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Have you tried increasing the Audio gain (dB) in the configuration table? You can access this in terminal mode. -- 73, Rick VE7TK Website: https://www.ve7tk.ca/ ( https://www.ve7tk.ca )

Have decided to remove T507, rewind and reinstall. Now I must ask HOW did you clear the through-holes of solder? I have a hot iron solder sucker but it is way too big. Have also solder wick and have

Hi Charles, all To be clear: ***NO*** QMX Rev 3 will have a Q202 problem. 100.0% of all the 1,000 in the batch, the Q202 will be changed by us, to the Nexperia BSS84AK I sourced. It should be noted

Hans, On 2/19/24 I received an email stating my QMX high band shipped. Today FedEx shows "label created" as status.? Will my order # 82084 have Q202 problem? Charles Murrell K5KXJ

Correction! He fixed my QMX Rev2!

@DL2ARL Thanks for pointing this out. Seems I have been lucky so far...and if I think about it, its probably by chance. Routinely, I connect my trigger board first to the powerbank and then I connect

Hello AD5MO! Tangential to topic, but, I am working on three similar go-boxes and I am very interested to incorporate two Inovato Quadra systems. My plan includes water resistant power outlets on two

I'm on my 5th build.? All work and the latest partial SMT and works the same as the others. My curves are different than Guidos.? I never measure output impedance,? However the gain I get is

I built 3 of V1 type 10W linear amplifier to use with ?my own design carrier board and am very happy with it. I am still using them for my sota/vota activities.Great

Hi Hans. Glad your problem is (painfully) solved. I can;t tell you how many times I've got bitten over the years with: 1. early CMOS chips that had no input protection. They would get damaged if you

Dan, From 5 volts USB you might get ~300mA at 12 volts? Even if you do not get any QRM from the converter TX would have to be QRP. Maybe feed the PA from 5 volts on another USB socket. Then why use a

Hi I have used these answer is no - You won't have the required current on transmit - Too much noise on receive There might be a solution on USB-C s I am using an Varta power bank (Power Bank

Has anyone tried using a USB to 12v Buck converter to power their QDX? I would like to plug into my laptop and not have to carry a separate battery for the QDX.

Hi all GOOD NEWS... (rare, I know) I carefully followed the mail tracking number with the domestic courier, for the 350 Nexperia BSS84AK I ordered from Istanbul on Tuesday afternoon that shipped on

Hi Jerry, I have built two of these amplifiers and they work flawlessly. The only thing I can think of is a possible bad contact due to a cold solder joint. Check the bias currents of the

Hi all, Yes, february has one more day this year, but it's still the shortest month, so it's already time again for the *QCX Challenge* , next Monday, February 26th, at 1300Z, 1900Z and 0300Z

Oleh and other gentlemen, That's what I found out. Thank you! The little fella is an amazing piece of work and the support offered here by both Hans and the rest of the QRP Labs group membership is

Your oversensitive MOSFET brings back memories of dealing with very ESD sensitive A/D converters from when I was a design engineer in the 1980's. We were constantly riding the production manager for

Allison, I believe this is the size iron Hans is referring to, in his early Neolithic writings, as being just a little large, but still able to get the job done in a pinch. I believe Hans found a

Giuseppe, If you are convinced that the BS170s have failed, replace them. It is not difficult. Try to find another nearby Ham or Radio club that can help you with diagnosis and repair, if you feel