That chip is on Bitx40, uBitx has TDA2822.
8 Ohms seems suitable for max output.
Raj
At 21-01-2018, you wrote:
toggle quoted message
Show quoted text
LM386 datasheet on page 7 says 4
to 32 ohms
???
I'd go with 8 ohms.
Generally speaking, a larger diameter speaker is more efficient than
smaller.
Bigger heavier magnets are better.
Differences between speakers can be quite drastic in both sound volume
and fidelity.
On Sun, Jan 21, 2018 at 12:23 am, <tommason56@...>
wrote:
- Hi. I'm new to these kits but before I get too involved with the
building is there a specific value of speaker (3.2/8 ohm) that performs
better.
- Any help greatly appreciated
|
Re: Reverse polarity diode circuit
So I have a relay that is controlled by the on-off switch to turn on power to the radio.? It has the diode in series with the switch that goes to the coil of the relay and takes 60 ma.? If the power is connected backwards, the relay will not energize when the switch is turned on. ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ ? Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois ? Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: Like us on Facebook! ? ? email:? bill@... ?
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From: [email protected] [mailto:[email protected]] On Behalf Of Steve Thatcher
Sent: Sunday, January 21, 2018 8:49 PM
To: [email protected]
Subject: Re: [BITX20] Reverse polarity diode circuit ? Hi gang.? I'm planning to install the diode in series with the V+ and then a fuse.? I only have a 1N5819 in hand.? I searched the data sheets for this compared to the 1N4002(7), and, even though I finished in the 50 percentile of my E101 class 5 years ago, hi hi, I can't tell if this will work.? Suggestions?? Thanks, Aloha, Steve WH6ST
|
Re: Rugged Case Options?
#ubitx
I also have one of those cases. ?They apparently have 9 different standard sizes but no listing on their web site of the sizes. You have to call.
BTW - These are the same folks that made the videos about using KiCad.
Seems like our kind of people.
They are located in Santa Clara, CA?
Dave WI6R Sent from my iPhone
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On Jan 19, 2018, at 1:21 PM, at91r40008 < yvon@...> wrote: Here it is Roy:
- #2090841
- Manufacturer: Context Engeineering
- UPC #802759260168
- Model #6016H-8.5B
-- And the link to their web site: 73, Yvon NU6I
|
Re: Release beta version of CAT support uBITX firmware.
#ubitx
Ian,?
The CW is almost perfect but occasionally (too often to use for a QSO) it still sends a dash instead of dot. It is random - very random. An “I” sent produces “N” or an “S” produces “R” are a couple of random examples. So it makes no difference where in the string it is.
Today I built W0EBs CW Keying Circuit, but this made absolutely no difference. ?So it appears the issue is elsewhere.?
I’m thinking of installing a pot in place of the 2.2K resistor in case we are just on an edge margin so it randomly sends the wrong character.
What do you think?
Dave WI6R Sent from my iPhone
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On Jan 9, 2018, at 10:29 AM, Ian Lee < kd8cec@...> wrote: For anyone who wants to make CAT communication in uBITX, post it.
After the first beta test, we now release the final test version.
You can restore it to the original firmware whenever you do not like my new firmware.
(Do not worry - uBITX original firmware is also posted on my blog)
When the beta test period is over, I will reload it with the stabilized version.
?
Below are the test results that I and beta testers
-In Ham radio deluxe, you can set basic settings such as CW speed side tone as well as frequency and mode change. You can conveniently set uBITX values using Ham radio deluxe.
If you use wsjtx, fldigi, jt65-hf etc., you can control the PTT control as well as the frequency by setting FT-817 as shown below.
In digital communications such as the FT-8 and JT65, if only USB is connected to the computer, software such as wsjtx will control the uBITX's frequency and PTT.
?
I also experimented with control on Windows, linux, and Raspberry pi.
?
Memory Keyer function is also built in.
I will post about the memory keyer implementation separately.
?
And most of the known bugs were fixed.
I have created dedicated software that supports this firmware 100%.
With this software, you can backup and restore various setting values of uBITX and manage the CW Text of the built-in memory keyer.
In addition, you have built-in tips to launch your Callsign at boot time.
For more information, download firmware and how to upgrade firmware, please use the link below.
Or if you need to hit the keyboard, just type and you can see it.?It 's the top post because I posted it right now.
