Mike You are very correct about the threshold. After looking at circuit, with the RF 'filter' cap at the gate of Q5 and the fact that the gate is being driven by the ATMega328 voltages (5V) as a Read/

#parts #qcxmini #missing

Ferrite cores and iron dust cores are not the same material. Ferrite cores are not normally coated with a colour, iron dust are coated with a colour to show the mix.

#parts #problem

Thank you so much for the timely guidance. I would have responded sooner but I was busy winding coils! I am happy to report all went smoothly. Wonderful to be part of this great community. Best health

#qcx #qcx40 #40m #parts #manual

Sorry to tell you Shanon, but Murphy normally arrives even before you do yourself ....

#parts

Syd, your first point of contact should be Hans. You'll find him very helpful.

#40m #parts

By the way, replacing 16V capacitors with 25V parts is acceptable and common as long as the remaining specs (size, tolerance, temp range, ESR) are still met. 73, Paul K2AYZ

#qcx #parts #40m

DIY WORKBENCH: http://www.n5ese.com/capac_ckr.htm http://www.n5ese.com/l-meter.htm http://www.n5ese.com/rfprobe2.htm https://www.brighthubengineering.com/diy-electronics-devices/73675-build-at-home-an

#parts

Hi all I do hear of broken potentiometers sometimes. The exposed tabs made from SRPB material are probably not exactly easily broken, but certainly more easy than the other components in the kit. I do

#parts

Hi all, Been away from this thread, the QCX and amateur radio for a few months due to some personal issues which have cleared up a bit now thank goodness. Glad to see this thread is still going on and

#qcx #parts

Vince, See the link I provided in my reply to Kees, assuming you want the case I used. 73!

#qcx #case #encl #parts

I just thought you might look through some of them to see if you could find what you needed, like eBay #152215440586, which might work. Jack, W8TEE

#parts #qcx

Great News ! an excuse if needed, to buy a piece of accurate test equipment & get a world beater of a TRX thrown in for free.... Alan

#qcx #lpf #parts

Thanks very much to All! I'll be chewing on this for a while. Thanks, Bill K0WHW

#parts

Gilles, I think you will need to make the BPFs very broad. 1-30MHz is a lot to cover with only 5(?) BPFs. Any soundcard will do if you use the polyphase output, it is amplified and only low frequency.

#parts

I am in the process of soldering my QCX, trying to keep solder bridges from forming, no smoke yet. But I noticed both of them should get 5v, and I wasnt sure if a solder bridge was ok or not. I will c

#parts

I've just finished some knobs to replace the stock knobs in cases which I print. Anyone who has one of my cases and wants Knobs like the ones shown in the attached picture. Contact me off list and I'l

#case #parts

Hi a squirt of switch cleaner may help if the pot has an opening brought back to life a few very old but pots that way just a suggestion. Barry

#parts

10 of the Si570 or 10 of th Si4721? -Justin N2TOH

#parts