Date   

Re: uBitX as a Shortwave Receiver?

MVS Sarma
 

The am content being mono in most countries, with ham's skill to be able to tune ssb, am listening on any side band is not a big issue. We may not need specific am or synchronus detector.  As rightly pointed out bt Farhan, we may not get 10khz on medium and 5khz on shortwave. The audio I hear is reasonable for me. 

Sarma vu3zmv

On Fri, 6 Dec 2019, 7:30 am Ashhar Farhan, <farhanbox@...> wrote:
I use it to do that often. However, it is not very great for music as the crystal filter is quite narrow. You can easily add an AM detector at 45 mhz by using an NE612 as an active AM detector. The output can be fed into the volume control.

- f

On Fri 6 Dec, 2019, 5:55 AM Mike Dice via Groups.Io, <regenbuilder=yahoo.com@groups.io> wrote:
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




kd8cec software

David Alexander
 

having just walked in the door a couple of days ago, there seems to be quite a bit of mods that can be made to the ubix radios. my question is where does one start to add the lcd displays to this radio using the kd8cec software.
whats necessary hardware wise to use the nextion displays?  what is necessary for the software also?

thanks
dave k7da


Re: uBitX as a Shortwave Receiver?

Ashhar Farhan
 

I use it to do that often. However, it is not very great for music as the crystal filter is quite narrow. You can easily add an AM detector at 45 mhz by using an NE612 as an active AM detector. The output can be fed into the volume control.

- f

On Fri 6 Dec, 2019, 5:55 AM Mike Dice via Groups.Io, <regenbuilder=yahoo.com@groups.io> wrote:
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: A minor bug in the ubitx circuit

Ashhar Farhan
 

Russ,
The dashes dont seem long enough on the sidetone though they are transmitted properly. The dashes sound like blips. What is happening is that as a number of square waves pass through the filters caps, they charge up to an average of 2.5v (average of 0 and 5v). The 2.5v DC at the input of the LM386 DC saturates the chip and the audio input stops being amplified. The caps diacharge as soon as the sidetone ceases. The cycle repeats in the next dash. The dots are small enough to be finished before the DC rises enough to saturate the LM386.
- f

On Fri 6 Dec, 2019, 6:17 AM Russ KR0EHM, <russ@...> wrote:
How does this problem manifest itself? Just no CW tone at all or something else? My CW is working on relatively new v5 board so wanted to make sure. I’ve noticed it is a bit lower than I expect it to be (100-200 Hz) but that could be my BFO off, correct?


Re: A minor bug in the ubitx circuit

Russ KR0EHM
 

How does this problem manifest itself? Just no CW tone at all or something else? My CW is working on relatively new v5 board so wanted to make sure. I’ve noticed it is a bit lower than I expect it to be (100-200 Hz) but that could be my BFO off, correct?


uBitX as a Shortwave Receiver?

Mike Dice <regenbuilder@...>
 

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: Nextion Question

Mark Hatch
 

Dennis,

You need to looks at the buffers that go back and forth between the Nextion and the Raduino. Quite frankly, I never really figured them out because there is limited comment in the code. So not going to be a lot of help here.

There are some basic definitions in the code (this is a command, this should be the last buffer sent, etc.)   And then you are going to see how they are uninterpreted on the Nextion side. (you will need to download the Nextion editor) to see how the buffers are interpreted there.

Much different than the typical interaction between Nextion and a Auduino script.

Sorry, cannot be more help.

Mark


Re: Nextion Question

Dennis
 

Hi Mark,
I'm trying to use the CEC software.

Dennis


nextion noise 2.5mh choke

talmadge huckabee
 

just to let everybody know that a good source for the nextion  noise reducer  choke (2.5mh)
is to get a toroid (FT114_43) from kitsandparts.com and wind 70 turns of #22 wire on in, it  has about 1 ohm
of resistance so it will not have much voltage drop (will not dim nextion display) 


Re: A minor bug in the ubitx circuit

paul_hvidston
 

After further review, I would recommend a series combination of R253 and a 0.1 uF cap, otherwise you are changing the side tone level and shunting the received audio by 0.05 uF (series string of added cap and C252). This may also improve possible "thumping" in the mute circuit due to the DC bias from the side tone.

