Date   

Re: 1940 Sears Ham Radio Catalog

 

Classic..thanks for posting!


Re: Let the upgrades begin! #ubitxv6

Evan Hand
 

On Wed, Mar 3, 2021 at 08:28 PM, Evan Hand wrote:

I will keep looking and post it to the files section of the board if I find it.  You could also search there and on ubitx.net, though I have not found it yet.
Justin,

I finally got a backup 3.5" Enhanced Nextion display and was able to test the different versions of screen files.  Attached is the one that I am using.  You can see if it is more to your liking.

73
Evan
AC9TU


1940 Sears Ham Radio Catalog

Bob Lunsford
 

I never knew Sears had a Ham Radio oriented catalog
 

1940 Sears Ham Radio Catalog

 

https://www.waynekirkwood.com/images/pdf/Sears_Roebuck_1940_Radio_Amateur_Test_Equipment_Sound_Systems_Catalog.pdf

Enjoy a nostalgic look at the past



Re: 5.0" Nextion for uBitX V6 #ubitxv6 #nextion #ubitx6-help

Gyula Molnar
 

Hi Aaron,

You should read Ian’s KD8CEC page because he’s dealt with this display a lot in previous years.
Type in the search engine: http://www.hamskey.com/search?q=nextion

73, Gyula HA3HZ


UBitX/V0.20+ a nextion screen to be installed

Lal Jayasinghe
 

Dear Robert/AG6LK

Not-@-All,  Not-@-All,  Dear Robert & it  was rather a good gesture of you.
unfortunately we've, the  Govt.Supply of 220V A.C.  input so it is a separate power supply which I've to worry my head-over.

There was another Good Samaritan on the same group who wanted to know the version of my UBitX but then I shall go through the removing-the-cover and to have a peep on the board.

Hey Guys forgive me for not being Lazy,(Ha.....Ha....) Shall call back, but I am monitoring the  Group becoz I am a QRP Buff, though I have a TS430-S donated to me by Israel Amateur Radio Club/4X4WN. 

Be seeing you Dear Guys.

Thank You Mr. Farhan/VU2ESE for giving an affordable Txcvr

Good Day
73's
de 4S7LP/LAL J.


Re: ubitx v4 - CLK0,1,2 signal levels?

Adrian Chadd
 

On Wed, 10 Mar 2021 at 05:54, Jerry Gaffke via groups.io
<jgaffke=yahoo.com@groups.io> wrote:

Sounds like an output cell on the Si5351 got (mostly) blown.
Looking at the upper left corner of the uBitx schematic,
CLK2 is adjacent to the 12v supply pin to the Raduino.
Any chance that the Raduino got shifted over one pin and power applied?

The series cap for CLK2 on the Raduino would have mostly blocked that 12v,
but just charging the cap could blow that IO cell.

I don't recall other reports here of Si5351 outputs getting blown like this.
I mean, anything is possible!

Out of curiousity, how much current are the clocks supposed to supply
into the three mixers? The si5351 datasheet says its 2.2mA to 5mA, but
eyeballing those mixers, it looks like it could be a bit more?


-adrian
(kk6vqk)


What is the BEST fist microphone to use the BITX 6.0

mister35mm <mister35mm@...>
 

Hello boys and girls...

What I want to know is:-

1. What is the BEST fist microphone to use the BITX 6.0 ? Ideally, I want something I can use, WITHOUT modifying the radio. I have an Astatic D104 fist microphone, which has amplification, but no speech processor or compression.

2. Has anyone installed an internal ATU or a battery pack.

Regards

Stephen
G7VFY


Re: Good place to tap for PTT-OUT #v5

_Dave_ AD0B
 

An easy place is  the the TX/rx relay driver transistor I went from the base of that transistor and added in a second driver transistor and relay. You might just need the transistor and drive the output to your amp or what ever. 
--
73
Dave
ADOB
Raduino bracket and Ham_Made_Keys


Re: Let the upgrades begin! #ubitxv6

Robert AG6LK
 

Hi Justin,

I really like your setup. It's pretty sweet looking. I just ordered a v6 yesterday from Gigaparts. It'll be here on Friday. I  just ordered the Mic that you suggested from Amazon thanks for the tip.
I also ordered a 3.5" Nextion enhanced display last week and it was just delivered yesterday. what's enhanced about it I don't know yet, I guess I'll see, I'm not sure how the Nextion sets up to the v6. I've seen that other people have put the 3.5" Nexton in their v6, so I know that it can be done. The only problem is they never explain in their post how they installed it. I was hoping you would explain how you installed yours, Can you also point me in the right direction for the correct tft file? I would greatly appreciate it. 

