Date   

Re: Are the uBITX receivers ripe for improvement? -- And some other miscellaneous thoughts.

w2ttt <w2ttt@...>
 

Bo,
I was thinking about using my SDR Play 2 behind the bandpass filters of the uBITX and powering it with either an RPi3 or an old 2.5 GHz ATOM.  The latter would give me choices for logging and support software either using Windows or Linux.  I might even use both with the RPi3 running the SDR Play 2 and the ATOM running logging, spotting, antenna and station control, etc.  The ATOM is a Jetway with lots of serial, parallel, USB and even GPIO.  It also has decent video and disk controllers on board with a modest power requirement.
I have run mine with a SSD and a 9-16V ATX power supply module which is good for portable operation.

Lots of choices!
73,
Gordon Beattie W2TTT
201.314.6964

From: Bo Barry
Sent: Sunday, May 13, 6:38 PM
Subject: Re: [BITX20] Are the uBITX receivers ripe for improvement? -- And some other miscellaneous thoughts.
To: bitx20@groups.io


After listening to mine today on FT8  I'd say the RCVR I'd just fine. Or mighty fine!

It's been a joy listening to CW, SSB, & FT8  today.
I have problems on the transmit for another post.

Definitely interesting for projects with the pi and ubitx.

Bo W4GHV 



Re: UBITX Assemly Wiki Page #ubitx

ajparent1/KB1GMX <kb1gmx@...>
 

One small point. 

If your using diode for reverse polarity protection it is better to place the
fuses BEFORE the diode as then the fuse blows and the diode is less
likely to be fried and also down stream circuits.


Allison


Re: UBITX Assemly Wiki Page #ubitx

david todd <kg9rb@...>
 

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--------------------------------------------

On Sun, 5/13/18, W7PEA <patrick@deepplaya.com> wrote:

Subject: Re: [BITX20] UBITX Assemly Wiki Page #ubitx
To: BITX20@groups.io
Date: Sunday, May 13, 2018, 8:35 PM

I updated the Assembly page with
pictures, no making fun of my soldering. ;-)

I
could use help with two things as I did not do a vanilla
installation of these two.
1. The microphone 
2. The Keyer

If you did a no-modification
build, please snap some pics and post them or send them to
me and I'll do it.

Thanks!
W7PEA


Re: ubitx 9 bands in 1 day

kg9rb@...
 

Great job!😀
I work qrp also.looking forward to rebuilding my antennas. Several years ago I qualified for the 1000 mile a watt award.

But I was using an Argonaut 509. Great job!






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--------------------------------------------

On Sun, 5/13/18, Tom Christian <tmchristian@gmail.com> wrote:

Subject: [BITX20] ubitx 9 bands in 1 day
To: BITX20@groups.io
Date: Sunday, May 13, 2018, 8:51 PM

The uBITX continues to be great
fun!  As per the attached logbook snapshot, I was able
to work 9 bands in 1 day last week with 10 meters through 80
meters.  The contact on 10 meters was only a quarter
watt on the power meter but a contact is a
contact!......:)  I don't yet have 160 meters up
and running so I couldn't try for 10 bands.  The
uBITX results continue to amaze me!  Great rig!
Tom
AB7WT


Re: UBITX Assemly Wiki Page #ubitx

W7PEA
 

Hey Bo, 

According to all drawings and the HFSignals wireup page:

  • Tip is Mic
  • Ring is PTT
I hope that helps


Re: can I bypass the CP2102 chip on the NANO with an FTDI based serial adapter? #arduino #cp2102 #ftdi #nano

Jerry Gaffke
 

Should work fine.
Note that the Nano has an FT232RL USB-to-serial chip that includes a 5v to 3.3v regulator. 
This currently powers the si5351 through the Nano's J2 pin 14.  On the clones, it's CH340 chip.
    https://www.arduino.cc/en/uploads/Main/Arduino_Nano-Rev3.2-SCH.pdf

You will need to replace that regulator with something else if you remove our CH340 chip.
This new 3.3v regulator could be mounted on the Raduino board.

Jerry


On Sun, May 13, 2018 at 06:21 pm, Nick VK4PLN wrote:
I was wondering something similar, to remove the USB section of the Arduino Nano to clean up any birdies caused by it.. thoughts?


