Date   

Re: U3S As A Plain CW Beacon Transmitter

Albert Tatlock's Greatest Hits - Vol 1
 

On Mon, Oct 18, 2021 at 07:20 PM, Albert Tatlock's Greatest Hits - Vol 1 wrote:
Not sure what else to suggest, unless there's something creative that can be done
with the one minute interval.
Hmmm, one other thought that might be worth considering.

The U3S IIRC can do the constant carrier FSK CW, the one often used on 10m
beacons and had a a wide shift, user defined something like 200Hz.

Usually the person at the other end tuned on the right sideband to zero beat, and then reads off
off the keyed FSK as normal CW.

(Not to be confused here with with QRSS style FSK that uses VERY slow Morse and about 5Hz
shift.).

That way you could have FRAME = 0 and then as it sends the MESSAGE you'll always have
an ON carrier.

I guess this might depend upon how you're trying to style you beacon output.

Just a thought.


Re: U3S As A Plain CW Beacon Transmitter

Bill Cromwell
 

I looked at the manual for the U3S With the idea that I might be able to use it as a multi-band CW transmitter. Not CW beacon. I would use it as part of a transmitter and receiver rig. When I get close to finishing some other projects I will order one and abandon the WSPR and beacon stuff. You could do that and have your electronic keyer do your beacon sending. The keyer can handle whatever you want to send and any pauses needed. If it can't give a "tune" function you need a different keyer OR a straight key wired in parallel.

Just a thought.

73,

Bill KU8H

bark less - wag more

On 10/18/21 1:02 PM, fintronicsusa wrote:
I'm currently building a triple CW beacon transmitter using, (you guessed it) three U3S's in one enclosure.
They will operate simultaneously on three different freq/bands.

In my opinion, plain CW is still a viable mode because for one reason, you don't need a computer to decode it. Anyone with an analog radio and a piece of wire can hear it (hopefully).There are still very many active CW beacons all over the world and not just on the amateur bands.
I do however understand and appreciate the forward movement in technology regarding the specialty modes and all the advantages so no need to preach to the choir (grin)

I'm using the U3S for several reasons. It's a solid design, extremely well supported, self contained, fun and easy to build and it's inexpensive.
However.... it just needs two more very simple (Hans is laughing) additions to make it the perfect plain CW beacon transmitter.

1) There needs to be some way to implement a tune function. A way to transmit a steady carrier while in the CW beacon mode.
The method of adding a wait state with the "Frame"  parameter and pressing the S2 button to generate a carrier works in WSPR but is not practical in a CW beacon because the minimum wait state set in the frame parameter is one minuet. That's too long a pause to have in a CW beacon message.
A second or two would be perfect.

2) I'm not sure if this is possible but it would be great to be able to set the power level in dbm steps like in WSPR mode.
As far as I know, right now, the only way to adjust power output is with the bias pot.

Comments?


Re: U3S As A Plain CW Beacon Transmitter

Albert Tatlock's Greatest Hits - Vol 1
 

On Mon, Oct 18, 2021 at 07:02 PM, fintronicsusa wrote:
"Does pressing the right hand button not work for you on the U3S to enable a tune carrier ?"

Only if you enable a wait state as I explained above.
Aha yeah I was just this minute (!) thinking about this ;-)

Not sure what else to suggest, unless there's something creative that can be done
with the one minute interval.


Re: Paddle Type for QCX mini #40m

Curt wb8yyy
 

Caleb

Fantastic to have you interested in ham radio and cw.  Since you have to learn how to receive cw before sending, you have time to acquire a key and a paddle. 

Check hamfests and local hams to find a good deal on a quality key. 

My own preference is to use a two lever aka iambic paddle. Maybe merely because it's what I learned on. They may be more common. I may agree it takes more skill to use a single lever paddle, I don't have it. 

Start learning to copy cw and be patient acquiring sending hardware. 

