I would be interested in how bad the spurs are from using the DDS VFO. Typically the simplistic digital VFOs produce significant spurs which show up on the PC display making it difficult to see signals that are equal to, or lower in strength, than the spurious signals.
Dick N3HKN --- In [email protected], Rasputin Novgorod <[EMAIL PROTECTED]> wrote: > > Hi guys: > > I haven't been following this subject as well as I should, > but have been intrigued with the idea of SDR, and especially > all the neat software available. As a starter, I bought JA7TDO's > Soft66DB2 SDR and the DDS-34 DDS board for it. If they work, > a very economical way to get started. (available on eBay). > > http://zao.jp/radio/sft66db2/ > http://zao.jp/radio/sft66db2/index2.php > http://zao.jp/radio/dds34en/index_e.php > http://stores.ebay.com/HAMShopJapan > > I was wondering about using some of my existing hardware > as a front-end for this? In other words, take the IF out from > my Harris 590 radio and feed it into the Soft66DB2 SDR (bypassing > the SDR bandpass filter on the input). Then I could use > the Harris normally, but also have I/Q outputs so I get > all the SDR software features. Of course, it would > be limited by the Harris's IF filters. > > In other words, the Harris would be a Preselector/RF amp > for the Soft66DB2 SDR. Please bear in mind that I barely > know what I'm talking about. So if this is dumb, un-advisable, > or pointless, (or an interesting idea) please let me > know your thoughts. > > Sincerely > /b > > > ____________________________________________________________________________________ > Looking for last minute shopping deals? > Find them fast with Yahoo! Search. http://tools.search.yahoo.com/newsearch/category.php?category=shopping >
