Date   

Re: QSX Enclosure Request

ajparent1/KB1GMX
 

On Thu, Sep 20, 2018 at 10:43 AM, Chris Smith wrote:
Also outdoors, running portable, the reflective display uses only 6-10mW of power without the backlight turned on.  A great battery outcome. The blue LCD in the QCX was rather hungry compared to that and IMHO (sorry Hans!), as it was only effective in transmissive mode ,a criminal choice for outdoor usage. Had to get rid of that right away.  <<<

Funny I took my blue display out in the sun and it was fine.  However I have a high/low switch at high power position
has some resistance  100 ohms to tame the current and low is 820 ohms to really lower the current (display, arduino,
encoder, and 5351 under 45ma). That seems to work well out doors for me.  I also have trans-reflective and the
yellow green.

Most back lit displays at 5V out of the box are way too bright.  Also it helps to do a minor adjust on the contrast
as in some case it was a night and day thing.

Allison


Re: QSX feature request

freefuel@...
 

you guys mentioning USB and IQ stuff reminds me of this now discontinued kit, http://ae9rb.com/index.php?main_page=product_info&cPath=1&products_id=8&zenid=56f7ae4cc2ee385fbd8c6c06a2531a8d

-Justin N2TOH 


Re: 30m QCX working – but not for long....

Glen Leinweber
 

Can you get CW decoded on the LCD while transmitting?
If so, then that leaves one op-amp (and stuff connected to)....IC10A.
If CW doesn't decode (and the menu item is ENABLED), then
everything past the gain pot (Q7, IC10B, IC10A) is suspect. I'm pointing
out the active devices, not to point suspicion to them, but to broadly
point out the stages - all the parts associated with these stages are suspect.

You have an intermittent - a nasty thing to debug.
I might suspect the earphone jack area. If this thing is overheated during
soldering, it can distort and its spring pressure relaxed...the clearances
inside are tiny.


Re: QSX Enclosure Request

Chris Smith <me@...>
 

Perfect.  When can you take my money :)

Best regards,

Chris Smith M0XTE


On Thu, 20 Sep 2018, at 18:50, Hans Summers wrote:
Chris

Yes. The QSX has a green/yellow transflective LCD. The backlight may be switched on or off under firmware control. 

73 Hans G0UPL

On Thu, Sep 20, 2018 at 8:44 PM Chris Smith <me@...> wrote:

Spot on.  Most of the absorption comes from outside the visible spectrum anyway so the point on colour is moot at least from a heating perspective.

From an interface and usability perspective, things are different though. The combination of the enclosure colour and the LCD type used are a major usability decision. The best outcome for a portable or home use device is a dark enclosure with a transflective LCD (green LED backlit ones). That covers all ambient lighting conditions then. Outside, the case doesn't reflect light blinding you and the display works in reflective mode giving amazing contrast. In low lighting (indoors where there is power!) the backlight can be turned on to use the display in transmissive mode. Hence why the FT-817/818 uses this and all radios are mostly black now. It was a design study that came up with a usability sweet spot. Our eyes and planet pretty much specified this design rather than it being an arbitrary choice.

Also outdoors, running portable, the reflective display uses only 6-10mW of power without the backlight turned on.  A great battery outcome. The blue LCD in the QCX was rather hungry compared to that and IMHO (sorry Hans!), as it was only effective in transmissive mode ,a criminal choice for outdoor usage. Had to get rid of that right away.

As always, buyer beware of people selling primarily functional things in weird or trendy colours. Don't differentiate your product by making it horrible to use.

Best regards,

Chris Smith M0XTE



On Thu, 20 Sep 2018, at 10:52, Hans Summers wrote:
Hi Alan

QSX enclosure outside dimension is 145w x 68h x 73d mm. The heatsink protrudes 25mm at the back panel. The knobs protrude 10mm at the front panel.

Even despite not really having an idle moment I googled a bit more about heatsinks (as far as black/white colour etc is concerned, radiation and absorption are equivalent). It seems that colour is a matter of preference, making a nice smooth protected finish, etc. There is not a significant heat absorption/emission benefit. 

What I read reinforces my opinion. I believe it will be the same with the QSX enclosure. Colour isn't going to save it from getting hot in the sun. It will make little, if any, difference. From your perspective colour should come down to personal taste. From my perspective it is a matter of pricing and logistics. 

