Date   

Re: Idea for future QSX production

ajparent1/KB1GMX <kb1gmx@...>
 

I take the suggestion of financing or other "help" as a not so subtle hurry up.

When its ready it will be ready not all of the questions and help have
eaten several minutes or precious time, repeatedly.

We are up to six such requests or threads in the last two or so months.
From my perspective those are not helping.

I don't even make kits and I get a dozen requests every week
for help.  So I don't have to imagine, asking is it ready yet are
right up there with traveling with young kids, are we there yet?

Allison
-------------------------------
Please reply on list so we can share.
No private email, it goes to a bit bucket due to address harvesting


Puzzled with power measurements #20m #alignment #qcx

Fernando TUSELL
 

I recently finished assembly of a QCX+ CW transceiver for 20m, which worked flawlessly the first time switched on. Very nice unit and superb documentation, which really makes a difference. However, I am getting less output than expected, and I wonder if something is wrong. I am powering the QCX+ with 15V. Here are the symptoms:

   1. When I use the internal power meter for testing the power near JP20 (as per page 126 of the manual) I read 3.86W.
   2. When doing the same at the drains of th BS170 (as per page 127 of the manual) I read 5.20W.  

Are these normal output power levels when  powering with 15V? Is the drop of 5.20 - 3.86 = 1.34W in the final filter normal?

Further,  I soldered a 50 ohm resistor across  a BNC  hooked to the antenna connector and tested with an oscilloscope. I get a nice sine signal output, ca. 24Vpp. My understanding is that this translates to 0.7071 * (12V)^2 / 50 = 2.03W  which is far from the measured 3.86W  (further, 24Vpp is a far cry from the 38.82Vpp shown in the manual at page 114, 
powering with only 12V ).

Am I missing something?  If the power levels are abnormal, where should I start looking in order them to normal levels?

Very grateful for any hints you may come up with. 

EA2BEE, Fernando


Re: info connection QCX MINI 20 mt. pc for cw transmission

Vojislav [YU4HAK]
 

I just got the QCX mini kit yesterday, but it will take a few days to build it, and then some more months before my Morse code is (hopefully) any good to use it.
 
Until then, here is my take on computer asissted cw sending. 
 
I used a Raspberry Pi Pico (much easier to work with than Arduino), conjured up some python code from snippets all around the net, and got it to read keyboard input from PC and properly key a radio (1usd Pixie qrp). It works from an Android phone with an OTG cable and serial terminal software as well. Interface is basically a NPN transistor used as a switch, although I would use an optocoupler if I had any. I will draw a schematic later. As you can see in the picture, the horrible splattery thing is the code being created with keyboard and Pico :) 
 
It is still a work in progress, there are bugs and ui is nonexistent, but even in this state it seems usable to me. I won't try it for real yet, as I don't want to litter the ether with a Pixie, but as soon as I build QCX mini I will give it a go.
 
The code is here:
https://github.com/batica81/PicoMorseKeyboard
 
73
 


Re: Idea for future QSX production

Greg Walters
 

I understand your perspective Hans, and would tend to agree. But I must admit, I believe there are a large number of us out here that would be willing to finance that endeavor if you were willing. Again, please don't do it, as you will most certainly regret it. 

Once complete, as you wait on receipt of your ordered kit parts, perhaps preorders would work, as we are becoming accustomed to the current situations with the current supply chains.  

(I think I have some orders coming from you sometime... no rush).

Thank you for all you do for us, Hans. 
--
73,
Greg
KY4GW


Re: Idea for future QSX production

Hans Summers
 

Thanks Steve

But I prefer financing it myself... I see a lot of problems everywhere, for example Elecraft and their 2 years' K4 pre-orders and stress that must give them. And a host of crowd-funding horror stories from Kickstarter and such. Dealing with all that, for me, would be an unwelcome distraction and only slow things down. So when the design is finished and components available I will finance the manufacturing. But thanks anyway!

