2006年09月15日

AD9833 DDS card

9833_card.JPG

I am trying to make DDS card built in Soft66DB.This picture is prototype of DDS card.replace with OSC using IC socket.control software provided by AnalogDevice's homepage.Using DDS card is very easy,connecting to PC with 25 pin D-sub cable via printer port.You can set up frequency from control soft.

AD9833 is up to 12.5MHz as default. ICS512 is made to 4 times at frequency.So you can recieve also 0.5MHz to 12.5MHz with Soft66DB.
posted by ja7tdo at 15:11| Comment(211) | TrackBack(0) | 日記

2006年06月30日

IQbalance and recording file

This is Rocky's IQbalance.

IQbalance.JPG

Recording file is here.Using inverted V 10m hight with preselector.
posted by ja7tdo at 12:36| Comment(0) | TrackBack(0) | 日記

2006年06月29日

print patern and part arrangement

Print Patern

printpatern.bmp

Part arrangement

buhinhaiti.bmp

Jumper

66_dipjumper.bmp

posted by ja7tdo at 10:23| Comment(0) | TrackBack(0) | 日記

2006年06月28日

OSC

OSC is 4pin square type.x4 frequency needed.You can get any frequency 1MHz to 125MHz using SG8002DC by Epson.SG8002DC is programable OSC which is pin compatible.

http://www.epsontoyocom.co.jp/english/product/osc_set.html
posted by ja7tdo at 22:38| Comment(1) | TrackBack(0) | 日記

DIPで作ってみた(making SDR using DIP ICs)

SoftrockはいずれもSOPパッケージを使ったキットなので、かなり器用でないと難しい。コイルを巻くのもコツがいる。そこで、コイルなし、DIPパッケージのICでソフトウエアラジオを作ってみた。回路図はこれ。(SoftRock kit is using SOP package IC, it is difficult to build by hand.And making coil is difficult too.So no coils , using DIP package.Circuit diagram is here.)
4066dip.bmp完成した様子。(assembled on print board.)4066_1.JPG
posted by ja7tdo at 17:50| Comment(2) | TrackBack(0) | 日記