Date   

Re: help !

John AK4AT
 

That's great Jay! Keep learning and tweaking and you'll get it all sorted out. Be sure to evaluate it all again when you run across a S9+ equivalent signal. I like working with headphones, but I also got one of these amplified Bluetooth speakers with an aux cable that are everywhere for about $10. It works quite nicely and saved my ears until I sorted everything out.


Re: QCX mini: RF output BNC or SMA #poll-notice

Graham, VE3GTC
 

This is has been an interesting discussion.

Besides SMA and BNC, the TNC and RCA connector has been mentioned but in reality there are many more good choices.

For example, the FME connector ( FME - For Mobile Equipment ), good to several GHz, PCB mount, bulkhead mount, size not too much bigger than RG-58 cable, and not very expensive.

There is also the mini UHF connector, also good to several GHz, PCB mount, bulkhead mount,.

cheers, Graham ve3gtc


On Fri, Aug 7, 2020 at 9:14 PM m0bmn via groups.io <m0bmn=yahoo.co.uk@groups.io> wrote:
Anything but SMA, i have broken to many of them! RCA is small which may help keep the size down, but BNC is well tested in this application. Either will fine by me.
73 Paul M0BMN


Re: Ultimate3S and using message Tag. #u3s

geoff M0ORE
 

I "think" you have to have the 1 PPS connected as well, not just the NEMA. I am sure others will confirm or rubbish this suggestion.

On 07/08/2020 19:23, Phil Crockford wrote:
I have a working Ulimate3S and am using it on wspr and CW.
I am using the massage entry in the system to determine the CW content.
I have a number of working GPS's that appears to work correctly and displays the current data on LCD display.
The only difference to the data display and the U3s documentation, regarding the GPS, is that the "3D,2D or none" that should be in the display of the GPS data is permanently "--". (and always has been form the time I purchased the GPS's). The GPS is one supplied by QRPLabs and I have 3 such GPS's and they all provide the same "--" . 
The U3s calculates the Maidenhead correctly, which would indicate that the GPS unit and the U3s software is working ok.
I have entered the Tags in to the message entry window "#CS #M6"
The Morse comes out fine if I use Callsign and Maidenhead locator as above.
I now wish to add the Lat and Long to the Message and the system allows me to enter the Tags for it. "#CS #M6 #LT #LN" in the message.
When the U3s attempts to send the message it sends the Callsign and the Maidenhead locator ok but, appears to reject the Lat and Long data, and from what I can see it just displays a "--" momentarily on the LCD and the display then goes blank for a couple of seconds and then returns to the normal LCD.
I have tried putting the Lat and Long first "#LT #LN #CS #M6" but it then refuses to send any of the message.
I hope I have provided enough info to solicit some help
If it is because the NMEA string that provides the 2D,3D information if missing and that the U3s requires that data before it will send the Lat, Long.data, what do I need to correct the problem.

Phil G8IOA


Re: help !

ny2ny
 

IT WORKS !!
My problem was the sensitivity in Menu 8 was set too high - backed off the volume control and found all 3 minimum settings easily. Radio works well - about 3.5 watts out and receives ok .
Some other issues:
1) Seems to lack enough audio output. Volume control full up all the time. Maybe change some component to increase audio gain ? Add audio transformer to better match lo-Z earphones ?
2) Can not adjust the sidetone level - stays the same level no matter what setting I use.
3) What are the recommended nominal Decoder settings  ? Sometimes works FB and sometimes does not decode anything, maybe that's the best it can do ? Or should you adjust it for every received signal ?
4) Is there a way to get the display to read output power or at least indicate that it's transmitting during normal operation ? I guess I could add a jumper from L1 to the RF PWR  terminal and read it on menu 9 but then would have to switch to the Menu every time I transmit...
  Thanks for the help so far guys ...hope to make my first qso tonite !
               73 jay NY2NY


Re: QCX mini: RF output BNC or SMA #poll-notice

m0bmn
 

Anything but SMA, i have broken to many of them! RCA is small which may help keep the size down, but BNC is well tested in this application. Either will fine by me.
73 Paul M0BMN


Re: QCX mini: RF output BNC or SMA #poll-notice

namerati@...
 

How about MCX? Rated for 500 cycles... I have a DSO Quad pocket oscilloscope that uses them and they're pretty nice for quick setups.

On Fri, Aug 07, 2020 at 05:49:57PM +0000, Lee wrote:
I too vote RCA. Small, inexpensive, easy to fix if something goes wrong. 'Been using them for RF for nearly 60 years with fine success.
Absolutely not SMA!

-Lee- WA3FIY

------ Original Message ------
From: "Jim Mcilroy via groups.io" <gts53=btinternet.com@groups.io>
To: QRPLabs@groups.io
Sent: 8/7/2020 12:05:45 PM
Subject: Re: [QRPLabs] QCX mini: RF output BNC or SMA

Used to have a Heathkit 20m rig with an RCA connector. Ran 100W through it. Never had any problems.

