Date   

Re: Running One Watt on Purpose

Don VE3IDS
 

George
A couple other tidbits came to mind. I have worked the Russian Antarctica base and also the Russian airbase there both on QRP from here in Canada. That was fun! Also back in 1979 I built a"sardine sender" that was in QST. It ran about 1/2 watt on 80 and I had 15 states and three provinces confirmed with that little novelty rig. You will have alot of fun with QRP I am sure. 
72 Don ve3ids

On Fri., May 15, 2020, 12:53 p.m. George Korper, <georgekorper@...> wrote:
Jack, I was looking for the shot in the arm. These comments are working me out of a rut.
I got nothing but time, so patience should be easier. 

On Fri, May 15, 2020 at 12:35 PM jjpurdum via groups.io <jjpurdum=yahoo.com@groups.io> wrote:
Skip:

I was almost inactive while I was working, but when I retired, I became more active. I had a GT550 xcvr running about 500W and,even with a crap antenna, making QSO's was pretty easy. Also, When I got my General in 1955 after operating as a CW-only Novice, I vowed "Never CW again!" and I pretty much stuck to that. However, I "discovered" QRP when I retired and started using low power CW...again! Don't know what it is about running a few watts and making contacts thousands of miles away that gives me so much pleasure, but I wish I could convey it to those who don't know or use CW. For the Been-there-done-that crowd, they should give QRP CW a shot...it's a real shot in the arm!

Jack, W8TEE



On Friday, May 15, 2020, 12:14:35 PM EDT, Skip Davis via groups.io <skipnc9o=yahoo.com@groups.io> wrote:


George I have run at 2 watts out for years into a 40 meter dipole with TV twinlead feeder and loaded on other bands with a tuner and it worked great. As others have pointed out much of the time the other stations don’t know the difference. I achieved WAS and DXCC without trying hard and even made contacts during contests. Cracking pileups with a couple of watts is quite a thrill but Also having a comfortable QSO is rewarding too.

What operating at this power level will do for you is sharpen your operating skills. Just in the last year I acquired a high power amp (1kw) to use mostly for nets operating, and I’ve got to tell you after a week of using it with my wire antennas to make contacts it was point and shoot contact made in pileups. After a week the fun was gone, it became too easy.....so back to QRP or a lot lower power for me. I run about 20 watts CW so that is where the 50 watt amplifier comes into play. If the other station is struggling I will up my power otherwise I keep on going.
Have fun and be patient.

72/73
Skip Davis, NC9O



Re: QCX-SSB: SSB with your QCX transceiver

Hans Summers
 

Hi Jack
 
There is no bootloader. He had to trash that when he started adding all of those features to the QCX. I've had really good luck flashing the software using Arvdudess under Windows using an Uno as host.

No so, OM. There never was any bootloader, right from the start. QCX has nothing to do with Arduino. I started from a completely blank chip, as purchased, no bootloader. Nothing Arduino related, and nothing Arduino has ever been on the chip or part of the program. It wasn't that I had a bootloader in the first place and later trashed it. Arduino just was never part of the picture in the first place. 

Note that in my QCX+ video https://www.youtube.com/watch?v=jdnZsfU7r-s during my QSO in the last part of the video, you CAN see an Arduino Uno in the background at the right! I was using it in this case, as a 38400 baud serial to USB converter, for testing CAT (on a different QCX). 

The reason for not using the Arduino is partly because Arduino adds a certain amount of bloat, which would reduce the code space available for the QCX firmware. But also because the Arduino uses some AVR peripherals itself, for its own purposes. Such as timers and interrupts to implement the microseconds and milliseconds elapsed functions. QCX has a pretty large amount of functionality packed in and I every single I/O pin is in use, all three timers and their associated overflow interrupts, output compare A and B channels etc., are all in use. Etc. etc. I just have no reason to fight with the Arduino IDE over these precious resources, I can do without the headache. 

I have nothing against the Arduino and I applaud the way it has introduced millions of makers around the world to programming. It has lowered the financial and learning barriers to entry in an amazing way. Many people got started in Arduino and later made their way into more advanced processors and programming applications. 

But in my case, I just somehow came from the other direction. I started with BASIC and machine code on home computers in the 80's. Later I worked in IT for 22 years in banks, with various programming languages, before getting dragged into management and finally escaping. I worked on really enormous systems, supercomputers with 5,000, 10,000 CPU nodes in parallel, pricing exotic derivatives trading risk. Then I programmed AVRs in assembler, and later in C. I just came here from the opposite direction, so I have no particular motivation to dabble with Arduinos. Just the way it turned out, in my case. 

