Date   

Re: Winding QCX T1 #qcx #t1

Art Hejduk
 

I burn the enamel using a butane lighter, remove the residue with fine grit sand paper, and then tin the wire.  It works quite well.

73,
Art  WB8ENE

On Thu, Aug 23, 2018 at 11:52 AM Glen Leinweber <leinwebe@...> wrote:

Am not fond of heat-stripping enamel wire. Yes, a hot soldering iron can eventually strip off the enamel. Applying solder liberally helps this process. But a mess of burnt residue usually is left, which is best scrapped off after cooling. Then the wire end is best re-tinned a-fresh to shed excess solder coating. It is all too easy to apply insufficient heat to actually strip the enamel, but coat the wire with solder. Looks metallic, but not electrically connected to copper.

With heat-stripping enamel, I scrape through first. Maybe not all the way around, but enough to allow soldering iron to meet fresh copper. It strips much faster, as Alan G8LCO suggests. Burnt residue still requires scraping off. With older high-temperature enamel, a thorough,complete scraping first is absolutely required, and it is visibly apparent when you've missed a bit after tinning. No burnt residue is left. This kind of enamel requires more prep work, which means that nicking copper is a bigger risk. Both types of enamel requires scraping IMO. And tinning with fluxed solder is absolutely required IMO - the risk of remnant nearly-invisible enamel is too great: tinning exposes it. I'd rather put in a full scraping effort, and be assured that enamel is gone for sure, with a clear transition from tinned copper to insulating enamel - that favours the high-heat non-striping enamel.

One other thing - reusing old enamel wire is risky. Some windings are fixed in place with a bonding agent - when you remove enamel wire from such a form (like TV deflection scan coils) the enamel can de-bond from the copper. Really old enamel often becomes brittle - you can hear and see it crack and de-bond from the copper when flexed. Not appropriate for a tight toroid winding on small cores. In any case, if you re-wind a toroid, I'd recommend using fresh wire - the original winding has had its enamel stressed too far  - original winding always goes to recycling.
-Glen VE3DNL


Re: QSX case

Dave VE3LHO
 

I have been thinking the same thing, that it'd be nice to add a battery and perhaps an ATU. I suspect others might also have this thought too since these are offered by other radios with similar size and capabilities.

My preference would be that the QRP-Labs supplied case not allow extra room for these however. I would prefer that these and the case to hold them be left as a project for the user. Why? Because I think that the QRP-Labs case should minimize (within reason) the size. Sure there might be room for some smaller add-ons but even a small battery capable of multiple watts and a small tuner will take up a fair bit of space. I don't think the users, who don't want those, should have to put up with the extra size. This is a nice *little* radio. Let's leave it such.

I see Hans has posted dimensions and I don't think that they leave a lot of room. I guess it can be a challenge for those who want to take it on : - )

This does lead to a request however. I'm hoping that there will be an option to buy just the electronics (all-band radio incl. PA and relay/filter board) without the case. I haven't bothered to mention it since its hardly a product design decision and, although Hans has only mentioned a couple of price points (single band and all band with case), I would assume he's also open to other reasonable options. But since you mention this I'll make the request now.

73

Dave L.
VE3LHO


Re: Winding QCX T1 #qcx #t1

Glen Leinweber
 

Am not fond of heat-stripping enamel wire. Yes, a hot soldering iron can eventually strip off the enamel. Applying solder liberally helps this process. But a mess of burnt residue usually is left, which is best scrapped off after cooling. Then the wire end is best re-tinned a-fresh to shed excess solder coating. It is all too easy to apply insufficient heat to actually strip the enamel, but coat the wire with solder. Looks metallic, but not electrically connected to copper.

With heat-stripping enamel, I scrape through first. Maybe not all the way around, but enough to allow soldering iron to meet fresh copper. It strips much faster, as Alan G8LCO suggests. Burnt residue still requires scraping off. With older high-temperature enamel, a thorough,complete scraping first is absolutely required, and it is visibly apparent when you've missed a bit after tinning. No burnt residue is left. This kind of enamel requires more prep work, which means that nicking copper is a bigger risk. Both types of enamel requires scraping IMO. And tinning with fluxed solder is absolutely required IMO - the risk of remnant nearly-invisible enamel is too great: tinning exposes it. I'd rather put in a full scraping effort, and be assured that enamel is gone for sure, with a clear transition from tinned copper to insulating enamel - that favours the high-heat non-striping enamel.

