Date   
Re: More pins for the Raduino! An RF gain control for the uBITX!

VE7WQ
 

Thank you Dexter,


it's getting better and better all the time. 

I'll delay my shopping for a while :)


73! George

VE7WQ


Wednesday, February 21, 2018, you wrote:

DNM> All above, plus ease of procurement: 20 x 1000 parallel = 50 ohms, 20 x

DNM> 1/2 = 10 Watts. Matrix 4x5 for least lead length.

Re: KD8CEC V1.02 CW Frequency TX Adjust on LCD #ubitx

Ian Lee
 

masa

Thanks for your suggestion.
Your code work perfectly.

I have been able to set the CW frequency more easily since applying your code.

I added your code to CEC Firmware.
In CW Mode, fixed code is applied by default.
uBITX Manager was used to enable the previous frequency display method.

The modified source can be found at https://github.com/phdlee/ubitx.

Ian KD8CEC

//Load Configuration =======================================

  //Adjust CW Mode Freq
  shiftDisplayAdjustVal = (isShiftDisplayCWFreq & 0x3F) * 10;

  //check Minus
  if ((isShiftDisplayCWFreq & 0x40) == 0x40)
    shiftDisplayAdjustVal = shiftDisplayAdjustVal * -1;

 //Shift Display Check (Default : 0)
  if ((isShiftDisplayCWFreq & 0x80) == 0)  //Enabled
    isShiftDisplayCWFreq = 1;
  else    //Disabled
    isShiftDisplayCWFreq = 0;


//Applied Your code
    if (vfoActive == VFO_A) // VFO A is active
      strcat(c, "A:");
    else
      strcat(c, "B:");
  }

  //Fixed by Mitani Massaru (JE4SMQ)
  if (isShiftDisplayCWFreq == 1)
  {
    if (cwMode == 1)        //CWL
        tmpFreq = tmpFreq - sideTone + shiftDisplayAdjustVal;
    else if (cwMode == 2)   //CWU
        tmpFreq = tmpFreq + sideTone + shiftDisplayAdjustVal;
  }
  






2018-02-21 0:59 GMT+09:00 Mitani Masaru <mitani.masaru@...>:

ubitx KD8CEC Firmware (and others) Transmits on CW, LCD Frequency shifts Sidetone Frequency.
It fix patch for V1.02.

On ubitx_ui
 Set mode name(CWL/CWU) after Frequency plus(USB) or minus(LSB) to sidetone frequency.
100Hz shift needs  critical tune for my ubitx.
This modify goes  just LCD  Frequency Transmits on CW Oparation.
SSB mode is no change Frequency shift.

JE4SMQ masa





--
Best 73
KD8CEC / Ph.D ian lee
kd8cec@...
www.hamskey.com (my blog)

Re: rv2- messed up setting and txing like mad!!!

Alan -MMØWXT
 

Hi Jerry.
No effect on amps moving RV1.
100ma each on adjustment of RV1&2 whilst pressing PTT on mic
PA,Brown, supply 200 ma on PTT
12v,red, rail 250 in receive 550ma tx

A loud hallllow produces no change in current. Dont have swr so no idea of output to load.

But receive working and things are a beginning to click.

Thanks

Alan



Should i be seeing circa 1.8 amps on voice modulation and PTT? 13.8v psu

Re: More pins for the Raduino! An RF gain control for the uBITX!

Dexter N Muir
 

All above, plus ease of procurement: 20 x 1000 parallel = 50 ohms, 20 x 1/2 = 10 Watts. Matrix 4x5 for least lead length.

Re: RD16HHF1 in the uBITX #ubitx

Gordon Gibby <ggibby@...>
 

I found them for about $200 at did you key. The 300 W version was only $72. Those are pretty competitive prices to vacuum tubes!

On Feb 21, 2018, at 19:31, Michael Shreeve <@N6GRG> wrote:

MRFE6VP61K25H/HS

Re: RD16HHF1 in the uBITX #ubitx

Eric KE6US
 

You really have to squeeze! (hi). I sometimes pull the plunger back to draw a little air. It seems to come out a little easier after I do that. Maybe it breaks up a clog or something. It still often takes both thumbs on the plunger. You're squeezing hard, yet trying to stay on a tiny target.

One syringe will last the average person a LONG time. Maybe a year or more. Mayb e because it's so damn hard to squeeze it out. (hi) Keep it refrigerated when not in use.

Eric KE6US


On 2/21/2018 1:54 PM, Michael Hagen wrote:

He is not selling supplies anymore.

This is where he suggest getting supplies.  CML Supply.  They got lots of good stuff and the prices look good.

Have you bought a pound of solder lately!

I am still trying to get solder paste down without a mess.   I can't get it thru syringes so far.