Curt


Re: Question about customizing the QLG2/QLG2-SE serial data #clock #gps

Luciano Gasparini PT9KK
 

I tried customizing the QLG2-SE in such a way to have both GPS and Galileo running, at the same time, according to the explanation presented on aforementioned subject but, unfortunately NaviTrack won't work at all. It does recognize the COM port, I set it to 9600 but no response whatsoever. No action, nada, niente, nulo...

What kind of interface are you guys running from the QLG2-SE and the USB, please? Any hints?
I'm running Win10.

73,

Luciano Gasparini PT9KK


Re: U3S As A Plain CW Beacon Transmitter

 

Not unusual at all! Hope you don't mind my having fun with you!
--
Julian, N4JO.


Re: U3S As A Plain CW Beacon Transmitter

fintronicsusa
 

One "minute"... ha!.... always had a problem with that word :)


Re: U3S As A Plain CW Beacon Transmitter

fintronicsusa
 

"Does pressing the right hand button not work for you on the U3S to enable a tune carrier ?"

Only if you enable a wait state as I explained above.


Re: U3S As A Plain CW Beacon Transmitter

Albert Tatlock's Greatest Hits - Vol 1
 

On Mon, Oct 18, 2021 at 06:02 PM, fintronicsusa wrote:
In my opinion, plain CW is still a viable mode because for one reason, you don't need a computer to decode it. Anyone with an analog radio and a piece of wire can hear it (hopefully).There are still very many active CW beacons all over the world and not just on the amateur bands.
Go for it.

There's still LOTS of us who appreciate and use the plain old CW beacon, and I wish there were more
doing it.

1) There needs to be some way to implement a tune function. A way to transmit a steady carrier while in the CW beacon mode

Does pressing the right hand button not work for you on the U3S to enable a tune carrier ?

(Might be called S2 on the circuit diagram).

It always worked for me in the past, and if I remember correctly there's even a couple
of spare pins on the PCB to add a separate switch to.

All of my U3S's rigs are remote from me at this time so  I can't confirm it, but I'm pretty
darned sure that pressing what I call the "right hand button" that you use to enter
menu parameters with will act as a tune button.

Good luck.


Re: Paddle Type for QCX mini #40m

 

On Mon, Oct 18, 2021 at 12:35 PM, Bruce Prior wrote:
Many of the most skilled CW operators use single-lever paddles. 
Yes, exactly. Let's help him get there first :-)
 
--
Julian, N4JO.


Re: vfo/signal generator

Ronald Taylor
 

Syd, that pot adjusts the contrast, not the brightness. Brightness is controlled via a jumper at A0….A3 or choosing a different value for R2. 

See the manual page 7 for fitting a 220K resistor at R4 or a jumper with no R4. 

Hope that helps. 73…. Ron

On Mon, Oct 18, 2021 at 09:51 Syd via groups.io <nhuq1=yahoo.com@groups.io> wrote:
I'm a little confused here.  The signal generator kit comes  with a relay switched kit and 5 LPFs which each use 3 toroids to make L1 - L3!  The main PCB also contains 1 LPF with 3 more toroids! The construction manual for the LPFs has a table that shows what kind of toroid to use for each inductor.

Now going back to my original thread about the problems I am having with this kit. For the most part, with the LPF relay board removed, I can now see out of the synthesizer IC a nice almost square wave at 15 MHz. So with relay board removed I put in a 20m filter on the main board and now for the first time I see a sine wave at the output of this filter. Measuring the output level with my new TinySA, I can see close to 0 Dbm at the CLK0 output pin and also at the rf output of the LPF!  So now I think that all I have to do is plug in the rotary encoder, and plug in the switched relay board to finish this thing. Then check the band configurations in the setup menu. I did put the 10m LPF into the first slot of the filter relay board and then put the other LPFs, 15m thru 40m, into the remaining slots of the relay board with the 60m LPF on the main board.  I hope I got this right.

