I was looking at the "(AD9850) DDS Daughter Card" and the new version is from 0 to 60 MHz. Its around $38.00 I found a software in India to run it and it is very nice looking. I tried to upload that and the site gave me an error report on it so I will try again. Or try one of my sites. The DDS Card comes with its own little software but I think you will like the new thing better.
DDS VFO (Controller) Version 2 Look for DDS Controller V 2.4.1 Robert J. Hillard "<http://www.amqrp.org/> DDS-60 kit" AD9850 DDS Chip: Analog Devices possible free samples also. Alternate site: <http://www.njqrp.org/dds> I know that for now the DDS is the only way, and the best way to get full HF coverage and into 6 meters. Huff & Puff ideas are yet coming along and may result in a kit later in the year or so. I see them being used in the tapping into receiver i.f. ideas for 455 kHz and 10.7 MHz rather than making full HF coverage possible. Some time later on in the future that might come about I hope. I am going to use the current one I have with this chip from the get go. >>> These AD8333 I/Q Modulator chips appear to be usable without any wideband transformers at the antenna or to split the antenna and so, we should get full HF coverage without allot of attenuation across the band. >>> There may be more than enough gain in the IC. <<< We would have to have a good toroid design to cover all of the HF without switching toroids if we tried to use them. SR 40 has a good bandwidth but you can see it drop off on its graph. I wonder now about the design in terms of noise with or with out a toroid? Toroids are self sheilding and might solve a problem for us if we encounter one. I do know here that at around 15 to 17 MHz a commercial SDR receiver starts to run out of gain. I was tuned into a truck on 11 meters out on the road in front of here, and then about a mile down the road I lost him here in these mountains. That gain in no way compares to my Galaxy 11 meter radio or my HF Yaesu set up. Rest assured though, the QSD section with the DDS is capable of unreal detection of the weakest Amateur band signals 14 MHz and down. SDRadio's display is sensitive down to around the bottom of -160 dB. The AD8333 is rated 161 dB gain. SDRadio's gain is extremely loud at -80 dB. We might run into the need to attenuate the AD8333 chip. <<< Dan _____________________________________________________________________ PrivatePhone - FREE telephone number & voicemail. A number so private, you can make it public. http://www.privatephone.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/soft_radio/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/soft_radio/join (Yahoo! ID required) <*> To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
