[digitalradio] Re: SSB on 14070
--- In digitalradio@yahoogroups.com, Rick [EMAIL PROTECTED] wrote: I have been hearing more activity that appears to be illegal voice than I have ever heard in the past 50 years. It is so bad that a number of times I have been hearing voice transmissions that interfere with WWV reception! On 8 Feb, midday US PST, I heard a recorded voice just saying what sounded like Five over and over again. My radio was tuned to 14070. I also witnessed some digital modes I'm not familiar with that were much wider than PSK31 - as wide as MT63 at least but I don't think that's what they were. They just swamped maybe 10 different PSK31 QSOs, at least at my QTH in San Diego. I don't know if the modes to be used at 14070 are a gentlepersons' agreement or are FCC/ITU proscribed (I assume the former) but I know that wide modes are usually used closer to 14100 so these were either rude or clueless people. Phil Wells AF6AV San Diego
[digitalradio] Comaparison Table of Major Digital Mode and Logging Apps
Hi All, Am fairly new to ham radio and I read a lot about the different apps for different modes and particularly the multi-function apps like HRD and MixW (for which I have a license) and it's all pretty daunting. I'm wondering if anyone has done a comparison of features of the different offerings, perhaps a spreadsheet, either for their personal benefit or posted somewhere. I didn't find anything after a brief Google search and a search of this forum. The purpose of such a document would not be to say which is best, like a Consumer Reports rating, but simply to show which have what features so that a newcomer could decide which one(s) might best satisfy *their* needs. Certainly, such a doc would be out of date within a few weeks of release since most programs are always being upgraded, but it would be a start. I might attempt this on my own at some point but don't want to reinvent the wheel so thought I'd check here, first. 73 to all Phil AF6AV San Diego
[digitalradio] Re: Commercial APRS
Rod: Here's the flagship tracking product for truck fleets, from Qualcomm (the folks who also make the CDMA chips for your celel phone): http://www.qualcomm.com/technology/assetmanagement/platforms/omnitracs.html Phil AF6AV --- In digitalradio@yahoogroups.com, Rodney [EMAIL PROTECTED] wrote: Guys, I work for our local County as their Radio Tech and our Road Department would like to be able to keep tabs on some, not all, of their vehicles, especially in areas where their cell phone coverage is flaky at best. They have a UHF system located on a mountain top approximately 4250', centrally located within the County. Not having any experience with APRS, would this be a viable way to do this? I know that APRS can be monitored via the internet, but is that strictly for Amateur use, or can the software be purchased for commercial useage? Thanks! Rod KC7CJO Clackamas County Electronic Services, Radio Shop - Looking for last minute shopping deals? Find them fast with Yahoo! Search.
[digitalradio] Re: General questions about SSTV
--- In digitalradio@yahoogroups.com, Bob Christenson [EMAIL PROTECTED] wrote: Hi guys, I'm looking into SSTV. I see that popular frequencies to operate it are 7171, 7173, 14230 and 14233. Are these pictures sent using an analog or digital method? What popular software is being used? Is there another Yahoo group for this? Thanks for the help. Bob C (WU9Q) Hi Bob, According to the ARRL HF Digital Handbook, 4th Ed, pg 12-10, digital SSTV using dedicated apps like DigTRX and HamPAL plus HamDRM which does audio too, typically occurs on 14.233, 3kc above the traditional analog SSTV frequency. 73 Phil AF6AV
[digitalradio] Re: Current balun
--- In digitalradio@yahoogroups.com, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Dave wrote: I understand the basics of using a balun, but have a question about the specifics. Sorry to have to ask this Dave, but if you understand the basics, why don't you know the difference between a 6:1 and a 4:1 transformer ratio? WOW! What a nice, friendly forum this is! Makes a person want to post questions and learn (but be careful how you WORD those questions... hoo boy) Phil Wells AF6AV