An RCA phono would be a good choice also.

I am also a supporter of a BNC with SMA alternative PCB pad but I accept that might be awkward with a case end plate.

73 Jim G4EQX


On 7 Aug 2020, at 15:53, Kees T <windy10605@...> wrote:

Collins Radio thought RCA connectors with the little ceramic insulator inside were great and were 50 ohms......for desktop use only, however. No mechanical stress on the external cables.

73 Kees K5BCQ



Re: #qcx #qcx

m0bmn
 

Glad its working, sounds like it may be a bad/cold joint or so, double check the board with a magnifying  glass in good light and retouch any joints that look dry etc , but i am sure you know this anyway so i am sure you will sort it, i didnt think i was going to get mine working  but it was just a couple of simple ground shorts i had made being careless, now mine is working great  and i am sure yours will be too.
take care
73 Paul M0BMN


Re: QSO Today Virtual Ham Radio Expo - 08/09 August

Rick Williams - VE7TK
 

Well played Hans!!

Happy anniversary as well!!

73, Rick
VE7TK

--
73, Rick
VE7TK


Re: #qcx #qcx

rrossio@...
 

Thank you for the responses. For some reason the radio is now working fine with 4 watts output.
I am using my station power supply with 13.8 volts.
I checked internal voltage check points for power And RF and they were ok.
I will continue to test and look for cold Solder joints or loose connections.
made one QSO on 80 so far about 300 miles.
Rob N3EQ


Re: QCX+ 7805 problem

The Crunchbird
 

Here is the article for the milliamp meter, Dave. N2SN


Re: Encoder type/mfgr. QCX?

jjpurdum
 

Which library are you using? I've been using this one with the Bourns encoders without problem:

 https://github.com/buxtronix/arduino/blob/master/libraries/Rotary/

Jack, W8TEE


On Friday, August 7, 2020, 1:21:13 PM EDT, Jack Margolis <jackmargolis@...> wrote:


This morning, I used the encoder from an unbuilt QCX kit to replace a Bourns encoder that was incompatible with the rotary.h library that is found on GitHub.   The one from the kit worked fine but the Bourns encoder didn't work.  Now I would like to identify the one from the kit.  Mfgr. model, etc?.  It seems to have 20 clicks per rotation.   Any other advice on encoders would be greatly appreciated.    Over the years, I used the same Bourns encoder with several other Arduino scripts for VFOs but looking back on it, the ones that didn't use rotary libraries and the ones I had trouble with do.  
Thanks,  Jack  


Ultimate3S and using message Tag. #u3s

Phil Crockford
 

I have a working Ulimate3S and am using it on wspr and CW.
I am using the massage entry in the system to determine the CW content.
I have a number of working GPS's that appears to work correctly and displays the current data on LCD display.
The only difference to the data display and the U3s documentation, regarding the GPS, is that the "3D,2D or none" that should be in the display of the GPS data is permanently "--". (and always has been form the time I purchased the GPS's). The GPS is one supplied by QRPLabs and I have 3 such GPS's and they all provide the same "--" . 
The U3s calculates the Maidenhead correctly, which would indicate that the GPS unit and the U3s software is working ok.
I have entered the Tags in to the message entry window "#CS #M6"
The Morse comes out fine if I use Callsign and Maidenhead locator as above.
I now wish to add the Lat and Long to the Message and the system allows me to enter the Tags for it. "#CS #M6 #LT #LN" in the message.
When the U3s attempts to send the message it sends the Callsign and the Maidenhead locator ok but, appears to reject the Lat and Long data, and from what I can see it just displays a "--" momentarily on the LCD and the display then goes blank for a couple of seconds and then returns to the normal LCD.
I have tried putting the Lat and Long first "#LT #LN #CS #M6" but it then refuses to send any of the message.
I hope I have provided enough info to solicit some help
If it is because the NMEA string that provides the 2D,3D information if missing and that the U3s requires that data before it will send the Lat, Long.data, what do I need to correct the problem.

Phil G8IOA


Re: Encoder type/mfgr. QCX?

N3MNT
 

Extensive thread covering this topic yesterday. https://groups.io/g/QRPLabs/topic/qcx_replacement_encoder/28982990?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,0,28982990


Re: QCX mini: RF output BNC or SMA #poll-notice

Lee
 

I too vote RCA.  Small, inexpensive, easy to fix if something goes wrong.  'Been using them for RF for nearly 60 years with fine success.  Absolutely not SMA!
 
-Lee-    WA3FIY
 

------ Original Message ------
From: "Jim Mcilroy via groups.io" <gts53@...>
Sent: 8/7/2020 12:05:45 PM
Subject: Re: [QRPLabs] QCX mini: RF output BNC or SMA
 
Used to have a Heathkit 20m rig with an RCA connector. Ran 100W through it. Never had any problems.

An RCA phono would be a good choice also.

I am also a supporter of a BNC with SMA alternative PCB pad but I accept that might be awkward with a case end plate.