One other thing - reusing old enamel wire is risky. Some windings are fixed in place with a bonding agent - when you remove enamel wire from such a form (like TV deflection scan coils) the enamel can de-bond from the copper. Really old enamel often becomes brittle - you can hear and see it crack and de-bond from the copper when flexed. Not appropriate for a tight toroid winding on small cores. In any case, if you re-wind a toroid, I'd recommend using fresh wire - the original winding has had its enamel stressed too far  - original winding always goes to recycling.
-Glen VE3DNL


Re: QSX radio feature requests

Kees T
 

Here is Charley's most recent summary..............

73 Kees K5BCQ


Re: QSX radio feature requests

Kees T
 

Several years ago, one of the AQRP members developed a standalone transceiver for PSK-31 and later added SSB. It utilized the HobbyPCB Transceiver as the RF frontend and a STM32F746G for the microcontroller and color display. The interface between the two is I/Q signals and it's all DSP . It works pretty well according to Charley, W5BAA. I think that one is also a pretty darn good design point.

He made a Power Point presentation at Austin Summerfest one year.

73 Kees K5BCQ


Re: QCX - Extender cable for LCD?

ewsjts@...
 

Hey There Greg!
A length of #28 sixteen conductor ribbon cable will work.  How long of a piece do you need?  Reply off the group (or whatever you call it).  My e-mail address is on QTH.com.  I'll get it in the mail today once I find out how much you want.  Is your postal address current on QTH?
73
Ed.
WA4MZS


Re: QCX - Extender cable for LCD?

Alan G4ZFQ
 

Easiest/ fastest/ cheapest  solution might be to make up two 7pin/conductor cables using a male and female straight header.
Do you need to extend it?
Can you test with it removed? If you do not need to see it then it will do no harm and will not affect operation.

73 Alan G4ZFQ


Re: QCX - Extender cable for LCD?

N3MNT
 

Easiest/ fastest/ cheapest  solution might be to make up two 7pin/conductor cables using a male and female straight header. 


Re: QSX case

Hans Summers
 

Hi Alex

The optional aluminium enclosure has external dimensions 145 x 68 x 74mm. 

I can provide the cross-section diagram in due course.

73 Hans G0UPL 

On Thu, Aug 23, 2018, 17:07 Alex Berkuta <aberkuta@...> wrote:


I hope that later that Han's gives an idea of the case dimensions and what

volume is taken up with the internal circuitry in the full all band version.

Why? just to get an idea if there is enough room to include a Lipo pack

and small Z-match tuner with SWR to make a truly portable field rig.

Thanks

Alex VK2ABE



On 23/08/2018 11:52 PM, KE0GYC wrote:
Personally, I would be a fan of keeping it simple.  I'm no RF engineer, but it seems that more complexity will add more cost and more things to break.

I am REALLY excited about this radio.  I think it could be built into a really excellent portable radio for SOTA, and the ability to natively use PSK31 is really neat, especially at this price point.  A kit build like this could also have a TON of neat options for building into a case, too.


Re: Winding QCX T1 #qcx #t1

Alan <g8lco1@...>
 

The easy way of tinning self fluxing enamel is to apply iron tip and fresh  cored solder to the cut end of the wire. The solder reacts with the exposed copper, the  coating then melts back and the exposed copper tins quickly. Practice is good BEFORE you do the important stuff.

 

Scraping works well, you just need to remove a line of enamel -not remove all of the enamel- before iron & fresh solder.  A hot iron helps a lot for tinning .

 

Note that there are some coatings that are NOT solder through, such as deflection (scan) coils or high voltage/temp  enamels.

 

73

Alan

G8LCO

 

 

Sent from Mail for Windows 10

 

 


QSX case

Alex Berkuta
 


I hope that later that Han's gives an idea of the case dimensions and what

volume is taken up with the internal circuitry in the full all band version.

Why? just to get an idea if there is enough room to include a Lipo pack

and small Z-match tuner with SWR to make a truly portable field rig.

Thanks

Alex VK2ABE



On 23/08/2018 11:52 PM, KE0GYC wrote:
Personally, I would be a fan of keeping it simple.  I'm no RF engineer, but it seems that more complexity will add more cost and more things to break.

I am REALLY excited about this radio.  I think it could be built into a really excellent portable radio for SOTA, and the ability to natively use PSK31 is really neat, especially at this price point.  A kit build like this could also have a TON of neat options for building into a case, too.