Below is the final test video posted a week ago.
-- Best 73 KD8CEC / Ph.D Ian lee kd8cec@...
|
I figured it was time to invite all the new group members to plant a flag on?and remind everyone else the map is still alive and kicking.
As of my last check we are up to 272 entries.? Still no Antarctica!? As always, if you need help figuring out how to add yourself just ask.
Doug
AC9RZ
|
Re: BITX QSO Afternoon/Night, Sunday, January 21, 3PM/7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere
I'm giving up. Called and
called and nothing. Worked KG0BK, AA5TN for a while on 7278
which is
turning out to be a better frequency.
Ed W0OIC
On 1/21/2018 7:31 PM, N8DAH wrote:
toggle quoted message
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Well I have been
calling for about an hour nothing heard. I will go QRT and listen
for now.
--
David
?N8DAH
|
Re: Your Amazon.com order of 4x "Kimberly-Clark Procedure..." has shipped!
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On Sun, Jan 21, 2018 at 7:54 PM, JP JO <jaredmcg@...> wrote: Walt Ups tracking number is on this message. Someone could change delivery options and have it delivered somewhere else....just sayin'
The tracking shows as? 1ZV263450327176415
Sent by meOn Jan 21, 2018, at 8:46 PM, Vince Vielhaber < vev@...> wrote: Dunno what I woulda done without that info.? Thanks for passing that along!Vince.On 01/21/2018 08:40 PM, walt hodges wrote:
---------- Forwarded message ----------
From: ** <shipment-tracking@...
<mailto:shipment-tracking@amazon.com>>
Date: Sun, Jan 21, 2018 at 7:08 PM
Subject: Your order of 4x "Kimberly-Clark Procedure..." has
shipped!
To: walt.r.hodges@... <mailto:walt.r.hodges@gmail.com>
__
Hi Walter, your package is on the way! You can track it and check out
when your package will arrive.
? ? ?
<>
Hi Walter, your package will arrive:
Monday, January 22
Track package
<>
delivery ? ?
ON THE WAY
4 of: Kimberly-Clark Procedure...
Order #112-0400798-5402650
<>
|
Re: Your Amazon.com order of 4x "Kimberly-Clark Procedure..." has shipped!
Walt Ups tracking number is on this message. Someone could change delivery options and have it delivered somewhere else....just sayin'
The tracking shows as? 1ZV263450327176415
Sent by me
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On Jan 21, 2018, at 8:46 PM, Vince Vielhaber < vev@...> wrote: Dunno what I woulda done without that info. ?Thanks for passing that along!Vince.On 01/21/2018 08:40 PM, walt hodges wrote:
---------- Forwarded message ----------
From: ** <shipment-tracking@...
<mailto:shipment-tracking@...>>
Date: Sun, Jan 21, 2018 at 7:08 PM
Subject: Your order of 4x "Kimberly-Clark Procedure..." has
shipped!
To: walt.r.hodges@... <mailto:walt.r.hodges@...>
__
Hi Walter, your package is on the way! You can track it and check out
when your package will arrive.
? ? ?
<>
Hi Walter, your package will arrive:
Monday, January 22
Track package
<>
delivery ? ?
ON THE WAY
4 of: Kimberly-Clark Procedure...
Order #112-0400798-5402650
<>
|
Re: Your Amazon.com order of 4x "Kimberly-Clark Procedure..." has shipped!
Dunno what I woulda done without that info. Thanks for passing that along!
Vince.
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On 01/21/2018 08:40 PM, walt hodges wrote:
---------- Forwarded message ----------
From: *Amazon.com* <shipment-tracking@...
<mailto:shipment-tracking@...>>
Date: Sun, Jan 21, 2018 at 7:08 PM
Subject: Your Amazon.com order of 4x "Kimberly-Clark Procedure..." has
shipped!
To: walt.r.hodges@... <mailto:walt.r.hodges@...>
__
Hi Walter, your package is on the way! You can track it and check out
when your package will arrive.
Amazon.com
<>
Hi Walter, your package will arrive:
Monday, January 22
Track package
<>
delivery
ON THE WAY
4 of: Kimberly-Clark Procedure...
