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It would be nice to check by an oscilloscope (osci GND one time to SMPS GND and one time to QMX GND; but don't bypass GND via power supply). Maybe there are ripple at VCC. The GND connection PCB#1 to

Cliff and Tony, could be but with the broken SMPS it was 0 %. It's mysterious without knowing the software. Some times ago I found a post with a related document. This document seems to be deleted

GL and others, I'm embarrassed to report that heat took care of it--or mostly. 60, 40, 30 & 20 all have SWR sweeps below 1.3:1. Thank you! Hitting 'T' in putty yields about 1.25 watts for each freq

John, I built 4 of these K6ARK paddles for about $40. https://www.printables.com/model/332611-morse-code-paddle-cw-key I'm lucky enough that my public library has a Prusa 3D printer and they charge

Jay, are you using sidetone absolute or relative? Relative worked much better for me in additional to sample blocks = 2. -Steve K1RF

Hans- TNX. v019 resolved the problem of the frequency display freezing when tuning the encoder. 73

Dj, Hey neighbor!? Are you going to bring that QMX+ to Lobstercon2024? -Nate AC1AS

Ivan, TNX - RX audio sounds much better! 73 <ivan.9a5czi=yahoo.com_at_groups.io_lastradioman@...> wrote:

Jay, here are my settings on a low band QMX Rev1 (See attachments). Your sample blocks need to be set to 2. That will make all the difference. - Steve K1RF

Jay, try to set Sample blocks=2, Sidetone volume to 70 and Sidetone from absolute to relative. 73, Ivan, 9A7AM

The turns direction with regard to each of the binocular core is important. When wound in the correct directions, it works. If one is improperly polarized with regard to the other one, it doesn't

Cliff, I see the ADC_5V and PWM_5V signals at jumpers JP_101 and JP_102 on PCB #1 board itself. Other than that, I don’t see any good places to probe them. Beyond this, I’d venture a guess that

Steve & Group: I tried the suggested AGC settings (below) and keying has clicks. Tried again with SAMPLE BLOCKS 2 and no changes. I'm back on AGC OFF. Thanks & 73 Jay W6CJ Parameter |

Roger that. That check can be done but it is a bit complicated and only works if you can actually hear signals. First off, bad IF sweeps are a big clue. If one ADC channel has failed then IF sweeps

Hi, Chris.? PCB#2 was tested according to your posted suggestions- not plugged in.? I thought the current draw might be from a bad regulator or diode, but both of my PCB#2 boards give the same

Ok, no harm in trying. Before I order the part for the PS Board, is there a way to check if the PCM1804 is good. Save on shipping if I order both at the same time. 73, Cliff, AE5ZA

Tony, Thanks. I already have them, but I don't see any info on what info is available on the row of pads, upper left top of the main board. Is the info there in the schematic and I just can't see

Cliff, Here’s a link to the schematics: https://www.qrp-labs.com/images/qmx/manuals/schematics_rev3.pdf Tony [email protected]> wrote: upper right hand edge of the board? I want to measure the

I deleted my original post. After I set the AGC settings to minimize CW sidetone clicks, the difference between CW and Digi audio volume was very small. Maybe one less enhancement you need to

It can be done, Cliff. I successfully did one recently. Of course Jeff Moore is there to help! JZ [email protected]> wrote: