On 31/08/2023 15:16, Paul Harrison via groups.io wrote: offering an Enterprise edition that keeps all company data private and safe. And that's what I would tell everyone as a provider of AI services whilst ensuring I was able to mine and use all the private data to train my model and make money off what the customers where doing. Remember: if your data/info is not on a computer in your server room on your premises then it's in someone else's computer and is only notionally secure.
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On Fri, Sep 1, 2023 at 05:32 AM, Andre - WT9X wrote:
What in the hell does any of this have to do with QRP Labs? Andre, WT9X
Andre, why not put that question to ChatGPT? Randy, K7RAN?
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Re: #QMX Finished assembling main board
#qmx
Very interested in hearing about the "smoke test", and first
usage!
I ordered mine yesterday!
...Dave
On 9/1/23 7:23 AM, Steven Dick, K1RF
wrote:
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I am happy to report I finished assembling the main board in
the QMX.? It was quite a rewarding experience.? Easy stuff left
to complete in a few hours.? I decided to build for 12V because
various sources of 12V power are much more readily available
than 9V.? I just need to build up a "test" power supply for 7V
and current limit at 250mA.? I have all the parts for it. The
more challenging area was the crowded LPF toroid area.? Don't
use too much solder here or you will be using copper braid a
lot, and inspect carefully as you go.? I did use a heaver
soldering iron for the joints that needed it, such as the BNC.?
It was a Haiko FX-601-02, about 67 watts, light weight,? with a
ceramic element. Not inexpensive, but has not failed after many
years of use.? Just don't drop it or you can damage the ceramic
element.? Popular with the stained glass crowd.? But I have to
tell ya - you need to be very careful in not damaging any nearby
SMT parts when using it.??
?
Think I'll celebrate by watching a 1972 Sci Fi movie entitled
"Beware the Blob!"..
-Steve K1RF?
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Re: QMX Shipped, panic stage
#qmx
Karl, you sent this to the WRONG topic and guy. NOT ME! Checking all messages sent on groups.io, I found the original message as below. Not upset, trying to help both of you.
["Dire need of a part
David R Hassall WA5DJJ
Dear group,
While convalescing with all the ills I have acquired since July 4th, I decided to dig into my kit pile and spend the time building the neat kits that I had bought. ? While working on a QDX Rev
3, I was building along and noticed that L11 looked funny. ? It was broken in half. ? I may have done it or some shipper may have. ?I am not concerned with "who killed John". ? I just need a part. L11 is a SMD 47uh choke. ? I thought I had a "hanger queen"
QDX but I think someone else got it when they need a part.
So I need an SMD 47uh choke for my QDX. ? Does anyone have a stock of them that would part with one or two? ? I will pay postage etc. as required.
and if you bought them I will pay for two. ?I just need the part and don't think that DigiKey ?would be happy for a order and the postage would not be pretty.
Thanks for the time and I hope I can come up with one of these so I can get my QDX running. ? Address is good in QRZ .
73 Dave WA5DJJ
SUPER GRABBER https://www.qsl.net/wa5djj/
?WEBSITE: ? "]
Send Dave WA5DJJ this information, I am sure he will appreciate it.
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Have you checked this yet?
--
73
Karl
KI4ZUQ
-- N5SE
Billy Wayne Moore
7066 Shady Knoll Ln
Willis, TX 77318-6324
Phone: 936-537-2975???
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What in the hell does any of this have to do with QRP Labs?
Andre, WT9X
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#QMX Finished assembling main board
#qmx
I am happy to report I finished assembling the main board in the QMX.? It was quite a rewarding experience.? Easy stuff left to complete in a few hours.? I decided to build for 12V because various sources of 12V power are much more readily available than 9V.? I just need to build up a "test" power supply for 7V and current limit at 250mA.? I have all the parts for it. The more challenging area was the crowded LPF toroid area.? Don't use too much solder here or you will be using copper braid a lot, and inspect carefully as you go.? I did use a heaver soldering iron for the joints that needed it, such as the BNC.? It was a Haiko FX-601-02, about 67 watts, light weight,? with a ceramic element. Not inexpensive, but has not failed after many years of use.? Just don't drop it or you can damage the ceramic element.? Popular with the stained glass crowd.? But I have to tell ya - you need to be very careful in not damaging any nearby SMT parts when using it.??
?
Think I'll celebrate by watching a 1972 Sci Fi movie entitled "Beware the Blob!"..
-Steve K1RF?
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Re: #QMX #BPF problems with fault finding
#qmx
#bpf
Thanks Mike, I will try tonight and report.