Order #112-0400798-5402650
<>
location
SHIP TO
Walt Hodges
1905 NW 159TH PL...
<>
price
SHIPMENT TOTAL
$46.88
<>
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Wolfgang Puck Coffee, Jamaican Me Crazy, K-Cups for Keurig Brewers,
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|
Your Amazon.com order of 4x "Kimberly-Clark Procedure..." has shipped!
---------- Forwarded message ---------- From: Amazon.com <shipment-tracking@...>Date: Sun, Jan 21, 2018 at 7:08 PM Subject: Your Amazon.com order of 4x "Kimberly-Clark Procedure..." has shipped! To: walt.r.hodges@...
Hi Walter, your package is on the way! You can track it and check out when your package will arrive.
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? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
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Re: #ubitx new Alternate software for the uBITX
#ubitx
Thanks. Keep an eye out, we are busy on more neat stuff if it works.
Jim
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On Jan 21, 2018, at 7:17 PM, Gordon Gibby <ggibby@...> wrote:
Jim Sheldon and Ron--- THANKS!! I grabbed that code for later perusal!!!!! Thanks!
gordon
________________________________________
From: [email protected] <[email protected]> on behalf of Jim Sheldon <w0eb@...>
Sent: Sunday, January 21, 2018 7:11 PM
To: [email protected]
Subject: [BITX20] #ubitx new Alternate software for the uBITX
Hi gang,
Ron, W2CTX and I (W0EB) have been steadily working on fixing some of the
CW problems with the uBITX software and also changing the tuning over
from the accelerated tuning for band change, etc. We found that this
method, while liked by some was difficult for some of us to tune to the
frequency we wanted so we set it up with a cursor under the digit to be
tuned using the encoder button to step the cursor position. We also
used the spare (A7) line as the dash input for the keyer (you have to
add another 4.7K pullup resistor, this time to the A7 input). The
zipfile complete with all files for compiling and uploading to the uBITX
with the Arduino IDE (version 1.8.5 or later on the IDE). If you have
your IDE set up right, it should compile without errors and upload to
the uBITX just fine.
The CW Keyer module uses code that came from the open source Ten-Tec
Patriot and Rebel code and the timing has been corrected so that the
paddles work properly and all the available speeds from real slooooow to
50 wpm. I've been using this code on the air for over a week without a
problem.
We also re-ordered the menu(s) and added a few items that are all
explained in the manual included in the zip file.
Ron and I sincerely hope this program version will allow you to work CW
much better and it addresses some of the requests for features that are
different from what was supplied in the initial version that came loaded
in the factory uBITX.
Jim Sheldon, W0EB for Ron, W2CTX and myself
|
Re: BITX QSO Afternoon/Night, Sunday, January 21, 3PM/7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere
Mostly just noise here.? Every now and then I could almost make out someone but not enough to even guess.? I was really looking forward to breaking in my new call sign.? Maybe next time.
Doug
AC9RZ
|
Re: #ubitx new Alternate software for the uBITX
#ubitx
Thanks. ?It was a concerted joint effort and we had fun and more than a few playful arguments in the process. ?Haven't met Ron in person, so I don't know how much hair he has left but mine has diminished even more. ?He's a much better programmer than I am but I'm getting there thanks to Jack, W8TEE's book. Other neat things are being worked on here and will be announced when/if we get them working.
Jim, W0EB?
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On Jan 21, 2018, at 7:24 PM, KD8CGH < rkayakr@...> wrote: Very nice!
Compiled and uploaded with no problems.
A straight key works well. I had already simply modded KD8CEC's code by removing the intermediate paddle value lines in getPaddle to get clean straight keying. Now I'll have to wire up A7 and try a paddle. I like the tuning and that your version offsets the frequency taking the sidetone into account.
Nice job on the documentation.
Now to add CAT and ....
THANKS!!!
? Bob?? KD8CGH
|
Re: BITX QSO Afternoon/Night, Sunday, January 21, 3PM/7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere
Well I have been calling for about an hour nothing heard. I will go QRT and listen for now. -- David
?N8DAH
|
Re: Reverse polarity diode circuit
There are two power supply pins going into the uBitx and BItx40. Put your 1A diode plus a 0.5A fuse in series on the wire that powers the main board and the Raduino. The main board and Raduino should work fine at 11v or less. Better yet, use a LM2940CT-12 voltage regulator to avoid excessive voltages into the main board. ? ?? /g/BITX20/message/39072No need for a diode on the power to the IRF510 drains, just a 3A fuse. If power to the IRF510's is reversed, the intrinsic diode in the IRF510 will conduct from source to drain and blow the fuse.? You probably don't want to suffer the voltage drop across a diode for the IRF510's anyway, as that would reduce your power out.