72 de N6MGN


Re: standalone signal analyzer firmware hex file

talmadge huckabee
 

ok thanks


-----Original Message-----
From: N8DAH <Dherron@...>
To: BITX20 <BITX20@groups.io>
Sent: Thu, Dec 5, 2019 12:20 pm
Subject: Re: [BITX20] standalone signal analyzer firmware hex file

Talmadge, my mistake.
Bob, try kit-projects.com for now I just changed hosts working out a few bugs
--
David


Re: Bitx40 AGC Has arrived (bit late I know)

RICHARD <k6kwq@...>
 

Looks like it worked that time an paypal has paid you. Thanks

 

Sent from Mail for Windows 10

 

From: KE2GKB via Groups.Io
Sent: Wednesday, December 4, 2019 8:33 PM
To: BITX20@groups.io
Subject: Re: [BITX20] Bitx40 AGC Has arrived (bit late I know)

 

Sent you an Email so we can figure out whats going on! 

 

On Wed, Dec 4, 2019 at 11:21 PM RICHARD <k6kwq@...> wrote:

Something is wrong with your site it will not let me order one with paypal.  Please save me one

 

Sent from Mail for Windows 10

 

From: N8DAH
Sent: Wednesday, December 4, 2019 8:06 PM
To: BITX20@groups.io
Subject: [BITX20] Bitx40 AGC Has arrived (bit late I know)

 

A bit later than we had wanted but we are now offering a AGC solder in mod for the Bitx40 Radios!

https://shop.kit-projects.com/index.php?route=product/product&path=59&product_id=123
73
--
David

 N8DAH
Kit-Projects.com

Shop is open!

 


--
Tim Keller - KE2GKB
https://shop.kit-projects.com

 


Re: Bitx40 AGC Has arrived (bit late I know)

 

Try login and look in your cart and clear it before you try again.

If that don't work let me know we can work something else out.

We did check the site and all is in working order.
--
David

 N8DAH
Kit-Projects.com

Shop is open!


Re: Bitx40 AGC Has arrived (bit late I know)

RICHARD <k6kwq@...>
 

Tried again now its trying to sell me 3 of them   Help

 

Sent from Mail for Windows 10

 

From: KE2GKB via Groups.Io
Sent: Wednesday, December 4, 2019 8:33 PM
To: BITX20@groups.io
Subject: Re: [BITX20] Bitx40 AGC Has arrived (bit late I know)

 

Sent you an Email so we can figure out whats going on! 

 

On Wed, Dec 4, 2019 at 11:21 PM RICHARD <k6kwq@...> wrote:

Something is wrong with your site it will not let me order one with paypal.  Please save me one

 

Sent from Mail for Windows 10

 

From: N8DAH
Sent: Wednesday, December 4, 2019 8:06 PM
To: BITX20@groups.io
Subject: [BITX20] Bitx40 AGC Has arrived (bit late I know)

 

A bit later than we had wanted but we are now offering a AGC solder in mod for the Bitx40 Radios!

https://shop.kit-projects.com/index.php?route=product/product&path=59&product_id=123
73
--
David

 N8DAH
Kit-Projects.com

Shop is open!

 


--
Tim Keller - KE2GKB
https://shop.kit-projects.com

 


Re: standalone signal analyzer firmware hex file

 

Talmadge, my mistake.

Bob, try kit-projects.com for now I just changed hosts working out a few bugs

--
David

 N8DAH
Kit-Projects.com

Shop is open!


Re: Constant loud hum or buzz on receive #ubitx-help #v5

Gavin
 

Thanks for all the suggestions so far! I will try them out and see what I come up with. Hopefully I'll figure it out and post back to say what I had to do.


Re: #uBitx #v4 and #sdr panadapter #ubitx #v4 #sdr

Cory King
 

Hey David,

Just got one of those G4HUP adapters.  Any chance you could post pics of how you installed it?


Re: WTB uBITX Harness and Controls

Cory King
 

Not at all trying to derail this question, but anybody know exactly what the connector types this thing uses are called?  I'd love to order some extras up from mouser or something...


Re: Constant loud hum or buzz on receive #ubitx-help #v5

Cory King
 


Put it in a metal case and your issues will probably go away 
I wonder if you could test the "common ground" theory out by just using a wire to ground one jack to another and see if it causes any change?  If it does, you might be onto something but do note that there are lots of folks running this thing inside plastic cases.

On my rig, I've noticed that that volume control wire is pretty sensitive and if it rests across the wrong thing, I get a hum/buzz.  I say this 'cause in one photo the OP has the power switch wire near the volume wires.

Gavin, have you tried just jiggling all the wires & jacks and seeing if that changes the nature of the sound?  Sometimes a little percussive maintenance is all that is required :-)


Re: standalone signal analyzer firmware hex file

Bob Benedict, KD8CGH
 

David
  http://www.kit-projects.com/ -> 404 not found
      Bob