Date   
Re: Need advice on battery icon

James Daldry W4JED
 

On 6/18/19 3:42 PM, James Daldry W4JED wrote:

Hi, Peter

Yes, it's from pins 1 to 3. I used 2 matching female connectors for my jumper so I could yank it off if I really needed to use the builtin dvm function. Like I don't already have 3 dvm's kicking around the bench. But you never know. You might be at field day and nobody has a dvm handy.

73

Jim W4JED

On 6/18/19 3:05 PM, Peter GM0EUL wrote:
You have to set a jumper on the board, it's the three pins near the power input, I think it's 1 to 3 to get the battery meter to work.  It's in the manual somewhere but I can't look just now
73
Peter GM0EUL

Re: Need advice on battery icon

James Daldry W4JED
 

Hi, Peter

Yes, it's from pins 1 to 3. I used 2 matching female connectors for my jumper so I could yank it off if I really needed to use the builtin dvm function. Like I don't already have 3 dvm's kicking around the bench. But you never know. You might be at field day and nobody has a dvm handy.

73

Jim W4JED

On 6/18/19 3:05 PM, Peter GM0EUL wrote:
You have to set a jumper on the board, it's the three pins near the power input, I think it's 1 to 3 to get the battery meter to work.  It's in the manual somewhere but I can't look just now
73
Peter GM0EUL

Re: Need advice on battery icon

Kārlis Goba
 

And definitely set the voltage range you want to display. Depends on your batteries. For 4x LiFePo4, I have found the following settings helpful:

7.3. Batt. full 13,500 (13.5V)
7.4. Batt. step 0,500 (0.5V)

For 3x LiIon/Lipo, 4x LiIon/LiPo or SLA you have to find different settings.

--
Karlis YL3JG

Re: Need advice on battery icon

Peter GM0EUL
 

You have to set a jumper on the board, it's the three pins near the power input, I think it's 1 to 3 to get the battery meter to work.  It's in the manual somewhere but I can't look just now
73
Peter GM0EUL

Re: Need advice on battery icon

Alan de G1FXB
 

John,
Have you followed the instructions stating steps 7.2 -> 7.4 on page 98 of the manual

Regards Alan

On 18/06/2019 19:47, John wrote:

Hi all and first let say all is well with my rig. The old operator error J

?

I turned on the battery icon to display on the screen and it does. My problem is I can?t seem to get the actual battery status to show, only an empty icon. Other than that all is well.

?

73 John K2JHU?


Re: Need advice on battery icon

Ronald Taylor
 

You have to wire the volt meter input pin to the power input line of the rig. Very short jumper soldered to the bottom of the board does the trick. 

Ron

On Tue, Jun 18, 2019 at 11:59 Don Huffstetler via Groups.Io <wa6ouw=aol.com@groups.io> wrote:
I have the same problem...................

wa6ouw
Don, Redding, Ca




-----Original Message-----
From: John <johnk2jhu@...>
To: QRPLabs <QRPLabs@groups.io>
Sent: Tue, Jun 18, 2019 11:48 am
Subject: [QRPLabs] Need advice on battery icon

Hi all and first let say all is well with my rig. The old operator error J
 
I turned on the battery icon to display on the screen and it does. My problem is I can’t seem to get the actual battery status to show, only an empty icon. Other than that all is well.
 
73 John K2JHU…

QRPLabs Arduino Shield and GPS calibration help needed.

m0bmn
 

Hi Guys

Anyone have a sketch file for use with the QRPLabs Arduino shield and the QRPLabs OXCO module that operates QRSS CW (FSKCW ) that makes use of the QRPlabs GPS module for frequency calibration after each transmission, I am trying to include This GPS calibration in my homebrew mept using the shield but not having any luck coding for the GPS bit.