73 Hans G0UPL 



On Sat, Apr 17, 2021, 06:58 Steve Ireland <stevevk6vz@...> wrote:

Hi Hans

You may well have already considered this, but once you are happy with the QSX design and are at the point where you wish to purchase components, there is something that those of us who wish to purchase to the radio could do to help you.

As you would be aware, there are several radio and radio kit manufacturers who ask for a deposit/part payment from their initial purchasers of a particular product in order to bankroll the necessary component purchases/production costs.

None of us want you to suffer financial stress over introducing a more complicated radio kit - there is enough stress involved in that already. ;-)

After you have decided on an initial production run (say, 100 units), why not ask, via the reflector, for those who wish to purchase one of those units to make a part/full payment so you bankroll purchasing the necessary bits. You have a huge respect and confidence from your user base - and I think people would fall over themselves to help you in this way.

Just a thought. ;-)

Vy 73

Steve, VK6VZ


Re: Dummy load

David Wilcox K8WPE
 

Jack,

In my belief the alternative is the promise of a new body (which I desperately need) but I would have to wait for most of my friends to arrive to play radio and possibly get a “flame suit” to visit some of them that have already become silent keys.  Ha! (Gentlemen, this one has my tongue firmly planted in my cheek).

I would now be satisfied with a few larger memory chips and a USB socket on the side of my head.

An old story:  years ago I had a Palm Pilot (remember those?) and the later ones had a slot for an additional SD card memory chip.  My wife called me at work asking if I had “lost my mind”.  Apparently my Palm Pilot had fallen off my belt while preparing for work.  It had fallen out of my belt clip and when it hit the floor the memory chip SD card had popped out. I picked the Palm up and put it back in the clip without thinking about the SD card.   She found the SD card on the bathroom floor.  

There was enough internal memory that the programs I had used that morning functioned well without the SD card. Now my iPhone has more memory than I do. I just have to remember which app to go to to retrieve what I need. 

Dave K8WPE since 1960

David J. Wilcox’s iPad

On Apr 16, 2021, at 2:58 PM, jjpurdum via groups.io <jjpurdum@...> wrote:


Arv:

Getting old is not fun!

True, but then, neither is the alternative!

Jack, W8TEE


On Friday, April 16, 2021, 2:53:49 PM EDT, Arv Evans <arvid.evans@...> wrote:


Timothy

For some of us it is a memory issue, instead of a lack or knowledge.
Getting old is not fun! 

FYI, if you want to solder to a chrome plated item, you can electroplate
a thin coat of copper over the chrome plating.

Arv
_._


On Fri, Apr 16, 2021 at 12:41 PM Timothy Fidler <engstr@...> wrote:

Cr plate - chrome plate - solder will refuse to stick to chrome plate period.. but sometimes this is not a blessing  and in that case the Chromium has to come off so the solder can see th steel underneath and get good heat transfer.

Cu - copper.   so copper slug.  I was just abbreviating for speed.  I thought everyone knew the metal symbols from the Periodic Table.  Perhaps I am from another era :-))  TEF


Re: Dummy load

David Wilcox K8WPE
 

I never liked my desoldering bulb iron.  I saw another post years ago that advised take off the bulb, drill out the base and use it as a mini solder pot to burn off the enamel on magnet/coil wire.  Works great for that.

David J. Wilcox’s iPad

On Apr 16, 2021, at 10:09 AM, Evan Hand <elhandjr@...> wrote:



YannigR,
A good tool to have is a desoldering bulb iron. I have used it many times to change out components without damaging the board.  The cost is under $20 USD and available from many sources. 

Using that tool you loosen up one side sucking out the solder  Then heat the other side and pull on the part of th wire sticking out from the side that you cleared.  You verify that the wire is loose on the sucked side by moving the wire using a small probe or screwdriver.

Just s suggestion, maybe for future projects when needed  


73
Evan
AC9TU


Idea for future QSX production

Steve Ireland
 

Hi Hans

You may well have already considered this, but once you are happy with the QSX design and are at the point where you wish to purchase components, there is something that those of us who wish to purchase to the radio could do to help you.

