开云体育

Hi Tony, I've only switched the U2 off gps once to check the 20mhz clock setting anf the results scared me so I switched the gps back in straight away. The seconds were very random, jumping up in

How far out is the nominal 20MHZ clock setting from the actual oscillator frequency Andy? I can't see how the unit could go off time over a few minutes? My understanding is that it resorts to its own

Hi Hans, Just wondering if you could clear something up for me please. I thought timing sync came from the nmea data from the gps. It looks to me that once a pps signal is received, the U2 takes

Andy Yes I have various GPS units that I have yet to try with v2.02a; none of them worked with v2.02, even the UP501, which other people managed to work. My difficulty is lack of time at the moment to

Ok Barry, glad you found the problem. Are you going to use gps in the future? ------------------------------

Hi Andy Your email prompted me to make the obvious check: connections, I use females headers to the male pins on the pcb so I can remove the unit and other bits easily. Of course, one connector,

Hi All I've had my U2 working for a few days now with a Trimble (Silvana/Condor)GPS. The GPS is producing data & 1pps and sets the time and freq adjustment on the U2. However it does not seem to

Hi Barry, I think whats happening is the kit is waiting for the next transmit cycle so you may just have to wait a while after powering up before you see anything on the lcd. Did you have any

Help please. Just received v2.02a, inserted same, entered call-sign, message and other variables etc, and ran for 24 hrs to enable recalibration for time. After adjusting the ozzy for time, pulled the

Of course! Actually, it was one of my uncles cigar boxes... This thread could turn into a Monty Python sketch.... "You were lucky, when I was a lad, five of use had to live in a cigar box and it

That video is brilliant Graham. I just sent it to my engineer son. :)) bzb

http://www.hanssummers.com/crystal.html You were lucky to have a Dad who was skilled in these matters. Nobody in my house had a clue about any of that stuff, and my only words of encouragement were

Hi Mark, Take a look at W3PM's website, QRSS and WSPR designs using both Arduino Uno and Mega boards along with the code for both AD9850 and 9851 DDS boards. The AMQRP DDS-60 can easily be

Hi Gang My Arduino shield configured for a simple FSK callsign TX has simply amazed me with the reports I have received from my 50mW and 30M dipole. What I would like to do now is try some very low

Hi Tony & Philip Hihi. If it wasn't for all you guys finding bugs, ordering kits and requesting enhancements, Mrs UPL would have somewhat less to complain about too ;-) I remember those too, and I

It was nearly 55 years ago I built my first crystal radio set. I was four or five at the time and had discovered a wonderful book in the local library. I had sneaked into the adult section and

LOL = I made my first crystal set when I was eleven. I did it on my bedroom floor, but first it took me weeks to buy the parts. The most expensive bit was the brown 500pf variable with brass vanes. I

Fun times though Tony... Strange to think that nearly sixty years ago I was sat at the table making crystal sets and stuff and here I am, still doing it! I blame Hans.. If it wasn't for him, I would

but do you remember how the frequency ran away when you went anywhere near the thing Philip? I had some kits marketed under the name 'HAC' - Hear All Continents. And you're right, they were

Tell you what Tony, those Denco coils were expensive... A lot of my pocket money went towards buying a couple when I was a lad. Loved the idea of them coming in screen cans and that folded up