Re: UBITX Assemly Wiki Page #ubitx

Bo Barry <bobarr@...>
 

Can you verify that the orange PTT goes to the sleeve? It is shown to the tip on the Randino schematic I found
Bo W4GHV


Re: can I bypass the CP2102 chip on the NANO with an FTDI based serial adapter? #arduino #cp2102 #ftdi #nano

Nick VK4PP
 

I was wondering something similar, to remove the USB section of the Arduino Nano to clean up any birdies caused by it.. thoughts?

Nick VK4PLN


ubitx 9 bands in 1 day

Tom Christian
 

The uBITX continues to be great fun!  As per the attached logbook snapshot, I was able to work 9 bands in 1 day last week with 10 meters through 80 meters.  The contact on 10 meters was only a quarter watt on the power meter but a contact is a contact!......:)  I don't yet have 160 meters up and running so I couldn't try for 10 bands.  The uBITX results continue to amaze me!  Great rig!
Tom
AB7WT


Re: UBITX Assemly Wiki Page #ubitx

W7PEA
 

I updated the Assembly page with pictures, no making fun of my soldering. ;-)

I could use help with two things as I did not do a vanilla installation of these two.
1. The microphone 
2. The Keyer

If you did a no-modification build, please snap some pics and post them or send them to me and I'll do it.

Thanks!
W7PEA


Re: Broadband HF Folded Dipole Antennas

Gordon Gibby <ggibby@...>
 

I really need to purchase EZNEC or something similar, because I need to be able to run some reasonable simulations.

On May 13, 2018, at 18:41, Gordon Gibby <ggibby@anest.ufl.edu> wrote:

Thanks, Allison!
On May 13, 2018, at 14:26, ajparent1/KB1GMX <kb1gmx@arrl.net> wrote:

r


Re: BITX QSO Afternoon/Evening, Sunday, May 13, 3PM & 7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere.

John P
 

On Sun, May 13, 2018 at 04:37 pm, Tom VE3THR wrote:
they are starting to come out of the woodwork. Hearing stations from Nova Scotia VE1ESP to Alabama.
I hear one other station intermittently. Lots of QRN here.
 
--
John - WA2FZW


Re: BITX QSO Afternoon/Evening, Sunday, May 13, 3PM & 7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere.

Tom VE3THR
 

they are starting to come out of the woodwork. Hearing stations from Nova Scotia VE1ESP to Alabama. 


Re: Buyer beware! RD16HHF1

Fred Cooper <g4zwim@...>
 

Bear in mind,....   sometimes when you buy RD16HHF1 fets  from EBay, China... you don't always get what you expect,.......



Sent from Samsung tablet.

-------- Original message --------
From: K9HZ <bill@...>
Date: 13/05/2018 22:07 (GMT+00:00)
To: BITX20@groups.io
Subject: Re: [BITX20] Buyer beware! RD16HHF1

Much of it is already captured on UBITX.net

 

 

 

Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ

 

Owner - Operator

Big Signal Ranch – K9ZC

Staunton, Illinois

 

Owner – Operator

Villa Grand Piton – J68HZ

Soufriere, St. Lucia W.I.

Rent it: www.VillaGrandPiton.com

Like us on Facebook! facebook icon

 

Moderator – North American QRO Group at Groups.IO.

 

email:  bill@...

 

 

From: BITX20@groups.io [mailto:BITX20@groups.io] On Behalf Of Gordon Gibby
Sent: Sunday, May 13, 2018 11:54 AM
To: BITX20@groups.io
Subject: Re: [BITX20] Buyer beware! RD16HHF1

 

​I don't know if y'all have already done that....but writing up a little "white paper"" and putting it on the web site about little bite-size improvement steps like going to the RD16HHF1 for example, would make very helpful little bite-sized projects.    Again, you may have already done all that.

 

I'm submitting gerber files right now to get my cheap homebrew soundcard-interface done as prototype batch --- it is very similar to the EasyDigi but includes gain potentiometer trimmers and a RELAY for the push to talk, LED ptt indicator.    If it works....it will be freely available.   The previous (expensive-PCB-company-version) went through about 40 [expensive]  copies locally and elsewhere and many are 24/7/365 in service).    You guys have taught me a lot!!!!

gordon

 

 


From: BITX20@groups.io <BITX20@groups.io> on behalf of Jerry Gaffke via Groups.Io <jgaffke@...>
Sent: Sunday, May 13, 2018 12:30 PM
To: BITX20@groups.io
Subject: Re: [BITX20] Buyer beware! RD16HHF1

 

Also, keep in mind that if you plan to move from the IRF510 to the RD16HHF1, 
the uBitx final should have some adjustments to the transformer ratios and such.
The RD16HHF1 is not quite a drop in replacement.