I do use my ancient first edition Arduino Uno for different purposes, whenever I need to get data in and out of my PC, log something, control something easily, etc. Currently it just has a sketch on it to reflect 38400 baud serial data from the QCX CAT port to the PC USB and vice versa. On several occasions when my AVR programmer broke (no doubt due to overuse), it was useful to use the Arduino Uno as an AVR programmer using the provided ISP sketch. This is the sort of application I have always used it for. 

73 Hans G0UPL


Re: Running One Watt on Purpose

George Korper
 

Jack, I was looking for the shot in the arm. These comments are working me out of a rut.
I got nothing but time, so patience should be easier. 

On Fri, May 15, 2020 at 12:35 PM jjpurdum via groups.io <jjpurdum=yahoo.com@groups.io> wrote:
Skip:

I was almost inactive while I was working, but when I retired, I became more active. I had a GT550 xcvr running about 500W and,even with a crap antenna, making QSO's was pretty easy. Also, When I got my General in 1955 after operating as a CW-only Novice, I vowed "Never CW again!" and I pretty much stuck to that. However, I "discovered" QRP when I retired and started using low power CW...again! Don't know what it is about running a few watts and making contacts thousands of miles away that gives me so much pleasure, but I wish I could convey it to those who don't know or use CW. For the Been-there-done-that crowd, they should give QRP CW a shot...it's a real shot in the arm!

Jack, W8TEE



On Friday, May 15, 2020, 12:14:35 PM EDT, Skip Davis via groups.io <skipnc9o=yahoo.com@groups.io> wrote:


George I have run at 2 watts out for years into a 40 meter dipole with TV twinlead feeder and loaded on other bands with a tuner and it worked great. As others have pointed out much of the time the other stations don’t know the difference. I achieved WAS and DXCC without trying hard and even made contacts during contests. Cracking pileups with a couple of watts is quite a thrill but Also having a comfortable QSO is rewarding too.

What operating at this power level will do for you is sharpen your operating skills. Just in the last year I acquired a high power amp (1kw) to use mostly for nets operating, and I’ve got to tell you after a week of using it with my wire antennas to make contacts it was point and shoot contact made in pileups. After a week the fun was gone, it became too easy.....so back to QRP or a lot lower power for me. I run about 20 watts CW so that is where the 50 watt amplifier comes into play. If the other station is struggling I will up my power otherwise I keep on going.
Have fun and be patient.

72/73
Skip Davis, NC9O



Re: Low Pass Filter (dimensions)

 

On Fri, May 15, 2020 at 11:18 AM, Ted 2E0THH wrote:

"Something every "old" pilot checks quite carerfully, especially when flying an unfamiliar aircraft.  "

Yes indeed - especially after a "operator error" incident (one is usually all it takes).

Back before kids, when I had some money to burn in a rented Cherokee, I was flying south over Milwaukee to home field "Charlie eight-niner" C89, Sylvania WI, on the west side of Racine. I was so in awe of night VFR - the lights and such - that I forgot to switch tanks to balance fuel consumption (Cherokees are real, low-wing aircraft, and don't gravity-mix like those Cessna toys ;-) (kidding!) ). Engine stopped. Didn't take me long to figure out what I'd done wrong, switch tanks, and crank it back up again, but for those two seconds...
Of course, I was on the return leg, so both tanks were getting low. Had they been more full, the weight imbalance would have been a real clue, and I also would have been fresher. It's usually the concurrence of two or more unusual circumstances that causes the accident.

"The best techniques are passed on by the survivors." - Gaiden Shinji, Blademaster. (The Elder Scrolls: Arena)


Re: Running One Watt on Purpose

George Korper
 

Thanks Skip, I can't wait to start.
Thinking I won't make a contact was my problem. Now that was silly!

On Fri, May 15, 2020 at 12:13 PM Skip Davis via groups.io <skipnc9o=yahoo.com@groups.io> wrote:
George I have run at 2 watts out for years into a 40 meter dipole with TV twinlead feeder and loaded on other bands with a tuner and it worked great. As others have pointed out much of the time the other stations don’t know the difference. I achieved WAS and DXCC without trying hard and even made contacts during contests. Cracking pileups with a couple of watts is quite a thrill but Also having a comfortable QSO is rewarding too.

