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Has anyone captured the rise and fall edges of the QMX?? Here is what I measured: I do not see the rise and fall expected.? Also, I am getting a value of 9.3 volts on the transmitter voltage when

Tim, I do not understand what you are asking. Where is the QRSS/WSPR configuration? The WSPR program WSJT-X sends data to wsprnet, there is no alternative. (Received spots should be sent to WSPRnet,

I am new to WSPR. I am looking at the QRSS/WSPR configuration and I am wondering where the IP addressing is entered for the WSPRnet database or any other database/mapping site? In the case of WSPR

Ryuji, A .asc simulation file for the modulator has been DM'd to you this morning. Have fun with it!...JZ

To further enhance Hans’s comment, with a decent amount of Raki you can even install moon on earth without any problem!:) 73 Barb WB2CBA

Dear friendly Razvan If the booze bottle is not yet empty after successful work done (or instead I do believe that you are, in general, correct. However, I would add that after even a moderate

congrats to the nice Website Rick. My station will look never that tidy. Oh, and I ownly own QCXes as main station.

By accident, I found this http://www.americandentallabs.net/labs/qrp-dental-lab/ Has Hans started a new business ? As if he hasn't enough work already ... ;-) Luc ON7DQ

It also has a triangular shape, not a square wave (200 MHz scope!) Didn't catch the voltage, but not logic levels.

Someone mentioned checking the 25MHz clock. SYSCLK does not look like a logic level signal, and it's definitely not 25MHz. Looks more like 177KHz (according to my scope...) Looks a lot like the TXO

I'm using USB C - USB A...

It's funny you phrase it like that because I thought you were mister safety. Once we figure out what's going on, or determine that a different phase compensation technique is better suited, I can

Hi all, if strong evidence is given for the fact that the main Professor is gone south, do not bother deslodering it living. Using a sharp Xacto Knive cut all pins (care taken not to cut trough the

Nick, The issue is in TX. It will transmit once then never again until you reboot the QMX. It always shows not enough audio after the first TX. 73, Cliff, AE5ZA

Pardon me for jumping in here, but I've read a number of posts on this list that mentioned issues with USB-C - USB-C cables where USB-A - USB-C worked FB. 73, Cliff, AE5ZA

Thanks for the idea, Nic-- When I press the left encoder shaft, I see the current go from zero to 160ma, and it stays there when I release it. That's pretty convincing evidence that the switch

Colin, It's possible, but I did put the control bard under my microscope and couldn't see any shorts. I've got a new encoder being sent to me - will see if replacing it changes things. Keeping

Ryuji, When it comes time to use that modulator for SSB or AM, a lot of AC current will flow through that 12 uF capacitor. Are you OK with that? In the morning I will send you the .asc file for my

I had a similar problem problem withe the other encoder. It wasn't possible to scroll through the menu. One of the encoder pins was sorting to ground that shouldn't. Too much solder. Desoldering then

Ryuji, It's a system analysis - stay within max input of log amp voltage limit, turns ratios, attenuator values and sizing attenuators for de-rated power dissipation, etc..I was happy with it at the