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Okay, but what about using the signal from the antenna-input directly? I can't use an RF splitter / power divider to the non-amplified signal, I might get away with that buffer board? Not sure about

-- QMX+ has an I/Q mode, that uses the soundcard as interface, allowing for a panadapter. You need bandwidth in the data or baseband that is not there outside of the design bandwidth. Also the sound

Has anyone considered or even actually built an integrated handheld QMX rig? I am thinking something like the KH1. I can envision a 3D printed case that includes the QMX, small battery pack, and a

Dave's right.? That stuff works like magic! A little clean up with isopropyl alcohol and the board is like new. Using flux with the solder wick is also key. I don't think having crossed turns

Hi Matti, Re. no output power, did you remember to solder in a jumper wire on the very center pins of JP501? Regards, Mel. M0KMD

Sorry for the delay.Life got busy . And I actually haven't tried the fins yet. I did some test runs on my fan modified QMX HB and my fan modified QDX HB. I found that I could safely push 50% duty

There is a fundamental lack of understanding of the SDR receiver. First there is essentially no IF, its direct to base band which is the IQ outputs.? All the work is done in the digital realm by

*It serves the purpose of working better than not twisting it.* We can spend all week speculating or debating or citing theories as to why but that's not the priority here

Dale-? The toroid parts listing in the latest manual for the Rev 2 board has not been corrected.? But, it is correct in the board Rev. 3 manual.

Dave- LOL.? Yeah, it is actually kind of relaxing to wind these things. But the counting does stress my poor little brain.... Thanks for the encouragement.

Ed, I tried to check in three times but failed. I'll try again next week. Jerry/k5sop

On Fri, Feb 21, 2025 at 01:07 PM, Alan G4ZFQ wrote: Thank you for your reply! > > IF tap is not possible. That's what I thought, I'm assuming, there's no IF at all? > > With very delicate work

Ed, that’s super good of you. I will try to hop on. K2CWC, FN33, Chris. I wasn’t aware of reverse beacon. Super helpful.

Just received the email from Hans' crew at QRP Labs and DHL Tracking tells me that my new rig is on its way ! Gonna have to clear some space on the operating desk ! This new rig shall be used in the

On 2/20/25 I had a CW practice / rag chew session on 40 meters. I worked three stations: Date / Time Call Bnd Frequency Mode Power Rec Snt Name SPC# Comments 2/20/2025

I believe the 9v version of the QMX's T501 is a fairly straight transmission line transformer with a 1:1 turns ratio using twisted wire for a transmission line. The 12v version of T501 needs a 3:2

My newest QMX+ kit Rev 3 arrived and was assembled exactly one week after ordering! The diagnostics test page showed output power (0W) and SWR (random values). Everything else was OK. All sweep tests

Has the rev. 2 parts list been corrected? [email protected]> wrote:

We had twelve folks join the MI QRP Zoom Chat on 20 February. Please join us Thursday February 27 (and every Thursday) at 4PM Eastern for the Michigan QRP Club weekly QRP Chat where the main topics

On 21/02/2025 10:49, 410733 via groups.io wrote: If you want a tap for the RX antenna it might be possible but to do that without affecting the QMX operation will need very careful