Date   
Re: Installing BCI and Kit-Projects AGC

 

Yes I did, with a exacto knife. i made sure there was no continuity between the the two traces after the cut. Strange thing is, I can short between the RF in and the RF out and there is absolutely no difference in volume. You would think if the AGC board was dragging the level down that would eliminate the board.

Joel

Re: Installing BCI and Kit-Projects AGC

KE2GKB
 

From the quality of the picture all looks right,
Lets check a few things! Did you cut the RX trace that is now underneath the AGC board?


On Tue, Dec 10, 2019 at 11:51 AM Joel Caulkins/N6ALT <caulktel@...> wrote:
Here is the pic as a attachment.

Joel
N6ALT


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

Re: Installing BCI and Kit-Projects AGC

 

Here is the pic as a attachment.

Joel
N6ALT

Re: Installing BCI and Kit-Projects AGC

 

Tim,

Thanks for the reply, here is a picture of the install.

Joel
N6ALT

Re: Installing BCI and Kit-Projects AGC

KE2GKB
 

HI Joel,
Can you send us some pictures of your installation? Low volume can be caused by a few things, Most notably a bad RX path or A bad RX gain pot setting.
Tim Keller


On Tue, Dec 10, 2019 at 10:10 AM Joel Caulkins/N6ALT <caulktel@...> wrote:
Hi Tim,

I'm sure Joel, the OP won't mind me hijacking his thread, he is my brother in law:-)  I installed the AGC board today and noticed that the volume is very low now, in fact I have to crank it all the way up to hear much at all. It is installed on a V3 board. I didn't use a switch for AGC speed, I just jumped it to Fast position. I also installed the V lead to the high side of the volume control. Other than that I can't think of anything else that could be causing this. Any ideas?

Joel
N6ALT


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

Re: uBitX as a Shortwave Receiver?

Ashhar Farhan
 

Great idea paddy!


On Tue 10 Dec, 2019, 7:19 PM padmanabhan cattamanchi via Groups.Io, <PEPINDIA=yahoo.com@groups.io> wrote:
A simple mod would be to bypass the input and output the   crystal filter with two miniature relays. It may not sound great but should be decent enough for SWLing

Paddy
vu2pep/ac2dt

On Monday, December 9, 2019, 02:34:39 PM GMT+5:30, Olivier Grand <olilou1961@...> wrote:


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: Installing BCI and Kit-Projects AGC

 

Hi Tim,

I'm sure Joel, the OP won't mind me hijacking his thread, he is my brother in law:-)  I installed the AGC board today and noticed that the volume is very low now, in fact I have to crank it all the way up to hear much at all. It is installed on a V3 board. I didn't use a switch for AGC speed, I just jumped it to Fast position. I also installed the V lead to the high side of the volume control. Other than that I can't think of anything else that could be causing this. Any ideas?

Joel
N6ALT

Re: uBitX as a Shortwave Receiver?

padmanabhan cattamanchi
 

A simple mod would be to bypass the input and output the   crystal filter with two miniature relays. It may not sound great but should be decent enough for SWLing

Paddy
vu2pep/ac2dt

On Monday, December 9, 2019, 02:34:39 PM GMT+5:30, Olivier Grand <olilou1961@...> wrote:


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



ubitx v4 distortion/ vibration in audio out

Biju Apkrcl
 

I have ubitx 163/ 2 tuned to correct  frequency, reception is good but audio is vibrating badly making distortion. I  connected an external amplifier from TP 20 . The same problem existing. That means distortion from  earlier stages. How to solve this issue? Please help.

Re: Anyone used the ELEKITSORPARTS digital interface board? Opionons? #ubitx #digital

Justin Phillips K5AXL
 

Almost there. Bag ties holding the funtronics board are temporary until I pick up more zip ties. I'll be running the in/out volume pots to a dual concentric pot in the rf/mic location on the case, so it's nice and clean and no extra holes. I ran the audio coax (which was incredibly PITA to work with for me also) to the key/mic/phones board that came with the case, rather than doing any soldering onto the ubitx itsself. I still need to work out some way to connect the usb shield, I want it to be detachable, as I'm trying not to have too much permanently installed or require de-soldering to remove.


 

Re: uBitx V4, nextion display and other mods #ubitx

Curt
 

Dayne

I confess I am not familiar with that hardware set, but I tend to trust the instructions with the AGC board.  Likely the other approach of connecting just the high side of the audio at the volume control is for someone without an AGC board.  a key matter is making sure you understand the maximum voltage of the pin you are plugging into on the other side of the AGC board.  now if you tune in a huge signal (try one of the FT8 frequencies) and measure the voltage from the AGC board, you will know its level - and likely it will be low enough to feed into an arduino pin - via that suggested resistor to bound the current. 

fantastic on your entry into ham radio.  great to have you in the ubitx community also. 

73 Curt wb8yyy

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

Gavin
 

I finally got it in the metal chassis and it doesn't hum any more :) Thanks! (although I'm still getting those loud broadcast stations, but I think the suggestions here will solve it)

STM32F769-FT8-Transceiver

Charles Hill
 

Well I finally gotten the STM32F769-FT8-Transceiver project to a state worth releasing.

I have placed the files required for making the project on Github at this location: https://github.com/chillmf/STM32F769-FT8-Transceiver

I hope you enjoy the project.

Regards,

Charley

Re: #ubitx #ubitx

Mike Short
 

I am trying to build this v5 for a blind ham in KS. I have too much going on right now. Is there anyone that could align/troubleshoot  this so that I can get it to the guy? I will pay for parts/shipping, etc. 

Mike AI4NS 

On Sun, Dec 8, 2019 at 17:42 Mike Short via Groups.Io <ai4ns.mike.spam=gmail.com@groups.io> wrote:
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: How to get rid of Local FM broadcast stations #ubitx

David Wilcox
 

And don’t forget the microscope we all have in our smart phones.  Take a photo and blow it up on your computer...... shows all my sins usually.  An ohm meter and a smart phone are the start of anyones build or repair kit.  In fact I bought a USB electronic microscope a few years ago at Dayton but have never had to use it... my smart phone does all I have needed so far.

Dave K8WPE   

David J. Wilcox K8WPE’s iPad

On Dec 8, 2019, at 1:16 PM, Curt via Groups.Io <wb8yyy@...> wrote:

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

Dave Dixon
 

Hi guys,
                Still looking for a bitx 40 to play with.contact me dave g0ayd @gmail.com with price.




































































































































































































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.