Date   
Digi-Key’s KiCAD library #kicad

Craig Wadsworth <cwadsworth@...>
 

This seemed worth sharing with the group.

https://www.digikey.com/en/resources/design-tools/kicad

Introducing Digi-Key's KiCad Symbol and Footprint Library and the KiCad EDA Tool

Re: Open letter to the uBITX community from Jim Sheldon, W0EB. #ubitx

Buddy Brannan
 

Everybody, take a drink.

I mean, this *is* a drinking game, right? Like, someone finally makes a political reference, take a drink? Something like that?

Hey Jim, I'm planning/scheming a possible Ubitx buy and construction so want to know about your hardware mods and such, as adding a keypad and TTS per KB1OIQ's files on the Facebook file are definite gotta haves, not to mention so so many other goodies on here :-)

Vy 73,

--
Buddy Brannan, KB5ELV - Erie, PA
Mobile (preferred): (814) 431-0962
Phone: (814) 860-3194
Email: buddy@...
"We are all just walking each other home."

On Apr 3, 2018, at 3:13 PM, Ken Hansen <ken@...> wrote:

Ugh.

This is an international mail group focused on discussion of a particular topic, not a place for political statements or jokes.

Thanks,

Ken, N2VIP

On Apr 3, 2018, at 1:57 PM, Lawrence Macionski via Groups.Io <am_fm_radio=yahoo.com@groups.io> wrote:

Jim- old Buddy and Friend-


Re: Open letter to the uBITX community from Jim Sheldon, W0EB. #ubitx

Ken Hansen
 

Ugh.

This is an international mail group focused on discussion of a particular topic, not a place for political statements or jokes.

Thanks,

Ken, N2VIP

On Apr 3, 2018, at 1:57 PM, Lawrence Macionski via Groups.Io <am_fm_radio=yahoo.com@groups.io> wrote:

Jim- old Buddy and Friend-

Re: Open letter to the uBITX community from Jim Sheldon, W0EB. #ubitx

Lawrence Macionski <am_fm_radio@...>
 

Jim- old Buddy and Friend-

I think Hilary will see the inside of a jail cell long before you..

Larry W8LM

Re: uBITX Low Power Output

N1EDC
 

Thanks for the info.  So it seems possible but unlikely the electret is the culprit?

What else could it be?  It seems likely whatever is causing our low current draw with the PA bias at 0 is related to our low power issue.  Are there any ICs I can check to see if they are getting enough power?  I'm no EE, but I could certainly poke around with a voltmeter if I knew where to look and what values are normal...

Re: Got Some Case Work Done #bitx20

Randy
 

The antenna panel mount and the switches (I believe) would be grounded.


Randy

Re: Got Some Case Work Done #bitx20

Daniel Conklin <danconklin2@...>
 

Looks great Randy! I think you mentioned that the face and back are isolated by plastic.  Did you find a way to electrically connect them?
Dan,
W2DLC

Got Some Case Work Done #bitx20

Randy
 

Thanks for all the help getting to this point.


Randy

Re: IDE 1.8.2 on MacBook Pro doesn't see a port to Raduino

Jerry Gaffke
 

Here's the old post from N0BHC:
    https://groups.io/g/BITX20/message/45633

The post says "you have to select "ATmega328P (OldBootloader)" 
Not having updated to the latest Arduino IDE, I have no idea if it really says "OldBootloader" in the Tools-Processor menu.

Jerry


On Tue, Apr 3, 2018 at 06:53 am, Jack Purdum wrote:
Someone posted here that the IDE made a minor change that rendered some of the Arduino boards "unloadable"...you could not get a sketch to upload to the Nano.

Re: uBITX Low Power Output

Arv Evans
 

Jacob  KE0GYC

Most of the good electret microphones are actually the cheap electrets that
are sold by name brand dealers.  Over the years that BITX has been around
it seems that most electret elements are pretty much the same.  There may
be slight differences in the built-in FET.  Comparison can be made by using
an oscilloscope or sensitive AC voltmeter to measure output. 

