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Re: QMX Feature Request - field “tune” mode
Hi all I do think W6CSN's request is fulfilled by the SWR feature in the hardware menu. However, it does need operational convenience improvements as Garrett KC3UNP says. It was already requested and
By Hans Summers · #118760 ·
Re: QMX Feature Request - field “tune” mode
I find that the SWR feature under the hardware tests menu works very well for tuning (and power level of that SWR test is configurable in the setup menu to boot!), though it’s a bit tedious to
By Garrett kc3unp · #118759 ·
Re: list of acceptable digital modes?
Thanks Cliff, I noted that in the manual that they did not work with PSK31, frequency or phase shift, or any multi-tone modes. Olivia was acceptable, I'm hoping that Thor is also OK, and I may
By Ron VE8RT · #118758 ·
RF preamp for power amp - HF and 6 mtrs. Magic silicon does all.
here's a? design which I believe to be be mature that will take 3mW or so up to? 270 mW or so to drive RD15HH or similar mosfets. No originality? claimed but? it's potentially useful to many ?
By Timothy Fidler · #118757 ·
Re: list of acceptable digital modes?
Ron, All the digital modes in fldigi, HRD, Wsjtx all work with the QDX, but not with the QMX unless you turn off the Transmit ID function. FT8,4, etc all work with the QMX. 73, Cliff, AE5ZA
By Cliff · #118756 ·
list of acceptable digital modes?
Rather than ask only about a particular mode of interest, in this case Thor, has someone put online a list of digital modes that do work with the QCX QDX QMX series? Ron VE8RT -- Ron VE8RT
By Ron VE8RT · #118755 ·
Re: Low Band Rev1 QMX for sale
The QMX has been sold. Thank you
By George Carey · #118754 ·
Re: QRPp
To further clarify, in case of QCX i used with one BS170 and currently with my QDX-M a pair of BS170 one in each side. Both operating with 5Volts -- 73, Barb
By Barb WB2CBA · #118753 ·
Re: Faulty Progrock2 - no response to ticket #progrock2
Hi Can not reach ProgRock2? Try turning down bluetooth first sometimes it create conflicts on com ports 73 de muhsin TA1MHS
By Muhsin TA1MHS · #118752 ·
Re: QMX Feature Request - field “tune” mode
Is the "Hardware Tests" -> "Tune SWR" menu item sufficient for your use case? (%voltage settable in "Protection" menu)
By Devin Grady · #118751 ·
Re: #qmx high band harmonics #qmx
Thanks, Hans.? The tinySA has been on my list for a while.? Now I have a good reason to get one! Eric
By Eric Hansen, KB1VUN · #118750 ·
QMX Feature Request - field “tune” mode
The SWR metering and protection are features that really make the QMX a field capable radio. However, from several outings now I’m finding that I would like a front panel means to activate a reduced
By Matt - W6CSN · #118749 ·
Re: Magical smoke out of QDX, two leftmost BS170 very hot
Volker, Remove the BS170s. Test for 5 volts at the gate pads when in transmit. 0 volts receive. If good replace BS170s. Maybe consider a diode across L14, could protect against one failure mode. 73
By Alan G4ZFQ · #118748 ·
Re: #qmx high band harmonics #qmx
Hi Eric I don't think 'scope FFTs are anywhere near good enough for HF transmitter harmonic testing, and get worse as the frequency goes up. The job needs a real spectrum analyzer. The TinySA is very
By Hans Summers · #118747 ·
#qmx high band harmonics #qmx
High-band QMX rev2 (2024), 9V version, Firmware 017.? Having fun learning about this radio. LPF cutoffs are good, though LPFs 1 and 2 show stopbands a little high, about –30dB.? I get 4W out on
By Eric Hansen, KB1VUN · #118746 ·
Re: QRPp
Correct! In my case I smoked out two of the BS170 and ended up with one heathy BS170. QDX is ?still alive and kicking with that one!:) 3x BS170 is absolutely a better option to distribute output
By Barb WB2CBA · #118745 ·
Re: Magical smoke out of QDX, two leftmost BS170 very hot
Ah, yes. more data. This happened on 40m, 7074 KHz. I was transmitting sucessfully right before, couple of POTA QSOs, tuned antenna to SWR 1,2:1 (with NanoVNA) 73 de EA7KLK Volker
By Volker Kerkhoff · #118744 ·
Magical smoke out of QDX, two leftmost BS170 very hot
Hello, 'fraid my QDX let out the magic smoke today. I had one of these rare moments when it would not transmit after changing band / frequency. I unplugged from both PC and power, plugged pwer back
By Volker Kerkhoff · #118743 ·
Low Band Rev1 QMX for sale
Hello, I am offering my fully built low band Rev1 QMX for sale. I am a J-STD soldering instructor and experienced kit builder. My QMX worked fine first time with no issues. I am very happy with the
By George Carey · #118742 ·
Re: QRPp
Just to make sure I understand the theory...? 3x BS-170's @ 5v would still result in the same QRPp power out as Barb's 1x BS-170 @ 5v? Thanks Jon n0wl
By Jonathan Poland · #118741 ·