73 Hans G0UPL

On Thu, Sep 20, 2018 at 12:28 PM Alan de G1FXB via Groups.Io <g1fxb=yahoo.co.uk@groups.io> wrote:
Hi Al,
for trail carry I use army surplus pouches mainly for convenience & bash protection here in the UK rather than thermal reasons.....
though i'm sure that would also provide the required sufficient thermal protection in your situation.
(May have to make a cut out in the bottom of the pouch in the case of the QSX for the heat sink)

It's hard to judge size from the images supplied so far, only a little wider than the U3 case and 1/3rd / 1/2 as deep?
It looks to be able to fit in something similar to a US 100 / 200 Round pouch,
if it proves too small the 300 Round bag will possibly in addition hold batteries, AMU, and simple wire antennas...
or in Europe and NATO countries, the respirator / field bag are more easily sourced?

I believe IO groups already support polling?
I would vote for black to match the previous high quality anodized finished QRP Labs cases.....

Alan


On 20/09/2018 00:20, Al Clark wrote:
I'm sure Hans is getting overwhelmed with QSX requests, but I had to throw this one in before the QSX gets too far along.  My request is please don't make the enclosure black.  When you have a xcvr outside in the hot Alabama sun, a black case gets really hot - too hot to touch in fact.  And the high enclosure temperature probably doesn't do the electronics and display much good either.  A light color is preferable, like white or yellow.  I suppose red or blue might be useable, but I imagine those would get fairly warm also.  Actually, a gold or yellow anodized enclosure would be nice, but I suppose anodizing would increase the cost.
--
Al KD4EO








Re: QSX Enclosure Request

Hans Summers
 

Chris

Yes. The QSX has a green/yellow transflective LCD. The backlight may be switched on or off under firmware control. 

73 Hans G0UPL


On Thu, Sep 20, 2018 at 8:44 PM Chris Smith <me@...> wrote:
Spot on.  Most of the absorption comes from outside the visible spectrum anyway so the point on colour is moot at least from a heating perspective.

From an interface and usability perspective, things are different though. The combination of the enclosure colour and the LCD type used are a major usability decision. The best outcome for a portable or home use device is a dark enclosure with a transflective LCD (green LED backlit ones). That covers all ambient lighting conditions then. Outside, the case doesn't reflect light blinding you and the display works in reflective mode giving amazing contrast. In low lighting (indoors where there is power!) the backlight can be turned on to use the display in transmissive mode. Hence why the FT-817/818 uses this and all radios are mostly black now. It was a design study that came up with a usability sweet spot. Our eyes and planet pretty much specified this design rather than it being an arbitrary choice.

Also outdoors, running portable, the reflective display uses only 6-10mW of power without the backlight turned on.  A great battery outcome. The blue LCD in the QCX was rather hungry compared to that and IMHO (sorry Hans!), as it was only effective in transmissive mode ,a criminal choice for outdoor usage. Had to get rid of that right away.

As always, buyer beware of people selling primarily functional things in weird or trendy colours. Don't differentiate your product by making it horrible to use.

Best regards,

Chris Smith M0XTE



On Thu, 20 Sep 2018, at 10:52, Hans Summers wrote:
Hi Alan

QSX enclosure outside dimension is 145w x 68h x 73d mm. The heatsink protrudes 25mm at the back panel. The knobs protrude 10mm at the front panel.

Even despite not really having an idle moment I googled a bit more about heatsinks (as far as black/white colour etc is concerned, radiation and absorption are equivalent). It seems that colour is a matter of preference, making a nice smooth protected finish, etc. There is not a significant heat absorption/emission benefit. 

What I read reinforces my opinion. I believe it will be the same with the QSX enclosure. Colour isn't going to save it from getting hot in the sun. It will make little, if any, difference. From your perspective colour should come down to personal taste. From my perspective it is a matter of pricing and logistics. 

