Date   
Re: Made Mods to V3 uBitx - no longer transmitting #ubitx-help #v3

Steve - KE0VCD
 

Is there a document somewhere that explains the uBitx circuit and/or how to read the schematic.  I've attempted to understand the circuit but at this point, it's over my head. 

Re: Made Mods to V3 uBitx - no longer transmitting #ubitx-help #v3

Steve - KE0VCD
 

I attached wires to the posts on a 9v battery.  I then connected and disconnected the wires to the 8 and 9 pins on the relays.  I then used an ohmmeter to verify the coils were performing the way they should. (NO, NC, etc)  I did this on the underneath side which also verifies the relays are attached properly.   



Re: TSW Teensy 4.0 software with RTC coming soon #ubitx #v6

N0YWB
 

Just having a menu to manually set the time by listening to WWV or other time station would work. 
MultiPSK can decode the Date and time from various time stations, but that's overkill.

Re: The SAGA is COMPLETE!

Daniel Flanagan
 

Curt/Dean,

Yes... the CEC V1.2 has separate settings for SSB and CW. I've
adjusted mine by ear.... to get good sounding SSB I set the BFO so
that the background hiss is a little higher pitched than the CW
setting. I like a cw note around 450-500 Hz so I set the CW BFO so
the background hiss is just above that frequency range. Your mileage
may vary.

I haven't used split yet but have played with the other CEC settings
like Memory Keyer... which I cannot get it to do anything.... I
assumed you could save a message there but without a manual that
describes it I haven't figured it out yet.

The CEC firmware doesn't seem to have the accelerated tuning to change
frequency rapidly but allows the tuning rate to vary between 10, 50,
100, 500 and 1000 Hz. Also, when you do Band Select, it toggles
between the ham bands.

I used the built-in keyer during the contest. It's weight setting,
which can't be changed as far is I know without getting into the
firmware, is a bit off to my taste., but certainly usable.

I am still playing with the rig and new firmware. I was surprised how
easy it was to make contacts in the contest. Worked 71 countries on
20M. The only multipliers heard that I missed was ZL. I didn't hear
VK but worked about 10 JAs on 20M. I was only on for a few hours
Saturday and Sunday.

73, Dan (W3DF)

On 2/18/20, Curt via Groups.Io <wb8yyy=yahoo.com@groups.io> wrote:
Dan/Dean

my best effort to sort this out --

1. stock firmware has just ONE bfo calibration to make, because CW and SSB
are the same 'mode selection.'  and its the same for LSB/USB because of the
unique spectral flip in the RF chain

2. CEC firmware (I am not there yet ...) perhaps has more BFO calibration -
because it has separate CW and SSB mode setting(?).  I need to ask Dan about
how split works in CEC - he didn't need that in the contest, but I sure 'had
fun' using split to work some of the same stations after the contest.

73 Curt
just a few miles south of Dan BTW



Re: Made Mods to V3 uBitx - no longer transmitting #ubitx-help #v3

_Dave_ AD0B
 

You were in 80 or 40 and using a key to create a carrier? You used an ohm meter to confirm that the relay signal pathways are working, not just the coil?
--
73
Dave
k0mbt
Raduino bracket and Ham_Made_Keys

Re: sketch dds-vfo by eZall for bitx40 #arduino #bitx40help #radiuno #smeter

Don, ND6T
 

Perhaps you are referring to the EZall.ino V1.0.6 by ND6T? In that case those circuits are all described at: http://www.nd6t.com/bitx
The S-meter works best if you install the AGC circuit.
73,
Don

Re: Save power supply voltage for uBitx V6

MVS Sarma
 

For those who use battery, even a full charged battery showing 13 V odd, will go down to 12 very soon in less than a minute.
As such 12V is preferred.
 The only advantage could be little more gain on the Linear output.
 but another components like LM386 and few rf transistors like bfw93 etc might work at the edge of limit.
Sarma vu3zmv


On Tue, Feb 18, 2020 at 10:43 PM Arv Evans <arvid.evans@...> wrote:
Yes.



On Tue, Feb 18, 2020, 3:57 AM Eugen Sibler <efsibler@...> wrote:
Dear all
What is the save power supply voltage for the uBitx V6: 12 Volt or 13.6 Volt?
Thanks for your help
Eugen / HB9MDU

Re: Portable antenna(s) #antennas #v6

Don Gamble
 

Some portable operators have used vertical or near vertical off center fed dipoles for 20m.  It does change the radiation angles but it brings the feed point closer to you shortening the coax needed.  

Good luck with your antenna system.

73 de Don KG5CMS.

On Tue, Feb 18, 2020, 11:06 AM Doug W <dougwilner@...> wrote:
lots of good information over at https://groups.io/g/antennas/topics
--
www.bitxmap.com

sketch dds-vfo by eZall for bitx40 #arduino #bitx40help #radiuno #smeter

SaMa photo SaMa photo
 

I uploaded the sketch by eZall version 1.6.0, it has the possibility of the S-meter, the swr etc ...
Does anyone have the blueprints for the construction of the S-meter circuit, swr etc .. ???
Thank you

Re: Save power supply voltage for uBitx V6

Arv Evans
 

Yes.



