Not possible because 10m is not supported by firmware. A future version may support upper bands. You must have a different ionosphere than the rest of us, but 10m does get lively about now with E skip

#qdx

Jeff Find the qrp labs factory tour video on YouTube. I think there is a lot more variation in cycle time for built units than kits. The mini build was likely also around 6 hours for me. Hardest thing

Steve Compare the parts list between the different bands to see if the same toroid is used. The type of toroid is designated by a color painted on. See if qrp labs has a construction manual for the lo

Yep I have it here. A different writing style than I expected, wish I had my texts like that in college. Stay a bit mystified with the ionosphere. Curt

A 40m end fed half wave will do both those bands. If no trees around, wid river coils are popular with pota crowd. Curt

George I suggest more data as something could be in play. The moon is a tiny target for radio. But it gives quite a pull on the oceans. So perhaps it may tug ions, maybe mostly the D layer. Keep up th

Jim Build your QCX rigs and do visit as you need help. I have seen very few issues on this list. As we do have someone anonymous here just play along, I tease him a bit assuming he is a he, honestly h

Okay Mr Albert Tatlock impersonator, maybe you found a gaffe. Can you give us an overall review of this book? Anything of real interest in there? Often the chapter outline is fair game, but too much f

Secrets of design. Wow that's a bizarre title from a major publisher. What year was this written? Well had it been phrased as transmitter matching, natural device behavior is to generate harmonics. So

Perhaps it may be more active in Europe, and if it is, let them continue. There are some general qrp operating events, and they generally need more participants. I get my fill operating qrp during a f

#qcx_challenge

Charles Let's assume that everything with visible damage needs replacement. Designers sometimes do what you did, so we don't have to, to create a design. You obviously took it beyond its limits. After

#help #magicsmoke #troubleshooting

I concur that the IF pass and is narrow enough that your signal should arrive in the other station's receiver. Yes some rigs do have a visual indicator of zero beat and there may be kits available. Bu

#mods #qcx

Timothy Try what Julian suggests to see if it's good enough. I think the risk to the mini outweighs any small performance loss, if there is really any. Curt

John Homework assignment is to check US tech privileges on 80 and 40 meters to see if they overlap with ft8. Build a qdx anyway since I suspect you will upgrade when you get a chance. Glad you are lea

Won't start check settings. Won't radiate check continuity of filter. Yes I have done 160m on the u3s. Curt

I am not the expert in power amplifiers, but it goes something like this. To get high output power without an excessive bias voltage, we must present a lower impedance to the power transistors. This t

Check the instructions again for procedure to exit the calibration menu.

Keith A couple key things. Note each trimmer has a menu item. You have to change menu setting when switching between the trimmers. At first very little happens. Null one pot and move to the next one.

Keith I think we may be giving the cap too much attention. Possibly all but one or two connections may be good. Prime suspects include not have conductivity one or more spots on T1 or one or more pins

Keith The C1 peak isn't greatly pronounced. I don't know if you started calibration that requires nulling of 3 pots, but success here is some confirmation of T1 viability. I still wonder if you are co