Date   

Use FT1XD GPS as input for QCX

Jan Brink
 

Anyone has tried to use Yaesu FT1DX GPS output for QCX (WSPR operation) ? Cable CT-170 should fit ?


Re: Cheap HB dummy load

tmmlrd
 

I don't know the device you are speaking about.  Could someone please post a ref or link? I surfed the web with "cheap HB dummy load" but didn't find an exact match... thanks
73


Re: Just saying thanks

Alexander Korotkevich
 

I can tell you for sure, that at least me used the QCX mini order to stimulate myself to finish the Koch lessons. So it really works this way!

73!

de Alex, W5KAO/RV3DFL.


Re: If a U4B was to be used as a garden dipole

VE3KCL
 

Attached is an interesting site for wspr spot tracking.  https://wspr.live/gui/d/LmMd4oUiz/station-activity?var-sign=VA3UAL&var-mode=tx&var-not_mode=rx&var-band=10&var-band=14&var-band=28&from=now-30d&to=now&orgId=1
It is set up for the dipole, but you can enter your own call (or two calls) and use the many wonderful features to visualize wspr transmission and reception.
The U4B fan dipole's Basic program looks at the battery voltage and transmits from 2 to 3 times an hour depending on the voltage, and only one time an hour, if the solar voltage is low.
The above Grafana site is quite interesting and fun to use. By changing the variables, you can visualize different things relating to your wspr spots ,your rx antenna profile or other data.
In Canada the month of December is a poor source of sunshine, so the solar dipole would not transmit 24/7 and would go to sleep early and wait till about 10 am local when there was enough winter light to transmit. Looking at the recent days spots graph, the solar cells have been able to charge the lipo battery to get 3 transmissions per hour, so the number of spots have come up and hopefully this frequency will continue through summer to late fall.
73 Dave VE3KCL VA3UAL 


Re: Second Best location for an antenna tuner #antenna #tune

Jim Allyn - N7JA
 

I used random length wire antennas for several decades before there was such a thing as an autotuner (or at least, I was unaware of their existence if they did exist).  So, the manual tuner was always right at the rig where I could tune as needed.  The best place for a tuner is wherever it allows you to get on the air.  Easy peasy.  At the other end of the scale, the impedance of an antenna will vary with frequency, therefore the SWR will vary with frequency.  The loss in a transmission line will vary with frequency and will vary somewhat depending upon the SWR present on the line.  Then you have the losses in the balun, which will vary with frequency and with the impedances presented to it at either end.  Of course the losses in the tuner will also depend upon frequency and SWR presented to it.  So, if you really want to know the best place for your tuner, you need to know the impedance of the antenna at several frequencies in each band of interest, the loss in the transmission lines at every frequency and SWR that will be presented to it, and the loss of the balun and the tuner at every frequency and SWR (and power level) presented to it.  You could probably do the measurements on all that in a month or two.  Then you could write a program to calculate which combination of transmission lines, balun location, and tuner location and settings results in the best efficiency.  If that sounds like a lot of fun to you, then that's what you should do.  Otherwise, put the balun and the tuner wherever they are most convenient, and get on the air and have fun.  And maybe now and then, when you feel like it, change something in your system and see if it works any better.  Or don't.

But to answer your question, yes you are presenting a reasonable degree of understanding, as far as it goes.  Now go get on the air.


Re: TX and RX Frequency Difference #40m

Ernie Bailey - N2DGQ
 

Ron and George,

Thanks for you for thoughtful input.  I do not have a GPS.  Setting the ref freq. at 27,0047,036 worked.  If I may ask, what is the math you used to calculate the new ref. freq.?  


Re: TX and RX Frequency Difference #40m

Ronald Taylor
 

Hi Ernie. If you have the 27 MHz reference crystal in there, and if you don't have a GPS, try setting your reference frequency to 27,007,036 and see if that helps.... You are actually 800 Hz off per the numbers you mentioned. Good luck ... Ron


On Mon, Feb 14, 2022 at 4:02 PM George Korper <georgekorper@...> wrote:
 
Hi,
Calibration by GPS will correct this. Did you purchase the QLG2 SE GPS accessory. I can't help you with manual calibration. I'm sure other posts will follow. 
The GPS option is critical for Beacon mode and WSPR. It turns the Mini into a real powerhouse, and each software revision has made it better! 


