Date   
Re: Dumb question #ubitx

 

the 40/20m versions are the single band versions if you have a Ubitx you do not want them. You want the ubitx all band or 10-80m versions.

Re: Teensy DSP filter

 

Take a look through "dspfilter.h" and "settings.h" they have pin settings for encoders

Re: Teensy DSP filter

 

also try DLing http://fritzing.org/home/ to view his circuit diagram

Re: Fuse size for UBITX

Jerry Gaffke
 

I think the ideal is a 1n400x diode for reverse battery protection plus a 0.5 Amp fuse, both in series from the 12v supply into the main uBitx board.
Then a separate 3 Amp fuse for power into the IRF510 finals, no diode as we don't want to lose power due to the forward voltage drop here.

Could reduce those fuses to 0.25 Amps and 2 Amps respectively for better protection, but might be more likely to blow unnecessarily.

Jerry


On Sat, Jan 6, 2018 at 01:14 pm, John McFadden wrote:
A prior discussion said a fast blow 2.0 amp, I've only seen draws in the 1.3 amp range,  so I've been happy with that fuse so far. 
 

Re: W0EB's Keying Adapter

Dave Bottom <ars.kd6az@...>
 

CW Keying
Ian, KD8CEC's firmware I am beta testing made a huge improvement.  He also added TX delay setting (you can adjust) and TX>RX delay setting (you can adjust).  Very nice  

The only remaining issue is the contact resistance - at 25 WPM on the paddle I can still get an occasional dah instead of a dit.   Clean contacts or not using resistance to differentiate a dit from a dah is not the answer .  I think I'd give up the extra Raduino pin and have a simple Keying arrangement for paddles and a Menu setting (paddle or straight key) to make one of the paddle contacts the straight key contact like almost all radios do today.

Smoother Tuning
Ian has also cleaned up the tuning a bunch with virtually no unexpected jumping, but I'd like to see the ability to change the tuning step size from 50Hz to 10Hz as the tuning is pretty coarse for small tuning knobs, and maybe also add 100Hz and 1KHz to make moving from CW to SSB portion of the band (and vice versa) a bit quicker.  I'm also thinking of making a spring loaded drag adjustment for the tuning knob so you can still access the Menu, but have a bit more stable frequency setting.  Push (the Menu Knob) to set often changes your setting.  I really like that Ian chose to use "Press the PTT" to effect saving a setting with his TX delay and TX>RX delay settings.  This is worth considering for all Menu settings?  Again very nice work Ian!

CAT working
Ian also has CAT working (FT-817 mode) on Ham Radio Deluxe.  I haven't tried this yet. Maybe tomorrow.

Where did I leave the BFO offset?
One final thing I noticed with the default firmware is that when setting the BFO frequency offset it always starts a the same default place, not where it is currently set.  When tweaking this it would be nice to know where you last set it.  The right settings give beautiful SSB audio.  Problem is where did I set it so I can tell others???

Dave WI6R



On Sat, Jan 6, 2018 at 11:30 AM, Jim Sheldon <w0eb@...> wrote:
First off, I'm not a programmer so that fix will have to be done by someone else.  My keying adapter was and still is an attempt at a temporary fix to allow the rig to actually operate CW in a reasonable manner until someone with more programming savvy than me could fix the program in a more elegant manner.  Using the FET switching circuit on the paddle inputs did not improve the operation of the keyer enough to make it work right.  However, using one stage of the FET circuit on the key input DID make it usable for hand keys and even bugs with less than perfect contacts.  An external keyer should work without my adapter as long as the ON resistance of the keyer's output stage is in the milli-Ohm range which will make the uBITX's keying circuit happy.
There were enough people having trouble initially and were unhappy with even hand key CW operation (including myself) that  I started looking for some sort of a fix.  

As I stated earlier, my simple FET adapter will allow reasonable CW operation until Ashhar Farhan or some other good programmer comes up with a program fix that works.

Jim Sheldon, W0EB


On Jan 6, 2018, at 1:11 PM, KD8CGH <rkayakr@...> wrote:

If you abandon paddles, wouldn't it be easier to change Farhan's code to only detect 2 levels or configure A6 to be a digital I/O?

As a bonus you could add CW Key mode and use A6 as a digital input and add Cw Paddle mode to use A6 & A7  for the digital inputs for the paddle.




--
73 Dave WI6R

Re: Dumb question #ubitx

Jerry Gaffke
 

Here's the uBitx firmware as shipped from hfsignals:  https://github.com/afarhan/ubitx
Have seen some minor fixes to the code mentioned mentioned in the forum, mostly with regard to use on CW.
No other complete package yet that I am aware of, though new firmware will show up eventually.

