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Re: New QMX build displays only squares
Yes, I have done that, but no cigar.Doug? WX7J?Sent from my T-Mobile 5G Device
By Doug Boyer WX7J · #119961 ·
Re: QRP Labs stuff for sale
The VFO/SigGen has the 60 meter LPF kit installed, NOT the 40M one.? My bad. Offers will be considered BTW!! 73, Bill NZ0T
By nz0tham@... · #119960 ·
Re: QRP Labs stuff for sale
Hi Bob, It's this one: https://kitsandparts.com/rfamp1.4.php ( https://kitsandparts.com/rfamp1.4.php ) Plenty of output to drive the HW-101 and I see that I erred in m y description as I used the
By nz0tham@... · #119959 ·
Re: New QMX build displays only squares
Did you adjust the brightness of the screen? There's a step in the manual for rotating the screw on the left of the display until letters become comfortably visible apart from background. Do you have
By mordan42 · #119958 ·
Keep QMX L401 Loop Intact or Cut into Two Wires ?
I'm building the QMX and have the L401 installed and ready to solder. The manual says to cut the wires underneath the board and solder. Does this mean to cut the loop into two separate wires and
By Bill Jobes · #119957 ·
Re: QMX with POTA Yesterday
Beautiful setup. I can see some future directions for antenna experimentation in my future! Thanks!
By Todd W2TEF · #119956 ·
New QMX build displays only squares
Greetings all. My first QMX build was an abject failure. I just finished a new rev.3 QMX build and I am able to flash the firmware ??¡á? but all I get is squares along the top line of the
By Doug Boyer WX7J · #119955 ·
Re: QMX no initial power up
I meant C105 is not shorted when I uninstall PCB 2. Wayne
By Wayne KB4DSF · #119954 ·
Re: QMX no initial power up
OK, all. Just to keep you informed in the case something gives you an idea to send to me, I am finding C105 on PCB 2 (the 3V3 board) shorts when I install the board. It is not shorted when I remove
By Wayne KB4DSF · #119953 ·
Re: New QMX Rev3 build - no power out...
Wayne, The zero power out issue that caused me to start this message thread has not yet been resolved on my unit. With some great input from this thread my next step is to pull out T501 (the power
By Michael LaBlanc · #119952 ·
Re: New Rev 3 Hi Band QMX Build - RF Sweep Test locks up the QMX and Tx causes fireworks?
Chris , Here are some scope screens from my workbench. The first is the clock phase pair. The second shows op amp outputs while listening to a 700Hz beat. Of course, if you are hearing nothing, that
By John Z · #119951 ·
Re: New Rev 3 Hi Band QMX Build - RF Sweep Test locks up the QMX and Tx causes fireworks?
John, As suggested, I checked the current draw on IC407 which appears okay at 33mA. Also, I was unable to receive any IQ output via USB and HDSDR (works fine with my other QMX) I've realised today
By Chris Bolton · #119950 ·
Re: QMX no initial power up
Thank you, Evan! Now, maybe I can figure out where the 12V and ground are shorted. It's not at the pins, so I'm a bit baffled. Wayne
By Wayne KB4DSF · #119949 ·
#QMX #FT8 #JS8 #POTA kit! #ft8 #JS8 #POTA #qmx
Inovato Quadra, an Amazon monitor, two cell phone charger batteries, voltage regulator because I did the 9v power winding, cw key, harbor freight 3800 case, and all the needed cables (quadra came with
By mordan42 · #119948 ·
Re: QMX - Adjustable RF power output (New feature?)
And for WSPR and for auto-ATU and for when SWR is iffy. 73, Mike KK7ER
By Mike KK7ER · #119947 ·
Re: QMX with POTA Yesterday
Udo: I really like your setup!? Is that the smaller 3000mah talentcell?? I struggled between it and the larger 6000 that I ended up getting.? I figured the larger one would let me have it
By Jason - KO4NDP · #119946 ·
Re: QMX no initial power up
Hi Wayne, I must apologize to the original creator of the attached PDF.? I can not find the post that included this drawing. I have attached the pinout for the power supply modules that have not
By Evan Hand · #119945 ·
Re: QMX Rev 2 - No continuity between L401 and L503?
Whoops, sorry... I've just realised that my working QMX is actually a Rev1 version:-/ 73 Chris - M0KNF
By Chris Bolton · #119944 ·
Re: Missing QMX case side
Hi Ernie, all I'm sorry about the delay, I'm behind on emails and helpdesk tickets. My XYL and I both have some kind of 'flu or nasty cold or Covid19 (not sure in any case what the difference is);
By Hans Summers · #119943 ·
Re: New QMX Rev3 build - no power out...
Hi, all. I'm wondering if this problem has been resolved, and if so, how was it resolved? I'm having the exact same problem Mike had. Thank you, Wayne KB4DSF
By Wayne KB4DSF · #119942 ·