Date   
Re: AGC circuit to try?

Nikos SV1IYF
 

Thanks Lawrence for the memories,

Your scan rung a long dormant bell (nostalgia face here). 
Do they come from the ARRL SSB handbook, where you scanned it from, or an original QST article sometime along 1965-1975?
Can't readily tell, but the pleasure doesn't change.

73 Nikos SV1IYF


HiOn 13/4/2018 11:41 μμ, Lawrence Galea wrote:

Ge evening Allison.
I mentioned it because of the two fets used in cascade at the front end and the use of agc.
It's design being nearly 50 years old is a totally different concept.
As you said the semiconductors are obsolete but one could use modern ones if they want to do so.
However, I have scanned the article which is hereto attached.
I scanned it at 600 dpi so I had to split it into three PDF files because of the 20 Mb attachment limit. 
Regards to all.
Lawrence

On Thu, Apr 12, 2018 at 2:48 PM, ajparent1 <kb1gmx@...> wrote:
ARRL Single Sideband for the Radio Amateur 1970 p193 et seq.
"An Engineer's Ham-Band Receiver"

I've duplicated the PLL for another radio and copied ideas for radios I have built.
They worked very well.

Three reasons its not a fit for uBITx......
One: the MOSFets used disappeared in the late 70s.
Two: Its a narrow band front end using varicap tuning, usually called a preselector. Lots of band coils.
Three: is it would require much switching to take it out of the transmit path.

Allison


KD8CEC 1.061 firmware functionality

Robert Goodwin
 

Rod, et al.,
     I am running the CEC FW v 1.061 and using Memory Manager v1.01 and I have several questions.
Features that seem to work well include:
a.  VFO A and B and their modes being set from Memory Manager and easily controllable from the function button of the uBITX
b.  Tuning steps being established by Memory Manager and changeable from the medium duration function button push of the uBITX
c.  The ability to establish, save and see bands in the uBITX that were defined in the Memory Manager.  That said. two things are not very clear in this area:
     c1:  What is the function of the 'Band Count' text box?  Is it necessary that it be filled in.
     c2.  I put the CB band frequencies in Band 10, but it does NOT appear on the uBITX list of bands under Band Select option of the function button.  All other specified bands do show up on the uBITX list of bands to be selected from.  Why?
d.  Under 'User Interface' of the Memory Manager, checking or unchecking the '1/2 Line Toggle' works to change the 1st/2nd line display on the uBITX.  'S Meter' and 'Always display Callsign' do NOT appear to have any effect on uBITX operations.  I have found some older references by Ian Lee that the 'S Meter' is pending but nothing to indicate whether the 'Always display Callsign' should or should not work.  Other features in this section not yet tested by me.
e. User Channel Configuration in Memory Manager does result in these options being available under the list of 'Channel to VFO' in the uBITX.  Very nice feature, especially for the 10 channels with the labels
f.  'WSPR - Configuration' in Memory Manager successfully results in at least one WSPR message option from the 'WSPR Beacon' option of the uBITX function button.

HOWVEVER, there as several things that either don't work, or which I have not yet cracked to code on how to make work.
1.  What is supposed to be stored in the 'Master', 'LSB', 'USB', and 'CWL/U' calibration text boxes of the Memory Manager?
2.  What is the purpose/function of the VFO A / VFO B Section.  There are text boxes for entering VFO A and B frequencies and Modes, but they do not appear to affect what is displayed on the uBITX, which boots up to the last values used when turned on.  Also, most text boxes for frequency entry on the Memory Manager specify whether data is to be entered in kHz or Hz, but these two VFO A and VFO B frequencies do not specify the units. How is this section supposed to be used?
3.  What is the function of the CW ADC Ranges in the Memory Manager?  What does ADC stand for and what are the units of the ranges?
4.  What is the function of the Memory Key section?  Is it functional?  I am particularly interested in the purpose of the 'Tune TX Type' which appears to attempt to define receiving and transmitting behavior, in and/or out of ham bands? 
5.  In the 'Band Count' area of Memory Manager,
     5a.  what is the function of the 'Auto Integration' buttons for 1, 2, & 3.  Are these defining the legal ham bands for different regions of the world?
     5b.  what is the purpose of the 'Band Count' in Memory Manager and how does it affect the Band options shown when using the Band Select option of the uBITX function button.
6.  What is the function / effect of putting values in the 'Saved Band Freq' section of the Memory Manager?  What does it affect in the operation of the uBITX?
7.  What is not yet functional in the 'User Interface' section of the Memory Manager in terms of having any effect on uBITX functionality?
8.  In the WSPR Configuration section of the Memory Manager,
     8a.  The X-TAL text box shows 25,000,000 (without the commas I've typed in for clarity).  Does this ever need to be changed?  If so, to what?  How determine X-TAL value?
     8b.  Like all other 'Calibration' values in the Memory Manager this one shows '0' but has guidance to 'Correct the calibration value according to the WSPR result  ex) 147000,  145000'.  What does this guidance mean?  What is a WSPR result and where is this value provided?