Jerry, KE7ER



On Sat, Jan 6, 2018 at 03:35 pm, N8DAH wrote:
the 40/20m versions are the single band versions if you have a Ubitx you do not want them. You want the ubitx all band or 10-80m versions.

Re: Looking for ND6T

Don, ND6T
 

AT&T suffered a cut fiber early this morning. Perhaps they no longer work on weekends since it's still down! Entire region is isolated, I'm using another route for this message. Fingers are crossed that they will repair it any moment. Sorry! -Don

Re: Fuse size for UBITX

Don, ND6T
 

I've been using a polyfuse in series with the entire power, followed by a 1N7001 to ground for 3 weeks now. Although only rated at 1.5 amps, no problems.
ND6T

Re: Dumb question #ubitx

Jerry Gaffke
 

I don't think Ian's has been released yet,
should be a good choice for the uBitx once it has been tested.
Thanks Ian!


On Sat, Jan 6, 2018 at 04:09 pm, Jerry Gaffke wrote:
No other complete package yet that I am aware of, though new firmware will show up eventually.

Re: uBITX tuning issue

Dave Bottom <ars.kd6az@...>
 

Jeff,

If you are certain of your wiring, then you should check that all grounds are connected (to the same point). See the construction notes about a heavy gauge ground wire from Power Connector to a common ground point that the PCB Ground Plane is connected to.  Although the ground lead to the Encoder is connected on the PCB ground plane you can have strange behavior if you have long leads, or the PCB Ground Plane is not connected with a heavy gauge wire to theh Power connector (solder lug under a nut for one of stand-offs).  

Mine is in a metal box and I have twisted all the encoder leads prior to connecting, and as noted in the instructions, keep these as short as is reasonable for your layout.  You will note that Farhan has done this in his assembly pictures.

This is a surprisingly quiet radio.  First generation Amateur gear (e.g Drake Solid State Rigs with Digital Readouts e.g. TR7) had far more birdies and weird noise behavior from their digital display board (shielded better in their later design rigs e.g. TR5). Careful layout, proper ground planes on the PCB, and surface mount parts that make each stage very tidy must help a lot with the MicroBITX.  I'm liking it a lot, if you can't tell.

Construction Practices
I'm actually going to replace all of the leads to jacks with shielded cables as I have them all on the rear panel (now the leads are twisted together and run against the metal case under the PCB) and the shields and Power Ground (plus PCB Ground Plane) should all connect to one Ground lug against the metal case.  In other words don't connect each to a different ground points (ground loops can result).  You can use an xacto nife tip to release the pin contact and re-solder leads that you want to shield where they had been crimped.  Just use a very small amount of solder (thin solder and a small tip soldering iron), then reinsert.

These are necessary construction practices to ensure stable operating radios, especially when you begin transmitting. Any pickup on the wrong leads can give strange results.  In my case (pun intended) all Raduino ground contacts are connected to the front panel and all audio grounds are connected at the rear panel.  The Mic Audio ground is entirely separate on purpose to eliminate RFI and audio ground loops.   The only lead that comes from the Raduino connector to the Mic jack is PTT.  This could be run outside of shielded Mic leads and tie wrapped to the shielded Mic cable. 

In most modern HF radios (last 25 years) the Mic shield connects to the chassis at the Mic connector for RFI shielding, but both Mic leads (Mic+ and Mic-) pass through separate pins of the Mic connector (usually an 8-Pin Foster style Mic connector) and the Mic- lead does reach ground until it is at the Mic pre-amp on whatever PCB it resides (usually the TX/IF PCB).  That's where the Mic is terminated.  In this way there are few chances for RFI or Audio Ground Loop issues.  

New SDRs that have a DAC (Digital Analog Converter)  that supports both TX and RX audio, then all leads now go to the same PCB ground plane area at the DAC.  It's a lot simpler, but both Mic leads are quasi balanced (off ground at the connector).

Dave WI6R

On Sat, Jan 6, 2018 at 1:51 PM, jlco001 via Groups.Io <jlco001@...> wrote:
Hello all,

I just fired up the radio for the 1st time and the tuning does not work. If I tune up or down, it will change .050 then go back to .000 as I turn the knob further. Also, when I press the encoder knob in, it says "Band Select", but nothing happens when I turn the knob. When pressed again, it says " Press to Confirm" and when pressed it goes back to frequency readout. I can hear static when with antenna connected and it will go into transmit. It seems all else is working.

