Date   
Re: Britx 40 Raduino Help

Michael Hagen
 

That is a uBit Raduino??? Not BitX

On 6/24/2019 6:40 AM, mtngentleman@... wrote:
i am attempting to assemble a Britx 40.

Instructions call for "connect a 5 pin connector to the bottom side of the Raduino"

There is none on the board.

Do I have the wrong board or is there a work around? (picture)

Any help appreciated

AA7MH


-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...

Re: Bitx40–Apollo Quindar Tones #bitx40

bobolink
 

Hi Allison,
This was just decoration for the Apollo 11 50th Commemoration but with all the power in one tone I was thinking it would announce that a QRP station was on frequency and extra effort might be made to dig the signal out.
But people might get angry as above—so no.
Demo with some audio feedback

Re: Britx 40 Raduino Help

Vic WA4THR
 

BitX40s and uBitXs use the same physical Raduino assembly, which has gone through several arrangements of components over time, but is electrically the same. It comes with different software loaded from the factory depending on which rig it is supplied for. The instructions for the BitX40 are admittedly confusing as it shows the original configuration with separate 5 and 8-pin connectors, but they still work. You need to connect the 5 wire connector to the pins closest to the blue contrast pot and just ignore the other pins for the BitX40. Just make sure the yellow lead is on the end pin.

=Vic=

Ubitx occasionally hanging in transmit while receive led is on. Have to hit cw key a few times to get it unstuck. Ideas? #ubitx

John Faivre
 


--
John Faivre WA9SGD

Re: Britx 40 Raduino Help

Michael Hagen
 

Ubit Raduino was adapted from the BitX, but they are different.

Ubit has male pins plugging into Radio PCB.?? They do not swap over.

73s

Mike, WA6ISP


On 6/24/2019 1:53 PM, Vic WA4THR via Groups.Io wrote:
BitX40s and uBitXs use the same physical Raduino assembly, which has gone through several arrangements of components over time, but is electrically the same. It comes with different software loaded from the factory depending on which rig it is supplied for. The instructions for the BitX40 are admittedly confusing as it shows the original configuration with separate 5 and 8-pin connectors, but they still work. You need to connect the 5 wire connector to the pins closest to the blue contrast pot and just ignore the other pins for the BitX40. Just make sure the yellow lead is on the end pin.

=Vic=
-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...

Re: Ubitx occasionally hanging in transmit while receive led is on. Have to hit cw key a few times to get it unstuck. Ideas? #ubitx

_Dave_ K0MBT
 

You have some common mode RF floating around. Start by choking the coax. Google w1his, He has some complete thoughts about common mode issues and shack noise.

Re: Ubitx occasionally hanging in transmit while receive led is on. Have to hit cw key a few times to get it unstuck. Ideas? #ubitx

Sam Tedesco
 

Sticky relay. Lightly smack the relay (off by itself) with the handle of a screwdriver. 

Mag Loop for HOA's??

Jack, W8TEE
 

All:

We took Al's Double-Double mag loop:
Inline image
for a spin at FD. We ran 100W on 20M and 40M. First, we were surprised how well it performed for a "compromise" antenna. We worked 40M on Saturday and worked KS to ME, WI to FL. We even managed to work pileups, often towards the front of the pile. The stepper controller looks similar to this:

Inline image
although this photo was taken before the software was finished. Two encoders control the "target" frequency (e.g., 7199995) and the stepper motor, with the SWR calculated using an AD9850 as a signal source. The final version shows a 100-point plot of the SWR as you tune the cap to resonance on the target frequency. The cap position and frequency are very close to linear, so the final version will "fast step" to the target frequency and the encoder can then fine tune from there. We can tune to 1.1:1.0 on 40-30-20M. The display is a small 2.2" TFT display, but any SPI TFT using the ILI9341 driver could be used.

Quite honestly, Sunday wasn't as good. We concentrated on 20M and we were expecting better performance. (The models say it should perform better on 20M.) We didn't hear as many stations as on 40M on Saturday, but we're not sure if it was all antenna, band conditions, or a mixture of both. Al and I will be writing an article on its construction in a little bit after some testing that will give us some concrete numbers. We are devoting one chapter in the new Projects book to its construction and a second chapter to the stepper controller.

I will be trimming off the "spike" at the top for mine, which will allow it to fit in my car trunk. (I want to call it the "Luggable Double-Double", but Al doesn't like it.) Anyway, it will all be put into Open Source and we hope that some HOA-bound hams might find it useful since its 3' diameter might fit in an attic or somewhere else that the HOA considers acceptable.

BTW, I hope your club had as much fun at FD as we did...despite some rain.


Jack, W8TEE
Al, AC8GY

Re: Antuino

WoodJRx@...
 