One more item. I noticed that, on powering up, I had to adjust the brightness  pot to get the LCD to be more visible, but the pot was at the end of it's range.  I seem to recollect that there is a resistor that can be added to decrease the sensitivity of this pot. Hope this makes this adjustment easier to do.
syd/wt1v 


Re: Paddle Type for QCX mini #40m

Bruce Prior
 

Hi Caleb --
Two American Morse Equipment single-lever paddles are worth considering. The Bushwhacker <American Morse Equipment - Bushwacker Sideswiper/Single Lever Paddle Kit> is the is the better one, but it may be a bit too heavy for portable operating. A good alternative is the Mini-B <American Morse Equipment - Mini-B Miniature Single Lever/Sideswiper Paddle>, which is lightweight and well-protected inside its aluminum cover.. You need not venture beyond single-lever paddling. My favorite home paddle is the Begali Sculpture Mono <Sculpture mono - Begali's Web site (i2rtf.com)>, which is expensive and quite heavy. I would never take it outside. Many of the most skilled CW operators use single-lever paddles. 
--
73, Bruce Prior N7RR


Re: Paddle Type for QCX mini #40m

 

Hi Caleb,
As a learner myself (in my case, an older one), still having trouble with CW, I would advise you that learning to read/copy CW is a completely different - and, surprisingly perhaps,  typically much harder - process to learning to send. I would therefore encourage you to use the built-in Iambic key and and a dual paddle key, precisely  because you will learn proper cadence by doing so. You can then learn to master the straight key once you know what it should sound like.
Almost everybody can send faster than they can read, and they almost certainly learned to do so faster as well. I would also relay advice that I've received and fully and enthusiastically endorse: forget about sending at all until you can read at least 10WPM, preferably 15WPM; that way you will a) put the focus where it needs to be, and b) not get into trouble sending faster than you can read - an easy mistake for a beginner (in a QSO people will naturally respond at the rate that you send, so you can get into a pickle really easily).

I would also advise joining SKCC - the Straight Key Century Club - where you will meet a lot of friendly helpful people (many of whom show up here too) who will help you on your journey to competence in CW. They have online events like the SSS, or "Slow Speed Saunter" and even a beginners' spot on several of the HF bands for likes of us beginners who need patience and help.

Good luck, you're among friends here.
--
Julian, N4JO.


Re: U3S As A Plain CW Beacon Transmitter

 

Well now, a wait time of one minuet isn't really too long: Bach's minuet in G is only two minutes long, and Boccherini's in A is only three and a half. You could listen to each of them while you're waiting...  ;-)

--
Julian, N4JO.


Re: Paddle Type for QCX mini #40m

N3MNT
 

The type of  key most hams use is based on preference.  You will get many answers, but I suggest you try a few ( at a friends) and find what you like and stick with that style.  When you decide.  Look at EA3PP website.  He has some excellent keys at very reasonable prices,  You may have to wait a few weeks, but it will be worth it.  In the mean time most hams have a closet full of keys so try to borrow one.


U3S As A Plain CW Beacon Transmitter

fintronicsusa
 

I'm currently building a triple CW beacon transmitter using, (you guessed it) three U3S's in one enclosure.
They will operate simultaneously on three different freq/bands.

In my opinion, plain CW is still a viable mode because for one reason, you don't need a computer to decode it. Anyone with an analog radio and a piece of wire can hear it (hopefully).There are still very many active CW beacons all over the world and not just on the amateur bands.
I do however understand and appreciate the forward movement in technology regarding the specialty modes and all the advantages so no need to preach to the choir (grin)

I'm using the U3S for several reasons. It's a solid design, extremely well supported, self contained, fun and easy to build and it's inexpensive.
However.... it just needs two more very simple (Hans is laughing) additions to make it the perfect plain CW beacon transmitter.

1) There needs to be some way to implement a tune function. A way to transmit a steady carrier while in the CW beacon mode.
The method of adding a wait state with the "Frame"  parameter and pressing the S2 button to generate a carrier works in WSPR but is not practical in a CW beacon because the minimum wait state set in the frame parameter is one minuet. That's too long a pause to have in a CW beacon message.
A second or two would be perfect.