I wired the encoder per the picture on step 3.1, and NOT using the schematic, as I believe it is not correct (doesn't match the picture). Does the yellow wire need to connect to chassis ground? Is that my problem?

Any help greatly appreciated!

Jeff 




--
73 Dave WI6R

Re: W0EB's Keying Adapter

Jim Sheldon
 

Dave,
Please keep us posted on how that works out.  I sure would like to see the keyer work and the hand key work without the adapter I designed as a temp fix.  Also I'd like to see the tuning smoother without going into high speed and jumping several hundred KHz just as you approach the frequency you want.  That is about to drive me crazy - LOL. Being able to select the digit and achieving higher speed tuning that way like most other rigs of this type do would really be a big help. Also, the band select menu Item should start with the KHz digits at 000 and the 1 MHz digit selected for band tuning as the default, but be selectable so you could change bands more slowly if you want.  

I agree 100 percent that the BFO adjustment should be saved at either PTT or encoder switch press (whichever winds up being the means to save it.) I vote for PTT though as sometimes pressing the encoder switch causes a small rotation and the frequency changes when you don't want it to. 

Enough for now, but please keep me in the loop on the keyer and tuning fixes as they prove out in your beta test.  I still have to learn how to upload program changes to the Nano without bricking it - LOL.

Jim Sheldon, W0EB


On Jan 6, 2018, at 5:53 PM, Dave Bottom <ars.kd6az@...> wrote:

CW Keying
Ian, KD8CEC's firmware I am beta testing made a huge improvement.  He also added TX delay setting (you can adjust) and TX>RX delay setting (you can adjust).  Very nice  

The only remaining issue is the contact resistance - at 25 WPM on the paddle I can still get an occasional dah instead of a dit.   Clean contacts or not using resistance to differentiate a dit from a dah is not the answer .  I think I'd give up the extra Raduino pin and have a simple Keying arrangement for paddles and a Menu setting (paddle or straight key) to make one of the paddle contacts the straight key contact like almost all radios do today.

Smoother Tuning
Ian has also cleaned up the tuning a bunch with virtually no unexpected jumping, but I'd like to see the ability to change the tuning step size from 50Hz to 10Hz as the tuning is pretty coarse for small tuning knobs, and maybe also add 100Hz and 1KHz to make moving from CW to SSB portion of the band (and vice versa) a bit quicker.  I'm also thinking of making a spring loaded drag adjustment for the tuning knob so you can still access the Menu, but have a bit more stable frequency setting.  Push (the Menu Knob) to set often changes your setting.  I really like that Ian chose to use "Press the PTT" to effect saving a setting with his TX delay and TX>RX delay settings.  This is worth considering for all Menu settings?  Again very nice work Ian!

CAT working
Ian also has CAT working (FT-817 mode) on Ham Radio Deluxe.  I haven't tried this yet. Maybe tomorrow.

Where did I leave the BFO offset?
One final thing I noticed with the default firmware is that when setting the BFO frequency offset it always starts a the same default place, not where it is currently set.  When tweaking this it would be nice to know where you last set it.  The right settings give beautiful SSB audio.  Problem is where did I set it so I can tell others???

Dave WI6R



On Sat, Jan 6, 2018 at 11:30 AM, Jim Sheldon <w0eb@...> wrote:
First off, I'm not a programmer so that fix will have to be done by someone else.  My keying adapter was and still is an attempt at a temporary fix to allow the rig to actually operate CW in a reasonable manner until someone with more programming savvy than me could fix the program in a more elegant manner.  Using the FET switching circuit on the paddle inputs did not improve the operation of the keyer enough to make it work right.  However, using one stage of the FET circuit on the key input DID make it usable for hand keys and even bugs with less than perfect contacts.  An external keyer should work without my adapter as long as the ON resistance of the keyer's output stage is in the milli-Ohm range which will make the uBITX's keying circuit happy.
There were enough people having trouble initially and were unhappy with even hand key CW operation (including myself) that  I started looking for some sort of a fix.  

As I stated earlier, my simple FET adapter will allow reasonable CW operation until Ashhar Farhan or some other good programmer comes up with a program fix that works.

Jim Sheldon, W0EB


On Jan 6, 2018, at 1:11 PM, KD8CGH <rkayakr@...> wrote:

If you abandon paddles, wouldn't it be easier to change Farhan's code to only detect 2 levels or configure A6 to be a digital I/O?

As a bonus you could add CW Key mode and use A6 as a digital input and add Cw Paddle mode to use A6 & A7  for the digital inputs for the paddle.




