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Date

Re: no icon on sbitx on touch screen...help....

 

The desktop icon is created by copying a file with .desktop extension in the folder/home/pi/Desktop.
That file is already in the /home/pi/sbitx folder.?
1. Press ctrl-alt-T to open the terminal.
2. Type :
cp /home/pi/sbitx/sBitx.desktop /home/pi/Desktop
Press enter
3. Reboot


On Fri, Sep 2, 2022, 7:19 PM <in3izq@...> wrote:
hello,?? from? in3izq?? danilo...?? have a? little? problem with my? sbitx . during? first test, i? don't know? how is happen ,?? have lost? icon of sbitx and? fldigi? on? touch screen . when?? sbitx? on , i have?? only icon? of raspberry ,? and other? 2 on screen.? Need reload all software of? sbitx? on sd ? when i? start? sbitx? i have? only
icon? of raspy,?? not? screen with? schematic of radio and other.? sorry? for my? english. i hope? in? your message.? tnx in advance? and? best regard ? danilo in3izq?


Re: Ubitx version 3 heatsink

 

Please let us know how that works out. I've wanted to do the same thing to mine.

Max

On Saturday, September 3, 2022, 07:23:03 PM CDT, Tech Guy <tech48055@...> wrote:


Can both IRF 510s be mounted to one heatsink if mica insulators are used? I¡¯m thinking about doing a separate 24v supply to the finals.
John N4HNO?


Re: Ubitx version 3 heatsink

 

Wasn't there some sort of problem doing that? Capacitance between the heat sink and the IFR510 maybe? I vaguely remember some sort of issue doing that.

Max

On Saturday, September 3, 2022, 07:23:03 PM CDT, Tech Guy <tech48055@...> wrote:


Can both IRF 510s be mounted to one heatsink if mica insulators are used? I¡¯m thinking about doing a separate 24v supply to the finals.
John N4HNO?


Ubitx version 3 heatsink

 

Can both IRF 510s be mounted to one heatsink if mica insulators are used? I¡¯m thinking about doing a separate 24v supply to the finals.
John N4HNO?


Re: More Updates #sBitx #sbitx-k3ng

 

The red line on the spectrum display is controlled with the pitch control. That marks the cw/rtty/psk31 decoder's central frequency.


On Sun, Sep 4, 2022, 3:06 AM Steve Beckman <n3sb@...> wrote:
Pete - exiting the sbitx application and stopping fldigi, then restarting sbitx will often make the ?? question marks go away.

While sbitx is running, use Alt-Tab to switch over to fldigi to see if the CW signal is centered on fldigi's receive passband.?

73, Steve. N3SB?

-------- Original message --------
From: "PeteWK8S via " <pmeier=[email protected]>
Date: 9/3/22 5:24 PM (GMT-05:00)
Subject: Re: [BITX20] More Updates #sBitx #sbitx-k3ng

On second thought, I'm not sure I am correct as it seems hard to make it decode under either code with much reliability. So please disregard until you have nothing better to work on. ;-) My internal decoder has been good enough for lots of years and should continue for a while longer.

Pete WK8S


Re: Daylight Radio PTO -- 3D printed inductor forms

 

Dear Ashhar,
I was able to scale the part to 110% of the stl file you send me and the nuts fit perfectly.? CURA will allow you to scale the part before you slice it.?? So, it took a couple of tries and I ended up with scalling X,Y, and Z by 110% and then sliced it and my part was able to
fit the nuts really well.?? Yes some of the nuts seem to be a slightly different size but by adjusting the size, you should be able to come up with a good match.
Take care and have fun.?? I am getting close to wiring up my receiver.?
73 Dave WA5DJJ
SUPER QRSS/WSPR GRABBER https://www.qsl.net/wa5djj/


Re: Daylight Radio PTO -- 3D printed inductor forms

 

Dear Dean,
On the other? PTO stl files I had to increase the part by 10% on all dimensions.??? Now the nuts fit perfectly.?? In CURA you can arbitrarily increase or decrease a parts size by a percentage before you slice it.?? Then slice it and print it.? then judge from there if you need to increase it or decrease it? until the brass nuts fit.?? That may also change the size of the turns used but you can adjust that after you get the PTO oscillator built by taking turns of the 30 turn end of the coil.?? (on my other one it was about 4 or 5 turns.?
I didn't need to raise my mechanism up so I did not use the part your printing.
Take care and have fun.?? Good luck.
73 Dave WA5DJJ
SUPER QRSS/WSPR GRABBER


Re: More Updates #sBitx #sbitx-k3ng

 

¿ªÔÆÌåÓý

Pete - exiting the sbitx application and stopping fldigi, then restarting sbitx will often make the ?? question marks go away.

