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#40m qcx+
#40m
Need a liitle help. What rig do you select in logging software to use the "cat' on the qcx+?
I see the port in my Device manager, but from there I am lost.
Don...w2xb
(using aclog by n3jfp)
Need a liitle help. What rig do you select in logging software to use the "cat' on the qcx+?
I see the port in my Device manager, but from there I am lost.
Don...w2xb
(using aclog by n3jfp)
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By
Don Blachura
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#52703
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Re: QCX #smoked ?
#smoked
Most of the "12V" power supplies sold to hams are really 13.8V supplies out of the box. (Many of them can be adjusted with an internal trimmer.) A lot of ham gear is designed to operate best at that
Most of the "12V" power supplies sold to hams are really 13.8V supplies out of the box. (Many of them can be adjusted with an internal trimmer.) A lot of ham gear is designed to operate best at that
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By
Shirley Dulcey KE1L
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#52702
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Re: QCX #smoked ?
#smoked
Finals are ok !
By
John Sharman
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#52701
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Re: Thoughts on Low Power and fewer turns on LP filter toroids
Hi all
This problem has always come up at intervals on this group.
It used to be that we could blame suspect capacitors for being lossy since several were found on occasion.
Not any more! All
Hi all
This problem has always come up at intervals on this group.
It used to be that we could blame suspect capacitors for being lossy since several were found on occasion.
Not any more! All
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By
Hans Summers
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#52700
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Re: QCX #smoked ?
#smoked
Define kaput, and what item?
Likely fried the finals in the morning and during the day repeated tries finished the job.
THe PS I can only guess about.
Allison
-------------------------------
Please
Define kaput, and what item?
Likely fried the finals in the morning and during the day repeated tries finished the job.
THe PS I can only guess about.
Allison
-------------------------------
Please
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By
ajparent1/kb1gmx
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#52699
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Re: Thoughts on Low Power and fewer turns on LP filter toroids
Apart from soldering issues, this must be the most confounding disincentive for faint-hearted wonnabe QSX+ers ...
There must surely be a concise winding-checklist for genuine
Apart from soldering issues, this must be the most confounding disincentive for faint-hearted wonnabe QSX+ers ...
There must surely be a concise winding-checklist for genuine
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By
Michael.2E0IHW
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#52698
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Re: #u3s QCXPTXCO install
#u3s
just been playing with the 25mhz tcxo for q"C"x+ in a U3s.
QRSS is good to 2 meters! a little drift to start due to other components, BS170's ect, then it settles down nicely!
Much better than the fox
just been playing with the 25mhz tcxo for q"C"x+ in a U3s.
QRSS is good to 2 meters! a little drift to start due to other components, BS170's ect, then it settles down nicely!
Much better than the fox
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By
Dean Smith
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#52697
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Re: Thoughts on Low Power and fewer turns on LP filter toroids
In addition to Allison's comments, the filters are designed
to work with 50 ohms input impedance and 50 ohms output
impedance. If either of those impedances are not 50 ohms
the filter cutoff
In addition to Allison's comments, the filters are designed
to work with 50 ohms input impedance and 50 ohms output
impedance. If either of those impedances are not 50 ohms
the filter cutoff
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By
Arv Evans <arvid.evans@...>
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#52696
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QCX #smoked ?
#smoked
All working well on WSPR for weeks
This morning the display is acting weird and the buttons are sometimes not responsive
This afternoon the display stats flashing on and off with smell of burins from
All working well on WSPR for weeks
This morning the display is acting weird and the buttons are sometimes not responsive
This afternoon the display stats flashing on and off with smell of burins from
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By
John Sharman
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#52695
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Re: QRP-LABS Low Pass Filter upgrade
Also PCB conductor size and spacing are a factor as well.
For example 100W is 1.4A into 50 ohms so heavier and larger
relays become a factor.
20W is easy 50W takes care, more is significant
Also PCB conductor size and spacing are a factor as well.
For example 100W is 1.4A into 50 ohms so heavier and larger
relays become a factor.
