < farhanbox@...> wrote: I am updating the stl files. I will link them up on the blog page of the Daylight radio. - f
Where can the .STL files for the 3d printed plastic toroids be found?
The PTO VFO one I have found easily. But the toroids are proving more elusive.?
Or is that left as an exercise to the homebrewer??
I have the audio chain built and starting on the product detector and BFO, so I'll soon get closer to the VHF, TX filters and the RX band pass filter and the toroids become more relevant.?
-Ismo OH2FTG
|
Re: Farhan's Analog Again The Daylight Radio
I am surprised at this.? Let's try debugging this. 1. Do you have an oscilloscope ? Can you see the waveform? If so does it stay dead constant? 2. Have you built the low pass section? I have frequently made mistakes wiring it up correctly. Without the low pass filter, it is bound to have very large noise bandwidth. 3. Can you measure the voltages around both the FET sources of the product detector? - f
On Tue, Aug 30, 2022, 12:29 AM barry halterman < kthreebo@...> wrote: Really disappointed in the receiver of this project. After many attempts to cure microphonics issues with the BFO, etc, the RX has more noise from the mixer/bfo then band conditions during a local thunderstorm. There is no difference between the noise floor with or without the antenna. Removing the output from the second mixer, the audio is dead quiet. Once the mixer/BFO is connected the noise is bad. Reminds me of an old tube receiver. It does receive signals that are very strong and they sound mediocre. At night, WWV is always in the background. Tick, tick tick, beeeep. I think once the noise issue is resolved, this will be a neat receiver but untill then I won't build the TX. Anyone else who has constructed the radio have any problems? Barry
On Sun, Aug 28, 2022, 1:05 AM Ashhar Farhan < farhanbox@...> wrote: Alan, My blog is at . The daylighr radio is on?
On Sun, Aug 28, 2022, 4:15 AM Alan Cooper < cqw7aln@...> wrote: Ashhar,
Where might the blog page be if it is not right here, I would like to be on that page if possible? Sorry for being slow in understanding whats going on here.
Thanks for the help
Alan w7aln
On Fri, Aug 19, 2022 at 6:54 PM Ashhar Farhan < farhanbox@...> wrote: I am updating the stl files. I will link them up on the blog page of the Daylight radio. - f
Where can the .STL files for the 3d printed plastic toroids be found?
The PTO VFO one I have found easily. But the toroids are proving more elusive.?
Or is that left as an exercise to the homebrewer??
I have the audio chain built and starting on the product detector and BFO, so I'll soon get closer to the VHF, TX filters and the RX band pass filter and the toroids become more relevant.?
-Ismo OH2FTG
|
Niels, It runs even on the RPI Zero 2. However, other applications like the fldigi et al might complain. - f
On Tue, Aug 30, 2022, 1:37 AM Niels Jalling < niels@...> wrote: Today I burned my last RPi4 (not the one in sBitx :-). It is dangerous to power the Pi via pin 2,4 and 6 especially on a cluttered workbench. I replaced the Rpi4 in sBitx with a Rpi3.
I can't feel any real difference between the Rpi4 and Rpi3.
de oz9ny, niels
|
John,
The baud rate depends on whether the Nano uses the "old" or "new" bootloader. If you have an older uBitx, it is probably the old bootloader and you want to try 57600 first.? If that fails (give it a minute or so), unplug, restart x loader and try 115200 for the baud. One will work!
73
Mark
|
Aaron, do you remember what potions you used in the XLoader program?
I do see the 340 driver on a new COM port that comes up when the USB is connected to my laptop.
How long did the Download take? What speed did you use?
John
|
I am not really familiar with Github although I know how to replicate a repository locally and then build the software locally. Would it work the same way with fork? Vy73 de Rolf, DL8BAG?
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Am 29.08.2022 um 22:15 schrieb Anthony Good <anthony.good@...>:
? I haven¡¯t had an opportunity to discuss with Ashhar, but I¡¯d be willing to maintain an ¡°unstable¡± bleeding-edge version (kind of like I¡¯m doing at the moment), especially if it would facilitate testing and merging pull requests into the ¡°stable¡± version. On Aug 29, 2022, at 15:56, Niels Jalling < niels@...> wrote:
Interesting.
I'll take a look tomorrow .
I have been wondering how and who can maintain a stable version of sBitx. When you visit the official github sBitx page you can see that something was updated a short time ago, but when you look at the dates nothing has happened.
73 de oz9ny, niels
|
I haven¡¯t had an opportunity to discuss with Ashhar, but I¡¯d be willing to maintain an ¡°unstable¡± bleeding-edge version (kind of like I¡¯m doing at the moment), especially if it would facilitate testing and merging pull requests into the ¡°stable¡± version.
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On Aug 29, 2022, at 15:56, Niels Jalling < niels@...> wrote:
Interesting.
I'll take a look tomorrow .
I have been wondering how and who can maintain a stable version of sBitx. When you visit the official github sBitx page you can see that something was updated a short time ago, but when you look at the dates nothing has happened.
73 de oz9ny, niels
|
Today I burned my last RPi4 (not the one in sBitx :-). It is dangerous to power the Pi via pin 2,4 and 6 especially on a cluttered workbench. I replaced the Rpi4 in sBitx with a Rpi3.
I can't feel any real difference between the Rpi4 and Rpi3.
de oz9ny, niels
|
Interesting.
I'll take a look tomorrow .
I have been wondering how and who can maintain a stable version of sBitx. When you visit the official github sBitx page you can see that something was updated a short time ago, but when you look at the dates nothing has happened.
73 de oz9ny, niels
|
Folks,
I have merged sBitx pull requests 8 through 12 here, for anyone who would like to test drive these updates, all in one fell swoop:
Updates include:
- AGC, I2C, and sound improvements from N3SB
- Various additions from me:?
