Hello Janne,
welcome to the group which, I am sure, will benefit from any
contribution you will give.
The AD9954 should have the same core of the AD9951. This latter has
been used by Giuliano I0CG in his SDR-X receiver, with a clock of 500
MHz. The SDR-X can receive up to the 6m band, so
Hi Janne,
Building a DDS with AD9951/4 is easier than you think. I had copied the design
by DL5MGD and it was pretty easy and it works fine even though I used only a
400 MHz clock (80 x5). His web page is: http://www.dl5mgd.de/dds/AD9951.htm ,
since it was so easy I built two of them, one for
Hi everyone,
I am a little puzzle with this phenomenon when I run Winrad, may be someone or
Alberto can help explain it.
My setup is pretty basic, a generic soundcard (running at 48KSPS) with a AD9951
DDS driving a SDR hardware design by YU1LM (74HC4053 + 74AC74). Reception is
great with
--- In soft_radio@yahoogroups.com, D. J. Wang [EMAIL PROTECTED] wrote:
I notice instead of getting the full 48KHz bandwidth I was getting
only 24 KHz -i.e., right side of the spectrum is just a mirror image
of the left side. Identical signal can be seen at both +F and -F
position relative to
--- In soft_radio@yahoogroups.com, D. J. Wang [EMAIL PROTECTED] wrote:
Hi Janne,
Building a DDS with AD9951/4 is easier than you think. I had copied
the design by DL5MGD and it was pretty easy and it works fine even
though I used only a 400 MHz clock (80 x5). His web page is:
Hi Alberto,
Thanks for the quick reply. I am using a desktop so hopefully my 'line in
input is a true stereo one, I will check that. The culprit may be the SDR
reciver board too, I will measure the I/Q output to soundcard. Thanks again
for the clarification!!
73
de DJ/NM3R
- Original
Hi Janne,
I have built two boards, one with AD9951 and another with AD9954, since they
have the same pinouts, I used an identical PCB design. The most difficult part
is line up all 48 pins and solder them, there wasn't that many external parts
to solder after that.
I agree that using the