BITX designs seem to work best with 45 to 50 millivolts of audio input. 

Electret microphone capsules have wide frequency response, usually flat
from 20 Hz to over 20 KHz.  The case that they are installed in could have
Arv  K7HKL
_._


On Tue, Apr 3, 2018 at 5:21 AM, KE0GYC <dragonfanatic90@...> wrote:
It seems to be reading my other radio correctly with the same dummy load, so I suspect that is not it...

I am using a cheap Baofeng mic.  I drilled a hole over the electret to actually expose the mic, but I wonder if still it isn't giving enough gain...

Is there a performance difference between cheap and decent electrets?  Would it be worth replacing the capsule with the one that came with the uBitx, or are they all more or less the same?


Re: IDE 1.8.2 on MacBook Pro doesn't see a port to Raduino

Jack, W8TEE
 

I had this problem with 10 Nanos I recently purchased. Someone posted here that the IDE made a minor change that rendered some of the Arduino boards "unloadable"...you could not get a sketch to upload to the Nano. The fix was to select the Nano (Tools --> Boards), but to also set the processor (Tools --> Processor) to ATMega328P, the 'P' being the key. Then select the Port (Tools --> Port). I then tried to load the ASCII Table sketch (File --> Examples --> Coomunications --> Ascii Table). The first try failed, but the second always worked. I don't know why this is, but my guess is that the first attempt does something to "fix" the bootloader and the second attempt actually accepts the sketch.

Worth a try...

Jack, W8TEE


On Tuesday, April 3, 2018, 3:43:38 AM EDT, Mike Woods <mhwoods@...> wrote:


The Chinese driver works fine on my MacBook Pro 2016 ... with a variety of Chinese clone arduinos (Mega, nano, etc.)

Just saying!

Mike ZL1AXG

On Tue, 3 Apr 2018 at 4:53 PM, ab2ts <sciascia@...> wrote:
I have avoided arduinos with the CH340/CH341 chip set for that reason.  I have not found a reported reliable driver for the mac as of yet.  Unfortunately, most require an admin level system hack and/or cause a kernel panic.   I am not ready to experiment with these drivers yet.  They seem to change with every OS release.  the CH340 engineers are not on top of this.

I forgot to check the chip set in the Raduino when I bought it...  I may have to unsolder the provided Nano and replace it with one that uses the PL-2303 chip set.

Did you solve the problem?

Re: uBITX Low Power Output

Tim Gorman
 

I have tried any number of electret capsules over the years. There *is*
a difference in how they respond, some have high output and some don't.

The electret capsule that came with my ubitx has a very high output.

tim ab0wr

On Tue, 03 Apr 2018 04:21:51 -0700
"KE0GYC" <@N1EDC> wrote:

It seems to be reading my other radio correctly with the same dummy
load, so I suspect that is not it...

I am using a cheap Baofeng mic.  I drilled a hole over the electret
to actually expose the mic, but I wonder if still it isn't giving
enough gain...

Is there a performance difference between cheap and decent
electrets?  Would it be worth replacing the capsule with the one that
came with the uBitx, or are they all more or less the same?

Re: uBITX Low Power Output

N1EDC
 

It seems to be reading my other radio correctly with the same dummy load, so I suspect that is not it...

I am using a cheap Baofeng mic.  I drilled a hole over the electret to actually expose the mic, but I wonder if still it isn't giving enough gain...

Is there a performance difference between cheap and decent electrets?  Would it be worth replacing the capsule with the one that came with the uBitx, or are they all more or less the same?

Re: Open letter to the uBITX community from Jim Sheldon, W0EB. #ubitx

Thomas Sharka
 

Skunk oil is rendered skunk fat. It had many uses such as a liniment and a skin protectant. There really isn't much use for it nowadays as it's considered a folk remedy and very little proof has been gathered as to its medicinal properties. When rendered properly, skunk oil is about the thickness of motor oil. Why do I know this? Because my great-grandparents talked about it one day and satisfied my curious questions. They passed away in the early 90s at the ripe old age of 90 and change. They were together at the turn of the century in an arranged marriage and renewed their wedding vows at 70 years in the seventies.