On Sun, Jan 21, 2018 at 04:49 pm, Steve Thatcher wrote:
Hi gang.? I'm planning to install the diode in series with the V+ and then a fuse.? I only have a 1N5819 in hand.? I searched the data sheets for this compared to the 1N4002(7), and, even though I finished in the 50 percentile of my E101 class 5 years ago, hi hi, I can't tell if this will work.? Suggestions?? Thanks, Aloha, Steve WH6ST
|
Re: #ubitx new Alternate software for the uBITX
#ubitx
Very nice!
Compiled and uploaded with no problems.
A straight key works well. I had already simply modded KD8CEC's code by removing the intermediate paddle value lines in getPaddle to get clean straight keying. Now I'll have to wire up A7 and try a paddle. I like the tuning and that your version offsets the frequency taking the sidetone into account.
Nice job on the documentation.
Now to add CAT and ....
THANKS!!!
? Bob?? KD8CGH
|
Dave
That does sound interesting.
|
Re: #ubitx new Alternate software for the uBITX
#ubitx
Jim Sheldon and Ron--- THANKS!! I grabbed that code for later perusal!!!!! Thanks! gordon ________________________________________ From: [email protected] < [email protected]> on behalf of Jim Sheldon <w0eb@...> Sent: Sunday, January 21, 2018 7:11 PM To: [email protected]Subject: [BITX20] #ubitx new Alternate software for the uBITX Hi gang, Ron, W2CTX and I (W0EB) have been steadily working on fixing some of the CW problems with the uBITX software and also changing the tuning over from the accelerated tuning for band change, etc. We found that this method, while liked by some was difficult for some of us to tune to the frequency we wanted so we set it up with a cursor under the digit to be tuned using the encoder button to step the cursor position. We also used the spare (A7) line as the dash input for the keyer (you have to add another 4.7K pullup resistor, this time to the A7 input). The zipfile complete with all files for compiling and uploading to the uBITX with the Arduino IDE (version 1.8.5 or later on the IDE). If you have your IDE set up right, it should compile without errors and upload to the uBITX just fine. The CW Keyer module uses code that came from the open source Ten-Tec Patriot and Rebel code and the timing has been corrected so that the paddles work properly and all the available speeds from real slooooow to 50 wpm. I've been using this code on the air for over a week without a problem. We also re-ordered the menu(s) and added a few items that are all explained in the manual included in the zip file. Ron and I sincerely hope this program version will allow you to work CW much better and it addresses some of the requests for features that are different from what was supplied in the initial version that came loaded in the factory uBITX. Jim Sheldon, W0EB for Ron, W2CTX and myself
|
Re: BITX QSO Afternoon/Night, Sunday, January 21, 3PM/7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere
On Sun, Jan 21, 2018 at 04:16 pm, David Eckhardt wrote:
Is 7277 becoming a 'BITX frequency'?
We've been using it for the Sunday night QSO parties for as long as I've been in the BitX community. I know a lot of the guys monitor the frequency when they are hanging out in the shack. ? -- John - WA2FZW
|
Re: Reverse polarity diode circuit
Steve, that diode will only pass 1 amp of current.? It will not work correctly if installed in series.? You would need something that will pass 3 or more? amps to work correctly.? Don't forget to take the diode voltage drop into account.
Marco - KG5PRT?
On Jan 21, 2018 6:49 PM, "Steve Thatcher" < stevep2p@...> wrote: Hi gang.? I'm planning to install the diode in series with the V+ and then a fuse.? I only have a 1N5819 in hand.? I searched the data sheets for this compared to the 1N4002(7), and, even though I finished in the 50 percentile of my E101 class 5 years ago, hi hi, I can't tell if this will work.? Suggestions?? Thanks, Aloha, Steve WH6ST
|
Raj vu2zap
K9HZ
Jim Sheldon
N8DAH
Bob Benedict, KD8CGH