---------------------------------
73 de Marek SP9TKW
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GPS disciplined oscillator.
Hello,
I'm wondering if I can use the Progrock2 with the QLG2 to form a GPS disciplined oscillator that I can use with my Adalm Pluto requiring 40MHz local oscillator?
Thanks in advance,
Roger (G8VLR).
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Re: QMX Shipped, panic stage
#qmx
Have you checked this yet?
--
73
Karl
KI4ZUQ
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Re: QDX Low Receiver Sensitivity and no TX
UPDATE: ?I replaced the transmit / receive switch Q6 and the ?rig is operating normally again.?
Jerry
N6JH
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Re: #QMX #BPF problems with fault finding
#qmx
#bpf
If you haven't, try a factory reset and retest.
-mike/w1mt
On Fri, Sep 1, 2023 at 6:35?AM Marek SP9TKW < sp9tkw@...> wrote: Hi All,
I hope you can help me to track down problem which I have with my BPF on newly build QMX. QMX is working ok and it is transmitting 3.5-4W at 9V, I also made QSO on 40m band.
Issue I have is that I can hear only strong stations where signal on my other rig is S8 or more.
Looking at my BPF plots at terminal I can see that I have big suppression on the bands from -30db to -50dB. I think this explains why my QMX has low sensivity.
I cheked capacitors C401-404 values and location, as well as resoldered coil L401
Here are key graphs and some photos of the board.
Any pointers would be greatly appreciared.
---------------------------------
73 de Marek SP9TKW
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Re: QMX Shipped, panic stage
#qmx
Billy,
Have you downloaded, printed, punched three holes and put in binder yet? No? Well, don't! I did when I first ordered the radio and built it WRONG!
Do print the most recent build instructions when you actually get the kit. Then print the operating instructions when you finish and know it works.
This? is the most challenging an satisfying kit I ever built. It has the best instructions I have ever seen. These are pretty tall observations after experiencing Heathkits in the 50's and 70's and the Elecraft K2.
I have no idea how Hans keeps up? with his creations and remains accessible to all of? us but he does, somehow. This appears to be the most active forum anywhere on the internet. Welcome to the zoo!
--
73
Karl
KI4ZUQ
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#QMX #BPF problems with fault finding
#qmx
#bpf
Hi All,
I hope you can help me to track down problem which I have with my BPF on newly build QMX. QMX is working ok and it is transmitting 3.5-4W at 9V, I also made QSO on 40m band.
Issue I have is that I can hear only strong stations where signal on my other rig is S8 or more.
Looking at my BPF plots at terminal I can see that I have big suppression on the bands from -30db to -50dB. I think this explains why my QMX has low sensivity.
I cheked capacitors C401-404 values and location, as well as resoldered coil L401
Here are key graphs and some photos of the board.
Any pointers would be greatly appreciared.
---------------------------------
73 de Marek SP9TKW
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Re: After the first firmware, it is no longer possible to switch on.
Thank you very much for your advice. I was able to find the error. It was a short circuit on the encoder. I had finished the kit last night and wanted to get started quickly. But as Hans said in his last Youtube video - take your time, take it easy, don't be in a hurry. Then it will work :-)
73 Marcel DM3FAM
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Re: QDX rev 5 Troubleshooting
Hi Evan, no prob’s we are all human :-)
?
Looking at C27 on transmit I noticed that my oscilloscope was reporting 5v whereas my multimeter was showing 50v! All the readings below are with the multimeter including a re-done D1-6 cat.
Q3, Q4 and Q5 all look identical with SA printed on them
X6, I did notice that it’s labelled LPF _0 1 2, which I assume correspond to LPF 1 2 3, that tickled my OCD :-) I’ve used the PCB labelling below.
?
?
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X6 (multimeter)
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80
|
40
|
20
|
|
?
|
RX
|
TX
|
RX
|
TX
|
RX
|
TX
|
|
_0
|
3.2v
|
3.2v
|
0
|
0
|
0
|
0
|
|
1
|
0
|
0
|
3.2v
|
3.2v
|
0
|
0
|
|
2
|
0
|
0
|
0
|
0
|
3.2v
|
3.2v
|
|
?
|
?
|
?
|
?
|
?
|
?
|
?
|
|
?
|
?
|
?
|
?
|
?
|
?
|
?
|
|
C27 (multimeter)
|
80
|
40
|
20
|
|
?
|
RX
|
TX
|
RX
|
TX
|
RX
|
TX
|
|
?
