Date   

Re: K6JTH's versatile stand for the QCX-mini

KK4ITX John
 

Thanks for the response, in my former life I did some CNC programming so I really was trying to get a feel for the printing time vs 3D.

I wonder if making 2 a time would be quicker ? …… no answer required.

Thanks,

John
KK4ITX 

🙃Each mistake is a learning opportunity.🙂

On Apr 15, 2022, at 6:36 PM, Colin Kaminski <colinskaminski@...> wrote:


If I print in high quality mode, it is 3.5 hours per pair. 

Colin
K6JTH 

On Fri, Apr 15, 2022 at 3:35 PM Mark N8MH <marklhammond@...> wrote:
It took two days to get the right firmware ;)   It seems like it was well under an hour to print each one...pretty quick.  I started them and walked away...so didn't pay attention to the actual time!

73,
Mark N8MH


Re: QCX+ and 50W Amp - Power Supply Recommendations #50w #qcx #power

Stephen Sherer
 

The voltage controller has no noise or I would not use it. The voltage source must be at least the same voltage you will need. It is not a buck converter. I did not get the speed controller for brushless motors. I suspect it will also work, but dont know.
--
KE4LJH
Steve, 
Florida


Re: T41-EP/DSP book

richlim11
 

Agree! I love my QCX’s…I have 5 and just ordered #6. Very satisfying to build and I’m planning on modding my 40m w the dev board to include and onboard amp and speaker.

Rich




On Friday, April 15, 2022, 5:25 PM, KK4ITX John via groups.io <jleahy00@...> wrote:

There’s nothing wrong with one of each, at the cost of QRPLabs products it’s a no brainer…… except for shipping, customs and other BS.  My QCX-Mini is dynamite!

John
KK4ITX

🙃Each mistake is a learning opportunity.🙂

> On Apr 15, 2022, at 6:07 PM, Bill Collins <photo@...> wrote:
>
> I have seen very little solid information on the T41, so it's hard to say.
> It would be nice to at least know which bands it covers and approximate price of the kit. I suppose the book would answer the first question.
>
>> On 04/15/2022 5:20 PM Ian VA7ITM <ian.mcalpine@...> wrote:
>>
>>
>> Now I'm undecided... build the T41-EP or continue waiting for the QSX?!
>>
>> 73 Ian
>>
>>
>>
>
>
>
>
>







Re: K6JTH's versatile stand for the QCX-mini

Colin Kaminski
 

If I print in high quality mode, it is 3.5 hours per pair. 

Colin
K6JTH 

On Fri, Apr 15, 2022 at 3:35 PM Mark N8MH <marklhammond@...> wrote:
It took two days to get the right firmware ;)   It seems like it was well under an hour to print each one...pretty quick.  I started them and walked away...so didn't pay attention to the actual time!

73,
Mark N8MH


Re: K6JTH's versatile stand for the QCX-mini

Mark N8MH
 

It took two days to get the right firmware ;)   It seems like it was well under an hour to print each one...pretty quick.  I started them and walked away...so didn't pay attention to the actual time!

73,
Mark N8MH


Re: T41-EP/DSP book

KK4ITX John
 

There’s nothing wrong with one of each, at the cost of QRPLabs products it’s a no brainer…… except for shipping, customs and other BS. My QCX-Mini is dynamite!

John
KK4ITX

🙃Each mistake is a learning opportunity.🙂

On Apr 15, 2022, at 6:07 PM, Bill Collins <photo@...> wrote:

I have seen very little solid information on the T41, so it's hard to say.
It would be nice to at least know which bands it covers and approximate price of the kit. I suppose the book would answer the first question.

On 04/15/2022 5:20 PM Ian VA7ITM <ian.mcalpine@...> wrote:


Now I'm undecided... build the T41-EP or continue waiting for the QSX?!

73 Ian






Re: T41-EP/DSP book

richlim11
 

On Friday, April 15, 2022, 5:07 PM, Bill Collins <photo@...> wrote:

I have seen very little solid information on the T41, so it's hard to say.
It would be nice to at least know which bands it covers and approximate price of the kit. I suppose the book would answer the first question.

> On 04/15/2022 5:20 PM Ian VA7ITM <ian.mcalpine@...> wrote:
>

> Now I'm undecided... build the T41-EP or continue waiting for the QSX?!
>
> 73 Ian
>
>
>






Re: T41-EP/DSP book

Bill Collins
 

I have seen very little solid information on the T41, so it's hard to say.
It would be nice to at least know which bands it covers and approximate price of the kit. I suppose the book would answer the first question.