As you would be aware, there are several radio and radio kit manufacturers who ask for a deposit/part payment from their initial purchasers of a particular product in order to bankroll the necessary component purchases/production costs.

None of us want you to suffer financial stress over introducing a more complicated radio kit - there is enough stress involved in that already. ;-)

After you have decided on an initial production run (say, 100 units), why not ask, via the reflector, for those who wish to purchase one of those units to make a part/full payment so you bankroll purchasing the necessary bits. You have a huge respect and confidence from your user base - and I think people would fall over themselves to help you in this way.

Just a thought. ;-)

Vy 73

Steve, VK6VZ


Re: FOR SALE BaMa QCX case

dirk tanis
 

SOLD


Re: FOR SALE BaMa QCX case

Mike Besemer - WM4B
 

Dirk,

 

I’ll take it.

 

Mike

WM4B

 

From: QRPLabs@groups.io [mailto:QRPLabs@groups.io] On Behalf Of dirk tanis
Sent: Friday, April 16, 2021 6:41 PM
To: QRPLabs@groups.io
Subject: [QRPLabs] FOR SALE BaMa QCX case

 

Unused and never opened....$40 USD shipped ppd. Prefer PayPal.

 

Dirk Tanis

WA4DT

E mail address good on QRZ


FOR SALE BaMa QCX case

dirk tanis
 

Unused and never opened....$40 USD shipped ppd. Prefer PayPal.

Dirk Tanis
WA4DT
E mail address good on QRZ


Re: Dummy load

fred.g3srf@...
 

A much cheaper way to overcome this problem is to read the manual a few times while waiting for the kit to arrive. Assemble the parts dry, i.e. not soldered, before you even think about heating the soldering iron. When you think you are ready to start soldering, STOP, read the manual again.
Only solder one component at a time, do not place a number of components and then solder them. This is how joints get missed. Before you solder each component, just take a moment and say to yourself " am I sure that this is right?"


Re: Dummy load

Bill Cromwell
 

Hi,

I have never met anybody who died young complain about it.

I have brazed a spot on steel and soldered that spot several times. I don't remember if I did that on chromed steel. It is too late for me to die young, too.

73,

Bill KU8H

bark less - wag more

On 4/16/21 2:58 PM, jjpurdum via groups.io wrote:
Arv:

/Getting old is not fun! /

True, but then, neither is the alternative!

Jack, W8TEE


On Friday, April 16, 2021, 2:53:49 PM EDT, Arv Evans <arvid.evans@...> wrote:


Timothy

For some of us it is a memory issue, instead of a lack or knowledge.
Getting old is not fun!

FYI, if you want to solder to a chrome plated item, you can electroplate
a thin coat of copper over the chrome plating.

Arv
_._


On Fri, Apr 16, 2021 at 12:41 PM Timothy Fidler <engstr@... <mailto:engstr@...>> wrote:

Cr plate - chrome plate - solder will refuse to stick to chrome
plate period.. but sometimes this is not a blessing  and in that
case the Chromium has to come off so the solder can see th steel
underneath and get good heat transfer.

Cu - copper.   so copper slug.  I was just abbreviating for
speed.  I thought everyone knew the metal symbols from the
Periodic Table. Perhaps I am from another era :-))  TEF


Re: Dummy load

Arv Evans <arvid.evans@...>
 

Guess I should have pointed to the rather simple and fairly safe method.


For ham radio purposes we do not need methods used for high-volume
plating companies.

Earlier at-home methods involved plating nickel over chrome, followed
by copper plating over the nickel. 

Arv
_._


On Fri, Apr 16, 2021 at 3:25 PM Timothy Fidler <engstr@...> wrote:

NOpe.

There is no way to copper plate in a  backyard to steel in a way that is serviceable .  You have to use a cyanide ion process and ownership of NaCN  by 
private individuals is ..... dangerous.
NOrmal electrical solder will bond to steel as long as the steel is clean.
For stainless steel soldering , you use semi killed spirtis of salts as the flux...but it will eat hell out of soldering iron tips - something to use a plumber's soldering iron for.