What operating at this power level will do for you is sharpen your operating skills. Just in the last year I acquired a high power amp (1kw) to use mostly for nets operating, and I’ve got to tell you after a week of using it with my wire antennas to make contacts it was point and shoot contact made in pileups. After a week the fun was gone, it became too easy.....so back to QRP or a lot lower power for me. I run about 20 watts CW so that is where the 50 watt amplifier comes into play. If the other station is struggling I will up my power otherwise I keep on going.
Have fun and be patient.

72/73
Skip Davis, NC9O




Re: QCX+ video

Roger Hill
 

No sweat!
Roger

On 15 May 2020, at 12:47, Hans Summers <hans.summers@...> wrote:
Hi Roger

Yes, it IS mirrored. That's because I pressed the button on my phone camera to make it take a selfie video rather than shoot video from the rear camera. I forgot that the selfie camera mirrors the image. I'm not going to re-edit the whole video now over this small detail :-/ 

73 Hans G0UPL

On Fri, May 15, 2020 at 7:45 PM Roger Hill <rhill@...> wrote:

Hi Hans.

At 00.24 in, everything looks like it is mirrored...

Roger

G3YTN

---
***************************
Roger Hill
***************************


On 2020-05-15 12:38, Hans Summers wrote:

Hi all
 
I made a video about QCX+ see https://www.youtube.com/watch?v=jdnZsfU7r-s
 
For the purposes of demonstration I switched on and immediately heard a CQ from Igor RX3Q and worked him on video... but, I had forgotten to switch on the CW decoder and real time clock etc., so I felt I wanted to make another video to demonstrate the situation properly... I heard Giuseppe IK0FNH calling CQ on 14020 right after switching on, answered him and had a nice QSO. You can see the QSO starting at about minute 17 in the video. 
 
73 Hans G0UPL


Re: QCX-SSB: SSB with your QCX transceiver

jjpurdum
 

There is no bootloader. He had to trash that when he started adding all of those features to the QCX. I've had really good luck flashing the software using Arvdudess under Windows using an Uno as host.

Jack, W8TEE

On Friday, May 15, 2020, 12:29:17 PM EDT, Steve CT7ANL/G1WMD [QRPLabs] <steve-qrplabs@...> wrote:



On 5/15/20 2:46 PM, Kenneth Delap via groups.io wrote:
> detailed in Manuel's build manual. Just could not get the chip to take
> the sketch. Was pretty stumped but got to thinking had ordered some


I don't believe Hans uses an Arduino-style bootloader on the micro he
supplies which is why you couldn't flash it using that method.

Steve




Re: QCX Menu setting 9.2

David G4DMG
 

Thank you Ted and Randy.  The manual isn't that clear on the use of this jumper, but I jumpered pins 1 and 3 and got a reading on 9.2 of 1.85 watts.

David
G4DMG


Re: QCX+ video

Hans Summers
 

Hi Roger

Yes, it IS mirrored. That's because I pressed the button on my phone camera to make it take a selfie video rather than shoot video from the rear camera. I forgot that the selfie camera mirrors the image. I'm not going to re-edit the whole video now over this small detail :-/ 

73 Hans G0UPL

On Fri, May 15, 2020 at 7:45 PM Roger Hill <rhill@...> wrote:

Hi Hans.

At 00.24 in, everything looks like it is mirrored...

Roger

G3YTN

---
***************************
Roger Hill
***************************


On 2020-05-15 12:38, Hans Summers wrote:

Hi all
 
I made a video about QCX+ see https://www.youtube.com/watch?v=jdnZsfU7r-s
 
For the purposes of demonstration I switched on and immediately heard a CQ from Igor RX3Q and worked him on video... but, I had forgotten to switch on the CW decoder and real time clock etc., so I felt I wanted to make another video to demonstrate the situation properly... I heard Giuseppe IK0FNH calling CQ on 14020 right after switching on, answered him and had a nice QSO. You can see the QSO starting at about minute 17 in the video. 
 
73 Hans G0UPL


Re: QCX-SSB: SSB with your QCX transceiver

Hans Summers
 

Hi Steve

Correct! No QRP Labs firmware has anything to do with Arduino. It is just a common misconception, based on the fact that the Arduino Uno and QCX, Ultimate3S, VFO and Clock kits all use the same ATmega328 processor. But there is no other similarity. My Arduino Uno has a 5V regulator chip on it too but that doesn't mean that anything with a 5V regulator chip is an Arduino... 