I just thought i'd add that I just swapped my Antuino over to openGLCD, from the deprecated original GLCD.  I'm no programmer, just trying to be a tinkerer and teach myself.  I've figured out how to make a testing branch on github.  If anyone else would be willing to make sure my changes work (they do here, at least), I would greatly appreciate it!  As Bruce says - Use at your own risk!

My testing branch is https://github.com/woodjrx/antuino/tree/testing

I love the idea of the lookup table - but I need to get a step attenuator to test against, first!

~Josh
W0ODJ

Re: Britx 40 Raduino Help

 

His is a picture of my original without the display. Hope that gives you the idea where to connect the 5pin.

Raj

Emacs!


At 24-06-19, you wrote:
i am attempting to assemble a Britx 40.

Instructions call for "connect a 5 pin connector to the bottom side of the Raduino"

There is none on the board.

Do I have the wrong board or is there a work around? (picture)

Any help appreciated

AA7MH

Re: trick to soldering in L5 and L7 or why did spurs on 80/40 get worse and 20/10 get better...

Mark Hatch
 

I am all set. All bands legal (USA) for CW except for 10m where the secondary harmonic is only -30 down. 

73
Mark
AJ6CU

Re: Ubitx occasionally hanging in transmit while receive led is on. Have to hit cw key a few times to get it unstuck. Ideas? #ubitx

MVS Sarma
 

Did you wire up the 4k7 resistor from Vcc ro cw wire?


On Tue, 25 Jun 2019, 8:54 am Sam Tedesco, <stedesco619@...> wrote:
Sticky relay. Lightly smack the relay (off by itself) with the handle of a screwdriver. 

Re: trick to soldering in L5 and L7 or why did spurs on 80/40 get worse and 20/10 get better...

 

Mark I have both S+M and A T, both are working fine on my many test boards.
Every board is very individual in behaviour. I have some which put out lots of power
and some low power out. I have not figured out why as yet.

Some boards I changed only L5 and that was enough. Any RF pickup by L7 is removed by
the filter Y1 during TX.

Raj


At 24-06-19, you wrote:
Raj,

Thank you very much!

However, I am worried that the inductors I have are not the exact same ones you used. I got them from another HAM that ordered them thru the same supplier that you used, but EBAY suppliers have been know to substitute.

Mine are orange/yellow and are marked "A" and "T" and R68K 1145. However, in your post#60946 you said that they were Marked "S+M". I assume the 68k means 680nh? Perhaps the A+T vs S+M is a country/manufacturing plant?

Thoughts?



I suspect that the apparent power loss on 80/40 is not true. I measured harmonics/spurs 4x. For the Primary:

Band                    1st                     2nd                      3rd                         4th (after l5/l7 replaced)
80                       -65                       -64                      -57                        -65
40                       -67                       -67                      -65                        -70

80M looks like man outlier. And i really don't knew what i am doing with the SDRPLAY spectrum scope software, so mistakes could creep in.


40M does look lower after inductors. I am going to re-measure later today.

73
Mark
AJ6CU

Re: trick to soldering in L5 and L7 or why did spurs on 80/40 get worse and 20/10 get better...

Mark Hatch
 

Raj,

I am sure you hear this a lot, but a big thanks for working on the purity issues with the uBitx. Myself, and many others would have been lost without your (and of course others) hard work here. Thank you!

73
Mark
Aj6Cu

Re: Mag Loop for HOA's??

Mark Hatch
 

I think i know what my next project is after finishing my JackAl radio. :-)

I think this would make my 3rd project based on your work. So much fun!
:-)

73
Mark
AJ6Cu

Re: Ubitx occasionally hanging in transmit while receive led is on. Have to hit cw key a few times to get it unstuck. Ideas? #ubitx

MVS Sarma
 

Better replace k1 relay


On Tue, 25 Jun 2019, 8:54 am Sam Tedesco, <stedesco619@...> wrote:
Sticky relay. Lightly smack the relay (off by itself) with the handle of a screwdriver. 

Re: Mag Loop for HOA's??

Floyd Hollister
 

Jack and Al,  This is a neat project and I look forward to youir article. 73, Floyd K2DUV

uBitx not receiving well on CWU or CWL

Mike Kilpatrick
 

my uBitx is receiving and transmitting very well on SSB. 

I can receive CW signals very well in USB or LSB mode.  But when I select CWU or CWL mode signals drop right off and are barely audible. 

I have V5 board and CEC firmware. 

Any my suggestions would be really appreciated please. 

Re: VK4PP Ultimate uBitx Daughter Board. #ubitx #filters #parts

Dennis Beverage
 

Me too! and much thanks for efforts to really help all of us.  I’ll want one board for my my V4.

sodypop
KJ6VGB

Re: Mag Loop for HOA's??

ke6bgn@...
 

Jack,
Do you think this controller would be able to be used with the MFJ loops fairly easily? If so, this could be an excellent alternative to the manually driven setup that the factory setup provides.
--
73 de RC.....KE6BGN