]
To: 'Wayne Roth' [EMAIL PROTECTED]; FlexRadio@flex-radio.biz
Sent: Friday, September 30, 2005 11:30 PM
Subject: Re: [Flexradio] Receiver dies 2 min after power-up, ideas?
This is exactly what it looks like when/if the DDS quits running.
Contact us directly about getting the unit serviced. You
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
At 06:09 AM 10/1/2005, 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. Then I installed a
bigger heatsink that worked a couple of weeks until the synthesizer got
damaged so badly that it did not
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
Tony jumpered where he did, I jumpered the 5 volt output (directly
from the leg of the 7805) to the pin in the header where it was carried
off the PIO board. I believed the traces were too small and I had
damaged them when changing over from pre-RFE to post-RFE.(3
board to 4 board
-radio.biz
Sent: Saturday, October 01, 2005 5:07 PM
Subject: Re: [Flexradio] Receiver dies 2 min after power-up, ideas?
At 06:09 AM 10/1/2005, 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. Then I
Wayne Roth wrote:
My SDR-1000 (an older rev box with RFE, no PA or tuner, parallel port
interface) receives fine for the first couple of minutes then goes deaf.
Cycling the DC power restores the receiver for another couple minutes, then
it dies again. Just before it craps out, the baseline
7 matches
Mail list logo
