Looking at the picture a few of the crappy solder joints on my PIO board were located at those pins on the header that Tony jumpered around. I read about the heat problem with the DDS chip in an old forum message and did some probing around when I first had the dropout problem. It indicated that there was some problem on the PIO board and not a problem with the DDS chip, but every time I put any mechanical stress on the PIO board the problem would disappear. That is why I just started resoldering all the bad suspect looking solder joints on the PIO board. After running almost continuously for 3+ months I have not had any more problems since I resoldered those joints... I would STRONGLY encourage you to inspect the solder joints on the boards before suspecting the DDS chip, especially if your SDR-1000 has the heatsink already on the DDS chip.
73 de Phil N8VB On 10/1/05, Ken N9VV <[EMAIL PROTECTED]> wrote: > Tony KB9YIG had a similar dropout last year and prepared > this webpage to show how he soldered jumpers around what > might have been a poorly soldered plug/socket problem: > http://www.n9vv.com/SDR-1000-KB9YIG-GND.html > perhaps Wayne's solution is this simple? > de Ken > > Ahti Aintila wrote: > > I can confirm Eric's statement. One of our three SDR-1000 systems had this > > problem. Cooling down the AD9854 helped temporarily. > > _______________________________________________ > FlexRadio mailing list > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > -- Philip A Covington http://www.philcovington.com