I love these features but feel confused and unsure of myself in the absence of answers to the above questions.

Respectfully,
Bob Goodwin , N4HCI



Best Basswood BITX Box Board Placement?

Bill Meara
 

Re: VE1BWV audio pop fix - lost my sidetone

K4LXY
 

The fix for the missing sidetone turned out to be very simple - a .1 (104) cap in series with R253 to block DC.
Howard

Re: KD8CEC 1.061 firmware functionality

Rod Davis
 

Bob,

Thank you for the feedback.

I am starting to write a Memory Manager guide, and this is valuable feedback for that process.

Currently I do not have the answers. I will collaborate with Ian, and hope to resolve these questions
in a timely manner.

Best Regards,

Rod KM6SN

cc: Ian KD8CEC


On 04/14/2018 05:03 AM, Robert Goodwin wrote:
Rod, et al.,
     I am running the CEC FW v 1.061 and using Memory Manager v1.01 and I have several questions.
Features that seem to work well include:
a.  VFO A and B and their modes being set from Memory Manager and easily controllable from the function button of the uBITX
b.  Tuning steps being established by Memory Manager and changeable from the medium duration function button push of the uBITX
c.  The ability to establish, save and see bands in the uBITX that were defined in the Memory Manager.  That said. two things are not very clear in this area:
     c1:  What is the function of the 'Band Count' text box?  Is it necessary that it be filled in.
     c2.  I put the CB band frequencies in Band 10, but it does NOT appear on the uBITX list of bands under Band Select option of the function button.  All other specified bands do show up on the uBITX list of bands to be selected from.  Why?
d.  Under 'User Interface' of the Memory Manager, checking or unchecking the '1/2 Line Toggle' works to change the 1st/2nd line display on the uBITX.  'S Meter' and 'Always display Callsign' do NOT appear to have any effect on uBITX operations.  I have found some older references by Ian Lee that the 'S Meter' is pending but nothing to indicate whether the 'Always display Callsign' should or should not work.  Other features in this section not yet tested by me.
e. User Channel Configuration in Memory Manager does result in these options being available under the list of 'Channel to VFO' in the uBITX.  Very nice feature, especially for the 10 channels with the labels
f.  'WSPR - Configuration' in Memory Manager successfully results in at least one WSPR message option from the 'WSPR Beacon' option of the uBITX function button.

