Agreed, Mike, since 1954

OOPS ! bad boy

A better probe, with more accuracy, is a steel or stainless steel pin, as used in dressmaking. Solder a wire to the head. then cover with heatshrink laving a millimetre or so uninsulated at its point.

#qcxmini #magicsmoke #parts

Why, I wonder, has Hans not produced a QCX for 10m and above?. Could it be because the efficiency of the mixer drops as frequency increases

PANIC NOT +++++++++ Conner, If you look at the topography of the QCX you will see it is, in essence, a direct conversion receiver. On receive the local oscillator is offset from the receive frequency

Looking through the list I don't recall seeing anything about projects using the QCX+ Dev Board. Whats brewing, or should I ask, Is anything brewing ?

#dev

Tide time tables would be nice too <vbg> only joking....

#u3s #clock #qlg1

Look at the layout on the pcb, put the toroid in the right position, put a wire through the toroid and into the start pad of the winding, observe the direction to wind upwards from there and around th

#toroid

I'm trying to the aquire repeatable temperature readings using the #clock module. I have found that ADC values read by the clock module are very dependant on the supply voltage and if relays are energ

#clock

Hans, for next revision of clock software perhaps add tags.. #TnH for temp maxmum logged #TnL for temp minimum logged and an option to clear either or both... 73, Mike

#clock

GO AWAY !. sorry for shouting folks..

#problem

Who knows better where the chip is on the board?. two choices.. 1. the guy who offers 'improvements' to a kit that he built and as yet does'nt work 2. the guy who designed the circuit, the board and s

#problem

Has anyone else observed an overheating Si chip ? I did'nt realise that The manufacturers offer a version with a heatsink to groundplane opion. I have seen quite a few SI5351 failiers, but all due to

#problem

That is understandabl as SK, as in silent Key, derives from the SK as in end of transmission. You are just of a morbid mind Trystan <vbg>

#firmware #qcx

I found the attached article on AGC while looking for ALC, typical finger trouble here.. but it seems that the circuit may be worth a try with the QCX. hth, Mike

Looking at the QCXp circuit the links on the input to the phaseshift network, JP7 and JP8 could be used for an I-Q tap to drive a soundcard. Would buffering at that point with an LM4562, using one sec

Am I the first? Received the kit at about 1100 today, just powered it up and tweaked the pots for receive. not fitted the TX yet. build took about 6 hours. good fun... 73 Mike G8NXD

Try removing the GPS input while setting up the screen display.

My package has two tracking timelines, one from long before It was ordered... https://www.tnt.com/express/en_gb/site/shipping-tools/tracking.html?cons=121494 030&searchType=CON&source=share&utm_source

When you _Want_ to split a core, for whatever reason, you usually end up splitting it into fragments be happy and make an RF current meter clamp. Or, stick it back together with the minimum of minimum