Jerry


On Sun, May 13, 2018 at 09:17 am, Jerry Gaffke wrote:

Allison has quite a few posts here.
None have discouraged experimentation with the IRF510's.
Quite the contrary.

She did however suggest you get your RF parts from reliable vendors,
be they IRF510's or RD16HHF1's.

Jerry

. . .

 


On Sun, May 13, 2018 at 08:54 am, Russ Hines wrote:

Gents and ladies, I don't post much as I'm a busy broadcast engineer.  But I try to read often.
Allison's post contains wisdom.

Education tends to be expensive.  If your goal is IRF R&D, then knock yourselves out.  You will go through a lot of parts, and likely as not, spend a lot more time and money in acquiring the knowledge and experience.  In the end, you'll know what a part can or cannot do.  If that's YOUR goal, great.

For myself, my time is worth something to me.  I think it's false economy of both my time and money to blow up a few dozen $0.50 parts, chasing issues created by the selection of an inferior part from an unreliable source, when one appropriately selected and sourced $4.75 part will accomplish MY goal - to use a piece of equipment that I built.  The former is not worth the hassle.

If you need a cliche, here's two:  I'd like to "not reinvent the wheel," but would much rather "stand on the shoulders of giants."

Two cents duly submitted.

73,
Russ Hines
WB8ZCC
--
Reply to: russ@.


Virus-free. www.avg.com


Re: using the BITX on RTTY

freefuel@...
 

Hans, would it be possible to pull the crystals in a filter using the LED or Zenor Varicap diodes? 

-Justin N2TOH 


CAT question, audio connection for digital, residual signal observed on waterfall of Icom 7300 #ubitx #ubitx-help #ft8

Bo Barry <bobarr@...>
 

I setup for the FT-817 38400 baud and do have transmit control. Am I supposed to have more (frequency control, etc) with fldigi & wsjtx or just transmit/PTT control??

I see a conflict on two schematics for the PTT and MIKE connections on the jack. Does the orange PTT go to the tip or sleeve??

It also goes into transmit when I turn up the audio gain on the external usb sound card. I can hear the modulation signal in the headphones but all I have is a rough signal at the dial frequency visible on my Icom receiver, with the RF gain turned way down.

Work with the o'scope is next.   It does appear to work fine on CW with a paddle, so the thought of a QSO excites me. :)

Ideas appreciated.

Bo W4GHV


Re: BITX QSO Afternoon/Evening, Sunday, May 13, 3PM & 7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere.

John P
 

I'm on with Tom, VE3THR with pretty good signals! Anyone else on?
--
John - WA2FZW


How to change the default power-on 7.150 MHz frequency on µBITX

Yves vk2auj
 

I wanted my  µBITX to power-on on our club meeting frequency, instead of having to navigate to it every time.  Couldn't find any documentation on how to set the default frequency which is (was) 7.150 MHz.  


Found this trick by accident, it might be documented, but just in case, here it is.


- turn on the radio;

- set the desired frequency on VFO A;

- set menu option: VFO B;

- turn off the radio whilst on VFO B et voilà.


You can also set the default VFO B frequency by selecting the VFO B frequency and turning off the radio on VFO A.


Yves vk2auj

http://www.mwrs.org.au/2018/04/23/μbitx-project/

www.mwrs.org.au
Just had to build one of these www.hfsignals.com/index.php/ubitx/.. I used to have a KX3, but what I really wanted was a lunch box radio I could just leave on the ground outside.




Re: Broadband HF Folded Dipole Antennas

Gordon Gibby <ggibby@...>
 

Thanks, Allison!

On May 13, 2018, at 14:26, ajparent1/KB1GMX <kb1gmx@arrl.net> wrote:

r


Re: Are the uBITX receivers ripe for improvement? -- And some other miscellaneous thoughts.

Bo Barry <bobarr@...>
 

After listening to mine today on FT8  I'd say the RCVR I'd just fine. Or mighty fine!

It's been a joy listening to CW, SSB, & FT8  today.
I have problems on the transmit for another post.

Definitely interesting for projects with the pi and ubitx.

Bo W4GHV