Date   
Re: uBitX as a Shortwave Receiver?

Olivier Grand
 

Hello !
You can even listen long waves or lower (SAQ on 17.2Khz fo example) with the little SA612 Based VLF converter (see attached), works great
Regards.
Olivier

Le sam. 7 déc. 2019 à 14:42, iz oos <and2oosiz2@...> a écrit :

In my opinion using it just as a receiver is a bit of waste. It's an excellent choice as a qrp transceiver, but a Tecsun portable receiver like a PL660 is just more convenient with synch detector, AM, excellent SSB, excellent AGC, and you have the AM Airband as well. And plenty of volume too.


Il 06/dic/2019 01:25, "Mike Dice via Groups.Io" <regenbuilder=yahoo.com@groups.io> ha scritto:
I have read over the info about the uBitX on HFSigs. I understand it receives LSB and USB, but there is no mention of it being capable of receiving AM. I am considering getting one to use primarily to listen to what's left on shortwave. Is that possible?

Thanks, Mike



Re: BITX40 For Sale

Jack, W8TEE
 

I'm sorry, but the unit is sold.

Jack, W8TEE

On Sunday, December 8, 2019, 6:49:38 PM EST, W4MWD <modilly96@...> wrote:


Still for sale?   I have a friend who is interested if he can reach you or find your paypal address.

--
Jack, W8TEE

Re: Bitx40 for sale

Jack, W8TEE
 

All:

The BIX40 is sold. Thanks for the interest!

Jack, W8TEE

On Sunday, December 8, 2019, 8:15:39 PM EST, Tony Frey <ky_ccw@...> wrote:


Hi Jack

Is your bits 40 still available?

Thanks, Tony

Acta non Verba

--
Jack, W8TEE

Re: BITX40 For Sale

W4MWD
 

Still for sale?   I have a friend who is interested if he can reach you or find your paypal address.

Re: #ubitx #ubitx

Mike Short
 

Oops. Not all in same folder. Works now. Now I have no audio. It never ends. 

On Sun, Dec 8, 2019 at 15:49 Jack, W8TEE via Groups.Io <jjpurdum=yahoo.com@groups.io> wrote:
Do you have all of the source code files in the same directory?

Jack, W8TEE

On Sunday, December 8, 2019, 4:44:33 PM EST, Mike Short <ai4ns.mike.spam@...> wrote:


Still no success. Also, ubitx_v5.1 won’t compile. Get si5351lbx_setfreq
was not declared in this scope at

si5351lbx_setfreq(0, usbCarrier)

Also had to comment out 
checkCAT(); for the same not declared in this scope. 



On Sun, Dec 8, 2019 at 11:38 Evan Hand <elhandjr@...> wrote:
It has been awhile, but to the best of my memory it was less than 2 minutes.

73
Evan
AC9TU


--
Jack, W8TEE

Re: #ubitx #ubitx

Jack, W8TEE
 

Do you have all of the source code files in the same directory?

Jack, W8TEE

On Sunday, December 8, 2019, 4:44:33 PM EST, Mike Short <ai4ns.mike.spam@...> wrote:


Still no success. Also, ubitx_v5.1 won’t compile. Get si5351lbx_setfreq
was not declared in this scope at

si5351lbx_setfreq(0, usbCarrier)

Also had to comment out 
checkCAT(); for the same not declared in this scope. 



On Sun, Dec 8, 2019 at 11:38 Evan Hand <elhandjr@...> wrote:
It has been awhile, but to the best of my memory it was less than 2 minutes.

73
Evan
AC9TU


--
Jack, W8TEE

Re: #ubitx #ubitx

Mike Short
 

Still no success. Also, ubitx_v5.1 won’t compile. Get si5351lbx_setfreq
was not declared in this scope at

si5351lbx_setfreq(0, usbCarrier)

Also had to comment out 
checkCAT(); for the same not declared in this scope. 



On Sun, Dec 8, 2019 at 11:38 Evan Hand <elhandjr@...> wrote:
It has been awhile, but to the best of my memory it was less than 2 minutes.

73
Evan
AC9TU

Re: BITX40 For Sale

Viktors Miske
 

Jack, have $$. But no PayPal acct. Workable?


On Sun, Dec 8, 2019, 3:59 PM Jack, W8TEE via Groups.Io <jjpurdum=yahoo.com@groups.io> wrote:
I have a BITX 40 (V3, #270) for sale, still in its original shipping box. I already have 2 units built and know I won't have time to do this one. The price is $50 and that includes shipping to CONUS. First PayPal payment gets it.