73 Hans G0UPL

On Thu, Sep 20, 2018 at 12:28 PM Alan de G1FXB via Groups.Io <g1fxb=yahoo.co.uk@groups.io> wrote:
Hi Al,
for trail carry I use army surplus pouches mainly for convenience & bash protection here in the UK rather than thermal reasons.....
though i'm sure that would also provide the required sufficient thermal protection in your situation.
(May have to make a cut out in the bottom of the pouch in the case of the QSX for the heat sink)

It's hard to judge size from the images supplied so far, only a little wider than the U3 case and 1/3rd / 1/2 as deep?
It looks to be able to fit in something similar to a US 100 / 200 Round pouch,
if it proves too small the 300 Round bag will possibly in addition hold batteries, AMU, and simple wire antennas...
or in Europe and NATO countries, the respirator / field bag are more easily sourced?

I believe IO groups already support polling?
I would vote for black to match the previous high quality anodized finished QRP Labs cases.....

Alan


On 20/09/2018 00:20, Al Clark wrote:
I'm sure Hans is getting overwhelmed with QSX requests, but I had to throw this one in before the QSX gets too far along.  My request is please don't make the enclosure black.  When you have a xcvr outside in the hot Alabama sun, a black case gets really hot - too hot to touch in fact.  And the high enclosure temperature probably doesn't do the electronics and display much good either.  A light color is preferable, like white or yellow.  I suppose red or blue might be useable, but I imagine those would get fairly warm also.  Actually, a gold or yellow anodized enclosure would be nice, but I suppose anodizing would increase the cost.
--
Al KD4EO





Re: QSX Enclosure Request

Chris Smith <me@...>
 

Spot on.  Most of the absorption comes from outside the visible spectrum anyway so the point on colour is moot at least from a heating perspective.

From an interface and usability perspective, things are different though. The combination of the enclosure colour and the LCD type used are a major usability decision. The best outcome for a portable or home use device is a dark enclosure with a transflective LCD (green LED backlit ones). That covers all ambient lighting conditions then. Outside, the case doesn't reflect light blinding you and the display works in reflective mode giving amazing contrast. In low lighting (indoors where there is power!) the backlight can be turned on to use the display in transmissive mode. Hence why the FT-817/818 uses this and all radios are mostly black now. It was a design study that came up with a usability sweet spot. Our eyes and planet pretty much specified this design rather than it being an arbitrary choice.

Also outdoors, running portable, the reflective display uses only 6-10mW of power without the backlight turned on.  A great battery outcome. The blue LCD in the QCX was rather hungry compared to that and IMHO (sorry Hans!), as it was only effective in transmissive mode ,a criminal choice for outdoor usage. Had to get rid of that right away.

As always, buyer beware of people selling primarily functional things in weird or trendy colours. Don't differentiate your product by making it horrible to use.

Best regards,

Chris Smith M0XTE



On Thu, 20 Sep 2018, at 10:52, Hans Summers wrote:
Hi Alan

QSX enclosure outside dimension is 145w x 68h x 73d mm. The heatsink protrudes 25mm at the back panel. The knobs protrude 10mm at the front panel.

Even despite not really having an idle moment I googled a bit more about heatsinks (as far as black/white colour etc is concerned, radiation and absorption are equivalent). It seems that colour is a matter of preference, making a nice smooth protected finish, etc. There is not a significant heat absorption/emission benefit. 

What I read reinforces my opinion. I believe it will be the same with the QSX enclosure. Colour isn't going to save it from getting hot in the sun. It will make little, if any, difference. From your perspective colour should come down to personal taste. From my perspective it is a matter of pricing and logistics. 

73 Hans G0UPL

On Thu, Sep 20, 2018 at 12:28 PM Alan de G1FXB via Groups.Io <g1fxb=yahoo.co.uk@groups.io> wrote:
Hi Al,
for trail carry I use army surplus pouches mainly for convenience & bash protection here in the UK rather than thermal reasons.....
though i'm sure that would also provide the required sufficient thermal protection in your situation.
(May have to make a cut out in the bottom of the pouch in the case of the QSX for the heat sink)

It's hard to judge size from the images supplied so far, only a little wider than the U3 case and 1/3rd / 1/2 as deep?
It looks to be able to fit in something similar to a US 100 / 200 Round pouch,
if it proves too small the 300 Round bag will possibly in addition hold batteries, AMU, and simple wire antennas...
or in Europe and NATO countries, the respirator / field bag are more easily sourced?

I believe IO groups already support polling?
I would vote for black to match the previous high quality anodized finished QRP Labs cases.....

