Just to avoid leading y'all astray, I should say that this was my first project at this level of complexity. I managed to mount a couple of components wrongly, which I had to pull and re-mount in thei

#40m #qcx

George - I'm working on it...

#40m #qcx

Hi James, thanks for responding. In answer to your suggestion, I pulled the microcontroller and checked resistance between socket 17 and the ground pin at the GPS antenna connection (lower-right corne

#40m #qcx

No output power on my QCX40. LPF is continuous from end to end. On the Troubleshooting page, Hans says, in reference to IC3: "Again the 0V and 5V in this chart, should measure pretty close to 0V and 5

#40m #qcx

Kees, you don't worry about magnetizing (or demagnetizing) something in your project if you slip?

For the nearly indigent among us, there is this diy stereo microscope from a Hackaday article (just search Hackaday for "stereo microscope"). Two pairs of cheap, plastic toy binoculars and a bit of ep

How many times have I lost one of those tiny screws while trying to get them started in their tiny holes? How do you do it? My method is to jam the end of a wood stick into the slot. I have a pack of

Stephen, thanks. Actually I found the noise blanker on my own (helps if you read the whole operating manual, nu?), and now (at 20) not decoding noise...though the hams trying to contact me from Alpha

From the top of page 111 of the QCX Rev 1.11 assembly manual, referring to the implementation of the transmit/receive switch: "The switch wouldn't provide enough attenuation to mute an operating recei

Just finished my QCX40 and turned it on for the first time. The decoder is detecting random dashes - that is, I am getting "T"s and "M"s across the bottom of the display. Intermittent short somewhere?

Has anyone modified the Shack Clock to log temperatures? I'm thinking, perhaps, of transmitting the time/date and temperatures off-board, to an arduino, for instance. I believe there are some pins ava

Some further investigation: after setting all registers from 4 - 28 to 0, I began running successive register reports, adding a single digit to the value of register 4 prior to each report, i.e. 1, th

Everything was working fine, things looked like the operations manual said it should. Then I tinkered with some of the circuitry, working toward connecting to the Receiver Module. Now, things are most

So, I could put a diode in the line to prevent the reverse current?

Have my ProgRock connected to my arduino UNO, sketched as per the ProgRock Operations manual, switch 2 properly set on the ProgRock. Boot up the arduino, power on the ProgRock, and voila, 4 flashes &

So, just for fun, I added a 47KOhm resistor in parallel with the 3K at position R2 (for a net of 2.82K, theoretically). The fitted resistances are now 0.968K and 2.66K, and the board voltages are 5.15

Measuring R1 and R2, in the board, I'm getting 0.968kOhms and 2.82KOhms, which, should be giving me 1.25V(1+(2.82/0.968)) = 4.89V. But I'm not good enough at reading schematics to conclude whether or

The assembly manual, page 10, says "If there is any problem with the measured voltages then you have GOT to investigate and find the problem before going any further!." I did, and got +5.3V, and +3.7V

Nope, that's not it either. With the local time offset set to -480 (that's minus four hundred eighty) minutes, and the first line set to display local date and time, the date rolls over at 4:00pm loca

Geneva...Greenwich...you know what I mean...