Re: TX and RX Frequency Difference #40m

George Korper
 

 
Hi,
Calibration by GPS will correct this. Did you purchase the QLG2 SE GPS accessory. I can't help you with manual calibration. I'm sure other posts will follow. 
The GPS option is critical for Beacon mode and WSPR. It turns the Mini into a real powerhouse, and each software revision has made it better! 


TX and RX Frequency Difference #40m

Ernie Bailey - N2DGQ
 

I have just completed my QCX Mini Build for 40M.  The RX and TX Freq seem to be off by about 80Hz.  For example, I TX on 7.115.20 and RBN says I'm at 7116.00.  The delta is consistent no matter where I go on the band.  Do I need to tweak the reference frequency or is this normal operation for the QCX Mini's?

Thank you in advance for your helpful feedback.  


Re: New QDX up and running, but we need to talk about FT8 and QRP

Mike Besemer - WM4B
 

On Mon, Feb 14, 2022 at 02:54 PM, Paulo CT wrote:
Should we start talking about a new spot for digital QRP ops?
No... the QRO guys will just take that over too.

Mike
WM4B


Re: New QDX up and running, but we need to talk about FT8 and QRP

N3MNT
 

I agree completely, however in today's ego driven world I am not sure this is fixable.  For me the challenge/thrill is miles/watt and no simply miles. 


Re: QCX-Mini 20m build complete - couple of issues #20m

@DL2COM
 

Thank you everyone for your comments which have been very helpful! For now I will assume that my QCX is working as it should (no mistakes building it) and I will do my best to avoid the RF issues. 

vy 73 de Leo (DL2COM)


Re: Added Folder /Cheap HB dummy load #file-notice

Pat - N0SHU
 

I've got an idea for an inexpensive dummy load:  


Re: 160m WSPR worked great for me on 1.09 firmware overnight

 

Oh dear, I didn't want to cause trouble :-(

Yeah, "Save State", that works; my troubled mind can handle that.

No, don't change a thing unless you need the space: it ain't broke, so you shouldn't feel the need to fix it!
--
Julian, N4JO.


Re: Second Best location for an antenna tuner #antenna #tune

Roelof Bakker
 

Hi,

Good question and one I have asked myself.

My antenna is a 2 x 16 meter doublet fed with 11 meter open feeder which enters the house in a
fixed cupboard in the living room. Don't ask why!

The shack is upstairs and RG58 coax is run through the ceiling of the fixed cupboard into a
similar cupboard in the upstairs room and further to the radio. All in all about 8 - 10 meter
long.

Talking about convenient, walking downstairs upstairs at every band change is not.

I tried a rf-sensing remote auto-tuner downstairs, but at times it got stuck and required to
be used on a different band first, before it settled at the band of interest.

I am using a 1:4 balun between the auto-tuner and open feeder.

The next thing I did was to compare on all bands 80 to 10 m the antenna current in the open
feeders for:

1. the auto-tuner downstairs and 30 cm RG58 between the tuner and balun.
2. the auto-tuner upstairs next to the radio and 8 - 10 meter coax between tuner and balun.

(Which took quite a bit of upstairs downstairs.)

Much to my surprise and against common theory, the antenna current did not show a signicant
difference on any of the 9 bands used upstairs or downstairs.

My current auto-tuner is a Z-100 plus, located next to the radio and it works.

73,
Roelof, pa0rdt


New QDX up and running, but we need to talk about FT8 and QRP

Paulo CT
 

Hello everyone. Just completed my QDX build sucessfully.

However, running QRP on the actual FT8 channels is an exercise in frustation. Long have gonne the days that a 25w signal was considered QRO.

These are now hosts to a daily megawatt party, with +25db signals and no room for the "little guys". It´s an exercise in frustation.

Should we start talking about a new spot for digital QRP ops?

Cheers

Paulo, CT2IWW


Re: Added Folder /Cheap HB dummy load #file-notice

Jim Strohm
 

Jack,

Nice idea, except that my primary computer is a Mac and it died over the weekend, and my smartphone doesn’t have the functionality to do that.   

After I adjust some things here, I may be able to try that.  

Jim


Sent from my quenched-gap spark transmitter. 