Mike, WA6ISP


https://www.cmlsupply.com/kester-ep256-lead-solder-paste-63-37-syringe-dispenser/



On 2/21/2018 1:35 PM, Eric KE6US wrote:

Sorry. I got lazy.

http://kd5ssj.com/solderpaste/smt-tools-and-process

Very informative. I haven't tried the beverage warmer he talks about to preheat the board. Good idea, though. I usually just wave the heat gun around a foot or so above the board to warm it up., but the beverage warmer is a more positive step that encourages doing it right.

Some people use a toaster oven for reflow and have developed temperature profiles matching commercial production techniques. That's the right way to do it, and backed up by science, but bench work doesn't always require the same techniques that commercial production requires. I never bought anything from Sony that incorporated dead bug construction, but I'm sure their engineers and techs do initial proof of concept that way.

Fun call on CW. I like it.

Eric KE6US


On 2/21/2018 11:17 AM, K5ESS wrote:

Eric,

Couldn’t find your earlier link to “Cash’s video”.  Could you re-post.

Thanks

Mike

K5ESS

 

From: BITX20@groups.io [mailto:BITX20@groups.io] On Behalf Of Eric KE6US
Sent: Wednesday, February 21, 2018 12:07 PM
To: BITX20@groups.io
Subject: Re: [BITX20] RD16HHF1 in the uBITX

 

Looks fine. Mine is from Michael's rated at 360w. It was $20. WalMart might even be cheaper. They're probably all nearly identical. Mine looks like the one you show except for packaging details. BTW, it's super for heat shrink tubing too.

You control the heat with the distance from the piece. I start out about a foot away to get the board warmed up to a point where I don't want to touch it, Keep the end moving. Watch Cash's video that I link to earlier. It's really that easy.

Don't get too close to the part while the solder paste is still grey. There's a point where the solder paste starts getting a little glossy and slick. You can blow the part right off the pads if you get too aggressive. For that matter, I often tape smaller PCBs down as they can scoot around from the air flow too. Then it's magic. The solder turns silver, the part aligns itself right on the pads better than you did, and it's a thing of beauty.

On very tiny parts, say ones with 0.5 pitch pins, you can get solder bridges. Don't worry about them. A light touch with solder wick and a soldering iron and they disappear leaving the part perfectly soldered in place. On many tiny parts with lots of legs, I just lay down a running blob of solder that shorts all the pins together, then wick up the excess. I did about a dozen AD9850s that way. All perfect.

I understand some guys have tremors and other things that would make SMT difficult. It takes a steady hand to place the parts but not nerves of steel. I suspect anyone who can walk from the kitchen to their workbench with a full cup of coffee without spilling any could manage the larger SMTs without difficulty.

SMTs open up a whole new world of kit building and homebrew possibilities. They aren't limiting our abilities at all. We're doing that to ourselves.

Eric KE6US

 

On 2/20/2018 9:21 PM, VE7WQ wrote:

Thank you Eric,

 

What do you think about this heat gun on eBay?

110V 300W Hot Air Gun Hand Hold Mini Heat Gun for Embossing Heat Tool $10.76

https://tinyurl.com/y7vrbfvt

Or should I buy a $20 embossing tool (heat gun) from WalMart or any craft store ?

 

73! George

VE7WQ

 

Tuesday, February 20, 2018, among other things you wrote:

EK> A syringe, a small tweezer to place the parts, solder paste and a $20 

EK> embossing tool (heat gun) from WalMart or any craft store. It makes the 

EK> 20-QFN or any other SMT easy. 

 



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

Re: More pins for the Raduino! An RF gain control for the uBITX!

VE7WQ
 

Thank you Thomas,


will do, for sure. The local store got those in stock.


73! George

VE7WQ


Wednesday, February 21, 2018, you wrote:

TSvGI> Yep, but just for fun try nine 470 ohm resistors and one 1.2 K ohm

TSvGI> resistors in parallel. All should be 1 watt or better. 



Re: Variable power control

Thomas Sharka
 

What if you replaced the diodes with an LM317? Would that be as reliable?
 


Sent from Yahoo Mail. Get the app


On Wednesday, February 21, 2018 9:23 PM, LKNDAVE via Groups.Io <novatronix@...> wrote:


i did the hokie pokie and this jpg came out



Re: Variable power control

LKNDAVE
 

i did the hokie pokie and this jpg came out

Re: #ubitx Calibration resolution #ubitx

Jack, W8TEE
 

Was that section in the code what changed it?

Jack, W8TEE



From: Joel Caulkins <caulktel@...>
To: BITX20@groups.io
Sent: Wednesday, February 21, 2018 5:54 PM
Subject: Re: [BITX20] #ubitx Calibration resolution

I finally got my uBitx calibrated to my satisfaction but I still think there is room for some improvement there. Now waiting for my case to arrive and I can finish it up. So far very happy with it.

Joel
N6ALT


Re: More pins for the Raduino! An RF gain control for the uBITX!

Thomas Sharka
 

Yep, but just for fun try nine 470 ohm resistors and one 1.2 K ohm resistors in parallel. All should be 1 watt or better.
 