HOWVEVER, there as several things that either don't work, or which I have not yet cracked to code on how to make work.
1.  What is supposed to be stored in the 'Master', 'LSB', 'USB', and 'CWL/U' calibration text boxes of the Memory Manager?
2.  What is the purpose/function of the VFO A / VFO B Section.  There are text boxes for entering VFO A and B frequencies and Modes, but they do not appear to affect what is displayed on the uBITX, which boots up to the last values used when turned on.  Also, most text boxes for frequency entry on the Memory Manager specify whether data is to be entered in kHz or Hz, but these two VFO A and VFO B frequencies do not specify the units. How is this section supposed to be used?
3.  What is the function of the CW ADC Ranges in the Memory Manager?  What does ADC stand for and what are the units of the ranges?
4.  What is the function of the Memory Key section?  Is it functional?  I am particularly interested in the purpose of the 'Tune TX Type' which appears to attempt to define receiving and transmitting behavior, in and/or out of ham bands? 
5.  In the 'Band Count' area of Memory Manager,
     5a.  what is the function of the 'Auto Integration' buttons for 1, 2, & 3.  Are these defining the legal ham bands for different regions of the world?
     5b.  what is the purpose of the 'Band Count' in Memory Manager and how does it affect the Band options shown when using the Band Select option of the uBITX function button.
6.  What is the function / effect of putting values in the 'Saved Band Freq' section of the Memory Manager?  What does it affect in the operation of the uBITX?
7.  What is not yet functional in the 'User Interface' section of the Memory Manager in terms of having any effect on uBITX functionality?
8.  In the WSPR Configuration section of the Memory Manager,
     8a.  The X-TAL text box shows 25,000,000 (without the commas I've typed in for clarity).  Does this ever need to be changed?  If so, to what?  How determine X-TAL value?
     8b.  Like all other 'Calibration' values in the Memory Manager this one shows '0' but has guidance to 'Correct the calibration value according to the WSPR result  ex) 147000,  145000'.  What does this guidance mean?  What is a WSPR result and where is this value provided?

I love these features but feel confused and unsure of myself in the absence of answers to the above questions.

Respectfully,
Bob Goodwin , N4HCI




Re: Best Basswood BITX Box Board Placement?

Doug W
 

William's wizardly wood workmanship warrants warm well-wishing.

Re: AGC circuit to try?

Lawrence Galea
 

1970 SSB Handbook
Regards
Lawrence

On Sat, Apr 14, 2018 at 1:31 PM, MAuVE111 <info.mauve@...> wrote:
Thanks Lawrence for the memories,

Your scan rung a long dormant bell (nostalgia face here). 
Do they come from the ARRL SSB handbook, where you scanned it from, or an original QST article sometime along 1965-1975?
Can't readily tell, but the pleasure doesn't change.

73 Nikos SV1IYF


HiOn 13/4/2018 11:41 μμ, Lawrence Galea wrote:
Ge evening Allison.
I mentioned it because of the two fets used in cascade at the front end and the use of agc.
It's design being nearly 50 years old is a totally different concept.
As you said the semiconductors are obsolete but one could use modern ones if they want to do so.
However, I have scanned the article which is hereto attached.
I scanned it at 600 dpi so I had to split it into three PDF files because of the 20 Mb attachment limit. 
Regards to all.
Lawrence

On Thu, Apr 12, 2018 at 2:48 PM, ajparent1 <kb1gmx@...> wrote:
ARRL Single Sideband for the Radio Amateur 1970 p193 et seq.
"An Engineer's Ham-Band Receiver"

I've duplicated the PLL for another radio and copied ideas for radios I have built.
They worked very well.

Three reasons its not a fit for uBITx......
One: the MOSFets used disappeared in the late 70s.
Two: Its a narrow band front end using varicap tuning, usually called a preselector. Lots of band coils.
Three: is it would require much switching to take it out of the transmit path.

Allison



Re: RadioKits.in Case #ubitx

chris gress <Chrisg0wfh@...>
 

I just ordered a red case they are taking orders again chris G0WFH


On Sun, 8 Apr 2018, 15:52 KM4TRT via Groups.Io, <garello=aol.com@groups.io> wrote:

but I believe the demand has been such that they're on hold until April 15.
Some, or all, might be 'out of stock' for now.

Mike Yancey, KM5Z
Dallas, Texas, USA

Mike, I just got an email from amateur radio kits that they are shipping in about a week.
Andy KM4TRT

Re: VK4PLN's Radrino replacement boards

Leland Lannoye
 

Nick:

What is the cost of this board.  I have a Micro BitX encased in a Carl Beck composite case (which I will add shielding to while I redo it.  Will this board add new features?  I would like a blue display and the ability to set the brightness down.

Please advise.

