Date   

Re: Okay new quesetion #antennas #v6

shyamhegde
 

Nano VNA is a nice tool to learn and build antennas. Comes with inbuilt battery that lasts easily for few hours. Bit delicate in build and not rugged for field use, especially if you buy the one that has boards exposed from sides and not having frame. But for a hobbyist and occasional use perfect and value for money.
Check if you see a Nano VNA-F variant which is said to be better than those tiny ones.


New file uploaded to BITX20@groups.io

BITX20@groups.io Notification <BITX20+notification@...>
 

Hello,

This email message is a notification to let you know that the following files have been uploaded to the Files area of the BITX20@groups.io group.

Uploaded By: talmadge huckabee <thuckabee3@...>

Cheers,
The Groups.io Team


Re: digital s-meter/power meter forubitx

talmadge huckabee
 

link should be  form.arduino.cc/index.php?topic=403234.0
I uploaded drawing and pictures as follows

drawings= files/digital smeter
pictures = pictures/s-meter-pic 


Re: ubitx V6 SSB Transmit Audio Distortion (voice only)

k4jer@...
 

I up graded the mic that came with my V6 -- replaced tiny element, enlarged hole in front cover, removed speaker, filled with cotton balls.  Before I did this work I checked the wiring of the thing and found it to be good.  With the changes made the mic is very useable with my V6.

nil sine causa accidit

Jerry



On Friday, April 17, 2020, 04:25:18 PM UTC, Mark - N7EKU <n7eku@...> wrote:


Hi,

I was wondering if anyone (Rene?) has double-checked the wiring on these Baofeng microphones.  I think these are speaker/mics and the plugs are changed at the factory.  So I was wondering if perhaps some were wired incorrectly and the electret element is not connected correctly.  It is possible that the speaker is being hooked up instead of the microphone?  A check would be just to trace the wiring and make sure goes only to the electret element and PTT switch, and the speaker is fully disconnected.

73,


Mark


Re: ubitx V6 SSB Transmit Audio Distortion (voice only)

 

Hi,

I was wondering if anyone (Rene?) has double-checked the wiring on these Baofeng microphones.  I think these are speaker/mics and the plugs are changed at the factory.  So I was wondering if perhaps some were wired incorrectly and the electret element is not connected correctly.  It is possible that the speaker is being hooked up instead of the microphone?  A check would be just to trace the wiring and make sure goes only to the electret element and PTT switch, and the speaker is fully disconnected.

73,


Mark


Re: TX frequency is 1.2 kHz off #bfo #calibration #cw #v6

9a6cw@...
 

Thanks Jim for answer  

I tried everything   usb/lsb shift is too large . BFO doesnt impacts.
RIT or split mode is solution for CQ .
on the other side transcerver is very good on SSB . 

Ivica 9a6cw


Re: digitial s-meter

BruceN
 

Thanks.  Now this one worked.
--
"To invent, you need a good imagination and a pile of junk"  -- Thomas Alva Edison (1847-1931)


Re: digital s-meter/power meter forubitx

BruceN
 

Link isn't good.
--
"To invent, you need a good imagination and a pile of junk"  -- Thomas Alva Edison (1847-1931)


Re: digital s-meter/power meter for ubitx

BruceN
 

Huh?
--
"To invent, you need a good imagination and a pile of junk"  -- Thomas Alva Edison (1847-1931)


Re: Some Improvements to the stock V6 code #bfo #calibration #firmware #ubitxv6

shyamhegde
 

Thanks Guru. I loaded your work on my  uBitx V6 and everything works cool. Added features are helpful and interface is smooth with better color combo.


Re: Okay new quesetion #antennas #v6

Ralph Mowery
 

A SWR meter is all that is needed to adjust simple antennas.  However the nano VNA makes it easy to see where the antenna is resonate.  You can take them out to the antenna so you do not have to go to the shack to check the SWR.  Those things are really very accurate.  Much more so than you would think for an instrument under $ 100.  Go for the newer 4 inch screen .  They can also be hooked to a laptop for a large display.  If you have an extra $ 50 to $ 100 to spend I say go for it.

