开云体育

Try several different settings of either 'Frequency min.' and/or 'Frequency center'.? I was able to (with a few trials) get the plot to complete out to the full x-axis range.? I think that a

Based on some experimentation with some similar phase calibration results on a couple of bands on two of my QMX, it appears to me that when the phase distortion curve is started, but not completed,

Ellis Distortion on one band only could be RF getting into audio. See if same thing happens when transmitting into dummy load. And maybe an external signal report. Curt

Thanks everyone. I had done everything correctly but in my excitement to try out the rig, not fitted the link in JP501. Obviously skimmed over page 36 as well !

Jeremy, I would test both power boards offline following QMX QMX_Plus Power supply test Process ( /g/QRPLabs/wiki/37128 ) from the QRP Labs Wiki. IC101 VI should be at least 5.3 V +

Tell it to enjoy it's holiday. I have plans on its return.

Hi, I installed the 1_01_003 beta firmware yesterday and I am amazed at how it has transformed my QMX+ (rev 2 board). I am, however, perplexed at the fact that the SSB audio is distorted (on another

Post calibration - which was run without any other adjustments.

Thanks, Stan. I got a nice thick tip and reflowed all of the connections on the display, and the header pins for the display. Powered it up and there was ZERO phantom button pushing going on. I used

Hector, maybe you are just noticing them more because in SSB mode your receiver bandwidth is a lot wider. -- 73, Dan - W2DLC

I just finished building a QDX board version 3 with the latest 1.10 firmware installed and have been testing it. I built it for 9v operation and am using a variable bench power supply to test it. I

I recently finished my first build of the QMX and can't get it to power up properly. At first when I pressed the left encoder, the power consumption went up to 440 mA and then back down when the

Hi! Has anyone experienced an increase in birdies and/or decrease of rx sensitivity? Maybe its my AGC settings but I get a lot of birdies and some of them are very annoying, maybe they were already

I was hoping for a simple solution for you. ?The possibilities are many now. ?So it’s hard to know what to tackle next without scoping some of the signals. if you do send it for a Cape Cod

My experience with Jeff was very positive. Dave K9SW

Tim, it's possible that a protection diode on one of the buck converter power supply boards has done it's job. You can replace the diodes, or buy new boards from QRP Labs, but if you aren't

Thanks! To me it also looks like they have a different shape (with the shinier ones having more of a rounded curve), but it could be an optical illusion.

I'd open a ticket that Hans will address when he gets back from vacation: https://qrp-labs.com/support/

You have it correct.? ?The "shiny" black toroids are coated with a glossy lacquer, but they do this by spraying while the toroid is laying flat, so one side of it is still flat black.? The "dull"

Right. It's a bit tricky to really tell which "black" toroids are dull and which are shiny. I think I have it right though.