On Tue, Feb 18, 2020, 3:57 AM Eugen Sibler <efsibler@...> wrote:
Dear all
What is the save power supply voltage for the uBitx V6: 12 Volt or 13.6 Volt?
Thanks for your help
Eugen / HB9MDU

Re: Portable antenna(s) #antennas #v6

Doug W
 

lots of good information over at https://groups.io/g/antennas/topics
--
www.bitxmap.com

Re: The SAGA is COMPLETE!

Curt
 

Dan/Dean

my best effort to sort this out --

1. stock firmware has just ONE bfo calibration to make, because CW and SSB are the same 'mode selection.'  and its the same for LSB/USB because of the unique spectral flip in the RF chain

2. CEC firmware (I am not there yet ...) perhaps has more BFO calibration - because it has separate CW and SSB mode setting(?).  I need to ask Dan about how split works in CEC - he didn't need that in the contest, but I sure 'had fun' using split to work some of the same stations after the contest. 

73 Curt
just a few miles south of Dan BTW

Re: Made Mods to V3 uBitx - no longer transmitting #ubitx-help #v3

Steve - KE0VCD
 

Using a 9V battery and an Ohm meter, I've confirmed that the KT1-3 and K3 relays all function correctly.   

Re: Made Mods to V3 uBitx - no longer transmitting #ubitx-help #v3

Steve - KE0VCD
 

K3 values in XMIT
1   =   0V               16   =  0v
3   =   0                 14   =  0
5   =   0                 12   =  0
8   =   0                 9    =  12v

KT1 values in XMIT
1   =   0V               16   =  0v
3   =   0                 14   =  0
5   =   0                 12   =  0
8   =   0                 9    =  12v

KT2 values in XMIT
1   =   0V               16   =  0v
3   =   0                 14   =  0
5   =   0                 12   =  0
8   =   0                 9    =  12v

KT3 values in XMIT
1   =   0V               16   =  0v
3   =   0                 14   =  0
5   =   0                 12   =  0
8   =   0                 9    =  12v

Re: Made Mods to V3 uBitx - no longer transmitting #ubitx-help #v3

 

In the V3 schematic it is 8/9 !


At 18-02-20, you wrote:
According to the diagram in #76128, it appears that 1/16 control the  coil.
--
73
Dave
k0mbt
Raduino bracket and Ham_Made_Keys

Re: Made Mods to V3 uBitx - no longer transmitting #ubitx-help #v3

_Dave_ AD0B
 

According to the diagram in #76128, it appears that 1/16 control the  coil.
--
73
Dave
k0mbt
Raduino bracket and Ham_Made_Keys

Re: Made Mods to V3 uBitx - no longer transmitting #ubitx-help #v3

 

Correct!

At 18-02-20, you wrote:
Let me see if I understand, as I stated above, the pin numbers on the relays as viewed from BELOW are as follows:
8 9
5 12
3 14

1 16

Instead, the pins numbers are:
1 16
3 14
5 12
(<<<<<note the gap between the pins on the physical relays)
8 9

Correct? Do pins 8 and 9 control the switching mechanism?

Re: Portable antenna(s) #antennas #v6

N1EDC
 

With regards tonsoace considerations, if you are going with a 20m monoband the support system could be pretty simple.

My first portable antenna mast was a 20ft Shakespeare Wonderpole that can be had for not much over $20 and is very light.  You could support a sloper EFHW for 20m with that.  I often leave the top section collapsed (for greater rigidity) and set up a 40m EFHW in an inverted V with that very setup.

I also have a Jackite 33ft pole that could do a 20m EFHW as a straight vertical, but that is significantly more in cost, weight, and guying requirements.

Re: Made Mods to V3 uBitx - no longer transmitting #ubitx-help #v3

Steve - KE0VCD
 

Let me see if I understand, as I stated above, the pin numbers on the relays as viewed from BELOW are as follows:
8    9
5   12
3   14

1   16

Instead, the pins numbers are:
1    16
3   14
5   12
            (<<<<<note the gap between the pins on the physical relays)
8    9

Correct?   Do pins 8 and 9 control the switching mechanism? 

TSW Teensy 4.0 software with RTC coming soon #ubitx #v6

Jim Sheldon
 

To all users of TSW's Teensy4 to NANO adapter and those thinking about getting one, we have successfully gotten the T4's internal real time clock to display the time on the upper left of the screen. We still have a few refinements that we're working on so it isn't ready for prime time just yet.  Right now, you simply touch on the clock display and that brings up a manual setting window.  We hope to have an alternate, more accurate means of setting the clock in the future, such as an attached GPS module or grabbing your computer's time via the USB port.  Maybe even both, with the GPS being an option.  Possibilities here appear to be close to endless.

One of the drawbacks, we are still trying to find a 3V coin cell holder that can be mounted either on the Adapter or the Teensy 4 itself, connected to the Vbat (back up battery) terminal on the Teensy to keep the clock accurate while main power is off. Right now we're having to make up one that's connected by a set of wires and just hung off of it. Mounting it on the adapter or Teensy interferes with the regulator's heat sink on the factory Raduino AND the speaker on the top cover of the factory case.  Not an elegant solution but it is usable for the time being.

We've also added an A>B button that will transfer the frequency in VFO A to VFO B as the basis for easier setup of the SPLIT function. Screen shot shows how the screen looks in our "Beta" test (may change slightly in the coming release version)

We hope to be able to release a usable version within the next few days so watch for it on the website.

Jim Sheldon, W0EB,
TSW Project Coordinator