20W is easy 50W takes care, more is significant
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By
ajparent1/kb1gmx
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#52694
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Re: Thoughts on Low Power and fewer turns on LP filter toroids
Phil,
THe AL used for winding of toroids has a variation of 10-15% so depending on
how tightly wound plus individual batches you get variation.
The Iron powder material is really like many high
Phil,
THe AL used for winding of toroids has a variation of 10-15% so depending on
how tightly wound plus individual batches you get variation.
The Iron powder material is really like many high
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By
ajparent1/kb1gmx
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#52693
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Re: QCX+ T1 Toroid Wire Length? #20m #qcx+
#20m
#toroid
Len,
Attached above is my input regarding an “antenna tuner” question asked last week.
73,
Bob – KG5SQJ
Len,
Attached above is my input regarding an “antenna tuner” question asked last week.
73,
Bob – KG5SQJ
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By
Bob Ballard
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#52692
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Thoughts on Low Power and fewer turns on LP filter toroids
I've completed a 20M QCX+ and have just fixed a friend's 30M QCX+. Both are working nicely, but at 13.1 volts I get about 3watts output on both, using the onboard RF tool to measure (and less on my
I've completed a 20M QCX+ and have just fixed a friend's 30M QCX+. Both are working nicely, but at 13.1 volts I get about 3watts output on both, using the onboard RF tool to measure (and less on my
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By
Phil/K3UT
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#52691
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Re: QCX+ T1 Toroid Wire Length? #20m #qcx+
#20m
#toroid
Hi, what is the gauge of the magnet wire supplied with the QCX+ kit for the toroids and transformer? Also, is there a particular antenna tuner or tuners that have been found to be most useful with
Hi, what is the gauge of the magnet wire supplied with the QCX+ kit for the toroids and transformer? Also, is there a particular antenna tuner or tuners that have been found to be most useful with
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By
Len W1LEN
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#52690
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Re: Select Button on Alignment QCX+ 20m
The left button (S2) completes a series circuit between
R44 (3.3K) and R46(10K), with R44 going to +5V and
R46 going to ground. If the right button (S3) works
properly then R46 is probably not the
The left button (S2) completes a series circuit between
R44 (3.3K) and R46(10K), with R44 going to +5V and
R46 going to ground. If the right button (S3) works
properly then R46 is probably not the
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By
Arv Evans <arvid.evans@...>
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#52689
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Re: QCX+ Display
#20m
On Tue, Sep 8, 2020 at 07:32 AM, Dave wrote:
Give it a bit of a tap. That might change things.That fixed 90% of the problems I ever had with my original Nintendo!
On Tue, Sep 8, 2020 at 07:32 AM, Dave wrote:
Give it a bit of a tap. That might change things.That fixed 90% of the problems I ever had with my original Nintendo!
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By
Michael N6MST
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#52688
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Re: QCX+ Display
#20m
Just hit them all with a soldering iron. You'll know it when you find it.
Mike
WM4B
Just hit them all with a soldering iron. You'll know it when you find it.
Mike
WM4B
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By
Mike Besemer - WM4B <mwbesemer@...>
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#52687
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Re: QCX+ Display
#20m
Great.
Last week at our LARC Kit Building session I examined a members soldering, by looking closely at the component side of the board.
When a joint has had the right amount of heat, flux and solder
Great.
Last week at our LARC Kit Building session I examined a members soldering, by looking closely at the component side of the board.
When a joint has had the right amount of heat, flux and solder
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By
Dave VE3GSO
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#52686
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Re: QCX+ Display
#20m
Thanks Dave, a few taps on the back of the display and all was bright again. Finding the dodgy joint may take longer!
David
G4DMG
Thanks Dave, a few taps on the back of the display and all was bright again. Finding the dodgy joint may take longer!
David
G4DMG
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By
David Griffiths <davidmgriffiths42@...>
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#52685
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Re: Help with strange audio fault
#qcx
Blimey Justin!
Really pleased that it sorted your problem. My QCX has been powered up virtually every minute since and works like a charm.
I've gone up a license class since and just waiting to sit
Blimey Justin!
Really pleased that it sorted your problem. My QCX has been powered up virtually every minute since and works like a charm.
I've gone up a license class since and just waiting to sit
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By
Ted 2E0THH
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#52684
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