Many Thanks

Paul M0BMN

 

Sent from Mail for Windows 10

 


Virus-free. www.avast.com

Re: Need advice on battery icon

Don Huffstetler <wa6ouw@...>
 

I have the same problem...................

wa6ouw
Don, Redding, Ca




-----Original Message-----
From: John <johnk2jhu@...>
To: QRPLabs <QRPLabs@groups.io>
Sent: Tue, Jun 18, 2019 11:48 am
Subject: [QRPLabs] Need advice on battery icon

Hi all and first let say all is well with my rig. The old operator error J
 
I turned on the battery icon to display on the screen and it does. My problem is I can’t seem to get the actual battery status to show, only an empty icon. Other than that all is well.
 
73 John K2JHU…

Need advice on battery icon

John
 

Hi all and first let say all is well with my rig. The old operator error J

 

I turned on the battery icon to display on the screen and it does. My problem is I can’t seem to get the actual battery status to show, only an empty icon. Other than that all is well.

 

73 John K2JHU…

Re: ForSale: QCX 3D printed cabinet #case

ralf.rosche@...
 

25 Euros plus shipping

Re: U3B-25 balloon completes its 8th circumnavigation!

 

On Sun, Jun 16, 2019 at 12:14 PM, Hans Summers wrote:
Currently not... but there are two GPS status bits which in practice are always both 1 or both 0. So one of these is superfluous and I will repurpose as an additional bit. That can then be used to identify a third (or more) type of telemetry message conveying additional data. 
Yes that would work nicely. 
 
 
Even if not - yes you can at your discretion, populate the telemetry data with sensor data of your own, at different times per hour, and interpret the data as you wish, with your knowledge of what you have programmed it to and at what time.
 
So for example - one thing Dave VE3KCL and I are very interested to get, is a temperature report of the temperature both inside the enclosure, and outdoors in the fresh air. There's an onboard LM75 chip (digital temperature sensor). But an I2C bus so it is possible to connect additional LM75's (up to 8 in total) in parallel. So we will be able to report internal and external temperature in alternating transmission slots.
That would be a simple way to get both inside and outside temps. As I previously noted,  the precise timing of WSPR makes it easy to multiplex telemetry within the time domain.
 
 
73 Hans G0UPL 
Michael VE3WMB

P.S. It was great to see a note about the U3B in the latest QRP-LABS newsletter. Certainly the success of Dave's U3B-25 is a good indicator that the hardware and firmware are stable
and ready for prime-time. 

P.P.S. Hans, congratulations on the CW OPS award ! It is well deserved.  I am thinking about finally getting started on my QCX-60 build 
(I have a QCX-40 also on its way) so I have just started looking at the QCX manual, and the quality and detail far exceeds anything I have seen before and
I have built a lot of QRP rigs from kit. 
 
 

Re: Bias on the U3S ouput stage question

Chris Wilson
 

Hello Allison,

Thanks for the heads up, understood, cheers.

Sunday, June 16, 2019




Best regards,
Chris 2E0ILY mailto:chris@...


aK> For digital modes most, but far from all, are class C, D or E.

aK> The biggest fet a a BS170 can drive is an ambiguous question.
aK> Assuming you are getting 300mW of output the largest fet would
aK> produce as much as 3 to 6W is properly matched and an
aK> IRF510 or 530 can do that. It really depends on how much
aK> drive you can have as the gain of most of the IRF MOSfets
aK> is about 13-16DB.

aK> FYI if you willing to spend a lot of money you can use UHF RF
aK> rated mosfets like MRF137 which will have 20db or so gain
aK> at 10mhz. Very good construction and all good care plus
aK> a 28V power source will be required. Its a 30W output device.

aK> Allison



--
Best regards, Chris Wilson (2E0ILY)

Re: ForSale: QCX 3D printed cabinet #case

Werner Nunweiler
 

Hallo OM Ralf,
 
ich habe interesse, was soll es kosten?
 