Alan


On 20/09/2018 00:20, Al Clark wrote:
I'm sure Hans is getting overwhelmed with QSX requests, but I had to throw this one in before the QSX gets too far along.  My request is please don't make the enclosure black.  When you have a xcvr outside in the hot Alabama sun, a black case gets really hot - too hot to touch in fact.  And the high enclosure temperature probably doesn't do the electronics and display much good either.  A light color is preferable, like white or yellow.  I suppose red or blue might be useable, but I imagine those would get fairly warm also.  Actually, a gold or yellow anodized enclosure would be nice, but I suppose anodizing would increase the cost.
--
Al KD4EO





QCX on 20m,30m,40m

m0bmn
 

Hi All
recently got my QCX working just right on 20m, i can get nearly 5 watts at 13.8v and more if i increase the voltage so very happy with it, but i was just playing around with the presets and managed to store a 30m freq, much to my surprise it burst into life and i was listening to a cw signal near the dig mode freqs, i connect it to a dummy load and found i was getting just over 5 watts out too, i tried 40m and yes that too was working at a reasonable rx sensitivity. i thought oh well lets see if it tx's and was amazed to see 5 watts again, it didnt want to go down any further to 60m but seems ok on 40m . my question, if it receives ok then  the only real difference on a 40/30/20m QCX is the lowpass filter? is that right? if so could i not simply use the QRPLabs 30/40m lowpass filters in a separate enclosure to use it on the other bands??
anyone tried this?? i am not going to use it as it stands on any other bands , i know the harmonic conent would be high , but that said shouldn't the 20m lowpass filter kill harmonics from 30 anyway?
any thoughts.
73
Paul M0BMN

 


Re: QSX Enclosure Request

Hans Summers
 


Hi all

1) QSX will meet regulatory requirements in all jurisdictions on all bands, if built with the supplied components and following the published assembly manual, without changes. If you modify it, or deviate, of course you may need to make your own measurements etc.

2) Whether or not a metal case is required from an RF perspective is an interesting question. I think more shielding never hurts. It may be more important in some (electronically noisy) environments than others. I think a superher receiver architecture, which QSX is NOT, requires more shielding. I no not expect it to make much difference to QSX. As far as heat dissipation is concerned, QSX has a generous and substantial heatsink for the rated power. It does not rely on a metal case to dissipate heat as some radios do. A 3D printed case should work just fine I think; it would also make for a lighter package for portable operations. I know of one of the YOTA participants who plans to design a 3D printed case for his QSX.

73 Hans G0UPL 
 


Re: QSX Enclosure Request

db9pz@...
 

Dear Dave,
Again, looking at the second part of your message you made.

Hans is not the manufacturer of the/this radio, it is only a kit.

You are reponsible for what your 'buildt'.
You are a HAM-radio operator. It's your 'problem' what you 'set in the air', not Hans.
He can't looking over your shoulders, when your mixed some parts on the circuit-board, and then you will not met the 'regulations'. 
Or, if you take a different size of wire, or a wrong type of ferrite-core,  ... and so on, and so on, ... !
It's only you, who buildt that radio.
Again, Hans delivers only the kit, you make a radio out of this kit! You are a skilled HAM-RADIO-OP! You are the man/woman who pushes the PTT/CW-key. And if you have to make some alterations on the kit, it could be the 'salt in the soup', or the difference between a good and a 'much better' radio.
But this is your choise, ...
 
Hope to meet you with a QSX-TRX or maybe my beloved 'one-watter's', on 20m, 30m or 40m, on the air,...
(All very 'QRPp' !)

73 de Markus ; db9pz


Re: QSX Enclosure Request

Arv Evans
 

With some expensive electro-luminescence coatings we could even have the units change
color from black when OFF, green when Receiving, and red when Transmitting.
8-)

_._


On Thu, Sep 20, 2018 at 8:13 AM Ross Wilson <rzzzwilson@...> wrote:
Hans,

Can I suggest that each kit have its own unique colour, with the QCX being natural aluminium, the QSX black, perhaps, and so on.

Ross, vk4fawr

On Thu, 20 Sep 2561 at 20:59 Dave, W0DF <dfine100@...> wrote:
You have hit the nail on the head Hans, do what you think is the best business decision for QRPLabs.  It is ridiculous to think that you can provide everyone's favorite color, or that you will sell one less QSX kit because the case is lime green or cherry picking red rather than natural aluminum.  My only concern is that as delivered,  it is a radio that is legal to operate on the advertised bands without having to do extensive modifications, not one with spurious emissions all over the place.  I don't give a tinker's damn what color the case is.