- Fixed sidetone declaration from jmlynesjr: ?
Please note you may need to delete your settings file and have sbitx rewrite it for proper operation (rm /home/pi/sbitx/data/user_settings.ini )
73 Goody K3NG
|
Re: Farhan's Analog Again The Daylight Radio
Really disappointed in the receiver of this project. After many attempts to cure microphonics issues with the BFO, etc, the RX has more noise from the mixer/bfo then band conditions during a local thunderstorm. There is no difference between the noise floor with or without the antenna. Removing the output from the second mixer, the audio is dead quiet. Once the mixer/BFO is connected the noise is bad. Reminds me of an old tube receiver. It does receive signals that are very strong and they sound mediocre. At night, WWV is always in the background. Tick, tick tick, beeeep. I think once the noise issue is resolved, this will be a neat receiver but untill then I won't build the TX. Anyone else who has constructed the radio have any problems? Barry
On Sun, Aug 28, 2022, 1:05 AM Ashhar Farhan < farhanbox@...> wrote: Alan, My blog is at . The daylighr radio is on?
On Sun, Aug 28, 2022, 4:15 AM Alan Cooper < cqw7aln@...> wrote: Ashhar,
Where might the blog page be if it is not right here, I would like to be on that page if possible? Sorry for being slow in understanding whats going on here.
Thanks for the help
Alan w7aln
On Fri, Aug 19, 2022 at 6:54 PM Ashhar Farhan < farhanbox@...> wrote: I am updating the stl files. I will link them up on the blog page of the Daylight radio. - f
Where can the .STL files for the 3d printed plastic toroids be found?
The PTO VFO one I have found easily. But the toroids are proving more elusive.?
Or is that left as an exercise to the homebrewer??
I have the audio chain built and starting on the product detector and BFO, so I'll soon get closer to the VHF, TX filters and the RX band pass filter and the toroids become more relevant.?
-Ismo OH2FTG
|
Re: sBitx: larger monitor?
That's a UbitX with a 5" Nextion dislay....cool radio... ;)
On Mon, 29 Aug 2022 at 16:39, Gerald Sherman < ve4gks@...> wrote:
John - what's that radio on the bottom (the one the sBit is
sitting on)?
Gerry Sherman
Sent by the Thunderbird
On 2022-08-29 15:00, John Terrell, N6LN
wrote:
Here¡¯s my sBitx (atop my uBitx v6, with a 5 inch Nextion screen in
a InKits box). I drilled a new hole for an
HDMI cable which connects to the first (left most) micro HDMI
connector on the RPi board. It works very well but I need to have
the sBitx output fill the screen fully. I¡¯ve tried a number of
options uncommenting lines and entering various values in
/boot/config.txt (e.g. hdmi_group=2 hdmi_mode=82 or =45 or=57) but
nothing works. My monitor takes up to 1920x1080. Typical result is
¡°mode not supported.¡± Hints?
|
Re: sBitx: larger monitor?
John - what's that radio on the bottom (the one the sBit is
sitting on)?
Gerry Sherman
Sent by the Thunderbird
On 2022-08-29 15:00, John Terrell, N6LN
wrote:
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Here¡¯s my sBitx (atop my uBitx v6, with a 5 inch Nextion screen in
a InKits box). I drilled a new hole for an
HDMI cable which connects to the first (left most) micro HDMI
connector on the RPi board. It works very well but I need to have
the sBitx output fill the screen fully. I¡¯ve tried a number of
options uncommenting lines and entering various values in
/boot/config.txt (e.g. hdmi_group=2 hdmi_mode=82 or =45 or=57) but
nothing works. My monitor takes up to 1920x1080. Typical result is
¡°mode not supported.¡± Hints?
|
Re: Signal leak on both sideband. UbitxV6
@ Rolan,
I did not try your version of firmware as I already had a loaded arduino with N8ME firmware. I will try your firmware also once I get a new arduino.
73
Ashok Das
VU3KFK
|
Re: Signal leak on both sideband. UbitxV6
Thanks everyone for your inputs,
The problem appears to be resolved after calibration and switching to N8ME firmware (VU3GAO mods).
73
Ashok Das
VU3KFK
|
Here¡¯s my sBitx (atop my uBitx v6, with a 5 inch Nextion screen in a InKits box). I drilled a new  hole for an HDMI cable which connects to the first (left most) micro HDMI connector on the RPi board. It works very well but I need to have the sBitx output fill the screen fully. I¡¯ve tried a number of options uncommenting lines and entering various values in /boot/config.txt (e.g. hdmi_group=2 hdmi_mode=82 or =45 or=57) but nothing works. My monitor takes up to 1920x1080. Typical result is ¡°mode not supported.¡± Hints?
|
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On Aug 28, 2022, at 10:50 PM, RJ via groups.io <mubup@...> wrote:
?Hi John,
? Did you still have it or it gor sold?
Thanks,
Mubeen. On Sun, Aug 21, 2022 at 7:57 PM, John W9QP <dziedziejkoj@...> wrote: I purchased the full kit with the thought of installing modifications. After some soul searching I realized that I don¡¯t have the time, nor the expertise to program a new display. I built the kit last week and everything works fine. I purchased a Nextion 2.8 display and will include in the purchase price.?
Price $180.00 includes shipping lower 48 States. If interested please contact me off list.?
73
John W9QP?
|
Re: #sbitx - an ugprade kit is on the way
#sBitx
I received my package today and everything is up and running beautifully! Thanks Ashhar. I look forward to enjoying the development of this unique product.
Jack
N6LN
|
Raj vu2zap
Rolf Schroeder
John Terrell, N6LN