73 de Werner DL1RTD
 
Gesendet: Dienstag, 18. Juni 2019 um 10:47 Uhr
Von: ralf.rosche@...
An: QRPLabs@groups.io
Betreff: [QRPLabs] ForSale: QCX 3D printed cabinet #case
I made 2 of them, needed only one. It is made from PET not PLA, PET is much stronger and more heat resistant (sun) :-)
Make an offer including shipping from germany.


Re: 5W PA w/ raised cosine issue

Bernhard Lueck
 

Hi all,

strange. I flashed the most recent FW 3.12a for the U3S and tested today before my vacation. CW, Hell and HELL DX (and other modes) are ok. all seems to be perfect. But on SLOW HELL there is again, measured at the Power Modulator output (PA Supply), a 1ms voltage drop to 0 right before the falling edge. ???

Bernhard

QRP Labs June 2019 newsletter

Hans Summers
 

You can read this newsletter online at http://qrp-labs.com/newsjun2019.html .

A short newsletter this month as time is forever short and I leave for Friedrichshafen early tomorrow morning, lots to do... this newsletter is also supplemented by the Dayton FDIM/Hamvention 2019 report at http://qrp-labs.com/dayton2019.html.

1. QRP Labs at Friedrichshafen HAM Radio, 21-23rd June
2. QRP Labs Hans G0UPL receives CW Ops award
3. Dayton (Xenia) FDIM/Hamvention, 16-19 May 2019
4. Balloon flights update: final flight tests of QRP Labs tracker
5. Social media, Feedback, unsubscribing


1. QRP Labs at Friedrichshafen HAM Radio, 21-23rd June

QRP Labs will be exhibiting at the HAM Radio hamfest in Friedrichshafen, Germany on 21, 22 and 23rd June. The booth is in the main A1 exhibition hall and very close to the entrance doors, a great location (ahem, not like at Dayton!). So be sure to visit QRP Labs first, just steer right a bit after you come through the entrance!

A good selection of most of the QRP Labs range of kits will be on hand to purchase and/or admire as usual. Or just stop by and chat! 


2. QRP Labs Hans G0UPL receives CW Ops award

It was my great honour to attend the awards banquet of the CW Ops club at Dayton on Thursday 16-May-2019 and receive the CW Ops award, in recognition of outstanding achievement in advancing the art of CW. 

As I keep saying, I'd never qualify for entry into CW Ops club as my CW is just nowhere near fast enough (25wpm is needed)... I spend too much time designing and developing, and not enough time on air. So I was initially feeling intimidated but esteemed CW Ops members were very welcoming, and I was soon feeling relaxed (and well fed). I felt inspired to try and improve my CW; after not getting on air at all for a single QSO during 2018, I started a New Year 2019 resolution with the target to average at least 1 QSO per day during the year. So far I am at 278 QSOs year to date, all CW with the QCX - from Japan to US and all over Europe. So my skill is gradually improving. 

The award was given in recognition of the contributions to CW made by the QCX 5W CW Transceiver kit, which at only $49 and with its high performance and host of features, has encouraged many new people to try CW for the first time; and indeed some have even started their entry into the amateur radio hobby due to this kit. The QCX kit continues to be very popular, from the launch in August 2017 to date, a total of 7,610 QCX kits have been sold! 

The CW Ops club June issue of their newsletter "Solid Copy" is now published,and includes four mentions of Hans G0UPL in connection with the award and hamvention, on pages 3, 28, 31 and 35 (Thanks to Peter GM0EUL for pointing this out). You can download the newsletter, without being a member, at https://cwops.org/wp-content/uploads/2019/06/solid-copy-2019.06.1.pdf. The very well-trained eye could even spot me in the photos of the awards banquet at Spaghet ti Warehouse, on pages 25 and 32 but we're really only talking about a narrow slice of the top of my head here. 

Many thanks again to the CW Ops club, it is really an honour and an inspiration to receive the award. 