QCX has no bootloader. All 32KBytes flash are used by the program. 

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


On Fri, May 15, 2020 at 7:28 PM Steve CT7ANL/G1WMD [QRPLabs] <steve-qrplabs@...> wrote:

On 5/15/20 2:46 PM, Kenneth Delap via groups.io wrote:
 > detailed in Manuel's build manual. Just could not get the chip to take
 > the sketch. Was pretty stumped but got to thinking had ordered some


I don't believe Hans uses an Arduino-style bootloader on the micro he
supplies which is why you couldn't flash it using that method.

Steve




Re: QCX+ video

Roger Hill
 

Hi Hans.

At 00.24 in, everything looks like it is mirrored...

Roger

G3YTN

---
***************************
Roger Hill
***************************


On 2020-05-15 12:38, Hans Summers wrote:

Hi all
 
I made a video about QCX+ see https://www.youtube.com/watch?v=jdnZsfU7r-s
 
For the purposes of demonstration I switched on and immediately heard a CQ from Igor RX3Q and worked him on video... but, I had forgotten to switch on the CW decoder and real time clock etc., so I felt I wanted to make another video to demonstrate the situation properly... I heard Giuseppe IK0FNH calling CQ on 14020 right after switching on, answered him and had a nice QSO. You can see the QSO starting at about minute 17 in the video. 
 
73 Hans G0UPL


Re: QCX CAT on Rev T.05 not working but OK on Rev T.04 #cat #mods #solution

Hans Summers
 

Hi Bernie

I'm surprised the totally different voltage levels of RS232 worked at all... the QCX should definitely always be used with 5V TTL logic serial data. 

T1.05 changed the baud rate to 38400 partly because at 9600 baud if the CAT port was very busy, it just about started to worry me that it could cause marginally noticeable delays on the display update. The QCX has no problem at 38400 baud. 

73 Hans G0UPL

On Fri, May 15, 2020 at 7:35 PM Ham Radio <bernard.murphy@...> wrote:

The QCX CAT interface using a TTL to RS-232 converter will not run above 9600 bps.

I suspect that the higher speed on Rev T.05 is too fast when using a RS-232 to TTL converter.  Probably just fine with a USB to TTL converter.

The QCX is unable to decode characters at 30,400 bps - I have a 20 foot RS-232 cable which could be causing the problem or perhaps 30,400 is just too fast for the firmware to decode at that speed.

The symptom is the QCX immediately respond with ?; when *any* valid character is inputted using Rev T.05

Took a while to figure this out  ...

--
73, Bernie, VE3FWF


QCX+ video

Hans Summers
 

Hi all

I made a video about QCX+ see https://www.youtube.com/watch?v=jdnZsfU7r-s

For the purposes of demonstration I switched on and immediately heard a CQ from Igor RX3Q and worked him on video... but, I had forgotten to switch on the CW decoder and real time clock etc., so I felt I wanted to make another video to demonstrate the situation properly... I heard Giuseppe IK0FNH calling CQ on 14020 right after switching on, answered him and had a nice QSO. You can see the QSO starting at about minute 17 in the video. 

73 Hans G0UPL


Re: QCX/QCX+ Serial number 10,000 auction for fun

Michael N6MST
 

On Fri, May 15, 2020 at 08:54 AM, Hans Summers wrote:
QCX/QCX+ sales just passed the 10,000 number.
I'm sure this is practically impossible to know, but has any QRP kit radio ever done this? Maybe HW-8? Truly impressive, Hans!


QCX CAT on Rev T.05 not working but OK on Rev T.04 #cat #mods #solution

 

The QCX CAT interface using a TTL to RS-232 converter will not run above 9600 bps.

I suspect that the higher speed on Rev T.05 is too fast when using a RS-232 to TTL converter.  Probably just fine with a USB to TTL converter.

The QCX is unable to decode characters at 30,400 bps - I have a 20 foot RS-232 cable which could be causing the problem or perhaps 30,400 is just too fast for the firmware to decode at that speed.

The symptom is the QCX immediately respond with ?; when *any* valid character is inputted using Rev T.05

Took a while to figure this out  ...