Sorry for the OT, but sometimes this is what we talk about on the air as we socialize and discuss things.

73
 


Sent from Yahoo Mail. Get the app


On Tuesday, April 3, 2018 3:29 AM, Mike <msmith@...> wrote:


I like how the discussion went from "radio, software" to "skunk oil" . . . . hmmmm . . .  skunk oil . . . how well does it burn? Can it be used as fuel for a generator . . . to power my uBitX?


Re: IDE 1.8.2 on MacBook Pro doesn't see a port to Raduino

Mike Woods
 

The Chinese driver works fine on my MacBook Pro 2016 ... with a variety of Chinese clone arduinos (Mega, nano, etc.)

Just saying!

Mike ZL1AXG


On Tue, 3 Apr 2018 at 4:53 PM, ab2ts <sciascia@...> wrote:
I have avoided arduinos with the CH340/CH341 chip set for that reason.  I have not found a reported reliable driver for the mac as of yet.  Unfortunately, most require an admin level system hack and/or cause a kernel panic.   I am not ready to experiment with these drivers yet.  They seem to change with every OS release.  the CH340 engineers are not on top of this.

I forgot to check the chip set in the Raduino when I bought it...  I may have to unsolder the provided Nano and replace it with one that uses the PL-2303 chip set.

Did you solve the problem?

Re: Open letter to the uBITX community from Jim Sheldon, W0EB. #ubitx

Mike
 

I like how the discussion went from "radio, software" to "skunk oil" . . . . hmmmm . . .  skunk oil . . . how well does it burn? Can it be used as fuel for a generator . . . to power my uBitX?

Re: IDE 1.8.2 on MacBook Pro doesn't see a port to Raduino

ab2ts
 

I have avoided arduinos with the CH340/CH341 chip set for that reason.  I have not found a reported reliable driver for the mac as of yet.  Unfortunately, most require an admin level system hack and/or cause a kernel panic.   I am not ready to experiment with these drivers yet.  They seem to change with every OS release.  the CH340 engineers are not on top of this.

I forgot to check the chip set in the Raduino when I bought it...  I may have to unsolder the provided Nano and replace it with one that uses the PL-2303 chip set.

Did you solve the problem?

Re: BITX QSO Afternoon/Evening, Sunday, April 1, 3PM & 7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere.

John P
 

It even snowed here today! 
--
John - WA2FZW

Re: BITX QSO Afternoon/Evening, Sunday, April 1, 3PM & 7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere.

Tom VE3THR
 

Well John, I left green grass and + temps for a snow storm and - temps up north here...who wooda thunk??? She ain't over yet - snow again tomorrow!
Maybe next week or some eve...give me a call on 7.277 anytime.
73 Tom

Re: #ubitx Progressive 50dB+ Software based RX (and TX) IF attenuation. #ubitx

Jerry Gaffke
 

Could drive R104 where CW-KEY comes in with the wiper of a 10k pot,
the ends of that 10k pot go to CW-KEY and ground,
So when not keyed, pins 3,4 of the transformer are at ground.
When keyed, pins 3,4 maybe rise up to a quarter volt DC or so.
Adjust the pot for an appropriate power level when operating CW.

Though if you did over-drive the final with too big of a signal due to amplification
at Q20,21,22,  may not be the end of the world since for CW we don't care if the final is linear.

If you drove CW-KEY with a mike amp instead of a key, would have a modulator
somewhat like what's going on at T7.

The 0.1uF cap at C1 is a quick attempt at key shaping, once the pot gets adjusted for proper drive level 
then perhaps choose C1 for rise and fall times of the keying envelope of 5ms or less to avoid key clicks,
not terribly critical on a 10W rig.

Jerry, KE7ER



On Mon, Apr 2, 2018 at 03:05 pm, John wrote:

Then I am not sure what the gain of Q20-22 stage would do to the driving signal level. Maybe with sufficient shift in clock 1 to attenuate the signal, re-amplify in that Q20-22 stage and it could be of the right level?