Sent from Yahoo Mail. Get the app


On Wednesday, February 21, 2018 8:31 PM, VE7WQ <v@...> wrote:


Thank you Thomas,

just to be sure, 
using 5 pieces a 250 Ohm 2W composite resistors in parallell,
will make a 50 Ohm 10W dummy load. Right?

73! George
VE7WQ

Wednesday, February 21, 2018, you wrote:
TSvGI> Use a multiple of 50 with and additive amount of watts. Put them in
TSvGI> parallel and you'll have 50 ohms at 10 watts.
TSvGI> Example: 5 times 50 = 250 ohms each, 5 times 2 watts each equals 10
TSvGI> watts.Example: 20 times 50 = 1000 ohms, 20 times 1/2 watt each equals 10 watts.
TSvGI> Kirchoff's Law is your friend. Also don't use wire wound resistors. They're inductive. 



Re: rv2- messed up setting and txing like mad!!!

Jerry Gaffke
 

When replacing that IRF510, I'd just clip the old one out leaving stubs 1/8 inch long,
and then solder the new one onto those stubs.
Avoids ripping up the board when removing the old pins. 
And very easy to replace the next time.   ;-)


On Wed, Feb 21, 2018 at 05:50 pm, <mm0wxt@...> wrote:
Hi Jerry and thanks again,appreciated.

Just taking this now in little steps. I will get back to you.

Re: Variable power control

LKNDAVE
 

my software, expresssch only puts out .bmp i will look at doing something about the quality asap.
sorry for the poor quality.
dave
no changes the i can think of to rv1

Re: rv2- messed up setting and txing like mad!!!

Alan -MMØWXT
 

Hi Jerry and thanks again,appreciated.

Just taking this now in little steps. I will get back to you.

Thanks

Alan

Re: More pins for the Raduino! An RF gain control for the uBITX!

Don, ND6T
 

Yes, the reciprocal of the sum of reciprocals. If you have them, just check with an ohm meter. Good to do that anyway, since they aren't always as marked. -Don

Re: More pins for the Raduino! An RF gain control for the uBITX!

VE7WQ
 

Thank you Don,


will watch that, your note is appreciated.


73! George

VE7WQ


Wednesday, February 21, 2018, you wrote:

DCvGI> Yes, what he (Thomas) said! But keep them close, no big runs. Unless you

DCvGI> are going to feed full CW into it for a long time, go for less power

DCvGI> dissipation.5 watts will do for 10 PEP SSB continuous. Even less needed

DCvGI> for shorter times. Best of all, experiment!

DCvGI> And thank you VERY much for the kind words! Best 73, Don

Re: More pins for the Raduino! An RF gain control for the uBITX!

VE7WQ
 

Thank you Thomas,


just to be sure, 

using 5 pieces a 250 Ohm 2W composite resistors in parallell,

will make a 50 Ohm 10W dummy load. Right?


73! George

VE7WQ


Wednesday, February 21, 2018, you wrote:

TSvGI> Use a multiple of 50 with and additive amount of watts. Put them in

TSvGI> parallel and you'll have 50 ohms at 10 watts.

TSvGI> Example: 5 times 50 = 250 ohms each, 5 times 2 watts each equals 10

TSvGI> watts.Example: 20 times 50 = 1000 ohms, 20 times 1/2 watt each equals 10 watts.

TSvGI> Kirchoff's Law is your friend. Also don't use wire wound resistors. They're inductive. 


Re: Raduino Replacemnt, COMING SOON!

Chuck Kelly
 

Hi Nik,
I looked on eBay, and couldn't find your replacement RaduinoI2C. I would like to order one quickly as I toasted mine for my UBitx. :-( 

When could I get one?

Thank you for the excellent work. 

73, Chuck Kelly W9MDO
Noblesville, IN 46060 USA

Re: My uBitx shipped today

Tom Christian
 

Sounds good, Gary!  I just need to carve out some free time soon to get er built.  Once I do, it would be great to set up a sched some evening on 80. Will check with ya then. Thanks!
Tom
AB7WT

Re: #ubitx Calibration resolution #ubitx

Ian Lee
 

Thanks for your suggestion.

uBITX Manager allows you to enter calibration values directly.
And now I have changed the BFO Calibration unit from 50Hz to 5Hz.
i will merge the source into the source today.

Ian KD8CEC

2018-02-21 2:46 GMT+09:00 Joel Caulkins <caulktel@...>:

Hi all,

My uBITX is just about perfect now running Ian Lee's 1.02 firmware except for one thing, calibration resolution. It seems that the calibration routine tunes in 50hz increments because if I set it at one number its too low in frequency by about 30-40Hz, if I go to the next number its too high by about the same amount, so I can't get it right on frequency. Ian did a major rewrite of the firmware but didn't touch the Calibration routine that Farhan wrote. If anybody knows how to get it calibrated right on frequency please let me know otherwise it may need to be addressed by those smarter than me.

Joel
N6ALT



--
Best 73
KD8CEC / Ph.D ian lee
kd8cec@...
www.hamskey.com (my blog)