Date   
uBITX - Aligning the master clock

Elliott J Olson
 

The instructions say to tune to a known broadcast station to
calibrate the clock. (How far off can the clock be from the factory?)
What is the minimum frequency receivable with the factory firmware? I
can't seem to get it below 1000KHz (tuning gets really erratic
somewhere below 2000KHz, going down enough it skips way up in
displayed frequency). Our local station is 1410 transmitting from
35 miles away, so it should be usable.

Not having any outdoor antenna yet, I'm trying some indoor solutions.
Attaching a 3' wire, I get a rise in the receiver noise, no signals
received yet of course. Connecting the other end of that wire to an
old AN-29-C telescoping military whip (at least 10') laying horizontal
jumps the noise even more. Should I be concerned that I am still not
hearing the local station (just receivable on another radio with
ferrite rod antenna) or do I still need to string up an outdoor wire?
(No steel in the walls to shield signals under the ground-bonded steel
roof like in my uncle's stucco house.)


--
Best regards,
Elliott mailto:@n0ukf

Re: KB1OIQ: uBITX for visually impaired ham radio operators

MVS Sarma
 

Congrats Andy, It is a genuined need and appreciate your sincere effort.

Like wise i also look forward for other differently abled persons' needs.
 Hopw sooner some one would come up for others too.
regards
sarma
 vu3zmv

Regards
MVS Sarma
 

On Sun, Apr 15, 2018 at 12:11 AM, <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

Buddy Brannan
 

Hi Andy,

I, too, am interested, as we discussed briefly on Facebook. Will be following with interest, especially as you find useful/effective mods and such.

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 14, 2018, at 2:41 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: KD8CEC 1.061 firmware functionality

Ian Lee
 

Bob. Rod
I am always thanking Rod.

 c1:  What is the function of the 'Band Count' text box?  Is it necessary that it be filled in.
  Even if you enter a lot of values in the Band List, uBITX uses only the number that is input in Band Count.
  If Band Count is 5 even though 1 ~ 10 are input, only 1 ~ 5 will be used.
  This is because the number of ham bands allowed by country is different.  

 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?
  If Band Count is set to 10, it should appear normally. The change of the Ham band is loaded normally when uBITX is rebooted.

 If it does not work, send me your uBITX backup file. I'll review it.
 Your uBITX configuration backup can be saved as a file using the backup function of uBITX Manager.


 'Always display Callsign' should or should not work. 
  I will implement S.Meter related work in this beta version.
  Perhaps S.Meter will only work if you check the use of S.Meter.
  I'm worried about where to put S.Meter on the 16x02 LCD.


1.  What is supposed to be stored in the 'Master', 'LSB', 'USB', and 'CWL/U' calibration text boxes of the Memory Manager?
Never modify this place without backup.

Your uBITX have been perfectly tuned when shipped from the factory.
This is where Calibration of the radio is concerned. This place is quite sensitive.
Use the backup function of uBITX Manager to backup your uBITX file and modify the calibration.
Find other articles about Calibration.



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?
It only shows the value stored in memory to the user. Modifying this will not have a significant impact on uBITX.
You do not need to enter a value here.


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?

I posted about this part in my blog with photos and videos. 




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?  


The memory keyer that automatically transfers CW is implemented in uBITX by software.
This will be useful for CW communication.
Some users use this function as a CW Reverse beacon.
'Tune TX Type' is for countries that prohibit the use of frequencies other than 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.
5a: correct
     
The user will have difficulty entering all the band areas.
So I put the band region for Region 1, 2, and 3 on the uBITX Manager.
When you press the '1' button, your uBITX sets the default band for Region 1.
The same is true for '2' and '3'.

5b : I wrote the answer above.


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?


Users do not need to enter here either.
Whenever you change bands in uBITX, uBITX stores the frequency you are using by band.
(Like common commercial radios)


7.  What is not yet functional in the 'User Interface' section of the Memory Manager in terms of having any effect on uBITX functionality?

Probably only S.Meter.
S.Meter is also supported by 1.08 (version after this beta version).


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?

8a : That's a really good question.
  You do not need to change anything.
But if you changed uBITX or made DIY, if you changed SI5351 control to 27Mhz, you need to change it to 27000000.
Users who use 27Mhz have already received feedback that WSPR was successful.

In other words, you do not need to modify uBITX if you purchased it through HFSignal.