Thanks in advance, 73.

Robert, AG6LK


Re: Good place to tap for PTT-OUT #v5

Jerry Gaffke
 

Yes, the TX rail has 12v on it whenever the rig is transmitting, 0v when it is not.
Probably your best choice, and easy to tack a wire on it.

Does your amplifier really want a 12v signal, or something more like 5v?
How much current will the amplifier draw from this signal?

I would think about limiting the current somehow, perhaps a series resistor inside the uBitx.
Otherwise a miss-wire in the cable could cause 10 Amps to flow, and lots of smoke.

Jerry, KE7ER


On Tue, Mar 16, 2021 at 10:38 AM, Rob French (KC4UPR) wrote:

I'm looking to add a PTT-OUT to the back panel of my uBITX, to control e.g. an amplifier or a switch to isolate an external SDR during transmit.

My thought is to grab C154/D11 or one of the other filter-switching relay circuits.  Those look like easy places to tack a short wire to without having to completely disassembly my uBITX.

Two quick questions:
(1) Dumb question... but that junction does provide what I want, right?  i.e. +12V on transmit.
(2) Any downsides to tapping the +12V on transmit, from that location?  e.g. some RFI effect

Thanks,
Rob KC4UPR


Re: 5.0" Nextion for uBitX V6 #ubitxv6 #nextion #ubitx6-help

K2ICC
 

Upgrade the regulator to feed the screen needs.


On Tue, Mar 16, 2021 at 6:28 PM Aaron K5ATG via groups.io <k5atg=yahoo.com@groups.io> wrote:
I'm wanting to upgrade to a larger Nextion and I came across this 5" one.
5.0" Nextion NX8048T050 TFT HMI USART Intelligent Touch Display LCD Module 16M

5" Nextion Display

Would it work with the uBitX v6 and would it be much harder to use than the 2.8 Nextion? 
Also, would a 5" Nextion be able to display more than the 2.8" or is everything on the screen is magnified? 
--
'72
Aaron Scott
QRPARCI# 16443
GQRP# 16389
4SQRP # 1080


Re: 5.0" Nextion for uBitX V6 #ubitxv6 #nextion #ubitx6-help

Evan Hand
 

Aaron,

I have not used a 5" screen.  I have used a 2.4", 2.8", 3.2", and a 3.5" Nextion.  They have all worked the same to the most extent, though some of the Nextion programs have more features than others.  I could not see any issue with going to the 5" display as long as you can find the right Nextion files for it.  There are some in the files section here and on ubitx.net.

One key thing to consider is the supply for the larger screen.  I would recommend adding a second 5volt regulator just for the larger screen.  I have seen them mounted to the case for heat transfer and then run the power to the screen with a common ground for the data lines.

To get a feel for what is in the Nextion program, you can use the Nextion editor and load the .hmi file then run in debug mode.

Above are my thoughts, you may want to wait to hear from someone who has used the larger screen.
73
Evan
AC9TU


Re: Power supply for uBITX ... 12V 3A

Arv Evans
 

Most switching supplies respond well to having a 0.1 mfd and a 4000 mfd
capacitors across the output, right at the power supply end of the cable.  It
is difficult to get noise through that combination.

Arv
_._


On Tue, Mar 16, 2021 at 7:58 AM <mikebw+groupsio@...> wrote:
I don't personally have one, but people who put these inexpensive switching power supplies on oscilloscopes to look at their output often recommend the Mean Well brand, which is almost twice as expensive (USD33) compared to the generic brands (USD18) but still quite reasonably priced.

https://www.amazon.com/dp/B0109IMRPS/ — MEAN WELL LRS-350-12 348W 12V 29 Amp Single Output Switchable Power Supply

The Mean Well LRS series is fine for amateur radio use, about half the price of the Mean Well RSP series that includes remote sensing (which would be of little value in this application).


5.0" Nextion for uBitX V6 #ubitxv6 #nextion #ubitx6-help

Aaron K5ATG
 

I'm wanting to upgrade to a larger Nextion and I came across this 5" one.
5.0" Nextion NX8048T050 TFT HMI USART Intelligent Touch Display LCD Module 16M

5" Nextion Display

Would it work with the uBitX v6 and would it be much harder to use than the 2.8 Nextion? 
Also, would a 5" Nextion be able to display more than the 2.8" or is everything on the screen is magnified? 
--
'72
Aaron Scott
QRPARCI# 16443
GQRP# 16389
4SQRP # 1080


Good place to tap for PTT-OUT #v5

Rob French (KC4UPR)
 

Hi,

I'm looking to add a PTT-OUT to the back panel of my uBITX, to control e.g. an amplifier or a switch to isolate an external SDR during transmit.

