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Further update on this problem. G0FTD seems to have intermittent thin WSPR data trace and no de-codes on 28MHz but has seen a decode or 2 of his own signal after fiddling. My unit is absolutely

Thanks Philip Glad yours works on 28MHz, knowing that you use outboard LPF was an influence for my test without the Output FET powered in case there was feedback. Your report puts us back into

Sounds great Hans. Thanks for all your work, service and offering these kits at very reasonable prices. Cant wait to get my U2 built. 72, Chris KQ2RP

Did a couple of hours test on WSPR 28MHz earlier Got a few spots which considering the band conditions and my Windom's reluctance to tune on 10 meters was a result.. The PA FET gets hot on this

Hi Hans I tried various setting of the calibration, clutching at straws again, Andy FTDbhas negative values ie. 124,999,xxx mine is 125,000,555 there was no improvement in the narrow 3 Unit WSPR

Ok Hans. I don't think my efforts here will be terribly helpful. I made the circuit (ugly style) and I have a problem with it. It had no efect. Listening with a walkman earphone, I can hear the

Yep. Odd thing is I decided to put the rig live on 10m and the trace went funny. So it wasn;t the DDS ref afterall then. Just plonked it on 30m now. Whaddya know - I can see all 4 bit streams for the

I've had the U2 kit working well on 20m WSPR (but without the GPS which still doesn't work here?). The kit still only has a single FET at 5v as the PA and the antenna is a "loop" made

Odd. As such calibrating will / should do nothing to the signal data as long as you are in the WSPR window which you can see for yourself anyway. The GPS does it spot on anyway. OK test in my mind,

Oh no, not another gong ;-) I've just had a thought to recheck my 125Mhz DDS clock frequency. I did notice a shift by 25Hz when I plonked the heat shieled on the DDS module but didn't think

Good idea. I have just seen / heard seen a WSPR signal on 28.126167MHz, does any one here own this signal. I could hear it clanging and banging just like my U2 on 28MHz and the signal did not

Ah thank you Sir Foad I was just perfecting the knot in this 6feet of rope I have attached to the rafters in the shack. I shall now either put it away or send it in the post to Hans. Hans, its all

I forgot to add that the 28Mhz trace appears to be only about 2 - 2.5Hz bandwidth on Spectran. 73 de Andy

I've retitled this thread, since to the best of my knowledge there is no longer an issue with the PA on 28Mhz once the DDS pot is given a little tweak. Now I've done some tests on WSPR. 18Mhz: Using

Yes I know all that, but you knew exactly what I meant and in my engineering circles we always bandied terms about, quickest simplest reference term is PIC and an SI570 does digital synthesis

Hi Eddie No no it's not such a debate. This is just a simple one. PIC and AVR's are both micro-controllers, quite similar, they are just different families from different manufacturers. It's like BMW

Oops yes, checked that it, is v2.01. It was late last night when I decided to drop frequency in steps until WSPR started decoding and when it was not far different to what I remembered reading in the

Hi Eddie & all Many many emails are hitting my email box, as well as the ones coming through this forum. Many topics to consider. So please excuse me if I am delayed, or confused, etc :-) On this

Hi Chris Yes, I see that - inconsistent, you are right! I will correct that in the manual. Also I will put it in the v1.09 version along with the other change that was requested. AND, I'll make sure

Good show Andy's Setting the Mark Space Ratio Pot to produce equal mark space on pin 7 of the DDS gives stable operation between the points either side where the signal collapses completely like Andy