|
Vs
|
46v
|
Vs
|
50v
|
Vs
|
50v
|
|
?
|
?
|
?
|
?
|
?
|
?
|
?
|
|
?
|
?
|
?
|
?
|
?
|
?
|
?
|
|
?
|
80
|
40
|
20
|
|
Diode cat (multimeter)
|
RX
|
TX
|
RX
|
TX
|
RX
|
TX
|
|
D1
|
0
|
0
|
5.7v
|
32.7v
|
5.8v
|
34.6v
|
|
D2
|
5.7v
|
32v
|
0
|
2.7v
|
5.8v
|
34.7v
|
|
D3
|
5.7v
|
32v
|
5.7v
|
32.7v
|
0
|
0.3v
|
|
D4
|
0
|
1.3v
|
5.7v
|
32.8v
|
5.8v
|
34.6v
|
|
D5
|
5.7v
|
32v
|
0
|
92.8
|
5.8v
|
34.6v
|
|
D6
|
5.7v
|
32v
|
5.7v
|
32.8v
|
0
|
75.4v
|
?
?
Chris
73 de M0IDE
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Re: QMX Shipped, panic stage
#qmx
There were so many post answering my message that I could not reply to each one. I thank each poster; past, present and future that tack another idea for the first QMX builder. All of the post back to me could become a wealth of information for the new QMX
builder. I know that I will compile them for use as I build mine. Let it be known that the panic stage was very short lived.
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Stephan Ahonen KE0WVA <stephan.ahonen@...> wrote:
> you will need a hot, powerful iron with plenty of thermal mass to make
> good joints in them.
This is a good advice. My 40 W soldering station was too weak (even with
the slightly larger tip than I usually use) and I had to use my stronger
(100 W) transformer gun for some joints.
Hans recommends 60 W iron and I think it should be fine.
> enamel on the thinner magnet wire used for filter toroids burns off just
> fine but the thicker magnet wire used for power magnetics will need to
> be sanded off.
I just used a knife.
-- N5SE
Billy Wayne Moore
7066 Shady Knoll Ln
Willis, TX 77318-6324
Phone: 936-537-2975???
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ps/ps
that is (hamSCI.org)
n3aaz
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?Hi Glenn
I have not built the mini but have several QCX here
Hans has a marvoules design try not to over think T1 on your first kit
Build you kit per latest assembly manual and enjoy QRP CW at its best
The onboard CW filter is a delight
Then later I enjoy ham radio at its best 'Experiments'
I read where others modify for special purpose
Bypass or mod the CW filter (how to search this list) for SSB? (upper or lower just goto MENU and REVERSE CW) and? WSPR for example
Yes QCX transmitts WSPR (FSK) but does not receive WSPR (FSK or SSB) you will need an app (k1jt) to decode WSPR after CW filter mod
Again In fact try not to over think T1
Hans kits are so well thought out they can and will function without T1 (ang how to here on this list) and become multi band (goto MENU then PRESETS)
Yes you loose some sensitivity on all bands but just add more antenna such as 132 ft InvL for example :>)
In some cases local high power broadcast can be an issue check out Hans wonderful low-pass es band-pass filter kits
see my? (qrz.com)? page?? 'QCX and fldigi captures WWV Twilight Zones' (no T1, no CW filter, no LCD (for power savings wnen batt ops)) while tooling up for 2023, 2024 eclips (hanSCI.org)
ps to share an ahHA-Plateau moment for me I discovered there are four DX Twlight Zones and four local Twlight Zones, Astronomical, Nautical,? Civil (first light), then SunRise for a total of eight that fldigi will save to a? ".cvs" file at one second intervals for EXCEL to plot :>))
yet just another facet on this marvoules ham radio hobby
72 73
John
N3AAZ
FM19 on DELMARVA Peninsula?
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?Try this
Sent from my iPhone 6
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It seems the schematic got dropped off here as well.? As attached
73
Ross 6
Begin forwarded message:
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From: Kabulldust <kabulldust@...> Date: 31 August 2023 at 15:25:02 GMT To: [email protected]Subject: 8m only QDX prototype
?Bob, Jim, et al,
Further to the 8/6m prototypes I previously posted, I’ll now post the details of an 8m only prototype.
Schematic
Analysis
Implementation
??BPF is 11t on an T50-6, squashed up so probably 12 loosely wound may do the trick and a 30pF cap
RF Filter sweep
TinySA measurement
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Randy K7RAN
N5SE
Andre - WT9X
Marek SP9TKW
Karl