My thought is to grab C154/D11 or one of the other filter-switching relay circuits.  Those look like easy places to tack a short wire to without having to completely disassembly my uBITX.

Two quick questions:
(1) Dumb question... but that junction does provide what I want, right?  i.e. +12V on transmit.
(2) Any downsides to tapping the +12V on transmit, from that location?  e.g. some RFI effect

Thanks,
Rob KC4UPR


Re: Power supply for uBITX ... 12V 3A

mikebw+groupsio@...
 

I don't personally have one, but people who put these inexpensive switching power supplies on oscilloscopes to look at their output often recommend the Mean Well brand, which is almost twice as expensive (USD33) compared to the generic brands (USD18) but still quite reasonably priced.

https://www.amazon.com/dp/B0109IMRPS/ — MEAN WELL LRS-350-12 348W 12V 29 Amp Single Output Switchable Power Supply

The Mean Well LRS series is fine for amateur radio use, about half the price of the Mean Well RSP series that includes remote sensing (which would be of little value in this application).


Re: Power supply for uBITX ... 12V 3A

mikebw+groupsio@...
 

I've had no problems with RF noise from this supply:
https://www.amazon.com/dp/B01EWG6YT8/ — BMOUO 12V 30A DC Universal Regulated Switching Power Supply 360W

I did install ferrite chokes on the AC input and DC output cables, but as a precaution because I was not having any problem before:
https://www.amazon.com/gp/product/B088LNB2DT/ — Pack of 20pcs Clip-on Ferrite Ring Core Black RFI EMI Noise Suppressor Cable Clip



Re: Are all the Bitx version fundamentally the same?

Evan Hand
 

Eli,

Have you tried the "Fake It" setting in the WSJT-X setup?  It adjusts the radio frequency to allow for a wider passband.  An example would be moving the received (and transmit) frequency to allow get around the narrow SSB filter.  Opens up using frequencies above 2.8KHz or so.

A good and detailed explanation of the steps to use FT8 (or other) digital modes with the µBITX

73
Evan
AC9TU


Re: Are all the Bitx version fundamentally the same?

Robert AG6LK
 

Eli,

I have a a Signalink USB & I just came across this video on YouTube: https://youtu.be/dXha5UynvkE. 
Do you think if I made this cable for my Signalink interface & used a usb cable from the PC to the uBitx that it woul work? I don’t think I would need any other cables, would I?

What type of USB connection is on the uBitx v6, is the normal USB connector?

I know I’m throwing quite a few questions at you. I really do appreciate taking the time to help me out. Thank you.

Robert, Ag6lk 


Re: Are all the Bitx version fundamentally the same?

Eli, KO4LGS
 

Robert,
This is how I set up for FT8. I haven't tried much else. All of this is on a windows PC...although I have a rasperry Pi I may switch to.

I am doing the following:
1. Installed WSJT-X- https://www.physics.princeton.edu/pulsar/k1jt/wsjtx.html
2. Installed a timesynctool- https://forums.qrz.com/index.php?threads/wsjt-x-and-setting-windows-10-clock-seconds.592212/
3. Connect uBITX to PC via USB cable
   3a. Check Device Manager for COM port
4. Connect uBITX to PC via USB Sound Card- uBITX Mic to PC Earphone/uBITX speaker (front panel) to PC Mic
  4a. I had to "customize" the Audio cable from the USB soundcard to uBITX- https://groups.io/g/BITX20/message/84452
5. Turn On uBITX (with antenna connected)
6. Check Settings (configuration) in WSJT-X-
  6.a Radio
    Rig: Yaesu FT-817
    Serial Port: COM8 (based on step 3, not that this can change if you plug in to a USB hub instead)
     Baud: 38400
     Data Bits, Stop Bits, Handshake- All Default
     PTT Method; CAT
     Mode: USB
    Split Operation: Rig
    PTT method: CAT
  6b. Audio
   Input: USB Sound (step 4)
   Speakers: USB Sound  (step 4)
7. Cross fingers....

Actually, this worked well. WSJT is doing the PTT no trouble. I probably could have used the sound ports on my PC as well, but I had the USB device lying around, and could limit the sounds going to it while still hearing my PC through regular audio.

Contact me if you need more information.

Regards,
Eli
KO4LGS


   

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