Re: T1 windings

Arv Evans
 

The idea that toroid cores might cause a short comes up fairly regularly. 
If you perform an ohmmeter test across most cores you will find that they
are not conductive.  Even if the cores are metallic, the binder (glue) isolates
metal dust particles from other metal dust particles resulting in very high
resistance across the core material.
_._


On Thu, Sep 20, 2018 at 6:07 AM robert tharp <rtharp0001@...> wrote:
If the enamel coating on T1 windings is stripped back too far, can the winding contact the (bare) bottom side of the core and cause a short?

No,   Robert





Re: QSX Enclosure Request

 

Always fun to watch the conversations from a group of builders. And building kits from Hans has been enjoyable for years.
I would like to hear from the Master himself, whether a metal case is a must or if there is a problem using a 3D printed case. The 3D printed is certainly cheaper, and of course, comes in a variety of colors!  There are a few different designs available on www. thingiverse.com and more showing up almost monthly.

Frank   W1FRA 

On Thu, Sep 20, 2018 at 12:46 PM Al Clark <hotdogx@...> wrote:
Apologies, I didn't mean to stir things up so much regarding case color - I can see this discussion is taking away from Hans' valuable time.  I will be building a QSX regardless of color, so whatever works best for Hans is OK with me.  If one is so inclined, it would be easy to change the color of the painted case, and re-apply the appropriate labels.  Most hams are adept at this sort of thing.
--
Al KD4EO


Re: QSX Enclosure Request

Al Clark
 

Apologies, I didn't mean to stir things up so much regarding case color - I can see this discussion is taking away from Hans' valuable time.  I will be building a QSX regardless of color, so whatever works best for Hans is OK with me.  If one is so inclined, it would be easy to change the color of the painted case, and re-apply the appropriate labels.  Most hams are adept at this sort of thing.
--
Al KD4EO


Re: QSX Enclosure Request

Arv Evans
 

Next thing someone may request is a color fade from maybe pink on one end and
dark green on the opposite end.  Might even be a tiny market for camouflage paint
patterns.   8-)
_._


On Thu, Sep 20, 2018 at 4:31 AM Stephen Farthing G0XAR JO92ON97 <squirrox@...> wrote:
Hans, 

To simply things it might be best to offer a natural aluminium finish. People could then paint or anodise the case to whatever colour they want. Painting Aluminium is no big deal. It just needs roughing up with some emery paper, a coat of etching primer and a top coat of any of the colours of the rainbow. Two spray cans from the nearest car supply shop would be more than enough. 

Anodising is a tad trickier but well within the abilities of a practical minded amateur with a power supply. 

Regards from Hungary, 

Steve



Re: QSX Enclosure Request

jjpurdum
 

I think everyone probably agrees that Hans can't possibly stock different colors for the case. If someone is really unhappy with a black case, it can't be that hard to prepare the existing case for a coat of primer and finish it off with a touch Krylon in their favorite color.

Jack, W8TEE

On Thursday, September 20, 2018, 12:37:57 PM EDT, Arv Evans <arvid.evans@...> wrote:


Keeping a stock of multiple colored cases could cause the price to rise significantly.
_._


On Thu, Sep 20, 2018 at 12:43 AM Clint Sharp <cjaysharp@...> wrote:
I’d also be interested in a different case colour too, even a raw aluminium but other colours might be interesting, I’m sure the case manufacturers could offer many options at what could be only a small ‘extra cost’ option

I’ve got far too many ‘manly man ‘ black cased pieces of kit in my shack and it all blends in together. 

On Thu, 20 Sep 2018 at 06:41, Hans Summers <hans.summers@...> wrote:
Hi Al

That's an interesting request. I was planning black. It looks nice. 

I'm curious how often a radio is likely to be subjected to a hot sun during operation, such as Alabama... if it is that hot for the radio, wouldn't it be that hot for the operator too? Wouldn't you sit under a tree, or a shade of some sort? 