--
73, Bernie, VE3FWF


Re: Running One Watt on Purpose

jjpurdum
 

Skip:

I was almost inactive while I was working, but when I retired, I became more active. I had a GT550 xcvr running about 500W and,even with a crap antenna, making QSO's was pretty easy. Also, When I got my General in 1955 after operating as a CW-only Novice, I vowed "Never CW again!" and I pretty much stuck to that. However, I "discovered" QRP when I retired and started using low power CW...again! Don't know what it is about running a few watts and making contacts thousands of miles away that gives me so much pleasure, but I wish I could convey it to those who don't know or use CW. For the Been-there-done-that crowd, they should give QRP CW a shot...it's a real shot in the arm!

Jack, W8TEE



On Friday, May 15, 2020, 12:14:35 PM EDT, Skip Davis via groups.io <skipnc9o@...> wrote:


George I have run at 2 watts out for years into a 40 meter dipole with TV twinlead feeder and loaded on other bands with a tuner and it worked great. As others have pointed out much of the time the other stations don’t know the difference. I achieved WAS and DXCC without trying hard and even made contacts during contests. Cracking pileups with a couple of watts is quite a thrill but Also having a comfortable QSO is rewarding too.

What operating at this power level will do for you is sharpen your operating skills. Just in the last year I acquired a high power amp (1kw) to use mostly for nets operating, and I’ve got to tell you after a week of using it with my wire antennas to make contacts it was point and shoot contact made in pileups. After a week the fun was gone, it became too easy.....so back to QRP or a lot lower power for me. I run about 20 watts CW so that is where the 50 watt amplifier comes into play. If the other station is struggling I will up my power otherwise I keep on going.
Have fun and be patient.

72/73
Skip Davis, NC9O



Re: QCX-SSB: SSB with your QCX transceiver

Steve CT7ANL/G1WMD [QRPLabs]
 

On 5/15/20 2:46 PM, Kenneth Delap via groups.io wrote:
detailed in Manuel's build manual. Just could not get the chip to take
the sketch. Was pretty stumped but got to thinking had ordered some

I don't believe Hans uses an Arduino-style bootloader on the micro he supplies which is why you couldn't flash it using that method.

Steve


Re: Low Pass Filter (dimensions)

Ted 2E0THH
 

Thanks Don
Yes I am old enough to remember that!
The Air Accidents Investigation Branch (AAIB) reports here is littered with "fuel mismanagement" accidents relating to confusion over litres to gallon conversions..
Something every "old" pilot checks quite carerfully, especially when flying an unfamiliar aircraft.  
73s Ted
2E0THH


Re: QCX/QCX+ Serial number 10,000 auction for fun

Arv Evans <arvid.evans@...>
 

Hans

Congratulations on the 10,000th QCX.  

Arv
_._

On Fri, May 15, 2020 at 9:54 AM Hans Summers <hans.summers@...> wrote:
Hi all

Pleased to announce - QCX/QCX+ sales just passed the 10,000 number. An amazing landmark indeed. But S/N 10,000 is reserved for the auction :-)   Currently the high bid is J P Watters KC9KKO with US$200 but it is NOT going going gone yet... 

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

On Fri, May 15, 2020 at 11:50 AM Hans Summers via groups.io <hans.summers=gmail.com@groups.io> wrote:
Hi JP: I never said anything about charity! The charity is the save-the-Hans fund. Or save-the-QRP-Labs-lab-rats. Something like that? 

Hi Mike: thanks for the congrats. Yes, now incl FedEx delivery :-) It didn't, before. Special promotion :-)

Hi Mark: I have updated the list of serial numbers vs order ID, see http://qrp-labs.com/qcx/qcxserial.html - so look up your order ID and then find it in the table. Or contact me if you can't find it. 

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


Re: Running One Watt on Purpose

Skip Davis
 

George I have run at 2 watts out for years into a 40 meter dipole with TV twinlead feeder and loaded on other bands with a tuner and it worked great. As others have pointed out much of the time the other stations don’t know the difference. I achieved WAS and DXCC without trying hard and even made contacts during contests. Cracking pileups with a couple of watts is quite a thrill but Also having a comfortable QSO is rewarding too.

What operating at this power level will do for you is sharpen your operating skills. Just in the last year I acquired a high power amp (1kw) to use mostly for nets operating, and I’ve got to tell you after a week of using it with my wire antennas to make contacts it was point and shoot contact made in pileups. After a week the fun was gone, it became too easy.....so back to QRP or a lot lower power for me. I run about 20 watts CW so that is where the 50 watt amplifier comes into play. If the other station is struggling I will up my power otherwise I keep on going.
Have fun and be patient.

72/73
Skip Davis, NC9O