8b : WSPR uses a frequency variation of 1.46 Hz to transmit the signal.
WSPR requires relatively accurate calibration. 
uBITX is fully calibrated when shipped from the factory. So when you transmit WSPR, you will generate the frequency by using Master Calbration value as it is.
However, if you want to create a WSPR with a slightly different calibration value than the Master Calibration value, you can modify this part slightly.
This does not affect uBITX Calibration. Used for sending WSPR messages only.

If your uBITX's calibration is normal, you do not need to modify this part.


Ian KD8CEC

2018-04-14 21:03 GMT+09:00 Robert Goodwin <bobgn1@...>:

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

n6dt vswr mod -7 volts reflected 0.68 fwd???

Alan -MMØWXT
 

Hi I built a N6dt vswr circuitc and I have no idea what I have done but I am getting -7.8v(to high for raduino) on reflected pad and 0.68v on forward pad.

Thanks
Alan
--
MMØWXT
GQRP - #15057

Re: Newbie questions...

K5ESS
 

As mentioned you get an email from Paypal when it ships.  I had mine shipped DHL and got a phone call from them the day before my Paypal notification of shipment.  Haven’t heard anyone else say they got a phone call from DHL.  Maybe I’m just special ;-)

Mike

K5ESS

 

From: BITX20@groups.io [mailto:BITX20@groups.io] On Behalf Of Gerry Hull
Sent: Saturday, April 14, 2018 3:56 PM
To: BITX20@groups.io
Subject: [BITX20] Newbie questions...

 

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

 

 

Re: Newbie questions...

Gerry Hull
 

Thanks Bill.  I’ll keep that in mind.


On Sat, Apr 14, 2018 at 8:01 PM K9HZ <bill@...> wrote:

I think where Allison was going is that these electronic pots usually have a bandwidth that falls in the 10Hz-500KHz plus or minus so they will be limited to use in the audio section.  There may be some good reasons to use them in the audio chains though where you can create presets for different band-modes.  That could be slick.  As for things like drive level… no go.  There are some video range digital pots that might work there, but then can be very pricy.  For simple controllable voltage ranges… of course a simple Op amp amplifier off an analog pin of the Arduino is more than adequate.

 

 

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 Gerry Hull
Sent: Saturday, April 14, 2018 6:52 PM
To: BITX20@groups.io
Subject: Re: [BITX20] Newbie questions...

 

Thanks.  Yes, I realize the digital pot work..  should not be too hard and the parts are cheap.

 

On Sat, Apr 14, 2018 at 7:47 PM ajparent1/KB1GMX <kb1gmx@...> wrote:

>>  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. 

Using the K3 digital pots means the uBitx would have to have the mechanical pots replaced with digital driven ICs.  That would
be limited to mic gain and rx audio gain.  Doable but not trivial.  Same for other features that require hardware not implemented
in the ubitx.  However if the Radiono controls it you can implement a protocol to do it from whatever hardware you want to use.



>> I could even mount the uBitx inside the K3/0.<<

Space permitting, you may need more power too.

12v power is external.  I have some 2 and 432 to 10m transverters I could throw I;as well


You may look at Andy's, KB1OIQ work for ideas not mentioned here.

Excellent.

 

Gerry.


Allison

 


Virus-free. www.avg.com

Re: Newbie questions...

K9HZ <bill@...>
 

I think where Allison was going is that these electronic pots usually have a bandwidth that falls in the 10Hz-500KHz plus or minus so they will be limited to use in the audio section.  There may be some good reasons to use them in the audio chains though where you can create presets for different band-modes.  That could be slick.  As for things like drive level… no go.  There are some video range digital pots that might work there, but then can be very pricy.  For simple controllable voltage ranges… of course a simple Op amp amplifier off an analog pin of the Arduino is more than adequate.

 

 

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 Gerry Hull
Sent: Saturday, April 14, 2018 6:52 PM
To: BITX20@groups.io
Subject: Re: [BITX20] Newbie questions...

 

Thanks.  Yes, I realize the digital pot work..  should not be too hard and the parts are cheap.

 

On Sat, Apr 14, 2018 at 7:47 PM ajparent1/KB1GMX <kb1gmx@...> wrote:

>>  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. 

Using the K3 digital pots means the uBitx would have to have the mechanical pots replaced with digital driven ICs.  That would
be limited to mic gain and rx audio gain.  Doable but not trivial.  Same for other features that require hardware not implemented
in the ubitx.  However if the Radiono controls it you can implement a protocol to do it from whatever hardware you want to use.



>> I could even mount the uBitx inside the K3/0.<<

Space permitting, you may need more power too.

12v power is external.  I have some 2 and 432 to 10m transverters I could throw I;as well


You may look at Andy's, KB1OIQ work for ideas not mentioned here.

