Re: Dumb QMX question
Fancy Schmancy cable....(Hi Hi)
Not_So_Anonymous
By
Bob Finch
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#105165
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Re: New assembled High Bands QDX went into smoke
WB2CBA,
The Zener trick you mention has been around and written up by some others before. After I found out about it, I added 51 V 1 W Zeners to my QDX and incorporated them into my QMX. I have 3
By
Daniel Walter
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#105164
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QDX Low Band Version 5 not initializing
Hello I assembled a QDX Low Band Version 5. It powers on but does not flash quickly to initialize correctly. LED comes on steady and stays on. I power off and quickly back on it goes to firmware mode.
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William Wagaman
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#105163
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Re: Dumb QMX question
Cable not included. Get a cable does data. Some only charge. It'll be
obvious that it's data capable when it specs transfer speeds. Doesn't
matter what speed you get. This
By
mike/w1mt
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#105161
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Dumb QMX question
With the shipment of my QMX nearing I have a dumb question.? Is a USBC to USBA cable or adapter included with the kit or do I need to find one in my junkbox (doubt I have one) or buy one?? Is a C to
By
nz0tham@...
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#105160
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Re: New assembled High Bands QDX went into smoke
I of course don’t know from start to finish how firm all of the statements are but after having been in electronic for the best part of my working career, my guess failure was most likely due to a
By
KK4ITX John
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#105159
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Re: LunchboxesQCX
I was thinking having read something about a 50W PA. If this is like I understood, the QCX will see no harm: it will be the PA that will...
By
DL2ARL
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#105158
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Re: QMX L401 winding confusion
Mark,
As above, There is one section of 19 winds and another of 9 winds.? The photo in the assembly manual has one winding hidden beneath the arrow that says Jumper Wire.
The 9 wind segment begins
By
Jack Kibelbek
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#105157
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Re: QDX on 40 meters
PSKReporter.info says that QDX was just heard in European Russia by UB3PEP at -21 dB snr from a DX of 5138 miles.
Not sure I believe this one. Ten milliwatts @ 5138 mi on 40m in the east cost USA late
By
n4qa at_hotmail.com <n4qa@...>
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#105156
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Re: QMX L401 winding confusion
Good catch Mark - I didn't notice the picture in the upper right. Yes ignore that extra turn. At least I did and end on the 28th turn plus a jumper to the finish hole. Actually I just de-soldered all
By
Sandy
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#105155
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Re: New assembled High Bands QDX went into smoke
Thanks, I like Hans and his products but It is so frustrating, when you know the fault seems to be not in your own responsibility. I also got comments that zener diodes have no results of... yes
By
[email protected]
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#105154
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Re: New assembled High Bands QDX went into smoke
Hi Barb,
thanks I will try to replace the 4 BS170 and the 74ACT . In addition I will order two zener Diodes. But it is not easy to get these Zener diodes . High costs of shipping.
We know us from
By
[email protected]
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#105153
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Re: New assembled High Bands QDX went into smoke
Matt,
A ham friend of mine operated his QDX without any antenna connected by mistake.
I repaired my friend’s QDX which had damaged BS170s and IC5 74ACT08. After replacing those QDX worked
By
Barb WB2CBA
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#105152
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Re: New assembled High Bands QDX went into smoke
Experience is very contrary to that of most QDX users. Maybe when you calm down a bit you can send a somewhat more objective email and we can help you.
Mike
WM4B
Sent: Saturday, July 15,
By
Mike Besemer - WM4B
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#105151
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Re: New assembled High Bands QDX went into smoke
Matt,
That's why I dumped QDX, however, had I known about the simple zener-fix, then I might have stayed.. GL with QMX - someone at least saw fit to add Zeners!
73
By
ve3ega <ve3ega@...>
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#105150
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New assembled High Bands QDX went into smoke
I?m very angry about the tx quality of the high bands QDX, Rev 5. my first QDX high bands (rev3) was killed after a few day working good. I decided to buy a new one assembled. After 4 Months waiting
By
[email protected]
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#105149
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Re: QMX L401 winding confusion
Mark,
Sounds like you are using the old manual. Download the updated one. It will have the correct information.
Someone also posted this picture which shows it also.
73,
Cliff, AE5ZA
By
Cliff
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#105148
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Re: LunchboxesQCX
If the failure mode is overvoltage it can occur during a single dit, actually micro- to milliseconds.
73, Don N2VGU
By
Donald S Brant Jr
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#105147
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Re: QMX L401 winding confusion
Hi Mark,
There are 2 windings, the first 19 wnd and the 2nd 9 windings.
73's Jacques PA3EVZ
Op 15 jul. 2023 19:02, om 19:02, Mark Volstad - AI4BJ <mvolstad@...> schreef:
By
Jacques PA3EVZ
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#105146
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QMX L401 winding confusion
I built my QMX more than a month ago, then put it aside while awaiting for a solution to the 20M low sensitivity problem. I'm now ready to make the changes to L401 as described in the latest version
By
Mark Volstad - AI4BJ
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#105145
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