On Feb 14, 2022, at 1:28 PM, jjpurdum via groups.io <jjpurdum@...> wrote:


Jim:

Why not just find the file using Windows Explore (the file utility) and drag it into your email. Just open a few lines where you want it inserted and leave the cursor there, then drag the file from Explore into the email. I do that all the time:


since some people are (wisely) loathe to open an internet file.

Jack, W8TEE

On Monday, February 14, 2022, 02:21:05 PM EST, Jim Strohm <jim.strohm@...> wrote:


And groups.io thinks that a .jpg isn’t a file.    So will need to delete the file folder and create a an image folder for the picture of the dummy load.    

Kind of disappointing and frustrating, given that io.com has been a Unix shop since before grep was invented.   

I’ll share the photo as soon as my phone and your group let me. 

73
Jim N6OTQ 

Sent from my quenched-gap spark transmitter. 

On Feb 14, 2022, at 1:12 PM, William Smith <w_smith@...> wrote:


OK, now 

73, Willie N1JBJ


On Feb 14, 2022, at 2:05 PM, QRPLabs@groups.io Notification <noreply@groups.io> wrote:



Jim Strohm <jim.strohm@...> added folder /Cheap HB dummy load


Re: 160m WSPR worked great for me on 1.09 firmware overnight

mike/w1mt
 

If you do decide to harvest those bytes, could you change how the vfo works at the same time? I've mentioned before but it really makes no sense to go from A -> B -> Split -> then back to A. better that it just goes A -> Split and back to A. Swap should be used as is to go from A to B and back. This is really my only nit with the current UI.

Whatever you decide, thanks for a great little ham radio eco-system!

mike/w1mt


On Mon, Feb 14, 2022 at 2:27 PM Hans Summers <hans.summers@...> wrote:

RIT, VFO A, B and which VFO is current, as well as RIT in 4.2, are all parameters which ahould be thought of as default start-up parameters used in power-up. 

And the "Save settings" action is more of a "Save state" thing that really writes the current state of the VFO, RIT and Speed to those default setting menu items for loading at start-up. 

Those menu items could indeed be dropped. The underlying saved values would still need to be there as would "Save settings" or "Save state" as maybe it should be renamed. 

It's quite a drastic action and I don't feel like I'm quite ready for it... I'll have to sleep on it some. 

73 Hans G0UPL


-------- Original message --------
From: mike/w1mt <w1mt.qrp@...>
Date: Mon, Feb 14, 2022, 9:30 PM
To: QRPLabs@groups.io
Subject: Re: [QRPLabs] 160m WSPR worked great for me on 1.09 firmware overnight
I would go so far as to suggest that menu 4.2 is superfluous and could be deleted thereby saving a few more bytes for other stuff. :)

mike/w1mt

On Mon, Feb 14, 2022 at 12:47 PM Julian N4JO <n4jo@...> wrote:

Hi Hans,

No, not  at all: everything you just typed (and what is in the manual) matches what I observe. What I found misleading is that I expected that any change I made to the setting in 4.2 to be saved on "Save Settings", but it isn't. If I change key speed in 4.2, exit the menu, and re-enter, my change looks like it's there, but if I "Save Settings" and go back into 4.2, what is actually in there is what was previously set using a single press of the left button, which is not the focus of the change I just attempted to make.

In other words, i.m.o. having the ability to change keyer speed in 4.2 is misleading if that value is never retained on "Save Settings". I would have expected that value - given that it is in a menu and editable - to be saved on "Save Settings" (which it isn't), and I would not have expected it to be overridden by the current value on "Save Settings" (which it is). I notice that "Save Settings" saves the current VFO settings too, so your philosophy is consistent, though you have the additional complexity of presets to deal with there.

The reason this came up at all is that when I return a unit to a customer, I go through the menus, reset everything to reasonable/your default values (and replacing my call and Maidenhead Locator with those of my customer in the beacon settings for their convenience, for example), and do a "Save Settings". That includes setting the keyer speed back at 12 WPM (or whatever they had it set to, if I remember), because when I test, I test at my preferred speed, which is 18 WPM. After doing a box-up and re-test, it surprised me that the boot-up keyer speed was back to 18 again, even though I thought I had set it to 12 while going through the menus.

I'm not arguing that it's wrong, it's just the way I think of it, that's all. (I think of the single button press value as being volatile in both ways: to be reset upon boot, and not to be saveable.)  I guess I just don't remember  it being the way it is... not that that means anything ;-)

No worries: if it behaves the way you intended, and it works in 1.08+ the way it always has, I have no issue.