Re: Dummy load

Timothy Fidler
 

NOpe.

There is no way to copper plate in a  backyard to steel in a way that is serviceable .  You have to use a cyanide ion process and ownership of NaCN  by 
private individuals is ..... dangerous.
NOrmal electrical solder will bond to steel as long as the steel is clean.
For stainless steel soldering , you use semi killed spirtis of salts as the flux...but it will eat hell out of soldering iron tips - something to use a plumber's soldering iron for.


Re: info connection QCX MINI 20 mt. pc for cw transmission

GIUSEPPE
 

Good evening everyone, Mont Pierce, I only asked for help from all of you to develop this type of interface for the qcx mini, we have to thank Wolfgang and all those who answered my help, I should list them all but they are many, today is  arrived ua part of the components, in the next week the others will arrive, then I will build the long awaited PC interface -qcx mini, when I have finished building it I will send the photos.  I am not very familiar with CW so I need the PC to transmit.  thanks to all of you for the help.  good night, here in Italy it is already time to go to rest 😬😬 73 de IU8EUN Giuseppe from Calabria.👍👍


Il ven 16 apr 2021, 16:17 Wolfgang OE1MWW <oe1mww@...> ha scritto:
On Fri, Apr 16, 2021 at 06:40 AM, Mont Pierce KM6WT wrote:
Wolfgang:  have you experienced anything like the above?
yes, such symptoms depend on the chip in the USB to serial TTL converter
and the driver in Windows - unfortunately - very unpredictable.

73's de OE1MWW
Wolfgang

P.S. An old Chinese wisdom: "Electronics that work well are out of date" ;-)


Re: Dummy load

jjpurdum
 

Arv:

Getting old is not fun!

True, but then, neither is the alternative!

Jack, W8TEE


On Friday, April 16, 2021, 2:53:49 PM EDT, Arv Evans <arvid.evans@...> wrote:


Timothy

For some of us it is a memory issue, instead of a lack or knowledge.
Getting old is not fun! 

FYI, if you want to solder to a chrome plated item, you can electroplate
a thin coat of copper over the chrome plating.

Arv
_._


On Fri, Apr 16, 2021 at 12:41 PM Timothy Fidler <engstr@...> wrote:

Cr plate - chrome plate - solder will refuse to stick to chrome plate period.. but sometimes this is not a blessing  and in that case the Chromium has to come off so the solder can see th steel underneath and get good heat transfer.

Cu - copper.   so copper slug.  I was just abbreviating for speed.  I thought everyone knew the metal symbols from the Periodic Table.  Perhaps I am from another era :-))  TEF


Re: Dummy load

Arv Evans <arvid.evans@...>
 

Timothy

For some of us it is a memory issue, instead of a lack or knowledge.
Getting old is not fun! 

FYI, if you want to solder to a chrome plated item, you can electroplate
a thin coat of copper over the chrome plating.

Arv
_._


On Fri, Apr 16, 2021 at 12:41 PM Timothy Fidler <engstr@...> wrote:

Cr plate - chrome plate - solder will refuse to stick to chrome plate period.. but sometimes this is not a blessing  and in that case the Chromium has to come off so the solder can see th steel underneath and get good heat transfer.

Cu - copper.   so copper slug.  I was just abbreviating for speed.  I thought everyone knew the metal symbols from the Periodic Table.  Perhaps I am from another era :-))  TEF


Re: Dummy load

Timothy Fidler
 

Cr plate - chrome plate - solder will refuse to stick to chrome plate period.. but sometimes this is not a blessing  and in that case the Chromium has to come off so the solder can see th steel underneath and get good heat transfer.

Cu - copper.   so copper slug.  I was just abbreviating for speed.  I thought everyone knew the metal symbols from the Periodic Table.  Perhaps I am from another era :-))  TEF


Re: Dummy load

Yannig - F4IUJ
 

Thank you all for your help.

73

Yannig - F4IUJ