Re: Multi band QCX plus Party time...
The only thing I found on the 10W smart dummy load.
?Nick,
That LED dummy load is kit I built 10 or more years back and have long since lost the manual.
The pcb is marked such...
XTAL SET SOCIETY
10W SMART DUMMY LOAD
My web search found 'dot net' and 'dot com'
and this...
?
... but no help with my kit.
Maybe you will have more luck other than gQQgle
The high Watt resistors (image) are 300 Ohm each
Based on the low Watt resistors;
one set of 4 (1000 Ohm) and
second set of 4 ( 100 k Ohm)
?l?? >auusme<??? four of the diodes are zener ...
????? and maybe all different voltage
???? >else<? how would one 'calibrate'? 1W, 2W, 5W 10W
???? with any degree of accuracy?
?????
and other 4 diodes maybe something like 1n 4148 or 914
I also >assume<? LEDs? are? 'low'? current type
The rf ground plane (second image) prevents reverse engineering a schematic.
72 73
John
N3?AZ
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Re: Multi band QCX plus Party time...
?
Nigel,
Please l apologizes
for I wander off topic
72 73
John
N3AAZ
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Re: Multi band QCX plus Party time...
Hey John,
There is always that handy multi-meter for helping with reverse engineering efforts :0)
72 / 73,
Bill, N4QA
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Re: Multi band QCX plus Party time...
I'm working on a Mini Dummy Load, which has the same OLED display as the Nov, 2018, QST dummy load (DL):
but instead of the resistor network and quart can of mineral oil, which makes it less desirable for SOTA, IOTA, etc. work, we're using one of these:
While this says its rated at 150W, it's about the size of the first joint of your little finger and it will NOT dissipate 150W without a lot of help. This picture shows the (4") heat sink
we're adding to the back of the DL case. We tested one at 100W for about 45 seconds only to see the top half travel at the speed of light past our ears! Seriously, it literally past us before the sound got to us! We feel very safe rating it at 35W with the heat sink. It's small enough to fit in your shirt pocket, but still let you tune up politely on the air. The OLED display is driven by a Nano using essentially the same code and circuitry as the article. I have a couple of 250W units coming and will see what they can stand.
Jack, W8TEE
On Wednesday, April 17, 2019, 9:08:44 AM EDT, John Kirby <n3aaz_qrp_1@...> wrote:
?Nick,
That LED dummy load is kit I built 10 or more years back and have long since lost the manual.
The pcb is marked such...
XTAL SET SOCIETY
10W SMART DUMMY LOAD
www.midnightscience.com
My web search found 'dot net' and 'dot com'
and this...
?http://www.njqrp.club/Rainbow/rb_schem.html
... but no help with my kit.
Maybe you will have more luck other than gQQgle
The high Watt resistors (image) are 300 Ohm each
Based on the low Watt resistors;
one set of 4 (1000 Ohm) and
second set of 4 ( 100 k Ohm)
?l?? >auusme<??? four of the diodes are zener ...
????? and maybe all different voltage
???? >else<? how would one 'calibrate'? 1W, 2W, 5W 10W
???? with any degree of accuracy?
?????
and other 4 diodes maybe something like 1n 4148 or 914
I also >assume<? LEDs? are? 'low'? current type
The rf ground plane (second image) prevents reverse engineering a schematic.
72 73
John
N3?AZ
|
Re: Multi band QCX plus Party time...
?Nick,
That LED dummy load is kit I built 10 or more years back and have long since lost the manual.
The pcb is marked such...
XTAL SET SOCIETY
10W SMART DUMMY LOAD
www.midnightscience.com
My web search found 'dot net' and 'dot com'
and this...
?http://www.njqrp.club/Rainbow/rb_schem.html
... but no help with my kit.
Maybe you will have more luck other than gQQgle
The high Watt resistors (image) are 300 Ohm each
Based on the low Watt resistors;
one set of 4 (1000 Ohm) and
second set of 4 ( 100 k Ohm)
?l?? >auusme<??? four of the diodes are zener ...
????? and maybe all different voltage
???? >else<? how would one 'calibrate'? 1W, 2W, 5W 10W
???? with any degree of accuracy?