73 Hans G0UPL

On Thu, Sep 20, 2018 at 2:20 AM Al Clark <hotdogx@...> wrote:
I'm sure Hans is getting overwhelmed with QSX requests, but I had to throw this one in before the QSX gets too far along.  My request is please don't make the enclosure black.  When you have a xcvr outside in the hot Alabama sun, a black case gets really hot - too hot to touch in fact.  And the high enclosure temperature probably doesn't do the electronics and display much good either.  A light color is preferable, like white or yellow.  I suppose red or blue might be useable, but I imagine those would get fairly warm also.  Actually, a gold or yellow anodized enclosure would be nice, but I suppose anodizing would increase the cost.
--
Al KD4EO

--
Clint. M0UAW IO83

No trees were harmed in the sending of this mail. However, a large number of electrons were greatly inconvenienced.


Re: QSX Enclosure Request

Arv Evans
 

Keeping a stock of multiple colored cases could cause the price to rise significantly.
_._


On Thu, Sep 20, 2018 at 12:43 AM Clint Sharp <cjaysharp@...> wrote:
I’d also be interested in a different case colour too, even a raw aluminium but other colours might be interesting, I’m sure the case manufacturers could offer many options at what could be only a small ‘extra cost’ option

I’ve got far too many ‘manly man ‘ black cased pieces of kit in my shack and it all blends in together. 

On Thu, 20 Sep 2018 at 06:41, Hans Summers <hans.summers@...> wrote:
Hi Al

That's an interesting request. I was planning black. It looks nice. 

I'm curious how often a radio is likely to be subjected to a hot sun during operation, such as Alabama... if it is that hot for the radio, wouldn't it be that hot for the operator too? Wouldn't you sit under a tree, or a shade of some sort? 

73 Hans G0UPL

On Thu, Sep 20, 2018 at 2:20 AM Al Clark <hotdogx@...> wrote:
I'm sure Hans is getting overwhelmed with QSX requests, but I had to throw this one in before the QSX gets too far along.  My request is please don't make the enclosure black.  When you have a xcvr outside in the hot Alabama sun, a black case gets really hot - too hot to touch in fact.  And the high enclosure temperature probably doesn't do the electronics and display much good either.  A light color is preferable, like white or yellow.  I suppose red or blue might be useable, but I imagine those would get fairly warm also.  Actually, a gold or yellow anodized enclosure would be nice, but I suppose anodizing would increase the cost.
--
Al KD4EO

--
Clint. M0UAW IO83

No trees were harmed in the sending of this mail. However, a large number of electrons were greatly inconvenienced.


Re: QSX Enclosure Request

Don Baker
 

I don’t understand why anyone would sit in the hot summer sun and not be able to place the minimal amount of shade on the rig with the box/case/knapsack that one brought it there with. If nothing else is available then sit with back to sun and shade with body. I would prefer to sit in a bit of shade myself and not be subject to heat stroke, especially in the “hot’ Alabama sun.

db
wb9sts


On Sep 20, 2018, at 5:36 AM, Alan de G1FXB via Groups.Io <g1fxb@...> wrote:

Thanks Hans,

That IS small,
the QSX front panel width is shorter than the U3 case depth!
any idea on rx / tx current draw, so we can judge battery requirements?
I'll have to get measuring....

My comment about black was "to match" the existing classy QRP Labs cabinets rather than for heatsinking properties, for have the finned bit for that...
(Plenty of commercial product heatsinks retain a bare Alu finish.)

After a couple a weeks of sun, the UK is nearer to 13 rather than your 33 degrees.
100kph winds for the weekend if you believe our (IN)accurate forecasters....

the QSX will need an inbuilt de-icing option.:-[
or just bolt a 7805 to the case


Alan

On 20/09/2018 10:52, Hans Summers wrote:
Hi Alan

QSX enclosure outside dimension is 145w x 68h x 73d mm. The heatsink protrudes 25mm at the back panel. The knobs protrude 10mm at the front panel.

Even despite not really having an idle moment I googled a bit more about heatsinks (as far as black/white colour etc is concerned, radiation and absorption are equivalent). It seems that colour is a matter of preference, making a nice smooth protected finish, etc. There is not a significant heat absorption/emission benefit. 

What I read reinforces my opinion. I believe it will be the same with the QSX enclosure. Colour isn't going to save it from getting hot in the sun. It will make little, if any, difference. From your perspective colour should come down to personal taste. From my perspective it is a matter of pricing and logistics. 

