I've seen this question asked before but not the answer. I have a USB TTL interface between my QCX Mini and MacBook. I'm trying to use the macOS terminal (actually the "screen" utility) to communicate

Hello! I got one of the early QCX-minis. This is my first HF transceiver and the emails here have me quite scared. I’m a newly-minted Technician and novice with electronics/radios, but I’m excited to

Hello, Any insight would be appreciated: QCX mini new build, 40m RX seems OK. I can hear other stations when I connect an antenna. With a dummy load: STRONG signal at BS170 PA drain, 70V peak NO signa

Hello all, I need assistance placing the QRP LABS TCXO Module on the Synthesizer Board. This is not the Fox Module or similar I have searched this Forum and the QRP LABS Website for information I am n

Tomorrow, January 17th is the 3rd Sunday of the month, which menas it's time for the monthly Run For The Bacon, proudly brought to you by the Flying Pigs QRP Club International. A friendly lil' QRP Sp

I just finished building the 5W power amp. I powered it up and attempted to adjust the bias but got low power out. I traced the fault to the 5V regulator, IC2. I had to cut the track to isolate it. Th

Thanks to the help of several hams here on the group, I have finally fixed the problem I was having with not being able to align the receiver of my QCX-Mini! The problem I discovered was something tha

Hi all, I have a QCX40 Rev 4. When supplied with 12V, the output signal measured into a dummy load is 3.16V pk-pk as measured as Hans does it here (I am even using the same scope!) - https://youtu.be/

Hum, I have installation of Windows survived in work environment for 10years straight, no one of my Linux "evangelists" colleagues was able to survive that much, reinstall please(and repeat!). Most pr

I want to rewind the T1 and T2. Manual p.14 lists this as 0.6mm. Where can I buy some of this and how is it specified? Thanks Brian N N7BKV

Hello fellow builders, I am here to request your help for fixing my 40m QCX+. I built it about 2 months ago and have been using it to make contacts without any issues since then. I didn't have time to

Hi All, I finally got my T1 wound and installed. While soldering it into place I pulled on the wires while soldering to cinch up T1 close to the board, and the wire at point 3 broke. I will not bore y

Anyone have the turns count on T1 and L4 for QCX on 10m and 6m??? The lpf toroids are easy enough (ultimate 3 series). and any other cap changes neccesary?.

For those aspiring to learn/pick up their code speed, I have KC9ON's 3CPO keyer/code practice oscillator featuring the YACK keyer with a button control interface. It offers the usual keyer amenities (

I have a 20m QCX mini that came with a missing/broken SMD cap and other various poor soldering. I attempted to fix the problems, but I made it worse, and I think I ended up shorting the voltage regula

What a massive difference a linear power supply makes to the receive background noise. I knew already that random switch mode supplies are bad news for rx noise level, but that didn't stop me pressing

I successfully built a QCX Mini 40m with only a few self-induced hiccups that needed de-soldering. Alignment is fine as per instructions. Using it showed that the audio level adjustment using an ampli

I bought this little jewel mostly for a build project and now it needs a home where it will see more use. Comes with case and a 3D printed folding stand attached. Looks and works perfectly. More detai

This text has appeared in the Drafts folder on my Mac. I did not originate it nor do I have the simulation. BEGINS For anyone interested I have a simulation in LTspice of the CW filter. See my web sit

Hello to all , I'm new on this forum, my first name is Jean-Pierre I'm a radio amateur (F1AFJ) And within the F5KOK radio club I am repairing 3 "Ultimate3", two of them are functional again. On the th