Looks like it is picking up some spurious from a switch mode
device.
Check by switching OFF lights and other mains operated devices
one by one.
Older CFLs may be suspect.
Raj
On 13/09/2022 9:23 AM, DEBAJYOTI DAS
wrote:
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Show quoted text
It is uBITX V6, l am using 12 volt 7.2 Amp Exide
Battery, SMPS not used
Debajyoti (vuelgt)
Which model
of Bitx is this ?
Sounds like some SMPS spurs drifting.
Raj, vu2zap
On 12/09/2022 1:58 PM, DEBAJYOTI DAS wrote:
> My bitx has fixed noise issue from 21.3180 to 21.3480 Mhz
,how to
> fixed that?noise. Attechment bellow
>
|
It is uBITX V6, l am using 12 volt 7.2 Amp Exide Battery, SMPS not used Debajyoti (vuelgt)
Which model of Bitx is this ?
Sounds like some SMPS spurs drifting.
Raj, vu2zap
On 12/09/2022 1:58 PM, DEBAJYOTI DAS wrote:
> My bitx has fixed noise issue from 21.3180 to 21.3480 Mhz ,how to
> fixed that?noise. Attechment bellow
>
|
Re: CW keyer without transmitting (turning off break in)
#sBitx
I have changed the lower limit for TX power to 0 watts in my sbitx-k3ng repository, 2022.09.06.0115 branch. ?Do this to try it out:
cd /home/pi git clone? cd sbitx-k3ng git checkout 2022.09.06.0115 ./build sbitx
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A quick solution might be to change in the code the TX Power control lower limit to 0. ?I¡¯ll try that this evening and post code if it works. On Sep 12, 2022, at 15:35, Mark Earnest via < mark@...> wrote:
Bit of a weird question, but I cannot find a way to do this in the docs. Is there a way to use the CW keyer without actually transmitting? Say, to adjust the tone and speed settings off the air. It would be a bonus if there were a way to do this and have the morse code translator processing the CW being entered (full disclosure: I'm in the middle of learning CW and curious if I can use the sBitx as a learning tool as well :)
I've seen other rigs support something like this by turning off break-in altogether. Also, not getting into how I know this or how long it took to figure out, but if you ever find your colors completely inverted on your Raspberry Pi 7" screen, check to see if a solder flake ended up loose in your case and is shorting between R14/R13 and R9/R10 on your LCD controller board :)
--
KB3LYB
sBitx #077
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Hi! APP software connection and download failed, can you provide the download link again? or email me xyjlxx@...
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Re: #sBitx Sbitx died mid transmission
#sBitx
I follow this group with interest because I might later join the move and buy a sBITX. But I'm quite surprised by the multiple instances of final PAs being cooked. I currently use a Hermes Lite 2 SDR XCVR with an Alexloop antenna. A magnetic loop must be finely tuned on a very narrow band and when tuning the SWR varies from more than 40:1 to below 2:1 when tuned. The PA uses AFT05MS003N mosfets, which are given to accept SWR>65:1 and I have never cooked them;?
73 - Pierre - FK8IH
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Go into Start (the Raspberry button in the upper left) - Preferences - Main Menu Editor, highlight the ¡°Hamradio¡± item in the left pane, and click the New Item button. ?Give it a Name (i.e. sBitx-k3ng¡±) and make the command /home/pi/sbitx-k3ng/sbitx, click OK, and click OK again to exit the Main Menu Editor. ?You now have a shortcut in your main menu. ?If you want it on the desktop, click Start again and navigate to the ¡°Hamradio¡± item. ?Right-click the item you create and select ¡°Add to desktop¡±.
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On Sep 12, 2022, at 20:33, W6LKB < lbon@...> wrote:
Other than running .sbitx from your directory in terminal, what's the easiest way to create an icon that can be clicked on to run your version?
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Re: Unwanted emails form this group - even though mail is turned off (???)
Thanks Ken - I did that. We'll see if that stops it. Cheers, Rob, KC4NYK
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Other than running .sbitx from your directory in terminal, what's the easiest way to create an icon that can be clicked on to run your version?
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Re: Working Daylight receiver
Ashhar, it truly is a beast but it sounds really good for a pine board radio. Took me some time to get the microphonics tamed and the mixer noise issue taken care of. I had to result in dead bug construction in the RF section and followed your lead with the crystal filter mounted right on the board. Thanks for sharing this design with us. 73 Barry ? Sent from for Windows ?
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From: Ashhar FarhanSent: Monday, September 12, 2022 8:20 PM To: [email protected]Subject: Re: [BITX20] Working Daylight receiver ? Barry,? Congratulations! It looks evil and I am sure it is a beast. The Daylight is all about your own ability to cook up from the first principles it is not instant noodles. ? On Tue, Sep 13, 2022, 1:49 AM barry halterman <kthreebo@...> wrote: After many hours of tinkering I finally have a working receiver that has surprisingly, passed my expectations.
The Rx needs the transmitter.
Barry?