While sbitx is running, use Alt-Tab to switch over to fldigi to see if the CW signal is centered on fldigi's receive passband.?

73, Steve. N3SB?

-------- Original message --------
From: "PeteWK8S via groups.io" <pmeier@...>
Date: 9/3/22 5:24 PM (GMT-05:00)
Subject: Re: [BITX20] More Updates #sBitx #sbitx-k3ng

On second thought, I'm not sure I am correct as it seems hard to make it decode under either code with much reliability. So please disregard until you have nothing better to work on. ;-) My internal decoder has been good enough for lots of years and should continue for a while longer.

Pete WK8S


Re: More Updates #sBitx #sbitx-k3ng

PeteWK8S
 

On second thought, I'm not sure I am correct as it seems hard to make it decode under either code with much reliability. So please disregard until you have nothing better to work on. ;-) My internal decoder has been good enough for lots of years and should continue for a while longer.

Pete WK8S


Re: Daylight again mixer noise

 

¿ªÔÆÌåÓý

put it in clear epoxy and sell it as modern art?!?

dg9bfc sigi

Am 03.09.2022 um 16:15 schrieb barry halterman:

The joke for today folks!
Here is a picture of my pile of parts.? I am somewhat embarrassed to show my shoddy workmanship.The BFO is to the left, off the main board. In this picture the crystal filter output is not connected to the mixer (I was troubleshooting).

On Sat, Sep 3, 2022, 12:46 AM Ashhar Farhan <farhanbox@...> wrote:
It could be oscillations as well. Can you post a picture of your build?

On Sat, Sep 3, 2022, 9:41 AM barry halterman <kthreebo@...> wrote:

Josh, with the input to the mixer disconnected and the BFO quenched, there is no noise. Ashhar pointed out that what I am hearing is phase noise from the BFO. If I am experiencing phase noise, that phase noise is above all but the strongest received signal.

?

Barry

?

?

Sent from for Windows

?

From: Chris Mannon via groups.io
Sent: Friday, September 2, 2022 8:16 PM
To: [email protected]; Joshua Blanton
Subject: Re: [BITX20] Daylight again mixer noise

?

Hello I would like to start building this rig . But don't have a 3d printer . Is there anyone that is making the pto form and cores ? I would like to get a few sets thanks .

?

On Fri, Sep 2, 2022 at 4:02 PM, Joshua Blanton

<jtblanton@...> wrote:

Hi Barry,

?

The basic design of the mixer should be very quiet - many low-noise VHF receivers use similar constructs in their front-ends.? Are you certain that your noise isn't coming in from somewhere else (a noisy power supply rail, bad bypass caps/poor power bypassing, or a bad part)?? If you don't have *any* input into the mixer (no BFO and no IF) it should be quite silent - but you might need to terminate both inputs with caps to ground.? It seems possible that this circuit could oscillate, depending upon the layout - is that a possibility that you've considered?? I have read many warnings about J310 oscillations at VHF, which can be hard to find with slower oscilloscopes.? Long leads are not your friend with this particular piece of the circuit.

?

I haven't built this mixer yet, so I'm speaking theoretically - but it looks like a textbook cascode mixer circuit.

?

Good luck!

Josh, KB8NYP

?

On Fri, Sep 2, 2022 at 10:38 AM barry halterman <kthreebo@...> wrote:

I am curious as to how much mixer noise I should be hearing from the second mixer. Should the noise (hiss) be stronger than normal band noise? I might be looking into something that is not fixable and the nature of the beast.


--
Chris Mannon

?


Re: More Updates #sBitx #sbitx-k3ng

PeteWK8S
 

Good day Goody,

Just want to report that under the latest and current version of your code the CW decoder does not work. Just lots of random letters and ? marks no matter how carefully I tune. I wondered at see this so I rebooted to Farhan code and it started decoding. This does not impact me much as I have a slow but working decoder between my ears. It gets enough right to get by. :-)
Everything seems to work correctly as far as I could tell.