3. Dayton (Xenia) FDIM/Hamvention, 16-19 May 2019

I had a fantastic time as usual at the Dayton FDIM/hamvention, with David VE3KCL manning the QRP Labs booth with me (THANKS Dave!). 

I presented an FDIM seminar on Thursday 16-May-2019, on the topic of the forthcoming QSX all-band all-mode transceiver design. Vendors' evening was busy on the Thursday evening, then 3 days of hamfest craziness. 

For more on Dayton 2019, please see this article http://qrp-labs.com/dayton2019.html where you can:

  • Download the FDIM presentation slides, and the accompanying 34-page article for the conference proceedings book
  • Link to the Ham Radio Workbench podcast, where you can listen to the audio recording of my presentation
  • More photos of the CW Ops award for advancing the art of CW (see above)
  • Photos from FDIM vendor's night and the QRP Labs booth at the hamvention
  • YouTube video interview with Faith Hannah KD3Z of Ham Radio (dot) World http://hamradio.world/ 
  • YouTube video interview with Frank KB4VU of the ICQ Podcast https://www.icqpodcast.com/ 


4. Balloon flights update: final flight tests of QRP Labs tracker

Following a lot of late night discussions (err, and early morning, all day, etc) between Dave VE3KCL and Hans G0UPL at Dayton in May, we'll make a final push to get the QRP Labs High Altitude Balloon tracker into production. This development has been going on for several years and often takes a back seat to more urgent kit developments; but it's time to get it finished now. 

Right, this is a photo of the latest (and hopefully FINAL) prototype which will fly shortly. The protrusion from the board at the top is a micro-USB socket for configuration, and can be snapped off for weight-saving just prior to the flight. 

The PCB is 1.3 x 0.97 inches (33 x 25mm) excluding the USB socket section. The final production module will be considerably smaller, but this one is sized like this to make it easier to build and handle by humans! 

U3B25 by Dave VE3KCL

U3B25 was launched by Dave VE3LCL on 28-Feb-2019 and just never ends! This is a prototype test flight of the QRP Labs tracker.

U3B25 has now completed 8 laps of our planet, and is proceeding along merrily on its 9th lap. It has traveled 334,000km at an altitude just under 12,000m, flying now for 3.5 months. During all this time the hardware and firmware have performed flawlessly every day, never a single glitch. 

  • BLUE: Lap #1
  • RED: Lap #2
  • YELLOW: Lap #3
  • PALE BLUE: Lap #4
  • PINK: Lap #5
  • LIGHT BLUE: Lap #6
  • GREEN: Lap #7
  • DARK PINK: Lap #8
  • ORANGE: Lap #9 (ongoing)

For more details and live tracking, see: http://qrp-labs.com/flights/u3b25 

U3B26 by Dave VE3KCLU3B26 completed a circumnavigation of the world too, landing on its 14th day in Iran. See http://qrp-labs.com/flights/u3b26 

U3B27 by Dave VE3KCL: U3B27 contained some important experimental changes designed to improve the endurance of the tracker after sunset. Typical flights lose power an hour after sunset (or more accurately, an hour after the angle of the sunlight on the solar panels becomes too low to generate sufficient power). At this time there are two problems: 

  • Lack of battery capacity to power the transmitter
  • Temperature drops too low for the battery to work anyway

So U3B27 used a larger, 150mAh LiPo battery and a much larger enclosure, filled with aerogel insulation. The increased insulation maintains the temperature inside the box about 15C over ambient temperature. We observed that the flight continued transmitting each night for 4 hours after solar power ceased. It is nice to see the smoother looking track, because the night-time gaps in tracking are so much shorter. On some of the days U3B27 transmitted for 18 hours out of 24. The altitude (11,300) was a little lower due to the increased weight. U3B27 completed a circumnavigation but succumbed to high altitude icing on 08-Jun--2019. More details of U3B27 http://qrp-labs.com/flights/u3b27 

Stella 19 and Stella 20 by Dan DL6OW: Dan DL6OW has done well with his two most recent launches, Stella 19 on 09-Jun-2019 and Stella 20 on 12-Jun-2019. Despite some GPS issues on Stella 19 it has still reported intermittently, last heard from over southern Russia near the black sea. Stella 20's most recent report is from Mongolia on 17th June. See http://qrp-labs.com/flights/stella19 and http://qrp-labs.com/flights/stella20 for more details, photos and tracking of these flights by Dan DL6OW. 