On 04/15/2022 5:20 PM Ian VA7ITM <ian.mcalpine@...> wrote:


Now I'm undecided... build the T41-EP or continue waiting for the QSX?!

73 Ian



Re: K6JTH's versatile stand for the QCX-mini

KK4ITX John
 

How long did it take to make them ? I may try to get someone to make up a pair for my Mini.

John
KK4ITX 

🙃Each mistake is a learning opportunity.🙂

On Apr 15, 2022, at 4:29 PM, Mark N8MH <marklhammond@...> wrote:

Thanks, Colin!  I just printed a pair, using your ver4 file.  Very nice, slipped right on the QCX-mini.  These were the second and third things printed on the new printer--first thing was the test dog file..

(Btw--another market obviously suffering from supply chain issues evidently is the 3D printer world...took me 2 days to track down a firmware file for the "new compatible" cpu they are using (in a Ender 3 Pro) that supports their CR touch add on..  Anyhow, github to the rescue....)

73!
Mark N8MH


Help reclaiming the magic smoke that came out of my 50W PA #help #magicsmoke #troubleshooting

Charles Johnson
 

Greetings all,

In going to adjust the bias for the 40m 50W PA that I've built, I began with R5 turned all the way down as per the instructions. Putting the QXC+, which was outputting 4.24W into a QRP Labs dummy load (supply voltage 13.84V, measured voltage on the load 20V), into Practice Mode, I connected the PA (supply voltage also 13.84V, from the same PSU) in series between the QXC+ and the dummy load. WIth R5 all the way down, I measured 93mA. Turning it up, once I hit 95mA, I nudged it back and the meter read 93mA. Taking the QXC+ out of Practice mode, I then depressed my straight key and measured 4.16V on the dummy load. Unfortunately, I'm pretty sure that the VOM was set to read AC voltage (it defaults to AC), so I have no idea what the actual output was. Since I thought it was DC voltage, though, I decided to have a second go at calibrating the PA.

For my second attempt, it was identical, save I mistakenly did NOT put the QXC+ in Practice mode. I did, though, have a dummy load connected to the amp. With R5 turned all the way down, the multimeter was reading 990mA on key down. I turned R5 up a bit - no change. I then began to turn R5 up some more...and then whatever series of events happened (me looking at the meter and/or applying too much torque on the screwdriver or...), the result was that R5 was turned up quite a bit and some smoke and a burning smell came out from just forward of R5, between it and IC1 (it looked like it was coming from beneath R5 and IC1 looks just normal). Interestingly enough, the position was right near the setting from the previous calibration. Turning R5 all the way down, when I keyed the QXC+, things appeared to work - the PA was drawing 900mA while idle and when I keyed the QXC+, the current draw went up to ~990mA. Beginning to turn R5 up again, things seemed to work...until I hit the (potentiometer) position roughly where the puff of smoke had come out. At that point, current consumption dived down to ~15mA (effectively 0).

As I'm not sure where to start troubleshooting this - nowhere else on the amp seemed to be affected - I would appreciate any and all help. I have not looked at the underside of the PCB, so I do not know if there was any damage there. I can supply pictures of the PCB, if desired, but nothing looks wrong at least on the top side.

Charles Johnson
KF4AYT

PS As the multimeter that I was using to read the current consumption is new to me, I suspect that I had the range set differently during the first measurement. I know that the numbers written down for the second measurement are accurate (ie if I say that the meter read 990mA, I mean that it was showing 0.990 when set to the 10A setting).


Re: VFO/ Sig Gen with HW-101

Rod Smith
 

That *does* sound fun and very satisfying.  

I wonder whether you’ve ever tried or considered trying a “huff ‘n’ puff” stabiliser on the original VFO?

73
Rod
G0VKX


Re: T41-EP/DSP book

Ian VA7ITM
 

Now I'm undecided... build the T41-EP or continue waiting for the QSX?!

73 Ian


Re: K6JTH's versatile stand for the QCX-mini

Mark N8MH
 

Thanks, Colin!  I just printed a pair, using your ver4 file.  Very nice, slipped right on the QCX-mini.  These were the second and third things printed on the new printer--first thing was the test dog file..

(Btw--another market obviously suffering from supply chain issues evidently is the 3D printer world...took me 2 days to track down a firmware file for the "new compatible" cpu they are using (in a Ender 3 Pro) that supports their CR touch add on..  Anyhow, github to the rescue....)