Excellent.

 

Gerry.


Allison

 


Virus-free. www.avg.com

Re: Newbie questions...

Gerry Hull
 

Thanks.  Yes, I realize the digital pot work..  should not be too hard and the parts are cheap.

On Sat, Apr 14, 2018 at 7:47 PM ajparent1/KB1GMX <kb1gmx@...> wrote:
>>  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. 

Using the K3 digital pots means the uBitx would have to have the mechanical pots replaced with digital driven ICs.  That would
be limited to mic gain and rx audio gain.  Doable but not trivial.  Same for other features that require hardware not implemented
in the ubitx.  However if the Radiono controls it you can implement a protocol to do it from whatever hardware you want to use.


>> I could even mount the uBitx inside the K3/0.<<

Space permitting, you may need more power too.
12v power is external.  I have some 2 and 432 to 10m transverters I could throw I;as well

You may look at Andy's, KB1OIQ work for ideas not mentioned here.
Excellent.

Gerry.

Allison
 

Re: Newbie questions...

ajparent1/kb1gmx
 

>>  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. 

Using the K3 digital pots means the uBitx would have to have the mechanical pots replaced with digital driven ICs.  That would
be limited to mic gain and rx audio gain.  Doable but not trivial.  Same for other features that require hardware not implemented
in the ubitx.  However if the Radiono controls it you can implement a protocol to do it from whatever hardware you want to use.

>> I could even mount the uBitx inside the K3/0.<<

Space permitting, you may need more power too.

You may look at Andy's, KB1OIQ work for ideas not mentioned here.

Allison
 

Re: uBITX SSB filter response question #ubitx

ajparent1/kb1gmx
 

An ideal filter would have a flat to and the skirts would be vertical.
Typical commercial filters are specified as 3 db flatness in the pass band for low cost and higher
end might be 1db across the passband.

3db pass band flatness is satisfactory for all but critical applications.

The other specification is the ultimate stopband attenuation typically for a transmit filter
60db is adequate and for receiving anywhere from 80 to 140db is seen.  For really good
stop bands shielding and grounding of the cans is a must. Usually they have a
specification for the 6 to 60db points where a shape factor of 1.2 is very good and 1.4
is good and 2 is only ok.

If you want to you could replace the capacitors with a smaller value and then pad smaller
value caps while watching the shape.  You can also adjust the termination at both ends for
best shape and response.  This is an iterative approach in the empirical realm.  However
with patience the results can be extremely good.  I usually use 0803 size caps for this 
and from known sources SMT parts can be good to excellent.  Here is a trick for those 
doing high performance attempts. All capacitors have unintended series resistance
which lowers their Q.  One way to get around that is if the value is say 100PF use
two 50 pf in parallel as the series resistance is in parallel as well the effective
Q just doubled.  FYI you could use three 33pf with an effective Q of 3x.   It also
makes it easier to use smaller values to get larger ones.  Stacking SMT caps and
resistors at HF works well with no ill effects and allows one to get any value
desired even non standard.


Allison

Re: Newbie questions...

Lee
 

You will get another PayPal email when it it shipped.   Currently shipping orders from March 17th,   A good site that also has shipping info is http://ubitx.net/

Re: uBITX SSB filter response question #ubitx

ajparent1/kb1gmx
 

Scan rate for real network analysers is a variable like a O'scope and should be slow for narrow band measurements.
For my Rigol 815T and the HP8568B or a PNA like the HP 8753C, Agilent-8357A  I use 100HZ and not faster
than 500mS ( about 5 seconds to scan the frequency span of about 8khz).  This has nothing to do with baud
rate that is the transfer speed after the data is acquired.  You didn't say what instrument and PSHNA is not
something I've used.

If you sweep too fast what happens it the filter rigs like a bell and the propagation delay through the filter results
is a very lop sided curve.  An effect of generate a discrete frequency and then measure the output of DUT before
things have settled.

Your cables and transformers must be terrible!  The usual measurements (S21 transmission or though measurement)
for RG316 1 meter cables and 1:4- 4:1 back to back transformers at 12mhz range is on the order of maybe 1-2 DB total.
The usual transformer I make up is a Trifilar would 2 hole balun (fT43-202) and usually measures out as .6-9db each
(two of them back to back for 50 to 200, 200 to 50) in the HF range.  However you did back out the measured response
to get a valid one.

To get losses higher like that I'd be playing at maybe 200-300mhz or used really poor ferrite likely both!


Allison


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


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.

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

#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: 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


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

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