Date   
Re: Mike element

Ken Held KF7DUR
 

Greg,
I ordered a few of the -24 dB mic elements from Mouser. I put one in a cheapo Baofeng speaker mic and it works great! The stock mics element was very weak the -24 dB element made a huge difference. Good find.

Ken
KF7DUR

Re: Mike element

Kevin Rea
 

HI Ken,

Would you happen to have the mouser part number for that element ?

 

Thanks,

Kevin rea

Lancaster, calif

K6rea

 

 

From: BITX20@groups.io <BITX20@groups.io> On Behalf Of Ken Held KF7DUR via Groups.Io
Sent: Sunday, July 22, 2018 8:39 AM
To: BITX20@groups.io
Subject: Re: [BITX20] Mike element

 

Greg,
I ordered a few of the -24 dB mic elements from Mouser. I put one in a cheapo Baofeng speaker mic and it works great! The stock mics element was very weak the -24 dB element made a huge difference. Good find.

Ken
KF7DUR

Re: surprising CW sidetone value in uBITX Manager 0.11 #ubitx

Tom, wb6b
 

It has been awhile (so I may not remember all the details) since I ran the uBITX manager, but I believe it did do checks for valid input. The display was split between a panel that showed the "raw" hex values in EEPROM and a panel with input boxes that that were labeled and operated with the human readable values you were adjusting. Also, Farhan adopted the EEPROM memory layout used by Ian, so that increased the cross compatibility between the CEC firmware and the subset of functionality in the factory firmware. 

I'm going to speculate on one thing, originally Ian assumed people would be upgrading from the factory firmware, so the EEPROM values in the factory subset would be programmed. As of late, more people are starting from Nanos that have never been programmed and installing the CEC software. I wonder if that is why some of the new issues are coming up. In any case I'm sure when he can, he will look into these. 

The Nextion displays are turning out to be quite a success for the CEC software, it looks like they solve many of the feedback, due to lack of screen space, issues. Maybe even lessen the need for the uBITX manager. Ian may be concentrating on that track for now. The Nextion displays seem to fall into some kind of sweet spot that makes it more accessible for other people to contribute to the project. 

Tom, wb6b

Re: Mike element

Arv Evans
 

Ken  KF7DUR

How weak were the stock elements you removed?  I'm assuming that you measured the
output on both the original and the new replacement units in order to have a good comparison.

Arv  K7HKL
_._


On Sun, Jul 22, 2018 at 9:39 AM Ken Held KF7DUR via Groups.Io <kf7dur=aol.com@groups.io> wrote:
Greg,
I ordered a few of the -24 dB mic elements from Mouser. I put one in a cheapo Baofeng speaker mic and it works great! The stock mics element was very weak the -24 dB element made a huge difference. Good find.

Ken
KF7DUR

Re: Source for female connectors/pins/manual crimp tool?

Robert Ogburn
 

To reposition wire/contact in berg/DuPont 2.54mm connectors so the colors are correct:

PCB Artwork hint

Robert Ogburn
 

for those new to PCB layout.  Thermal relief pads are very important as they enable good solder connections where otherwise the heat from the iron would be drawn-away by attached surrounding copper.

Re: PCB Artwork hint

Arv Evans
 

Even more important if the boards are to be commercially wave-soldered.
_._


On Sun, Jul 22, 2018 at 10:24 AM Robert Ogburn <ogburnrobert2@...> wrote:
for those new to PCB layout.  Thermal relief pads are very important as they enable good solder connections where otherwise the heat from the iron would be drawn-away by attached surrounding copper.

Re: Mike element

Ken Held KF7DUR
 

Kevin,

Mouser# 665-AOM-5024L-HD-R
Digi-Key# 668-1596-ND
MFG# AOM-5024L-HD-R

Ken

Re: Mike element

Ken Held KF7DUR
 

Art,

I didn't measure the output before replacing the element.
I compared it to a microphone from a GE commercial radio and it was much lower with the original, now the audio sounds very close.

Ken

Re: Mike element

Arv Evans
 

Ken

Thanks for the reply.  I was wondering if there was a generic problem with elements
used in the Baofeng microphones, or if yours was an anomaly?  May have to order
one just so I can test it.

Measuring the electret microphone output in typical BITX radio circuits seems to
indicate that most elements from on-line dealers put out around 45 millivolts as
measured with an oscilloscope.  Of course this will vary with circuit changes and
with different loading factors.

Arv


On Sun, Jul 22, 2018 at 11:09 AM Ken Held KF7DUR via Groups.Io <kf7dur=aol.com@groups.io> wrote:
Art,

I didn't measure the output before replacing the element.
I compared it to a microphone from a GE commercial radio and it was much lower with the original, now the audio sounds very close.

Ken

Re: uBitx Modulation only lows no highs in frequency response

jim
 



On Sunday, July 22, 2018, 6:20:06 AM PDT, RCC WB5YYM <curtis03@...> wrote:


With my radio/engineering skills very much lacking, I probably don't even need to be trying to contribute to this conversation,


Just a note ...