--
73 Dave WI6R

I'm /AE

Doug W
 

I know this is a total waste of bandwidth but since non radio people don't get I had to tell someone.  As of this morning I am /AE.  I opted for a new sequential call so we will see what the FCC flings at me.  I owe you guys part of the credit.  Trying to tread in some of the deeper water here pushed me to study and learn more.
Thanks,
Doug  KD9CYF/AE

Re: I'm /AE

Ken Hansen
 

Excellent! Congratulations!

Ken, N2VIP

On Jan 6, 2018, at 6:43 PM, Doug W <KD9CYF@...> wrote:

I know this is a total waste of bandwidth but since non radio people don't get I had to tell someone.  As of this morning I am /AE.  I opted for a new sequential call so we will see what the FCC flings at me.  I owe you guys part of the credit.  Trying to tread in some of the deeper water here pushed me to study and learn more.
Thanks,
Doug  KD9CYF/AE

Re: I'm /AE

Xcott Craver
 

Congratulations!  Now you need to adjust your center frequencies, and get your antennas to match over wider bands.

Re: I'm /AE

Arv Evans
 

Doug  KD9CYF/AE

Congratulations!

Arv  K7HKL
_._


On Sat, Jan 6, 2018 at 5:43 PM, Doug W <KD9CYF@...> wrote:
I know this is a total waste of bandwidth but since non radio people don't get I had to tell someone.  As of this morning I am /AE.  I opted for a new sequential call so we will see what the FCC flings at me.  I owe you guys part of the credit.  Trying to tread in some of the deeper water here pushed me to study and learn more.
Thanks,
Doug  KD9CYF/AE


Re: I'm /AE

Gordon Gibby <ggibby@...>
 

​Huge congrats!!!!! 

Getting more and more trained hams is an important asset for any nation.




From: BITX20@groups.io <BITX20@groups.io> on behalf of Arv Evans <arvid.evans@...>
Sent: Saturday, January 6, 2018 7:54 PM
To: BITX20@groups.io
Subject: Re: [BITX20] I'm /AE
 
Doug  KD9CYF/AE

Congratulations!

Arv  K7HKL
_._


On Sat, Jan 6, 2018 at 5:43 PM, Doug W <KD9CYF@...> wrote:
I know this is a total waste of bandwidth but since non radio people don't get I had to tell someone.  As of this morning I am /AE.  I opted for a new sequential call so we will see what the FCC flings at me.  I owe you guys part of the credit.  Trying to tread in some of the deeper water here pushed me to study and learn more.
Thanks,
Doug  KD9CYF/AE


Re: I'm /AE

Laurence Oberman
 

Congrats 

Now you get all the frequencies. I must say I enjoyed getting extra so I could stop being stuck in General land.

KB1HKO

On Jan 6, 2018 8:22 PM, "Gordon Gibby" <ggibby@...> wrote:

​Huge congrats!!!!! 

Getting more and more trained hams is an important asset for any nation.




From: BITX20@groups.io <BITX20@groups.io> on behalf of Arv Evans <arvid.evans@...>
Sent: Saturday, January 6, 2018 7:54 PM
To: BITX20@groups.io
Subject: Re: [BITX20] I'm /AE
 
Doug  KD9CYF/AE

Congratulations!

Arv  K7HKL
_._


On Sat, Jan 6, 2018 at 5:43 PM, Doug W <KD9CYF@...> wrote:
I know this is a total waste of bandwidth but since non radio people don't get I had to tell someone.  As of this morning I am /AE.  I opted for a new sequential call so we will see what the FCC flings at me.  I owe you guys part of the credit.  Trying to tread in some of the deeper water here pushed me to study and learn more.
Thanks,
Doug  KD9CYF/AE


Re: I'm /AE

George Baumann
 

Congratulations!!


N0NGQ

Re: Looking for ND6T

Dexter N Muir
 

Thanks, Don. Good to know you're surviving the cold (well, better than the fiber, anyway!)
73 de ZL2DEX in sunny 'up over'.

Re: I'm /AE

AndyH
 

Not a waste at all - Congrats!   \o/

Andy, KG5RKP


On Sat, Jan 6, 2018 at 04:43 pm, Doug W wrote:
I know this is a total waste of bandwidth but since non radio people don't get I had to tell someone.  As of this morning I am /AE.  I opted for a new sequential call so we will see what the FCC flings at me.  I owe you guys part of the credit.  Trying to tread in some of the deeper water here pushed me to study and learn more.
Thanks,
Doug  KD9CYF/AE