Lee, WA9AOE

Bill:

This is the board I was referring to.


On 04/13/18 19:33, Nick VK4PLN wrote:
PDF Version

Re: Best Basswood BITX Box Board Placement?

ajparent1/KB1GMX
 

I'e used several obtained from the local Craft stores.  They are cheap and I can get them
large enough to not only contain the transceiver but also a reasonable sized battery, key, Mic,
and manual antenna tuner.  Station in a box.  The latest is getting the "steampunk" look
for the outside (dark stain, metal corners).

The beauty is common hand tools are sufficient as wood is far less difficult to work with
then metal.

The right box depends on what you desire.

Allison

Re: VK4PLN's Radrino replacement boards

K9HZ <bill@...>
 

Oh yes, I have some of those and they are compatible.

 

 

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: www.VillaGrandPiton.com

Like us on Facebook! facebook icon

 

Moderator – North American QRO Group at Groups.IO.

 

email:  bill@...

 

 

From: BITX20@groups.io [mailto:BITX20@groups.io] On Behalf Of Leland Lannoye
Sent: Saturday, April 14, 2018 11:28 AM
To: BITX20@groups.io; William Schmidt, K9HZ <bill@...>
Subject: Re: [BITX20] VK4PLN's Radrino replacement boards

 

Nick:

What is the cost of this board.  I have a Micro BitX encased in a Carl Beck composite case (which I will add shielding to while I redo it.  Will this board add new features?  I would like a blue display and the ability to set the brightness down.

Please advise.

Lee, WA9AOE

Bill:

This is the board I was referring to.

 

On 04/13/18 19:33, Nick VK4PLN wrote:

PDF Version

 


Virus-free. www.avg.com

Re: TDA2822 fried

Bill KC5SB
 

The first was the WX chip.  However, I may have caused the problems by plugging a mono jack into the phones jack.  I am careful now, and so far no more problems. The replacements I bought have TDA2822M on the first line and ST 2KJ07 on the second line.  Bought 5 on eBay with sockets for $9.98 free shipping.

KB1OIQ: uBITX for visually impaired ham radio operators

kb1oiq@...
 

Hi Everybody,

I've made many modifications to my uBITX to make it accessible to visually impaired ham radio operators.  I've also "field tested" the breadboarded prototype with a local ham radio operator who is blind, and I received great feedback from him.  The main differences are the addition of a keypad and a voice synthesis module, plus major refactoring and modification of the original sketch from VU2ESE.

I documented everything with the intention that others could easily reproduce this variation of the uBITX.  It is my hope that folks will take this work and build one for a local ham who is blind. 

The hardware modifications, my heavily modified Arduino sketch, plus photos, videos, and a user's guide, can all be found on Sourceforge:
https://sourceforge.net/projects/kb1oiq-ham-radio-projects/files/ubitx/

The software is done, unless bugs are found.  There are only about 400 bytes of program memory available.

My next step is to mount this into a "real" enclosure.  I'm just starting to build enclosure mock-ups.

I'm also evaluating existing circuits for "speaker pop" and AGC, and better heat sinking of the IRF510s.

I'm interested in hearing from anybody who attempts to build this variation of the uBITX.

Enjoy!

73 de Andy
KB1OIQ

Re: KB1OIQ: uBITX for visually impaired ham radio operators

walt hodges
 

Congratulations on your efforts.

73 de walt

On Sat, Apr 14, 2018 at 1:41 PM, <kb1oiq@...> wrote:

Hi Everybody,

I've made many modifications to my uBITX to make it accessible to visually impaired ham radio operators.  I've also "field tested" the breadboarded prototype with a local ham radio operator who is blind, and I received great feedback from him.  The main differences are the addition of a keypad and a voice synthesis module, plus major refactoring and modification of the original sketch from VU2ESE.

I documented everything with the intention that others could easily reproduce this variation of the uBITX.  It is my hope that folks will take this work and build one for a local ham who is blind. 