?????
and other 4 diodes maybe something like 1n 4148 or 914
I also >assume<? LEDs? are? 'low'? current type
The rf ground plane (second image) prevents reverse engineering a schematic.
72 73
John
N3?AZ
|
Re: Stock QCX-17 running a CW beacon on 12m again today
But, Geoff,
That key word which you used, not once, but twice...reminded me of that beautiful song by David Gates & Bread.
For that, I thank you !
"...then you & I would simply fly away !"
72 / 73,
Bill, N4QA
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?The s-meter is useful to give you a millisecond warning to turn down the gain before your eardrums break. I've learned to live without it, but would gladly implement some form of AGC, even if audio-based.?
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Re: QCX 1.00d firmware upgrade failed
Hi Guido
I will contact you off-list about this.?
73 Hans G0UPL
On Wed, Apr 17, 2019 at 10:50 AM Guido PE1NNZ < threeme3@...> wrote: Good morning Hans,
After upgrading my QCX firmware T1.00d to T1.00g, I get the message "Use original IC!", and flashing back to original T1.00d does not seem to work either.
Well, I am using the original IC, but I suspect that the upgrade has overwritten some essential settings?
Can I get your instructions to resolve this?
Regards, Guido
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QCX 1.00d firmware upgrade failed
Good morning Hans,
After upgrading my QCX firmware T1.00d to T1.00g, I get the message "Use original IC!", and flashing back to original T1.00d does not seem to work either.
Well, I am using the original IC, but I suspect that the upgrade has overwritten some essential settings?
Can I get your instructions to resolve this?
Regards, Guido
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Re: Looking for a QRSS Transmitter Kit
Hi Razvan
I do have one of the original kit PCBs. I will email you off-list about it.?
73 Hans G0UPL
On Wed, Apr 17, 2019 at 10:47 AM < dl2arl@...> wrote: Hello,
I am looking for an old, long retired "QRSS Transmitter Kit", no matter in what shape, no matter what band; even a naked PCB would be great (hoping that somebody else from the group will help me with the "professor" for it). Thank you!
..yes, I am aware that there is a new Ultimate 3S kit available, but I still long for the old kit housed in it ?s plain pepermint box, take anytime anywhere, no frills, no menues to set and display to watch, just push the button and enjoy.
73 de Razvan DL2ARL at qsl dot net
QRSS Transmitter Kit was produced in 30, 40, 80 and 160m versions from May 2010 onwards. The kit is no longer available and the following information is provided for information purposes only.
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Looking for a QRSS Transmitter Kit
Hello,
I am looking for an old, long retired "QRSS Transmitter Kit", no matter in what shape, no matter what band; even a naked PCB would be great (hoping that somebody else from the group will help me with the "professor" for it). Thank you!
..yes, I am aware that there is a new Ultimate 3S kit available, but I still long for the old kit housed in it ?s plain pepermint box, take anytime anywhere, no frills, no menues to set and display to watch, just push the button and enjoy.
73 de Razvan DL2ARL at qsl dot net
QRSS Transmitter Kit was produced in 30, 40, 80 and 160m versions from May 2010 onwards. The kit is no longer available and the following information is provided for information purposes only.
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Hi Trueblue,
thanks for the update. I did try a beta version (v3.13y) over a year ago, mainly for the 'potentiometer tune' modification fix, and wondered if I had missed a follow-up. However, there was no FT8 option then.?
73 Ken G4APB
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On Tue, Apr 16, 2019 at 09:40 AM, KEN G4APB wrote:
did you ever formally release this version?
No, he hasn't. I've been following this since 2017 and the current state of affairs (as I understand it)? is that Hans is still intending to do the FT8-capable firmware update, but: 1:? He's still fully occupied with getting the new kit out, and... 2:? He ran into a problem getting FT8 to run, which stopped a relatively easy firmware upgrade, though... 3:? A user devised a recent fix for the problem, which Hans tested and found to be working fine, and... 4:? The user got a free QCX kit which... 5:? Puts the U3S firmware back on the to-do list after the new kit is released. Corrections and updates welcomed.
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Great rig and clever box designed for it too.
