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QMX logging - feature?

 

Hans,?
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Could qso logging, like the elecraft rigs, ever become a thing on the QMX / + radio. Or is the EPROM just not large enough ?
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Just thinking it would mean one less thing to have to pack..?
 

Hello Samantha
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Could qso logging, like the elecraft rigs, ever become a thing on the QMX / + radio. Or is the EPROM just not large enough ?
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Just thinking it would mean one less thing to have to pack..?

I don't know which Elecraft Rig you are referring to specifically. But for example:
  • Elecraft KX2 has a 32K EEPROM chip
  • Elecraft?KX3 has a 64K EEPROM chip
  • Elecraft?KH1 we don't have a schematic but the logger is stated to be able to record "32 kB of recorded TX text" (32,000 characters) - presumably the other 768 are used by settings, or maybe they really meant KB but not kB and whoever wrote the web page didn't know the distinction between k and K, maybe settings are stored in their microcontroller which also has some EEPROM like an ATmega328 does, I don't know!
  • QMX has a 128K EEPROM chip - 4x bigger than a KX2 and 2x bigger than a KX3.?
Currently QMX settings use a total of 1,497 bytes out of the 131,072 bytes in the EEPROM (1.1%). There's also a (little used) log file taking up another 6K (4.7%) so it means the QMX EEPROM is over 94% free, for our future dreams!

I specifically chose a large EEPROM chip so that we would have plenty of space for storing user-defined BASIC scripts, and for logging. I have not devoted ANY attention to it yet, but I dream of a far more sophisticated logging tool than just recording transmitted or decoded received CW. Of course this is future item, it will take time to get to it. I did design the QMX hardware with a lot of planned future capabilities.?

73 Hans G0UPL
 

Hopefully I can disable the option if I don't want to use it.
 

Of course, Joe ;-)

73 Hans G0UPL


On Thu, Aug 1, 2024, 18:18 Joe AI5DD via <josefius=[email protected]> wrote:
Hopefully I can disable the option if I don't want to use it.
 

And this is why we love your kits...?
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Just ordered the QMX+, have 2x QMXs, 2x QCX minis and an og QCX.? I think after this one I would have run out of kits to build...?
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Thanks for giving us some of the best kit radios ever.?
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73
Sam 2E1OCT?
 

Hi Samantha
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Just ordered the QMX+, have 2x QMXs, 2x QCX minis and an og QCX.? I think after this one I would have run out of kits to build...?

I'll have to start designing?some new kits for you to build!

73 Hans G0UPL
 

You tease :D?
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On Thu, Aug 1, 2024 at 08:28 PM, Hans Summers wrote:

Hi Samantha
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Just ordered the QMX+, have 2x QMXs, 2x QCX minis and an og QCX.? I think after this one I would have run out of kits to build...?
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I'll have to start designing?some new kits for you to build!
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73 Hans G0UPL

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I'd love to build a multi-band QCX-mini. Just sayin...
.rr

On Thu, Aug 1, 2024 at 03:28 PM, Hans Summers wrote:

I'll have to start designing some new kits for you to build!
 

Isn't that what the QMX basically is?!
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On Thu, Aug 1, 2024 at 08:34 PM, va3rr wrote:

I'd love to build a multi-band QCX-mini. Just sayin...
.rr
On Thu, Aug 1, 2024 at 03:28 PM, Hans Summers wrote:

I'll have to start designing some new kits for you to build!
 

*cough*QSX*cough*

73

-- Matt N3AR


On Thu, Aug 1, 2024 at 12:28?PM Hans Summers via <hans.summers=[email protected]> wrote:
Hi Samantha
?
Just ordered the QMX+, have 2x QMXs, 2x QCX minis and an og QCX.? I think after this one I would have run out of kits to build...?

I'll have to start designing?some new kits for you to build!

73 Hans G0UPL
 

Both feature direct conversion receivers with I/Q output, but the QCX has analog active filtering, while the QMX is an powerful SDR. A multi-band QCX could be great on a small battery pack..

On Thu, Aug 1, 2024 at 04:04 PM, Danny Bower wrote:


Isn't that what the QMX basically is?!
 

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Both feature direct conversion receivers with I/Q output, but the QCX has analog active filtering, while the QMX is an powerful SDR.? A multi-band QCX could be great on a small battery pack..

According to the web page a QCX-mini has 72mA current consumption at 12V and a QMX has 80mA. So there's hardly any difference. And in fact QCX-mini would also have to increase its RX current if there were band-switching mechanisms too (even if there was space for such a thing inside it). TX current of the QCX-mini is better than QMX because QCX-mini is Class-E vs push-pull Class-D in QMX. But considering there would be 50-60mA extra for PIN diode filter switching on TX (which is much less on QMX due to the buck converter)... it's not really practical on a QCX-mini nor beneficial, for many reasons.?

73 Hans G0UPL


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So, an evolutionary dead end? That's a shame, as it is a fun CW rig to operate. I must say I am using my QMX almost exclusively ATM. It is indeed a marvel...

tnx Hans! de Russ, va3rr
 

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So, an evolutionary dead end?? That's a shame, as it is a fun CW rig to operate.? I must say I am using my QMX almost exclusively ATM.? It is indeed a marvel...

I still love my 20m QCX too, it's an original QCX Classic (Rev 4 PCB) built into an enclosure along with the original prototype 50W PA kit . I have had many happy QSOs with this rig.?

I have no plans to discontinue the successor rigs QCX+ and QCX-mini, actually I have 500 more of each in production right now. 20,833 of the QCX-series have been sold since the August 2017 debut. QCX is coming up to 7 years old. It's the first QRP Labs transceiver and a huge landmark for QRP Labs and for me personally.?

Nevertheless - the chip is full, it's very hard to make any more codespace inside; QCX-mini is maximally compact. It's hard to see a beneficial direction of evolution for the QCX-series, particularly in the shadow of QMX.?
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73 Hans G0UPL
 

20,833 of the QCX-series have been sold since the August 2017 debut.
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Maybe for the ten year anniversary,? you could do a limited release anniversary special of the og QCX..
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I have the 40m QCX, it was my first kit, and still use it regularly.?
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I just love your kits. Just really grateful they are qrp-labs prices not elecraft prices... I would have had to have sold both kidneys and my spleen by now....?

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