Article: 50961 of rec.radio.amateur.digital.misc Message-ID: From: news Subject: Re: dsp References: Date: Sun, 03 Jul 2005 13:43:50 GMT In message , larry writes > >Does anyone know of some fairly welknown chips that I can investigate that >might help me to learn about dsp and how I can incorporate it into my >receiver... > Hi Larry. There's a very interesting article in the July 2005 issue of RSGB's RadCom magazine, by Phil Harman (VK6APH, pvharman@arach.net.au) and Steve Ireland (VK6VZ, vk6vz@arach.net.au). The article describes the practicalities of using the KK7P DSP board to build a 1.8MHz receiver. This may be a good starting point for your project. -- 73 Ian, G3NRW Article: 50962 of rec.radio.amateur.digital.misc From: "xpyttl" References: <1120365426.963267.266950@g44g2000cwa.googlegroups.com> Subject: Re: dsp Message-ID: Date: Sun, 3 Jul 2005 10:25:33 -0400 "an_old_friend" wrote in message news:1120365426.963267.266950@g44g2000cwa.googlegroups.com... >> Does anyone know of some fairly welknown chips that I can investigate >> that >> might help me to learn about dsp and how I can incorporate it into my >> receiver... In "Experimental Methods in RF Design" there is a DSP project that might be worth looking at, however, most of the DSP chips are still pretty pricey, and generally only available in hard to work with packages, which means buying demo or experimenter boards that are even more pricey. A relatively low-cost way of getting into it without going to teeny pin spacing is to look into the dsPIC family from Microchip. In some ways, it is a little bit of a lightweight when it comes to DSP, but some folks, notably Leon Heller, have had some success. You might look for Leon's postings on the microchip DSP forum at http://forum.microchip.com/tt.asp?forumid=153 for a hint at what he has been doing. Unfortunately, there are relatively few programmers for the dsPIC so you either need to build something or buy a programmer from Microchip, still quite a bit cheaper than a DSP board. Building something means building a programmer that includes a PIC, so you need to build a programmer to program that part first! The plain PIC programmer is a pretty quick and simple thing, but it adds yet another step in your way. > What I would do is serch for a dsp program tat works on a PC Sound card > running your speaker output to the mic input. I have read about such > programs, but i lack a link right off. The problem with that is the sound card manufacturers have gotten pretty tight with their programming specs. I'm afraid you will spend more time working out the sound card interfaces than learning about DSP. .. Article: 50963 of rec.radio.amateur.digital.misc From: Ken Subject: Hardware sound card? Or software? Message-ID: <8hrgc1tl3hr9lafki5qtikcauobiq4ar51@4ax.com> Date: Sun, 03 Jul 2005 19:03:48 -0400 Are these things really external sound cards, like the $40 and up ones >from Creative Labs? Or are they simply level converters with the PC doing the A/D conversion? http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=3701&item=5214705434&rd=1 http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=44982&item=5215243659&rd=1 If you want to run more than one sound-card-radio app at a time, you need more that one sound card. It would be nice if these could do the job without loading up your mainframe CPU. Ken KC2JDY Ken (to reply via email remove "zz" from address) Article: 50964 of rec.radio.amateur.digital.misc From: ke6cqk Subject: Help with FNpack Date: Sun, 03 Jul 2005 22:19:26 -0700 Message-ID: <7jhhc153mml73fmm8ul9sb56vpctlu7881@4ax.com> In the documentation for FNpack it refers to setup.exe but I can not find it in either the zip file or the site that it comes from. Help. Article: 50965 of rec.radio.amateur.digital.misc From: "Ham Radio" Subject: Ham radio beginner? Message-ID: Date: Wed, 06 Jul 2005 16:02:17 GMT If you want to get into ham radio and don't know how to start, check out: http://www.hamradiostarter.com You will find everything you need to get your license and get started in ham radio.