Date   

Re: Look at this on eBay, ubitx, budget test equipment.

Robert D. Bowers
 

I took a look at it.  Simple, straight-forward, and most of the features I consider critical - you can do a lot with that.  If the battery test puts a small load on the battery while testing, that's a nice extra.  The small size is also a plus... and the voltage rating is sufficient for most uses.  (I wouldn't want to test a 480vac line with it!)

I'd be careful with the amps testing... no fuse.  A good idea would be to make an adapter that fit in the amps socket, which had a 10a fast-blow fuse that was replaceable.  They also have a time limit for that sort of tests, and I'd consider that the absolute maximum (better to be extra careful). 

All in all, not too shabby... good for general use.   I'd use one for a "tool-box" meter.

On 5/13/19 10:17 PM, Kelly Mabry wrote:

I use an innova 3320 dvm; it showed up in an issue in QST some months back. Its good for what it does. 

73, 
Kelly K5AID 


Re: treble only SSB modulation

Curt
 

Laurent

my best guess is the BFO calibration is off - shifting you passband to the high side.  possibly you might hear similar distortion on receive? 

try the instructions here, as required

Micro-BITX Calibration Instructions

(use CTRL click to launch the url - it goes to the K3PZN ubitx page)

the only other consideration is some ubitx owners report low transmit drive - see if you wattmeter at least moves on transmit?

Curt


Re: Flrig and uBitX not connecting

Sascha Bohnet | DL5SMB
 

Sorry, I'll take it back.
I just read that you wrote WSJTSX worked and checked the source code
  Init_Cat(38400, SERIAL_8N1);
  initSettings();
  initPorts();   
38400 is correct after all.

What version of flrig do you use? I mean when was it released? I think I remember the rig control library once had a problem.....

Sascha


Re: Flrig and uBitX not connecting

Sascha Bohnet | DL5SMB
 

Hi Vic,

I think you are using the wrong baud rate. Try changing to 19200 Baud - that should do the trick.
The correct speed is hardwired within  KD8CECs firmware. You can change it of course, but then you need will have to recompile the source code again.

Good luck

Sascha


treble only SSB modulation

laurent.bury@...
 

Hi there uBitx owners,

today a ham confirmed me that my modulation was only in the treble part of the audio spectrum: no bass and (that the most annoying) no medium frequencies to hear...

I wonder  if this a known and common problem, although I was not able to find something related while browsing the group's messages.

For information, I just use the electret mike as delivered with my V3 board.

Any comments ?

73s
--
Laurent F5FIE.


Re: Inexpensive eBay Amplifier Kits

Wayne Leake
 

 Now the one wants $140.xx for it, while the one in french is cheaper.
 A big difference, yes?
 Wayne WA2YNE



Re: Inexpensive eBay Amplifier Kits

Curt M.
 

Hi Joe, 

The filter set that Oliver has listed above is the one that I am using.  They used to be $50 or so which in my opinion was overpriced especially compared to what they are now.  I mounted mine filters in an aluminum enclosure with a switch on the front to select the individual bands.  Be sure to get yourself a fan to mount on the side of the heatsink.  Tehy ahve convienently pit a connector on the board to power the fan.

Here is an old picture of mine while I was still in the testing stages and before I mounted the fan on the side.  There is a heatsink and fan available on ebay that fits the board perfectly.  I also made a PTT cable up for when I use it with the FT-817ND.

Curt M.


Re: BITX40 First version (Through hole type) - Wiring Up diagram required

Wayne Leake
 

 Amateur radio kits for BITX units parts
 The parts are for a BITX20, but with modification can be for any band.
 They also sell some bare boards, through hole type.
  I have one that is for 40 meters, but I will be using it for a BITX20.
 Hope this is what you might want.
 neater by far than the manhattan style, and more compact.
 Though, using 2 boards, it takes a bigger cabinet than Farhans BITX40 and uBITX radios.
 Wayne WA2YNE


Re: How to stop worrying and love the uBitx #ft8 #cat #antennas #ubitx

Wayne Leake
 

 Looking at two pictures, it looks to be a NANO with a TFT, maybe touch screen?
 Interesting, being as I just received two NANOs, though planned to use one to make a clone of a raduino.
 Maybe both, in the back of my mind.
 For a dummy load, I havea commercial grade 100-110 watt dummy load that I got on Ebay some years back. It uses an RF resistor mounted to a large heat sink, well worth what I paid for it.
 I do have to use a UHF to N adapter, as it has an N connector.
 Lots better than the Cantenna was. Lighter, no worry about spilled oil of whatever type.
 I used transformer oil in the one I built. MY brother may have used mineral oil in his, being as he was less likely to search for, and find a source for transformer oil. Mine did leak a teeny amount through the pressure vent, just enough to make an oil/dust mix, LOL.
 Anyway, I'd kinda like to build this mini dummy load with meter for QRP testing.



Re: BITX40 First version (Through hole type) - Wiring Up diagram required

mitch prater
 

Thanks so much for the quick replies!

And thanks for the home-brew links. I'll read through those in the next couple of days. Ugly construction would be just as fun, so I'll probably go that route. I did notice there's a uBitx v5 - I presume I can find the schematic.
It's been a while, and I don't have any of my old (homemade) bench equipment any more; but I do like hand populating a PCB, so a kit would be ideal. However, as I said, I'll go with ugly construction assuming there's enough info on proper layout, etc. to give me a reasonable chance at ending up with something that works.

Thanks again - I'm so glad I stumbled onto the whole uBitx scene. I've been looking for a way to get back into amateur radio, and to start playing with micro-controllers. uBitx is perfect!

mitch


Re: BITX40 First version (Through hole type) - Wiring Up diagram required

Arv Evans
 

Mitch

I think that this is the last thru-hole kit of a BITX transceiver.  It should be possible to
add the Arduino, Si5351a, and LCD to one of these. 