5. Social media, feedback, unsubscribing

Social media: QRP Labs has the following presence on social media. If you use these social media then please join or follow QRP Labs! Announcements such as new products, balloon launches, etc., will be made first in these media!

1) QRP Labs groups.io discussion group https://groups.io/g/QRPLabs for discussion and support on all QRP Labs products
2) QRP Labs Facebook page https://www.facebook.com/QRPlabs/ 
3) QRP Labs is @qrplabs on Twitter https://twitter.com/qrplabs 
4) QRP Labs on YouTube https://www.youtube.com/c/QRPLabs 

Feedback: As always, please do write with any comments, ideas, criticism, feedback of any kind!

Unsubscribing: If you want to unsubscribe from this monthly newsletter, then either log in to your QRP Labs shop account and un-check your newsletter preference, OR, email and we'll take care of it. 

 

Vy 73 de QRP Labs

ForSale: QCX 3D printed cabinet #case

ralf.rosche@...
 

I made 2 of them, needed only one. It is made from PET not PLA, PET is much stronger and more heat resistant (sun) :-)
Make an offer including shipping from germany.


Re: It arrived

John
 

Practice mode is off. The current situation is that I am back on track. Frequencies set as: A 7.040.00, B 7.030.00. Now have output but low. Need to check my battery voltage. Will work on it today. Question…I see there is a Factory Reset on the Cheat Sheet no 7.8 with a caution. I’m thinking I may have to do this but the caution warning makes my nervous.

 

QCX 40 Headphone Noise #qcx

Peter GM0EUL
 

Hi Nick
It's there any chance that the noise could be external?  I haven't looked at the traces in detail but first impression is that I would be eliminating external sources of noise like the power supply, near by appliances, LED lights etc.  Are you running it on a PSU or a battery?  Try a battery if you aren't already.

It won't be silent but you should be hearing a white noise hiss not raspy sawtooth.

Did it align properly and does it receive and transmit as it should?

Oh, and welcome to the group.

73
Peter, GM0EUL

QCX-80m minor issue #alignment

ralf.rosche@...
 

Hi i have build the 80m version of the QCX
.
I have more than 5W power and could make the BPF Alignment (C1 correct) and I-Q, Hi and Lo minimum.
I was able to make some QS0s

My problem is that the BPF alignment is not very stable, that means the peak alters between 9 and 6 somewhat.
It looks like altering with 1Hz, from 9 to 7or six and back again. I have a dummy load connected during alignment. 

If  no antenna is connected, there is a lot of hum in the headphone. seems like a grounding problem. Sounds like an open amplifier Input.
I i touch the left opamp the hum increases.

Is this normal or is there something wrong?
 
Ralf 

Re: QCX 40 Headphone Noise #qcx

Alan G4ZFQ
 

The only problem I have noticed is that there is always noise in the earphones, and I am assuming they are supposed to be silent when you're not keying or receiving a signal.
Nick,

You should expect a hiss, noise. But you actually hear the tone you show? Does it receive OK?

I bought an oscilloscope to help trace out the problem, I have noticed is that the signals at T1 Pad 5 and Pad 8 are supposed to be 180 degrees out of phase, but mine are perfectly in sync.
Are you absolutely sure your scope is set correctly? Do you see the shift between CLK0 and CLK1? I do not think Hans uses the T1 pads.
If there is no cancelling you will receive the images as well. You will need to check the signal path

73 Alan G4ZFQ