Ralph ku4pt


On Wed, Apr 15, 2020 at 1:11 PM Rene <rmvanb@...> wrote:
Hello i am thinking to buy an NanoVna analyzer. Maybe somone has  experience with the Bitx and anayzing his antenna etcetc???
Regards
Rene
Netherlands
_._,_._,_

,_


Re: Okay new quesetion #antennas #v6

ajparent1/kb1gmx <kb1gmx@...>
 

Russ,

All true until you get high enough and it starts going down.

I'd describe it as higher the closer to 70 ohms (natural impedance for dipole).
Also at less than .25 lambda the impedance is lower than 50 ohms and the length
will be shorter due to ground reflection and loading.


Allison
---------------------------------
No direct email, it goes to bit bucket due address harvesting in groups.IO


Re: ubitx v6 board only

Ismo Väänänen OH2FTG
 

How cheap was the 5A 14V smps supply used? 
As many cheap units lack some or all filtering to save a penny.
You could also have strong local qrm, have you tried any other receiver with the same antenna?


Re: Okay new quesetion #antennas #v6

Russ KG0BK
 

As the antenna raised (or lowered) from ground . . . the impedance changes.
The closer to the ground . . .the lower the impedance. Higher from the ground . . . the greater impedance.
You need to adjust the antenna at the point you will be using it from.
Surroundings in the vicinity of the antenna will also produce various VSWR.
Russ  KG0BK


Re: Okay new quesetion #antennas #v6

Rene
 

Okay nice John, i orderd 1😂😂


Re: digitial s-meter

James George <ki0ad2@...>
 

Too cool!


On Thu, 16 Apr 2020, 6:24 p.m. talmadge huckabee via groups.io, <thuckabee3=verizon.net@groups.io> wrote:
web address should have been forum.arduino.cc/index.php?topic=403234.0


Re: uBitx v.4 build information

Rubens Kamimura
 

Evan, 

Obrigado pelas imagens.
Consegui queimar mais IRF510, hoje a tarde.
Inclusive os condutores +B (13,8Vcc e +B PA Power).

Evan,
Thanks for the images. I managed to burn more IRF510, this afternoon. Including + B conductors (13,8Vdc and + B PA Power).

 73 PY2PVB

Rubens Kamimura



Em qui., 16 de abr. de 2020 às 17:11, Evan Hand <elhandjr@...> escreveu:

As promised in my prior replay, here is the link to the oscilloscope screen pictures that I took:
https://groups.io/g/BITX20/message/72786

Note that these are for test point 3 to 7 (in reverse order on the email).

Hope this helps.
73
Evan
AC9TU


digital s-meter/power meter for ubitx

talmadge huckabee
 

look at files/digital for upload files


digital s-meter/power meter forubitx

talmadge huckabee
 

While at home in lock_down i saw this Web site (Forum.arduino.cc/index?topic=403234.0)
about a adding a digital S-meter/power meter using a arduino board, it looked good project for my
cubit ver 5 radio so, I started to look to see what i needed to use this software.
My ubitx radio has the CEC firmware Ver 1.2 with a 5" Next ion display, also i installed
the Standalone Signal Analyzer(ic2 signal-meter).I uploaded pictures of the insulation
and drawings of the circuits. The vu meter is connected  to the microphone input on the
the ubitx board you'll need CEC firmware ver 1.2 to use it. Just press the TX STOP
Button then press the mic PTT Button then set Smeter/vu meter switch to vu, the oled
display will display microphone output level (there ubitx will not xmit).
The power meter scale needs to be changed the scale goes up to 100w, I need to change
it to read 30w scale.I use a arduino mini pro just becouse i had one!


If you feeling boring those days ....

Johan Holstein