2) I'm not sure if this is possible but it would be great to be able to set the power level in dbm steps like in WSPR mode.
As far as I know, right now, the only way to adjust power output is with the bias pot.

Comments?


Re: vfo/signal generator

Syd
 

I'm a little confused here.  The signal generator kit comes  with a relay switched kit and 5 LPFs which each use 3 toroids to make L1 - L3!  The main PCB also contains 1 LPF with 3 more toroids! The construction manual for the LPFs has a table that shows what kind of toroid to use for each inductor.

Now going back to my original thread about the problems I am having with this kit. For the most part, with the LPF relay board removed, I can now see out of the synthesizer IC a nice almost square wave at 15 MHz. So with relay board removed I put in a 20m filter on the main board and now for the first time I see a sine wave at the output of this filter. Measuring the output level with my new TinySA, I can see close to 0 Dbm at the CLK0 output pin and also at the rf output of the LPF!  So now I think that all I have to do is plug in the rotary encoder, and plug in the switched relay board to finish this thing. Then check the band configurations in the setup menu. I did put the 10m LPF into the first slot of the filter relay board and then put the other LPFs, 15m thru 40m, into the remaining slots of the relay board with the 60m LPF on the main board.  I hope I got this right.

One more item. I noticed that, on powering up, I had to adjust the brightness  pot to get the LCD to be more visible, but the pot was at the end of it's range.  I seem to recollect that there is a resistor that can be added to decrease the sensitivity of this pot. Hope this makes this adjustment easier to do.
syd/wt1v 


Paddle Type for QCX mini #40m

Caleb KO4UDX
 

Good afternoon everyone. I’m Caleb and I’m completely new to all of this radio stuff. I’ve bought and mostly assembled the QCX mini except for the final tuning. My question though is what kind of key/ paddle can I use. Will it work with a single key?  Im trying to learn about all this stuff and want to order the right type the first time.  I’m trying to not use a lambic keyer for my first learning experience. The two links below are ones that I think would be good for me but I’m open to suggestions. Thank you. 


https://www.americanmorse.com/bushwacker.htm

https://www.americanmorse.com/lowboy.htm


Re: QDX BPF/LPF Switching Frequencies and tuning range.

Ryan Flowers
 

QDX will not change bands with just a filter adjustment, as it will need the firmware updated as well. Hans has covered this in various topics. I condensed it all here if you'd like to have a look:

https://youtu.be/M_8pi-vxJss?t=129
--
Ryan Flowers - W7RLF
MiscDotGeek - QRP and More (Website)

QDX News, Tips, Build Series (YouTube)
QCX Mini "Mini Tip" Series (YouTube)
QCX Mini Troubleshooting and Repair (Website)


Re: QDX BPF/LPF Switching Frequencies and tuning range.

Alan G4ZFQ
 

This is from the QCX mini FAQ.
Mike,

Yes, I expect the QDX will tune the same range. But I'd like that confirmed.
My main interest is the frequency the filters switch, would I need to change the 80 or 40m LPFs should I decide to try 60m?

Practically speaking, the Band Pass Filter attenuates the signals outside the amateur radio bands.
People have said adequate results from the QCX are achieved outside the BPF range. The LPF fitted limits the upper frequency to a greater degree.
The QDX BPF will not be too sharp, again I'd expect reasonable general coverage over 3.5-15MHz.

A simple switch will enable SSB reception for the QCX although not ideal. The bandwidth is wide and image rejection not particularly good.

73 Alan G4ZFQ




On Oct 18, 2021, at 4:54 am, Alan G4ZFQ <alan4alan@gmail.com> wrote:

I was wondering if it would cover 60m. (And then wondered about 17m, I favour lesser-used bands.)

Will it tune to any frequency above 3.5MHz?
At what frequencies do the filters change? Is there a chance of these switches being made configurable at some time?

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