http://groups.yahoo.com/group/PicoDopp/ PicoDopp Sun, 22 Nov 2009 20:43:27 GMT Andrew Rich http://groups.yahoo.com/group/PicoDopp/message/946 http://groups.yahoo.com/group/PicoDopp/message/946 Can you program ? I have been meaning to do that in LINUX and google earth. You would have to drive around a fair way to see a difference ? Andrew VK4TEC ... Sun, 22 Nov 2009 19:53:08 GMT Jerry Flanders http://groups.yahoo.com/group/PicoDopp/message/945 http://groups.yahoo.com/group/PicoDopp/message/945 Hi Greg If you find something, let us all know. Sounds like a good tool for repeater antenna maintenance guys. Jerry W4UK Sun, 22 Nov 2009 15:48:01 GMT greg_ella53 http://groups.yahoo.com/group/PicoDopp/message/944 http://groups.yahoo.com/group/PicoDopp/message/944 Hi all, Does anyone know of any Linux or Windows software that can be put on a laptop, will accept GPS input and signal strength input (from a CAT capable Thu, 15 Oct 2009 22:18:48 GMT R. Simmons http://groups.yahoo.com/group/PicoDopp/message/943 http://groups.yahoo.com/group/PicoDopp/message/943 From Bob S. There are no organized FAQs here, but there is some supplemental "background" information on the website, in the left-hand column under "background Thu, 15 Oct 2009 16:57:10 GMT ham73tux http://groups.yahoo.com/group/PicoDopp/message/942 http://groups.yahoo.com/group/PicoDopp/message/942 Hello all, I'm new to this group and I might go and get a PicoDopp soon. At the moment I have a lot of questions, but I could imagine that some of them are Thu, 24 Sep 2009 08:38:31 GMT Eduardo http://groups.yahoo.com/group/PicoDopp/message/936 http://groups.yahoo.com/group/PicoDopp/message/936 Version optimized for Firefox and Opera Real-time weather balloons, every day http://www.airnav-pt.com (the launching of the radio-sonds is between 12 and Mon, 14 Sep 2009 23:52:21 GMT R. Simmons http://groups.yahoo.com/group/PicoDopp/message/935 http://groups.yahoo.com/group/PicoDopp/message/935 Andrew... The input circuit has zener diode protection, it will start to clip the signal when it reaches 4.7 V peak-to-peak.... that works out to 360 Mon, 14 Sep 2009 23:29:01 GMT Andrew Rich http://groups.yahoo.com/group/PicoDopp/message/934 http://groups.yahoo.com/group/PicoDopp/message/934 And to take the question one step further 1. What is the best signal for a doppler DF ? A constant carrier 2. I wouldn't have thought it would matter what Mon, 14 Sep 2009 23:28:25 GMT Andrew Rich http://groups.yahoo.com/group/PicoDopp/message/933 http://groups.yahoo.com/group/PicoDopp/message/933 You should not loose sensitivity I think what you mean is will you loose modulation information ? Yes As you are rx AM on an FM system. Question for Bob What Mon, 14 Sep 2009 22:42:57 GMT resdon111 http://groups.yahoo.com/group/PicoDopp/message/932 http://groups.yahoo.com/group/PicoDopp/message/932 If I understand you correctly, the system will still track the signal without a problem (i.e a carrier wave is a carrier wave, regardless of modulation) but Mon, 14 Sep 2009 19:33:13 GMT R. Simmons http://groups.yahoo.com/group/PicoDopp/message/931 http://groups.yahoo.com/group/PicoDopp/message/931 From Bob S. You should not lose any RF sensitivity ( = range ) but the AM ELT modulation will be 100% lost.... that is not important for the Doppler, the FM Mon, 14 Sep 2009 19:19:30 GMT resdon111 http://groups.yahoo.com/group/PicoDopp/message/930 http://groups.yahoo.com/group/PicoDopp/message/930 Do you lose any sensitivity because of it? Mon, 14 Sep 2009 18:44:55 GMT Pat Halahan http://groups.yahoo.com/group/PicoDopp/message/929 http://groups.yahoo.com/group/PicoDopp/message/929 A PicoDopp can locate an AM signal by using an FM receiver. The frequency modulation is created in switching the antennas. I use this technique for locating Mon, 14 Sep 2009 17:59:44 GMT resdon111 http://groups.yahoo.com/group/PicoDopp/message/928 http://groups.yahoo.com/group/PicoDopp/message/928 Here's a question for the board. How effective would the PicoDopp system be at locating an AM signal in the aircraft band, specifically on 121.5Mhz (some of Tue, 25 Aug 2009 19:04:46 GMT gm7svk http://groups.yahoo.com/group/PicoDopp/message/927 http://groups.yahoo.com/group/PicoDopp/message/927 Thank you Bob, The correct url (sorry) :- http://www.diodecomms.co.uk/product_info.php?products_id=30 I will re-check as you have suggested. Looking at TX