Re: QSX radio feature requests

N1EDC
 

Personally, I would be a fan of keeping it simple.  I'm no RF engineer, but it seems that more complexity will add more cost and more things to break.

I am REALLY excited about this radio.  I think it could be built into a really excellent portable radio for SOTA, and the ability to natively use PSK31 is really neat, especially at this price point.  A kit build like this could also have a TON of neat options for building into a case, too.


Re: QSX feature request: Can it talk?

Alan de G1FXB
 

Hi Alison,

You are quite correct, I omitted to name every radio that had this feature.
 I'll throw in another there was a sota / mountain top 'lite' design that announced frequency via a Morse talker.
Very probably a SW or DB design??
Also I should mention Icom for sake of completeness, they did a voice talker card option for their mid 80's onwards radios....


The OP made valuable "can it talk" request.
I pointed out that even if it didn't get to be included as a built in QSX feature (*1)
there was a potential workaround, via interfacing via CAT
If such a device did not already exist a potential product to be developed that would have great appeal
to ANY radio CAT enabled radio (*2)


(*1)  Historically firmware is closed source in QRP-Labs products
(*2) UbiTX has a CAT interface by virtual of it group development philosophy.


As the son of having both parents suffered from AMD (dry variant) in mid - later life, I have witnessed first hand the challenges it presents to everyday independent living.
The best "hope" the professionals offer is, AMD does not make you go blind.
That is true, however loosing all central vision but retaining at most 10% peripheral is "very inconvenient".
There is no current treatment available* to delay / slow deterioration of the dry variation, which is possible in wet AMD. (It shares some attributes to other inherited or diabetic eye diseases and therefore attracts the most medical research)
my inherited AMD 'risk factor' is something around 50 - 75% compared to a non modified base line of 3 - 12% depending on age / diet etc.

Choose your parents carefully, don't smoke, eat your greens, exercise and most of all don't ever get old....
Thank you for your time.
 

May the critique commence....
breathe/


Alan


On 23/08/2018 03:41, ajparent1/KB1GMX wrote:
Alan,

You must have missed the work KB1OIQ did to take Raduino/uBitx and add voice out plus
low vision or no vision aids to that.

Allison


Re: Use original IC! displayed on QCX 20m #chat

Alan G4ZFQ
 

Alan G4ZFQ wrote:
I suspect John needs to tell us whether he obeyed
"2) Program only the provided .hex file (see above); do not change the Fuse settings, or other memories (e.g. EEPROM)"
Simon,

Sorry, I did not realise they are your instructions.
I do not use Averdudess but I see you have EEPROM "Write" ticked on your illustration.
But maybe that does not matter as nothing below is ticked?

73 Alan G4ZFQ


Re: Use original IC! displayed on QCX 20m #chat

Alan G4ZFQ
 

Please let me know if the instructions need updating.
Simon,

I suspect John needs to tell us whether he obeyed

"2) Program only the provided .hex file (see above); do not change the Fuse settings, or other memories (e.g. EEPROM)"

73 Alan G4ZFQ


Re: Use original IC! displayed on QCX 20m #chat

Kelly Jack
 

Hans,

Please let me know if the instructions need updating.

73


Simon
VK3ELH 


Re: Use original IC! displayed on QCX 20m #chat

Hans Summers
 

Hi John

I will email you off-list. 

73 Hans G0UPL

On Thu, Aug 23, 2018 at 9:17 AM <j.capel@...> wrote:

A new chat has been created:

I attempted to upgrade the firmware on my QCX 20m from 1.00e to 1.00f.  I am using the instructions from "How to update the firmware on the QCX using an arduino uno and AVRDUDESS".  Something went wrong and now I get the display "Use original IC!".  I tried updating the firmware again this evening with the following output from Avrdudess:

T1.00f.hex: 0 / 32,768 Bytes (0.00%)
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 
 
avrdude.exe: AVR device initialized and ready to accept instructions
 
Reading | ################################################## | 100% 0.01s
 
avrdude.exe: Device signature = 0x1e950f
avrdude.exe: NOTE: "flash" memory has been specified, an erase cycle will be performed
             To disable this feature, specify the -D option.
avrdude.exe: erasing chip
avrdude.exe: reading input file "C:\Users\John\Documents\QRP Labs\QCX CW Tranceiver\T1.00f.hex"
avrdude.exe: input file C:\Users\John\Documents\QRP Labs\QCX CW Tranceiver\T1.00f.hex auto detected as Intel Hex
avrdude.exe: writing flash (32076 bytes):
 