Jack, W8TEE

BITX40 For Sale

Jack, W8TEE
 

I have a BITX 40 (V3, #270) for sale, still in its original shipping box. I already have 2 units built and know I won't have time to do this one. The price is $50 and that includes shipping to CONUS. First PayPal payment gets it.


Jack, W8TEE

Re: How to get rid of Local FM broadcast stations #ubitx

Curt
 

Yes sometimes seeing can be the issue! 

Better to use an ohmmeter (DVM or other type) to see if there is continuity from 'ground connections on the board - any, they are all connected within the board) to the OUTER conductor of the coax connector.  if this is an open circuit, you aren't properly connected.  (you might be connected to the board but maybe not the case - see note about scraping paint if you case has paint). 

building RF stuff requires some investigation - use a meter always, don't trust your eyes.  don't ask about my own misadvertures!

73 Curt

Re: #ubitx #ubitx

Evan Hand
 

It has been awhile, but to the best of my memory it was less than 2 minutes.

73
Evan
AC9TU

Re: #ubitx #ubitx

Mike Short
 

How long should it take to upload?

On Mon, Dec 2, 2019 at 20:34 Evan Hand <elhandjr@...> wrote:
Or you can download XLoader from here:

https://github.com/xinabox/xLoader/releases/tag/v1.339

This is what I used to flash the Nano.

73
Evan
AC9TU

Re: How to get rid of Local FM broadcast stations #ubitx

Gary Anderson
 

Hi Gavin.
I don't see a RF ground. The (-)DC voltage is not a ground.  On most power supplies it is a common.  If connected to ground at the supply, it is connected to mains electrical system ground, not a good RF ground.
Since you are in a metal chassis, remove the paint to have a good connection between the chassis and all the connectors including the 4 PCB stand-offs. Then bond the chassis to your RF ground.
Also make sure you have a proper size fuse inline between your power source and your uBITX.

The green/yellow/orange bundle to your volume control: Move that forward and down close to the chassis to minimize coupling from the encoder and USB

Rgds,
Gary

Re: standalone signal analyzer firmware hex file

F5NPV
 

Hello,

in the file folder i put the v07 and v08 HEX files

https://groups.io/g/BITX20/files/Signal%20Analyzer%20HEX%20files.zip

73s

uBitx V4, nextion display and other mods #ubitx

dwhacks
 

Hello Group, long time lingerer, first time poster.
I've had the uBitx V4 for almost a year now, and have used it for listening a bit, but not much. Recently I met a local ham (VE7PS) that really got me interested in radio again. I have been studying for my license on and off for the last 4 or so years, and now after meeting VE7PS I am making the push. I will be taking the test early January 2020.

ANYWAY, the reason I'm writing, is I'm a tinkerer. and I've done most of the mods to my uBitx; nextion display, ND6T Stockton Bridge SWR with the extra arduino for S-Meter and SWR. Ive also got the small AGC board from kit-projects.com.

My question is; after installing the AGC and the S-Meter, where should I connect the S-meter? it says "Vol-high" but the AGC board has an S-meter pad. The AGC instructions state, that for a V4 board to connect the AGC V to R70 through a resistor instead of through VOL-HIGH. So it seems I have 3 places to choose for the S-Meter: Vol-HIGH, R70 through a resistor, and S on the AGC board.

Does anyone have any ideas?

-Dayne.

Re: Nextion Question

Evan Hand
 

Please be sure to use the correct hex file, there are a number of them.

Here is the FileNameInfo.txt listed.  Note that the hex file to use is dependent on the display that you will connect.  The the last part of the name indicates the display.  the file ending in _16P is the CEC software that will work with the original display.  The file for the Nextion displays end in _NX.  The _NX_S is for use with the I2C connected separate S meter.  Go to the Hamskey site to find out more.


http://www.hamskey.com/2018/04/various-lcd-support-in-ubitx-with.html
 
prefix   : UBITXV5_CEC_
Version  : Vxxxx (ex: V1.097)
LCD Type : _XXX  (ex: 16x02 Parallel = 16P, 20x04 Parallel = 20P, 20x04 I2C = 20I, Nextion LCD = NX)
Signal Meter Type (Option) : none : Analaog Meter using A7 PIN
                             _S   : I2C Signal Meter using I2C Port
 
UBITXV5_CEC_Vxxxxx_16P.hex    : It is the LCD equipped with uBITX. Default LCD, 16x02 Parallel LCD
UBITXV5_CEC_Vxxxxx_16P_S.hex  : _16P with I2C Meter
 
 
UBITXV5_CEC_Vxxxxx_16I.hex    : 16x02 I2C LCD
UBITXV5_CEC_Vxxxxx_16I_S.hex  : _16I with I2C Meter
 