This is what the recieve passband looked like on my ubitx as recieved from the 'factory'

Jim

Re: Windows Serial Port Problem

James Kerns <jamesjkerns@...>
 

This same W10 update issue (honey, I lost my comm ports) happened to me twice (how dumb am I?).
Well the second time I was prepared and rolled back to the previous
version.Rolling back is my suggestion.  I also changed a W10 setting (somewhere) to never update
again. Now who's dumb? 

best, 73, j/KM4UFN


On Sat, Jul 21, 2018 at 8:21 AM, Jim Lommel <wd8rwi@...> wrote:
I was completely wrong about there being a download manager for Win 10.  Microsoft has changed to a service model from a subscription model and now you have no control over what updates get installed and what don't get installed other than not be connected to the internet.  My understanding it that this was done so all extant Win 10 installations are the same  instead of there being millions of different installations.

Does anyone else have information about how MS is 

On Tue, Jul 17, 2018 at 11:04 AM, Jim Lommel <wd8rwi@...> wrote:
I would guess that the install went badly.  I think that there is a program called Windows Update manager that you should look at and see ifit will allow you to uninstall the update.  I also think that there is a setting in th Update Manager that you can set to not automatically install updates.

73,

Jim
WD8RWI

On Sat, Jul 14, 2018 at 5:09 PM, Albert Woodhull <n1aw@...> wrote:
A few days ago my Windows 10 installation got updated, without asking me, of course.  I stepped away from the computer for a while and when
I came back updates were being installed.

I think my USB port drivers were changed.  When I try to run the KD8CEC Memory Manager or to upload a newly compiled  ubitx_20 version
I do not see the COM4 port any more. The Windows Device Manger shows an "Unusable Parallel Port (LPT3) where I previously saw a COM4
Serial Port.

Does anyone know what happened or how to undo it?

- Al N1AW






Receive pitch shifts when confirming.... #arduino #ubitx #ubitx-help

mtrager1@...
 

I am back troubleshooting my uBITx build and am still trying to get the receiver sounding normal.

I was able to use values that other had great success with and now I am at the point where I need to fine tune the pitch setting.

However when I go to confirm the pitch setting the pitch shifts back to where it was before or to another setting! Even when I connect the usb cable
to my computer I notice an eventual pitch change...

Can anyone help me please?

Thanks  73's Michael

Re: Receive pitch shifts when confirming.... #arduino #ubitx #ubitx-help

Ion Petroianu, VA3NOI
 

Hi Michael!
What firmware are you using?
In case you use Ian's firmware I will tell you what I have done to get my uBitX calibrated.
Please let me know and I will try to help.
73,
--
Ion

VA3NOI

Re: Receive pitch shifts when confirming.... #arduino #ubitx #ubitx-help

mtrager1@...
 

Hi Ion,

I am using the latest from KD8CEC 1.08.

I can get the receiver to sound ok until I try to save it!

Thank you,

Michael n2zdb

Re: Receive pitch shifts when confirming.... #arduino #ubitx #ubitx-help

Ralph Mowery
 

I thought I read somewhere after you get the frequency set you have to turn the ubitx off and then back on to save the settings.


On Sun, Jul 22, 2018 at 3:34 PM, <mtrager1@...> wrote:
Hi Ion,

I am using the latest from KD8CEC 1.08.

I can get the receiver to sound ok until I try to save it!

Thank you,

Michael n2zdb


Re: Receive pitch shifts when confirming.... #arduino #ubitx #ubitx-help

mtrager1@...
 

It says PTT to confirm.

I think the number is changing but not the pitch.

Re: Receive pitch shifts when confirming.... #arduino #ubitx #ubitx-help

mtrager1@...
 

I can change the vfo on the ubitx and it is 270Hz off.

K3 output on 28400000

UBitX             28400270 for natural pitch

Why does the pitch go back and forth when I try to save it?

Michael n2zdb

Re: Mike element

Kevin Rea
 

Thank you Ken.

 

kevin

 

From: BITX20@groups.io <BITX20@groups.io> On Behalf Of Ken Held KF7DUR via Groups.Io
Sent: Sunday, July 22, 2018 9:56 AM
To: BITX20@groups.io
Subject: Re: [BITX20] Mike element

 

Kevin,

Mouser# 665-AOM-5024L-HD-R
Digi-Key# 668-1596-ND
MFG# AOM-5024L-HD-R

Ken

[VK3 Event] Bring your Bitx/uBitx - Melbourne QRP by the Bay 28 July

Peter Parker
 

Every few months we have a QRP and homebrew gathering at Chelsea beach near Melbourne. 

The next is this Saturday, July 28, 3pm near the lifesaving club. 

This time we're having a "Bring your Bitx (or uBitx)" theme.  

So if you have a Bitx/uBitx or are curious about them it could be worth coming along if you're in the area. 

Facebook event page at https://www.facebook.com/events/1561847453926084/?notif_t=event_aggregate&notif_id=1532290431385991

73, Peter VK3YE