In earlier days of the BITX phenomena many of us built our own BITX transceivers
using ugly-construction methods.  This involves standing thru-hole style components
on-end above a sheet of non-etched PCB material.  You could do this and add the
Arduino, Si5351a, and display as a front-panel.  Should not be too difficult and would
allow you to test each section as it is finished. 





Arv
_._


On Tue, May 14, 2019 at 10:45 AM mitch prater <mitchprater@...> wrote:
I would LOVE a through-hole pcb + bag of parts version of the latest uBITX (how I miss the old Heathkit days...)! Is there any possibility of such a thing? All I can find are sold-out kits of older versions.

mitch


Re: BITX40 First version (Through hole type) - Wiring Up diagram required

Jack, W8TEE
 

Really, the large size (1206) SMD parts are not that bad to use even for a pair of 76 year old eyes, plus resistors and caps are really much less expensive than through-hole. You could also shrink the board size a bit, since Farhan made it oversized to allow for experimenting. If the Gerbers could be edited, I think there would be some interest in the board.

Jack, W8TEE

On Tuesday, May 14, 2019, 12:45:45 PM EDT, mitch prater <mitchprater@...> wrote:


I would LOVE a through-hole pcb + bag of parts version of the latest uBITX (how I miss the old Heathkit days...)! Is there any possibility of such a thing? All I can find are sold-out kits of older versions.

mitch


Re: BITX40 First version (Through hole type) - Wiring Up diagram required

mitch prater
 

I would LOVE a through-hole pcb + bag of parts version of the latest uBITX (how I miss the old Heathkit days...)! Is there any possibility of such a thing? All I can find are sold-out kits of older versions.

mitch


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

jkstark@...
 

I'd take one when they are ready to go...

TNX

 

Kris - K2FIN


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

Poli
 

I am interested too.

Policarpo
VA3AGP


Re: Inexpensive eBay Amplifier Kits

Olivier Grand
 


Le mar. 14 mai 2019 à 17:57, Olivier Grand <olilou1961@...> a écrit :
Hello Joe ! Just have a look  there :
I've bought one for my 70W PA.
quite good stuff.
Regards
Olivier.


Le mar. 14 mai 2019 à 17:44, Joe Puma <kd2nfc@...> a écrit :
I just grabbed that 70 watt kit. Waiting for a heat sync and would need to get some multi band filtering. I think I saw something on eBay I’ll get. What are you using for filtering  Curt?

Joe
Kd2nfc 



On May 14, 2019, at 8:47 AM, Curt M. <Kc3hjp@...> wrote:

I built the 70w version of that amplifier.  The instructions are pretty much just a schematic with a few mistakes on it but it's not very hard to figure out what goes where.  I made some initial contacts with it connected to my FT-817 and a 40m filter on the output.  A few people said that my audio was a little distorted.  After doing some searching online it's been suggested to increase the bias by 1v.  I have not tried that yet but the guy's reasoning sounded logical.  It's a fun little kit to build.

With the Bitx radios you would have to get just a little creative to trigger the TX/RX relay but that shouldn't be very difficult.

Curt M.


Re: Inexpensive eBay Amplifier Kits

Olivier Grand
 

Hello Joe ! Just have a look  there :
I've bought one for my 70W PA.
quite good stuff.
Regards
Olivier.


Le mar. 14 mai 2019 à 17:44, Joe Puma <kd2nfc@...> a écrit :
I just grabbed that 70 watt kit. Waiting for a heat sync and would need to get some multi band filtering. I think I saw something on eBay I’ll get. What are you using for filtering  Curt?

Joe
Kd2nfc 



On May 14, 2019, at 8:47 AM, Curt M. <Kc3hjp@...> wrote:

I built the 70w version of that amplifier.  The instructions are pretty much just a schematic with a few mistakes on it but it's not very hard to figure out what goes where.  I made some initial contacts with it connected to my FT-817 and a 40m filter on the output.  A few people said that my audio was a little distorted.  After doing some searching online it's been suggested to increase the bias by 1v.  I have not tried that yet but the guy's reasoning sounded logical.  It's a fun little kit to build.

With the Bitx radios you would have to get just a little creative to trigger the TX/RX relay but that shouldn't be very difficult.

Curt M.


Re: Inexpensive eBay Amplifier Kits

Joe Puma
 

I just grabbed that 70 watt kit. Waiting for a heat sync and would need to get some multi band filtering. I think I saw something on eBay I’ll get. What are you using for filtering  Curt?

Joe
Kd2nfc 



On May 14, 2019, at 8:47 AM, Curt M. <Kc3hjp@...> wrote:

I built the 70w version of that amplifier.  The instructions are pretty much just a schematic with a few mistakes on it but it's not very hard to figure out what goes where.  I made some initial contacts with it connected to my FT-817 and a 40m filter on the output.  A few people said that my audio was a little distorted.  After doing some searching online it's been suggested to increase the bias by 1v.  I have not tried that yet but the guy's reasoning sounded logical.  It's a fun little kit to build.

With the Bitx radios you would have to get just a little creative to trigger the TX/RX relay but that shouldn't be very difficult.

Curt M.


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

Ted KB9SKP
 

Nick
One for me please 
Ted KB9SKP 


Re: Flrig and uBitX not connecting

Vic WA4THR
 

Update: I did download and update the driver to CH340, but that made no difference. Memory Manager still works, but Flrig does not.

However, i loaded WSJT-X and set it for the same COM port and as an FT817 and it controls and reads the rig fine, so the problem is only with Flrig.

=Vic=

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