 
UBITXV5_CEC_Vxxxxx_20P.hex    : 20x04 Parallel LCD
UBITXV5_CEC_Vxxxxx_20P_S.hex  : _20P with I2C Meter
 
 
UBITXV5_CEC_Vxxxxx_20I.hex    : 20x04 I2C LCD
UBITXV5_CEC_Vxxxxx_20I_S.hex  : _20I with I2C Meter
 
UBITXV5_CEC_Vxxxxx_16D.hex    : 16x02 I2C Dual LCD
UBITXV5_CEC_Vxxxxx_16D_S.hex  : _16D with I2C Meter
 
UBITXV5_CEC_Vxxxxx_NX.hex     : Nextion LCD
UBITXV5_CEC_Vxxxxx_NX_S.hex   : _NX with I2C Meter

Re: How to get rid of Local FM broadcast stations #ubitx

Mike Short
 

Did you remove the paint from all of the holes to insure good contact?  Antenna jack, power, board mounting holes, jacks, case screws,etc. Twist your audio wiring together more as well. 

On Sat, Dec 7, 2019 at 10:43 MVS Sarma <mvssarma@...> wrote:
Use a 2wire + shield cable between audio 8 pin plug and the volume control. The ground pin of VC can return  back on the shield wire to the connector. But not to be grounded there at VC.
Hope this method helps.

Sarma vu3zmv

On Sat, 7 Dec 2019, 9:24 pm Gavin, <gdesplin@...> wrote:

I have my radio in the chassis now, no more humming, but the radio stations are back. I can’t see any wires touching the chassis and the stations were there without the lid. And they are persistent no matter my tuning. Here are some pictures:

On Mon, Dec 2, 2019 at 08:03 PM, Adrian Chadd wrote:

hi,

post a photo of the wiring. you may need to shorten some wires and do
some RF bypassing?



-adrian

On Mon, 2 Dec 2019 at 19:33, <gdesplin@...> wrote:

I tried taking it of the metal chassis and now the broadcast stations were quiet compared to a loud hum. The hum got more intense if I put my fingers close it the volume control wires. Also if things got moved around a bit it the broadcast stations would get loud and then stop when things moved back around again.

On Mon, Dec 2, 2019 at 06:10 PM, Ashhar Farhan wrote:

If the stations are heard regardless of your tuning, it is probable that they are being picked up by the audio system. Can you double check that the volume control and the speaker wires don't touch the chassis anywhere?

- f

On Tue 3 Dec, 2019, 1:36 AM , <gdesplin@...> wrote:

Ok, so are you talking about getting this http://qrpme.com/?p=product&id=BCI like suggested at http://ubitx.net/fix-bci-filter/ or another one of their suggestions? Or maybe something like in this youtube video https://www.youtube.com/watch?v=fgQenFJOjr4 ? Or did you have something else in mind? I'm all for whichever is simplest/easiest as I am a beginner.

On Mon, Dec 2, 2019 at 10:20 AM, Adrian Chadd wrote:

well, yeah. If you have AM stations close by then they can definitely
overwhelm your frontend.

Get one of the bitx AM broadcast filters; they're high-pass filters
that drop-off around 3MHz. So yeah, you won't be receiving 160m, but
that's ok right?


-adrian

On Mon, 2 Dec 2019 at 09:17, <gdesplin@...> wrote:


Ah, it looks like both these stations also have AM counterparts, at 1490 kHz and 1210 kHz. Does that change things?

Re: Nextion Question

Dennis
 

Thanks Evan,
I have downloaded the most current files (that you listed) and have uploaded first the sketches and then the hex files to see if there was any difference. The radio loses volume after these uploads and does not drive the Nextion. I really don't know what to investigate next. The radio works fine with the original software and display. BTW the last time I uploaded a hex file I had the original display plugged in and it worked just fine even though the file I uploaded was for the Nextion display. That really doesn't make sense to me.

Regards,

73, Dennis W7DRW

Re: nextion noise 2.5mh choke

talmadge huckabee
 

I did look at the nextion   command set dim and dims, but will the in completely reduce the nextion noise   


-----Original Message-----
From: Stephan <stephan.klein1302@...>
To: BITX20 <BITX20@groups.io>
Sent: Sat, Dec 7, 2019 3:58 pm
Subject: Re: [BITX20] nextion noise 2.5mh choke

There are two system variables to control the dim function:
1. dim = 0  -> 0 = off. After reset you must set this again.
2. dims = 0 This will also work after reset.

Re: nextion noise 2.5mh choke

Stephan (DG4ABD)
 

There are two system variables to control the dim function:
1. dim = 0  -> 0 = off. After reset you must set this again.
2. dims = 0 This will also work after reset.