 

--
Julian, N4JO.


Re: Added Folder /Cheap HB dummy load #file-notice

jjpurdum
 

Jim:

Why not just find the file using Windows Explore (the file utility) and drag it into your email. Just open a few lines where you want it inserted and leave the cursor there, then drag the file from Explore into the email. I do that all the time:


since some people are (wisely) loathe to open an internet file.

Jack, W8TEE

On Monday, February 14, 2022, 02:21:05 PM EST, Jim Strohm <jim.strohm@...> wrote:


And groups.io thinks that a .jpg isn’t a file.    So will need to delete the file folder and create a an image folder for the picture of the dummy load.    

Kind of disappointing and frustrating, given that io.com has been a Unix shop since before grep was invented.   

I’ll share the photo as soon as my phone and your group let me. 

73
Jim N6OTQ 

Sent from my quenched-gap spark transmitter. 

On Feb 14, 2022, at 1:12 PM, William Smith <w_smith@...> wrote:


OK, now 

73, Willie N1JBJ


On Feb 14, 2022, at 2:05 PM, QRPLabs@groups.io Notification <noreply@groups.io> wrote:



Jim Strohm <jim.strohm@...> added folder /Cheap HB dummy load


Re: 160m WSPR worked great for me on 1.09 firmware overnight

Hans Summers
 


RIT, VFO A, B and which VFO is current, as well as RIT in 4.2, are all parameters which ahould be thought of as default start-up parameters used in power-up. 

And the "Save settings" action is more of a "Save state" thing that really writes the current state of the VFO, RIT and Speed to those default setting menu items for loading at start-up. 

Those menu items could indeed be dropped. The underlying saved values would still need to be there as would "Save settings" or "Save state" as maybe it should be renamed. 

It's quite a drastic action and I don't feel like I'm quite ready for it... I'll have to sleep on it some. 

73 Hans G0UPL
http://qrp-labs.com


-------- Original message --------
From: mike/w1mt <w1mt.qrp@...>
Date: Mon, Feb 14, 2022, 9:30 PM
To: QRPLabs@groups.io
Subject: Re: [QRPLabs] 160m WSPR worked great for me on 1.09 firmware overnight
I would go so far as to suggest that menu 4.2 is superfluous and could be deleted thereby saving a few more bytes for other stuff. :)

mike/w1mt

On Mon, Feb 14, 2022 at 12:47 PM Julian N4JO <n4jo@...> wrote:

Hi Hans,

No, not  at all: everything you just typed (and what is in the manual) matches what I observe. What I found misleading is that I expected that any change I made to the setting in 4.2 to be saved on "Save Settings", but it isn't. If I change key speed in 4.2, exit the menu, and re-enter, my change looks like it's there, but if I "Save Settings" and go back into 4.2, what is actually in there is what was previously set using a single press of the left button, which is not the focus of the change I just attempted to make.

In other words, i.m.o. having the ability to change keyer speed in 4.2 is misleading if that value is never retained on "Save Settings". I would have expected that value - given that it is in a menu and editable - to be saved on "Save Settings" (which it isn't), and I would not have expected it to be overridden by the current value on "Save Settings" (which it is). I notice that "Save Settings" saves the current VFO settings too, so your philosophy is consistent, though you have the additional complexity of presets to deal with there.

The reason this came up at all is that when I return a unit to a customer, I go through the menus, reset everything to reasonable/your default values (and replacing my call and Maidenhead Locator with those of my customer in the beacon settings for their convenience, for example), and do a "Save Settings". That includes setting the keyer speed back at 12 WPM (or whatever they had it set to, if I remember), because when I test, I test at my preferred speed, which is 18 WPM. After doing a box-up and re-test, it surprised me that the boot-up keyer speed was back to 18 again, even though I thought I had set it to 12 while going through the menus.

I'm not arguing that it's wrong, it's just the way I think of it, that's all. (I think of the single button press value as being volatile in both ways: to be reset upon boot, and not to be saveable.)  I guess I just don't remember  it being the way it is... not that that means anything ;-)

No worries: if it behaves the way you intended, and it works in 1.08+ the way it always has, I have no issue.

 

--
Julian, N4JO.

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