But I'm another who also have the disappearing S-meter feature! It seems to disappear when various things in the menu are changed. I know it's not calibrated, but it's good to see it flicking up and down - at least when it's there! On-Off usually brings it back, until I change something else. :(
Ian
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Re: Stock QCX-17 running a CW beacon on 12m again today
QSL, Bill & Joe.
Geoff, the key word in your response is "If".
The simple fingertips test at Q1,Q2,Q3 during prolonged key down says there is nowhere near such power being dissipated by the finals...they are, in fact, quite cool.
72 / 73 all,
Bill, N4QA
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Re: Stock QCX-17 running a CW beacon on 12m again today
There is another opiton: At $50.00 ea.? Build one for each band of interest!
Hi,
Some people like to tinker. I know I like it. Making those QCX radios
work on other bands falls into that category. My own preference is to
start with a multi-band radio when I want a multi-band radio but where
is the challenge in that? I suppose that is why I am waiting for the QSX :)
73,
Bill? KU8H
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Re: Stock QCX-17 running a CW beacon on 12m again today
Hi,
Some people like to tinker. I know I like it. Making those QCX radios work on other bands falls into that category. My own preference is to start with a multi-band radio when I want a multi-band radio but where is the challenge in that? I suppose that is why I am waiting for the QSX :)
73,
Bill KU8H
toggle quoted message
Show quoted text
On 4/16/19 1:46 PM, geoff M0ORE via Groups.Io wrote: If your transmitter output stage is generating a few Watts but you are seeing only 200mW output after a LPF designed for a lower cutoff, then you should be asking yourself " Where is that surplus power going?" The answer I suspect is as heat in the output transistors. If you need to operate at a different frequency than the original design, then re-configure the LPF.
On 16/04/2019 13:48, n4qa at_hotmail.com wrote:
In an attempt to prove that she's an eight-band QCX rig, the stock QCX-17 is running a CW beacon, somewhere within the lower 5 kHz of the USA 12 meter band.
Power output is 200 milliwatts and the antenna is the GADS! ( Gutter And Down Spout ! ).
Looking at RBN spots for signs of world-wide CW activity at:
shows...see screen shot below.
It's a long shot but my stock QCX-17 doesn't seem to mind...
72 / 73,
Bill, N4QA
--
bark less - wag more
|
Heh,
We already know when Christmas. We get the excitement of anticipation with these deliveries. I think I saw a shadow move...maybe my shipment getting close :)
73,
Bill KU8H
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Show quoted text
On 4/16/19 10:39 AM, dwinflorida@... wrote: I've done a fair amount of international ordering, and I do see it vary widely from country to country. This is my first time with a shipment from Turkey, and I'd put them on the slower end of the scale, last update I show is on 4-8 where the origin post is preparing to dispatch the mail piece. Experience has been that its possibly already left Turkey, next update will be on the US side when received.
In contrast, i just placed an order with a Swedish supplier, standard post, and 2 days later, it is already in the US.
I think its a high compliment to Hans and his products that we're all waiting at the front door hoping today is the day the postman brings us our goodies, lol.
--
bark less - wag more
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Re: Stock QCX-17 running a CW beacon on 12m again today
If your transmitter output stage is generating a few Watts but
you are seeing only 200mW output after a LPF designed for a lower
cutoff, then you should be asking yourself " Where is that surplus
power going?" The answer I suspect is as heat in the output
transistors. If you need to operate at a different frequency than
the original design, then re-configure the LPF.
On 16/04/2019 13:48, n4qa
at_hotmail.com wrote:
toggle quoted message
Show quoted text
In an attempt to prove that she's an eight-band QCX rig, the stock
QCX-17 is running a CW beacon, somewhere within the lower 5 kHz of
the USA 12 meter band.
Power output is 200 milliwatts and the antenna is the GADS! (
Gutter And Down Spout ! ).
Looking at RBN spots for signs of world-wide CW activity at:
shows...see screen shot below.
It's a long shot but my stock QCX-17 doesn't seem to mind...
72 / 73,
Bill, N4QA
|
Hi Hans,
did you ever formally release this version?
73 Ken G4apb?
|
jjpurdum
DL2ARL
TrueBlue