K3bo
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Re: PTO without 3D printer
The build is so neat! Are you sure that the nut is brass? Brass nuts are shiny. This may explain why it could be lossy and kills the oscillations. A quick question is:As the screw threads into the coil, does the frequency go up or down? With brass it should go up.
OOOPS; I forgot..
blu capacitor are for teast, wayting polystirene capacitors, 6mm diameter brass bar, etc...
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Re: Unwanted emails form this group - even though mail is turned off (???)
On Sep 12, 2022, at 19:03, Rob - KC4NYK <rbt@...> wrote:
can anyone please tell me how to contact the administrator so I can get this turned off?
At the bottom of each email you should have the following links, one of which claims to put you in touch with the Group Owner: Ken, N2VIP
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Re: CW keyer without transmitting (turning off break in)
#sBitx
Mark, The output power settings are entirely guess work between the bias settings and individual transistor characteristics that are far beyond their rated purpose. The best solution would be to add a stockton kind of inline swr bridge and measure the fwd power through and ADC and control the output in software through a kind of ALC. I have investigated many ADCs for the raspberry pi. The good ones take up pins that are not available. The usable ones are expensive. I am building an outboard swr and power meter that can go into the usb port. Lessee.. - f
Unrelated, I¡¯m finding the power level is wildly inaccurate in CW, it seems to be putting out nearly full power at any level above 5w. 2tone however seems to track the watt setting correctly. Found this out the hard way trying to use an antenna tuner and blew my finals.?
--
KB3LYB
sBitx #077
|
Re: Working Daylight receiver
Barry,? Congratulations! It looks evil and I am sure it is a beast. The Daylight is all about your own ability to cook up from the first principles it is not instant noodles.
On Tue, Sep 13, 2022, 1:49 AM barry halterman < kthreebo@...> wrote: After many hours of tinkering I finally have a working receiver that has surprisingly, passed my expectations.
The Rx needs the transmitter.
Barry?
K3bo
|
Re: CW keyer without transmitting (turning off break in)
#sBitx
Unrelated, I¡¯m finding the power level is wildly inaccurate in CW, it seems to be putting out nearly full power at any level above 5w. 2tone however seems to track the watt setting correctly. Found this out the hard way trying to use an antenna tuner and blew my finals.?
--
KB3LYB
sBitx #077
|
Unwanted emails form this group - even though mail is turned off (???)
For some reason, I started receiving email from this group today even though I have all email turned off. I'm not sure where to turn for help as I know it is not the members that administer this sort of thing but can anyone please tell me how to contact the administrator so I can get this turned off? It has already run my email account out of memory and I would have to block ALL my Groups.io accounts in order to block it.
Thanks and 73, Rob KC4NYK
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Re: File /uBITX_6_N8ME_2_VU3GAO_Mods.zip uploaded
#file-notice
Same here. ?I've uploaded it to two different uBitx V6s (original display). Both show corrupted graphics in CFG and when I try to change keyer type, the display goes white. -Howard 
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Thanks Bill, much better now. :-) this radio is quite amazing.. plus I can tinker. That's what radio is all about for me, probably never hear me on the air. :-)
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Working Daylight receiver
After many hours of tinkering I finally have a working receiver that has surprisingly, passed my expectations.
The Rx needs the transmitter.
Barry?
K3bo
|
Re: CW keyer without transmitting (turning off break in)
#sBitx
A quick solution might be to change in the code the TX Power control lower limit to 0. ?I¡¯ll try that this evening and post code if it works.
toggle quoted message
Show quoted text
On Sep 12, 2022, at 15:35, Mark Earnest via < mark@...> wrote:
Bit of a weird question, but I cannot find a way to do this in the docs. Is there a way to use the CW keyer without actually transmitting? Say, to adjust the tone and speed settings off the air. It would be a bonus if there were a way to do this and have the morse code translator processing the CW being entered (full disclosure: I'm in the middle of learning CW and curious if I can use the sBitx as a learning tool as well :)
I've seen other rigs support something like this by turning off break-in altogether. Also, not getting into how I know this or how long it took to figure out, but if you ever find your colors completely inverted on your Raspberry Pi 7" screen, check to see if a solder flake ended up loose in your case and is shorting between R14/R13 and R9/R10 on your LCD controller board :)
--
KB3LYB
sBitx #077
|
CW keyer without transmitting (turning off break in)
#sBitx
Bit of a weird question, but I cannot find a way to do this in the docs. Is there a way to use the CW keyer without actually transmitting? Say, to adjust the tone and speed settings off the air. It would be a bonus if there were a way to do this and have the morse code translator processing the CW being entered (full disclosure: I'm in the middle of learning CW and curious if I can use the sBitx as a learning tool as well :)
I've seen other rigs support something like this by turning off break-in altogether.
Also, not getting into how I know this or how long it took to figure out, but if you ever find your colors completely inverted on your Raspberry Pi 7" screen, check to see if a solder flake ended up loose in your case and is shorting between R14/R13 and R9/R10 on your LCD controller board :)
--
KB3LYB
sBitx #077
|
Raj vu2zap
DEBAJYOTI DAS
W6LKB