Writing | ################################################## | 100% 34.95s
 
avrdude.exe: 32076 bytes of flash written
avrdude.exe: verifying flash memory against C:\Users\John\Documents\QRP Labs\QCX CW Tranceiver\T1.00f.hex:
avrdude.exe: load data flash data from input file C:\Users\John\Documents\QRP Labs\QCX CW Tranceiver\T1.00f.hex:
avrdude.exe: input file C:\Users\John\Documents\QRP Labs\QCX CW Tranceiver\T1.00f.hex auto detected as Intel Hex
avrdude.exe: input file C:\Users\John\Documents\QRP Labs\QCX CW Tranceiver\T1.00f.hex contains 32076 bytes
avrdude.exe: reading on-chip flash data:
 
Reading | ################################################## | 100% 19.54s
 
avrdude.exe: verifying ...
avrdude.exe: 32076 bytes of flash verified
 
avrdude.exe done.  Thank you.

It is my understanding that I may need the eeprom (eep) file in addition to the hex file to remedy this problem.  And perhaps the suggested fuse settings as well.  Last evening I sent Hans a request for the eep file along with any suggestions he may have.  If anyone has access to the eep file and the recommended fuse settings, I certainly would appreciate it.

73 John KF6QPC

View/Join This Chat


Re: 4-line LCD display modification

Hans Summers
 

Hi Tom

The U3S doesn't support 4-line displays

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

On Thu, Aug 23, 2018 at 4:58 AM Thomas Yarish <yarishwt@...> wrote:
Is there a proven way to implement a 4-line LCD display on the U3s?

Thanks,

Tom 
KJ6MKI


Use original IC! displayed on QCX 20m #chat

j.capel@...
 

A new chat has been created:

I attempted to upgrade the firmware on my QCX 20m from 1.00e to 1.00f.  I am using the instructions from "How to update the firmware on the QCX using an arduino uno and AVRDUDESS".  Something went wrong and now I get the display "Use original IC!".  I tried updating the firmware again this evening with the following output from Avrdudess:

T1.00f.hex: 0 / 32,768 Bytes (0.00%)
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 
 
avrdude.exe: AVR device initialized and ready to accept instructions
 
Reading | ################################################## | 100% 0.01s
 
avrdude.exe: Device signature = 0x1e950f
avrdude.exe: NOTE: "flash" memory has been specified, an erase cycle will be performed
             To disable this feature, specify the -D option.
avrdude.exe: erasing chip
avrdude.exe: reading input file "C:\Users\John\Documents\QRP Labs\QCX CW Tranceiver\T1.00f.hex"
avrdude.exe: input file C:\Users\John\Documents\QRP Labs\QCX CW Tranceiver\T1.00f.hex auto detected as Intel Hex
avrdude.exe: writing flash (32076 bytes):
 
Writing | ################################################## | 100% 34.95s
 
avrdude.exe: 32076 bytes of flash written
avrdude.exe: verifying flash memory against C:\Users\John\Documents\QRP Labs\QCX CW Tranceiver\T1.00f.hex:
avrdude.exe: load data flash data from input file C:\Users\John\Documents\QRP Labs\QCX CW Tranceiver\T1.00f.hex:
avrdude.exe: input file C:\Users\John\Documents\QRP Labs\QCX CW Tranceiver\T1.00f.hex auto detected as Intel Hex
avrdude.exe: input file C:\Users\John\Documents\QRP Labs\QCX CW Tranceiver\T1.00f.hex contains 32076 bytes
avrdude.exe: reading on-chip flash data:
 
Reading | ################################################## | 100% 19.54s
 
avrdude.exe: verifying ...
avrdude.exe: 32076 bytes of flash verified
 
avrdude.exe done.  Thank you.

It is my understanding that I may need the eeprom (eep) file in addition to the hex file to remedy this problem.  And perhaps the suggested fuse settings as well.  Last evening I sent Hans a request for the eep file along with any suggestions he may have.  If anyone has access to the eep file and the recommended fuse settings, I certainly would appreciate it.

73 John KF6QPC

View/Join This Chat


QCX - Extender cable for LCD?

Greg Hering <glhering@...>
 

Hi,

Does anyone know of a source for a cable to use as an extender for the LCD.  I am having problems with my kit and want to be able to probe underneath the LCD but it's in the way.

Thanks

73 Greg KE4HBQ