The hardware modifications, my heavily modified Arduino sketch, plus photos, videos, and a user's guide, can all be found on Sourceforge:
https://sourceforge.net/projects/kb1oiq-ham-radio-projects/files/ubitx/

The software is done, unless bugs are found.  There are only about 400 bytes of program memory available.

My next step is to mount this into a "real" enclosure.  I'm just starting to build enclosure mock-ups.

I'm also evaluating existing circuits for "speaker pop" and AGC, and better heat sinking of the IRF510s.

I'm interested in hearing from anybody who attempts to build this variation of the uBITX.

Enjoy!

73 de Andy
KB1OIQ


Re: KB1OIQ: uBITX for visually impaired ham radio operators

kb1oiq@...
 

Thank you, sir!

73,

Andy
KB1OIQ

Re: KB1OIQ: uBITX for visually impaired ham radio operators

Leland Lannoye
 

I have serious visual issues such as color blindness and limited depth perception.  I am not visually blind, although I am only about 50 points above legal blindness in my left eye (20/150).  I would be very happy to promote and spread this Ubitx and get it in the hands of a few friends of mine who ARE totally blind.

Lee, WA9AOE


On 04/14/18 14:41, kb1oiq@... wrote:

Hi Everybody,

I've made many modifications to my uBITX to make it accessible to visually impaired ham radio operators.  I've also "field tested" the breadboarded prototype with a local ham radio operator who is blind, and I received great feedback from him.  The main differences are the addition of a keypad and a voice synthesis module, plus major refactoring and modification of the original sketch from VU2ESE.

I documented everything with the intention that others could easily reproduce this variation of the uBITX.  It is my hope that folks will take this work and build one for a local ham who is blind. 

The hardware modifications, my heavily modified Arduino sketch, plus photos, videos, and a user's guide, can all be found on Sourceforge:
https://sourceforge.net/projects/kb1oiq-ham-radio-projects/files/ubitx/

The software is done, unless bugs are found.  There are only about 400 bytes of program memory available.

My next step is to mount this into a "real" enclosure.  I'm just starting to build enclosure mock-ups.

I'm also evaluating existing circuits for "speaker pop" and AGC, and better heat sinking of the IRF510s.

I'm interested in hearing from anybody who attempts to build this variation of the uBITX.

Enjoy!

73 de Andy
KB1OIQ


#ubitx-help Getting WSJT-X running on the Pi3 #ubitx-help

Vince Loschiavo
 

Sort of off topic, but trying to keep up with Dr. Ian LEE on interfacing the uBitx with the Raspberry Pi 3.
all good so far, can run FLDIGI and have CAT Control of the uBitx with the Pi.
what i'm having difficulties with is
the  type 'sudo apt-key adv –keyserver keyserver.ubuntu.com –recv-keys 862549F9'
command.  
not able to get there from here.
any suggestions? getting a gpg: WARNING: no command supplied.

Re: #ubitx-help Getting WSJT-X running on the Pi3 #ubitx-help

Vince Loschiavo
 

i do have the early version on the pi, v1/1 r3496, but having faults at startup for audio input stream (using audio dongle)
v

Re: #ubitx-help Getting WSJT-X running on the Pi3 #ubitx-help

Rob Snow
 

I think I just grabbed the .deb from the WSJT website and did a "sudo apt install ./wsjtx-1.9.0_rc3.deb" and it installed.

Newbie questions...

Gerry Hull
 

Hey All,

Not a new ham (45 years in the game), but a new uBitX buyer.
I just ordered on Friday the 13th.  Other than my palpal receipt, should I expect anything about shipping confirmation?  No other emails received.

I'm a software guy, so some interest in tweaking the firmware.   I know that there has been some CAT stuff done with the FT-817 Protocol.  I happen to do a lot of remote operation and have an Elecraft K3/0 -- the full-size K3 with no RF in it.   It's just a nice front panel with RS-232 that you connect to a remote K3.  It would be great to implement the K3 protocol, so I could use the front panel.   I could use Digital potentiometers for the pots on the board.   I could even mount the uBitx inside the K3/0.

Looking forward to experimentation and lots of QSOs.

73,

Gerry W1VE / VE1RM / VY1AAA