开云体育

Have you tried it with the NMEA line connected to the U2 as well as the pps? Also I am not sure what the max voltage is allowed on the U2 processor chip. I know my 2 gps units output 3v. 73's de

Hi Laurence, et al Ditto. I am having the same problem using the 1PPS output (only) from a Garmin 16 HVS. I have satellite lock (confirmed by using GPS Diag program on serial port) The 1PPS pulse is

Hi - Has anyone managed to get the Rockwell TU XXX Jupiter functioning with U2? When I switch on "GPS" and do the right switch to start the LCD just stays blank. Shoving the serial into the GPS TAC32

Its been a very busy weekend and start to the week so not much solder melting going on here right now! My U2 is running with a semi-oven right now. I say semi because at 28mhz the oscillator can

Hi Tom That's great, I'm glad to hear that it worked Ok! 73 Hans G0UPL

Hello Hans, thanks a lot for the support! Indeed, a 1 kOhm pull-down to CPU pin 3 (PD1 = LCD D7) lets the CPU run as a stand-alone keyer. Very usefull for old CPU devices. Regards from

I am preparing for a stint on 28Mhz. I've used 28Mhz MS in the past and been very impressed with the results. However that was with SSB, so it will be a first for me using QRSS instead. 73 de Andy

Hi all, Wondering if anyone is planning to run their U2 during the meteor shower peak and if so, what bands/modes? 72, Chris KQ2RP

Two pictures showing my attic space U2 set up. The white box is the GPS with PSU (UP501 GPS module). U2 mounted in large silver box with internal ATU and PSU. You can also see the plank of wood G

John If it's any help to your fault finding, I have a spare display and a spare chip 2.02A. If you mail me your address I can stick them in the post for you on Monday morning... Philip G4JVF

Hi Folks, This was the idea of old crystal oven chamber and newests OCXO... Regards Ride PY2TI/PS2R

The power supply is a Basetech BT-305 rated at 5A and variable voltage/current. I,ll just order another kit. 73 John ? Digitally signed mail - M0ELS ________________________________ To:

Have you tried a different power supply? That would be my first port of call, unless i was certain of that item. Even if there was a fault, I'd expect the power supply to have enough guts to maintain

Just switched it on to check some voltages and the power supply voltage dropped to 3v. Red led is dimmer now, so it seems the DDS chip is gone. Unplugging the dds board brings the voltage up again to

Hi Hans, I am quite willing to pay for another kit. My soldering is up to scratch as I have done a lot of microwave stuff and spent many years soldering from 10 yrs old to present, so I know that's

John I am happy to replace a dead LCD or dead DDS or dead chip. BUT, I have to note here, that in the majority of cases where someone believes they have a dead component, it is usually something

Ok, I will have to get another one as well. Dont know why this one popped but just one of those things as it was ok last night but on switch on this morning, display

Power supply is good no problem there. ? Digitally signed mail - M0ELS ________________________________ To: QRPLabs@... Sent: Friday, 2 August 2013, 19:01 Subject: Re: [QRPLabs] dds

Just out of interest have you tried an alternative power supply the one I initially used gave me a grayed out LCD and nothing else. Regards Jon - 2E0RFU

Could be the atmega chip that is dead. I blew up one of mine by applying too much voltage through a stupid blunder. The main sign that something was wrong was that the LCD was blank. i could hear