HFU HF Underground

General Category => For Sale / Wanted / Barter => Topic started by: CoolAM Radio on March 06, 2019, 1521 UTC

Title: DDS Signal Generator PCB
Post by: CoolAM Radio on March 06, 2019, 1521 UTC

(http://www.swcholland.com/wp-content/uploads/2016/11/DDS-150x150.jpg)

For Sale  -  DDS SIGNAL GENERATOR PRINT

For those interested

Check website Shortwave Combination Holland
@
http://www.swcholland.com/zendapparatuur/ (http://www.swcholland.com/zendapparatuur/)

André
#CoolAMRadio
the Netherlands

Title: Re: DDS Signal Generator PCB
Post by: Radio Station on March 11, 2019, 1519 UTC

The AD9850 (seen in the photo of this DDS ) and AD9851 DDS boards off eBay do not use a TCXO oscillatior time base so they will drift around a bit. If you use it for AM that's fine. If you want high stablity I would change it to a .1 PPM TCXO this can be easily added to the AD9851 30 MHz time base. You can buy the TCXO off eBay. The DDS I designed is better than .01 Hz stability.

Title: Re: DDS Signal Generator PCB
Post by: Teotwaki on May 08, 2019, 1320 UTC

60 Euros or roughly $68 US

Specs:

• Frequency Range 100KHz to 30MHz

• Steps: 1Hz 1KHz 100KHz en 1MHz.

•  12 volt (no current draw supplied but can't be much)

LARGE Photo from their site

(http://www.swcholland.com/wp-content/uploads/2016/11/DDS.jpg)