Pete WK8S


Re: Replacement encoder for uBitx V6

 

Thanks
Howard


Re: Replacement encoder for uBitx V6

 

Try this one??Mouser has plenty in stock, only $2.68 each.

Max KG4PID

On Saturday, September 3, 2022, 03:30:40 PM CDT, K4LXY <k4lxy.cw@...> wrote:


I just got a second uBitx V6 and unlike my earlier one, the encoder has steps. Any suggestions about a smooth encoder replacement? ?I don't need the push switch as I'm using N8ME firmware.
Tnx
73 Howard K4LXY


Re: Replacement encoder for uBitx V6

 

Want to trade? I'm serious. Mine is smooth but I think I'd like one that has the detents. My hands shake a lot and I have a hard time sometimes getting the frequency I want.

There was a Bourns (spelling) part number given some time ago that should work. Maybe a search on this forum will turn up something.

Sorry I couldn't of more help.

Max KG4PID

PS You can contact me if you're interested. callsign at yahoo dot com

On Saturday, September 3, 2022, 03:30:40 PM CDT, K4LXY <k4lxy.cw@...> wrote:


I just got a second uBitx V6 and unlike my earlier one, the encoder has steps. Any suggestions about a smooth encoder replacement? ?I don't need the push switch as I'm using N8ME firmware.
Tnx
73 Howard K4LXY


Re: New owner

 

Glad to hear, David.?

I just picked up a second one an am trying some other mods - minimally a Sotabeams DSP to see how it compares to the Hi-Per-Mite filter. ?The DSP has an LED for when you are in the passband, so it may eliminate the need for a zero beat indicator, and an audio limiter may be less important. ?While I wait for the DSP, I cut the trace from the volume control to the audio amp and installed headers so that I can easily plug the DSP in (in the meantime, I installed a jumper). ?Unlike the Hit-Per-Mite, it requires audio amplication on the output.

The N8ME firmware is a huge improvement over the stock, at least on CW. ?I was going to install a Nextion display but I'm not sure I want to - the N8ME is great, and I don't see that the Nextion setup adds much other than a fancier (and maybe harder to use) display.

Feel free to email me privately if I can be of more help.

73 Howard K4LXY

73 Howard K4LXY


Re: Daylight again mixer noise

 

¿ªÔÆÌåÓý

Brian, yes. I have been thinking that I might have a bad J310.

?

Ashhar, here are some readings from my build. The VFO RF voltage into the first mixer is 2.4Vp-p. Disabling the first makes no difference in the amount of noise.

BFO output is 3.48vp-p.

?

Jack, the board is painted a reddish color to mask the blood. Guts are out of the picture completely. ?

?

?

Sent from for Windows

?

From: Brian
Sent: Saturday, September 3, 2022 11:42 AM
To: [email protected]
Subject: Re: [BITX20] Daylight again mixer noise

?

It could also be a faulty J310 (ESD damage??).
Years ago when when JFET's were the latest, I built a transceiver that was lots of noise and weak signals. Years later I pulled the transistors to use in a new project and found that the gates were all leaky. They sort of worked and the dc voltage measurements were normal.
73 Brian.

?


Replacement encoder for uBitx V6

 

I just got a second uBitx V6 and unlike my earlier one, the encoder has steps. Any suggestions about a smooth encoder replacement? ?I don't need the push switch as I'm using N8ME firmware.
Tnx
73 Howard K4LXY


Re: Daylight Radio PTO -- 3D printed inductor forms

 

¿ªÔÆÌåÓý

Dean, looking good.. If you seem? to have some extra play between the screw and nut, wrap the screw with a layer of Teflon pipe thread tape. It takes some of the wobbling out.

?

Sent from for Windows

?

From: Dean Souleles
Sent: Saturday, September 3, 2022 1:26 PM
To: [email protected]
Subject: Re: [BITX20] Daylight Radio PTO -- 3D printed inductor forms

?

Scaling up by 10% worked perfectly.? Nice snug fit - easily able to insert the nut with fingers.

Now to wind it up and test!

73,
Dean
KK4DAS

?


Re: no icon on sbitx on touch screen...help....

 

How to Easily Create Desktop Shortcuts on Raspberry Pi OS?


--
Gyula HA3HZ


Re: Daylight Radio PTO -- 3D printed inductor forms

 

Scaling up by 10% worked perfectly.? Nice snug fit - easily able to insert the nut with fingers.

Now to wind it up and test!

73,
Dean
KK4DAS