73!
Mark N8MH


Re: Mapping errors (was Re: [QRPLabs] Is Hans on Vacation

D. Daniel McGlothin KB3MUN
 

The internet archive has this version of the referenced page:

https://web.archive.org/web/20191117210039/https://butyoudontlooksick.com/articles/written-by-christine/the-spoon-theory/

73 de Daniel KB3MUN
On 4/14/2022 19:00, William Smith wrote:

First time I've ever seen a 525 error.  "Cloudflare is unable to establish an SSL connection to the origin server."

Sounds like https://en.wikipedia.org/wiki/Spoon_theory might be it, but then we're so far off-topic I'm not sure where we are...

73, Willie N1JBJ

On Apr 14, 2022, at 4:54 PM, Gwen Patton <ardrhi@...> wrote:

I sort of live by Spoon Theory. 

https://butyoudontlooksick.com/articles/written-by-christine/the-spoon-theory/






Re: Article on Hans

Hans Summers
 

Thanks Suat Alper kardeşım

What about "kırmızı balık", his absolute favorite that he can watch on a loop 10+ times. Not sure I'll ever be able to get it out of my head... 

73 Hans G0UPL
http://qrp-labs.com
https://www.buymeacoffee.com/g0upl


-------- Original message --------
From: Suat Alper Seyhan <saseyhan@...>
Date: Fri, Apr 15, 2022, 10:02 PM
To: QRPLabs@groups.io
Subject: Re: [QRPLabs] Article on Hans
"Yağmur Adam Şip-Şap-Şop" my kid also watches that stuff sometimes. Her other favorite was "ç-o-m-a-r" (Turkish version of B-i-n-g-o) .Nice to know that I'm not the only ham getting exposed to that while winding toroids :)  Greetings to "Yenge", you and the whole team. 


Re: #gps #gps

 

On Fri, Apr 15, 2022 at 01:48 PM, Ronald Taylor wrote:
unless you have Perfect Pitch
Even that wouldn't matter: F5 is 698.46Hz, not 700Hz...

Kidding, of course ;-)
 
--
Julian, N4JO.


Re: #wspr wspr kit options? #wspr

Ron Carr
 

Re would you need switched bandpass filters for the receiver?

I think that depends upon where you live.  I live in the country and there aren't any high power RF stations nearby.  I run a QRP-Labs receiver with the switched lowpass filters instead of bandpass filters and use the same lowpass filters for transmitting.  The bandpass filter position on the receiver is just shorted to pass the signal.

If you live in the city near broadcast stations or have an Amateur station nearby you would probably want to use the bandpass filters for receiving and lowpass filters for transmitting.   I am not sure if you could fit all that into the case made for the U3S ( U3S, receiver module, polyphase module, switched lowpass filters, switched bandpass filters ).  Another issue would be the current demand on the ATMega pins to drive the relays.  You may need to add a relay driver circuit to drive 2 relays.


Re: Article on Hans

Suat Alper Seyhan
 

"Yağmur Adam Şip-Şap-Şop" my kid also watches that stuff sometimes. Her other favorite was "ç-o-m-a-r" (Turkish version of B-i-n-g-o) .Nice to know that I'm not the only ham getting exposed to that while winding toroids :)  Greetings to "Yenge", you and the whole team. 


Re: #gps #gps

Ronald Taylor
 

Hi Bryan. Theoretically, you should not need to calibrate the Ref Frequency more than once when using it for CW. It doesn't drift enough to tell the difference on CW ... unless you have Perfect Pitch. Do it as often as you like. It doesn't hurt anything and probably isn't necessary until you do a factory reset for some reason ... Have fun ... 73 ... Ron


On Fri, Apr 15, 2022 at 11:07 AM Bryan Curl <bc3910@...> wrote:
How often do I need to re-cal ref osc for CW only use, stable temp environment? 
--
regards,
Bryan, N0LUF


Re: #wspr wspr kit options? #wspr

Wayde Nie
 

That sounds worth the extra $11... I better stop asking questions, before my bill increases any more :-) 

...but I never was very good at that... so, re: the switched lowpass kit, would it work on the receiver board as well as the transmitter? assuming that if I went that way, I'd need 2?

I hope this thread is helpful to others who might be interested, but even if not, I fully appreciate all the help of this group, thanks!W

9561 - 9580 of 91865