73 Hans G0UPL

On Thu, Sep 20, 2018 at 12:28 PM Alan de G1FXB via Groups.Io <g1fxb=yahoo.co.uk@groups.io> wrote:
Hi Al,
for trail carry I use army surplus pouches mainly for convenience & bash protection here in the UK rather than thermal reasons.....
though i'm sure that would also provide the required sufficient thermal protection in your situation.
(May have to make a cut out in the bottom of the pouch in the case of the QSX for the heat sink)

It's hard to judge size from the images supplied so far, only a little wider than the U3 case and 1/3rd / 1/2 as deep?
It looks to be able to fit in something similar to a US 100 / 200 Round pouch,
if it proves too small the 300 Round bag will possibly in addition hold batteries, AMU, and simple wire antennas...
or in Europe and NATO countries, the respirator / field bag are more easily sourced?

I believe IO groups already support polling?
I would vote for black to match the previous high quality anodized finished QRP Labs cases.....

Alan

On 20/09/2018 00:20, Al Clark wrote:
I'm sure Hans is getting overwhelmed with QSX requests, but I had to throw this one in before the QSX gets too far along.  My request is please don't make the enclosure black.  When you have a xcvr outside in the hot Alabama sun, a black case gets really hot - too hot to touch in fact.  And the high enclosure temperature probably doesn't do the electronics and display much good either.  A light color is preferable, like white or yellow.  I suppose red or blue might be useable, but I imagine those would get fairly warm also.  Actually, a gold or yellow anodized enclosure would be nice, but I suppose anodizing would increase the cost.
--
Al KD4EO




QCX 20 meter low outp

Dick de V
 

Hi,

I built my QCX 20 meter ( serial # 5408 ) a few weeks ago and it worked at the first power on. So I was very happy. I checked this group on a regular basis and found the topics discussing low power output on 20 meter.
I built my QCX like the manual with the original number of turns on the toroids L1 L2 and L3 and my output was a little over 1 watt. So I removed 1 Turn of L1, L2 and L3.
Now the output increased. Output was now at 13.8 V. 2.60 watt on the internal wattmeter. ( a little over 1.5 Watt on my Diamond SX-1000 ).
The following measurement I did using a dummyload and used the internal wattmeter (menu item 9.2)

14.020 MHz output 2.60 Watt
13.500  2.80 Watt
13.000  3.04 Watt
12.000  3,52 Watt
11.000  3,91 Watt
10.000  4.52 Watt
I connected my antenna and heard LZ920MLC on 10.117 MHz and was able to make a QSO :-) , that was fun!!

Today I removed toriod L1, L2 and L3 again and removed another winding like Hans is suggesting ( removing 2 turns of L1, L2 and L3 in case of low power output ).
L2 is now 15 turns and L1 and L3 both have 14 turns.
The output didn't increase much, only 0.1 Watt.
What could be wrong?
I am still very happy with my QCX and make QSO's every day, but I like to find the reason for low output.
Any suggestions are appreciated very much.

Dick  DL1CLM

 


Re: QSX Enclosure Request

Ross Wilson
 

Hans,

Can I suggest that each kit have its own unique colour, with the QCX being natural aluminium, the QSX black, perhaps, and so on.

Ross, vk4fawr

On Thu, 20 Sep 2561 at 20:59 Dave, W0DF <dfine100@...> wrote:
You have hit the nail on the head Hans, do what you think is the best business decision for QRPLabs.  It is ridiculous to think that you can provide everyone's favorite color, or that you will sell one less QSX kit because the case is lime green or cherry picking red rather than natural aluminum.  My only concern is that as delivered,  it is a radio that is legal to operate on the advertised bands without having to do extensive modifications, not one with spurious emissions all over the place.  I don't give a tinker's damn what color the case is.


Re: QSX Enclosure Request

David Fine
 

You have hit the nail on the head Hans, do what you think is the best business decision for QRPLabs.  It is ridiculous to think that you can provide everyone's favorite color, or that you will sell one less QSX kit because the case is lime green or cherry picking red rather than natural aluminum.  My only concern is that as delivered,  it is a radio that is legal to operate on the advertised bands without having to do extensive modifications, not one with spurious emissions all over the place.  I don't give a tinker's damn what color the case is.