73 Jim G4EQX


On 7 Aug 2020, at 15:53, Kees T <windy10605@...> wrote:

Collins Radio thought RCA connectors with the little ceramic insulator inside were great and were 50 ohms......for desktop use only, however. No mechanical stress on the external cables. 

73 Kees K5BCQ


Encoder type/mfgr. QCX?

Jack Margolis
 

This morning, I used the encoder from an unbuilt QCX kit to replace a Bourns encoder that was incompatible with the rotary.h library that is found on GitHub.   The one from the kit worked fine but the Bourns encoder didn't work.  Now I would like to identify the one from the kit.  Mfgr. model, etc?.  It seems to have 20 clicks per rotation.   Any other advice on encoders would be greatly appreciated.    Over the years, I used the same Bourns encoder with several other Arduino scripts for VFOs but looking back on it, the ones that didn't use rotary libraries and the ones I had trouble with do.  
Thanks,  Jack  


Re: #qcx #qcx

m0bmn
 

Hi Rob
Can we take it that the RX side is working as it should and alignment went OK?
What sort of power supply are you using, its not current limiting is it, have you measured the supply current on RX and when you transmit.
73 for now
Paul


QSO Today Virtual Ham Radio Expo - 08/09 August

Hans Summers
 

Hi all

QRP Labs is one of the 45 exhibitors at the QSO Today Virtual Ham Radio Expo this weekend 08/09 August. https://qsotoday.vfairs.com/ . Apparently more than 21,000 visitors are registered at the event. 

The virtual fair platform has links to various QRP Labs documents, the QRP Labs shop, videos, etc. There is also a QRP Labs chatroom and it supports one-to-one chat via keyboard, voice or video. 

I have a ZOOM video meeting set up for the entire duration of the event so feel free to drop in there also. The details are at http://qrp-labs.com/zoom 

I intend to do a live Zoom video tour of the QRP Labs HQ (Lab/Office/Shack) on Saturday at 1800Z followed by a Q&A session at 1900Z (or whenever my tour finishes). The tour might be interesting to you or you might be bored out of your socks. I can show you around and about some of the behind-the-scenes process that makes QRP Labs work day to day. 

Of course this will not be like a real hamvention. Nobody really knows what to expect at this point. When I'm at a real hamvention I stand in the booth and enjoy meeting people, answering questions, chatting about this and that. And of course have some kits to sell. So perhaps this can be as similar as possible! Come and say hello, talk about whatever you like - either in a group or via one-to-one video etc. 

Note that in a somewhat careless oversight, and which was only realized at the last moment (yesterday), specifically, by the XYL... the QSO Today Expo organizers have chosen a date which clashes with my 12th wedding anniversary (tomorrow 8th August). In consideration of the fact that my timezone is UT+3 and most visitors will be from Europe and US and therefore after me... in order to appease the situation I will attempt to take the XYL out to a nice large breakfast and aim to be back in QRP Labs HQ at around noon local time (or maybe 1pm) which will be 09:00 UT (11am in Europe, 10am in UK, 5am on the US East coast etc etc.). Then I intend to stay online until sleep overcomes me... 

During some of the event I will also be joined in the booth by Dave VE3KCL who is known for all the collaboration with QRP Labs on high altitude ballooning, and my booth buddy at Dayton FDIM 2018 and 2019; Dave's current U4B9 flight has been up for almost 3 months and has just completed its third circumnavigation see http://qrp-labs.com/flights/u4b9 

Chris KC0TKS will also join as booth representative. 

There may be other attendees too (to be determined). 

So please stop by and chat! 

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


Re: QCX mini: RF output BNC or SMA #poll-notice

Jim Mcilroy
 

Used to have a Heathkit 20m rig with an RCA connector. Ran 100W through it. Never had any problems.

An RCA phono would be a good choice also.

I am also a supporter of a BNC with SMA alternative PCB pad but I accept that might be awkward with a case end plate.

73 Jim G4EQX


On 7 Aug 2020, at 15:53, Kees T <windy10605@...> wrote:

Collins Radio thought RCA connectors with the little ceramic insulator inside were great and were 50 ohms......for desktop use only, however. No mechanical stress on the external cables. 

73 Kees K5BCQ


Re: help !

ny2ny
 

Hi Ron - wow - great - thanks so much for the trouble link..yes have a scope so will start on it today !!
          73 jay ny2ny


Re: #qcx #qcx

Ronald Taylor
 

Could be lots of things. Probably bad connection in the area of the power amplifier. Might be a bad component but check connections first. Look for cold solder joints in that area. Can you send a clear close up photo of the bottom of the board? 

Ron

On Fri, Aug 7, 2020 at 05:21 rrossio via groups.io <rrossio=yahoo.com@groups.io> wrote:
On my 80 meter QCX plus radio, the output power fluctuates rapidly between 1 and 2 watts output about twice per second.
What could be causing this?
Thanks!
Rob N3EQ