开云体育

I had that trouble and in the end I just left out the capacitor that was in parallel with the trimmer. This allowed me to move a lot higher, even though the tuning was made a bit more sensitive. I

Tony, Barry, I agree, the GPS is not faulty. The U2 kit does appear to be a lot more fussy about what GPS modules it will work with. Don't worry. This weekend I will have a bit of time, and I will

IIRC you remove C5. Me and Tony G0BZB did that and now we can tune both the QRSS and WSPR segments. 73 de Andy

Good news Barry. Delighted your new GPS works with the new kit. However, there is nothing wrong with the EM-406A. I've had one working with the UQRSS1 for about ten months, day in day out 24/7. It is

Finally got around to fixing my dead U1 kit. Seems to be working fine except for low freq. Did the C4,5 cap change to 18pF from 22pF. Didn't seem to move it much. Highest I can get it is 10139.5 Will

Afternoon All For several weeks, I've been struggling to get my U2 kit working with a EM-406A GPS module. The problem seems to be with the 1pps signal. as the NEMA data is read correctly. Today, I

I ran my UQ1 in a shabby poystyrene box 24/7 for ten months on 10.140 and it sat there like a rock. Looked rubbish; was rubbish, but it did a good job. :))

Thanks Hans. It seems that although my new boxed unit is very pretty, it's rubbish as an oven as it drifted all over the place last night as the shack cooled down. 73 Keith.

Hans, I grew curious as to why two shipments of Ultimate kits might show a difference of more than a month in delivery time to the US. So I retrieved both packages from the basement and compared

Hans, Yes, your records are correct. It does seem strange, particularly because I usually receive one or two packages of electronic parts from out of the country each month. The previous Ultimate

Claustrophobia...?

Hi Keith I'll check it ASAP! The weekend is coming up! Just one more day! Means being able to stop wasting time in the office, and spend it worthily in the radio room (and with XYL). 73 Hans

All (specifically Hans), I've found what I think is a problem with the frequency stabilisation routine in the U2. The manual says: "When using the connected GPS module for frequency stabilisation,

Hi Keith I'm glad it's working Ok. If I had a pound for every time a project worked fine outside the box, and stopped working when I boxed it all up neatly. Actually it happened with my "Ultimate"

Belay that. I've simply restarted it again in FSKCW mode and it seems to be working. To say I don't understand this would be an understatement. 73 Keith.

Right then. My U2 has been working well for over a week so today I decided to do the boxing up thing. After three hours of plastic panel bashing, screwing, fixing and soldering (far more time than

Thanks to all who sent advice. I am ordering some 3.3 regs today. Didn't get any shack tine last night so I have nothing to report back tight now. Will let you know how I get on.

Not sure if this is of any use but I've just measured the 1PPS output of my Reyax UP501 GPS module on a 'scope, 2.8v. (Module runs on 3.3v). I know that this reliably triggers the ATMEGA enough for

Keith Break a 20mm fuse and clean the glass and gunk out of the metal end caps These end caps are a perfect snug fit on the BS170 body. Before pushing on, solder a bit of brass or copper to the end

1)You would probably be able to get away with not heatsinking it. Mine is running 9v with 100% duty cycle. Runs hot but no harm so far. or 2)If you have left a reasonable lead length on the BS170's