Re: QMX Hi Band Noise Problem
Kit. But if there is a problem with the ADC due to fabrication or bad parts I think Hans will have to know. Then I haven’t the equipment to do a swap of the chip.
73/Mikael
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Mikael (SM7UDB)
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#120175
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Re: 50w QCX amp with grounded ptt (elecraft k2)
Thanks Larry.
By
casey@...
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#120174
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Re: QMX Hi Band Noise Problem
Mikael,
Is your radio factory assembled or a kit?
JZ
[email protected]> wrote:
By
John Z
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#120173
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Re: QMX Hi Band Noise Problem
I have posted a ticket on QRPLabs website and have given Hans some pics and screen dumps. I am awaiting his next response. But as it is Easter ? I do not expect anything until it is over.
73 de
By
Mikael (SM7UDB)
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#120172
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Re: ARRL Technical Innovation Award.
FYI Nominations <http://www.arrl.org/technical-innovation-award> must be received at Headquarters by March 31. Additional support information must be received at ARRL Headquarters by April 15.
Don't
By
Steven Dick, K1RF
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#120171
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Re: ARRL Technical Innovation Award.
Rowan,
Thanks for that.
Done
73/72
John
M0JBA
By
John Baines
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#120170
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Re: ARRL Technical Innovation Award.
John,
The nomination already exists.
Just email Steve Ewald ( sewald@... ) to add your endorsement.
73.
Rowan.
G0KLH.
By
Rowan G0KLH
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#120169
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Re: ARRL Technical Innovation Award.
I am in the process of nominating Hans.
What should I use for his address, phone and email address - his QRZ entry seems to be out of date.
73
John
M0JBA
By
John Baines
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#120168
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Re: Possible short? QMX 20-10 Rev 3.
Excellent.. thank you.
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samcgill2001@...
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#120167
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Re: Possible short? QMX 20-10 Rev 3.
Hi Scott,
T507 does provide a DC short to the BNC connector.? It is normal.
73
Evan
AC9TU
By
Evan Hand
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#120166
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Possible short? QMX 20-10 Rev 3.
Before I add the BNC connector I am measuring a short between the BNC centre and ground. I suspect this is not correct but I'm not certain?? Is is possible this was caused by the neigbouring
By
samcgill2001@...
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#120165
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Re: ARRL Technical Innovation Award.
Done!!
By
EA3IKB
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#120164
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QMX No Power On -- I Hear a Click But NO USB Link to Computer
Sorry to bring this up, but I've seen threads with no solution.
Having just completed what I thought was a very careful build of the QMX, I get no response other than a clicking sound both when I
By
Bill Jobes
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#120163
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Re: Bricked my QMX?
Hi Don.
Just to be sure, you had mentioned that you had been using your "standard 12v supply" with your QMX. Does that power supply provide exactly 12v?
The reason I ask is that my "standard" power
By
Roy - KI0ER
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#120162
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A “Must read me First” reference for QDX/QMX users
In my quest for understanding “What the %#@& ( %@6 ) am I doing!” while Googling about the Internet, I came upon the following resource that most (perhaps all) users of the digital modes (Using
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Gary O'Neil
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#120160
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Re: 50w QCX amp with grounded ptt (elecraft k2)
W8DIZ “Diz,” from Kits and Parts SK, R.I.P had a really cool way to do this-
Use a 78L05 regulator tied to the amp B+ in (~22V in the QRP Labs case)
Tie the output of the regulator to amplifier
By
Larry Acklin
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#120159
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50w QCX amp with grounded ptt (elecraft k2)
Hey all,
I suspect this has been asked and answered, but I cannot find it.
I have an elecraft k2 with an amp keyer jack that is an open drain output and is pulled to ground during transmit. I would
By
casey@...
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#120158
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New Chat: QCX revision 4 build problems
#chat-notice
A new chat has been created:
Hello,
I've finally finished my QCX (40m), which I purchased in 2019. Surprise, surprise it does not work.
I'm hoping it is not due to me having to substitute NTE490
By
Group Notification <noreply@...>
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#120157
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Re: Mid-band QMX?
That might be a typo in my notes. I used the same torroids in the QMX kit.
For L401 I used the one from the high band kit.
73,
Bill, N6MTB
By
Bill Porter
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#120156
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Re: Inexpensive Scope for Troubleshooting QMX
I must agree with you about the 465.? I had one on a cart that I used nearly daily for 20 years.? Even when I had a Tek 7904 with all sorts of plugins, it was just too big for my shack workbench, so
By
Mark K9TR
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#120155
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