> On Jun 1, 2015, at 10:47 PM, [email protected] wrote: > > Send altusmetrum mailing list submissions to > [email protected] > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.gag.com/mailman/listinfo/altusmetrum > or, via email, send a message with subject or body 'help' to > [email protected] > > You can reach the person managing the list at > [email protected] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of altusmetrum digest..." > > > Today's Topics: > > 1. customer ebay example (Bdale Garbee) > 2. Direction finding how-to? (Rob Derstadt) > 3. Re: Direction finding how-to? (Kevin Trojanowski) > 4. Re: Direction finding how-to? (Clay & Carly Dunsworth) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 01 Jun 2015 14:15:56 -0600 > From: Bdale Garbee <[email protected]> > To: [email protected] > Subject: [altusmetrum] customer ebay example > Message-ID: <[email protected]> > Content-Type: text/plain; charset="us-ascii" > > A customer installed both a TeleMega and EasyMini in a LOC 3" airframe > kit's ebay, and shared photos with us. It's a very tidy install, and he > said we're free to share the photos, so here they are! > > https://www.flickr.com/gp/96008345@N03/6uk37b > > Bdale > -------------- next part -------------- > A non-text attachment was scrubbed... > Name: signature.asc > Type: application/pgp-signature > Size: 810 bytes > Desc: not available > URL: > <http://lists.gag.com/pipermail/altusmetrum/attachments/20150601/d081d5a5/attachment-0001.sig> > > ------------------------------ > > Message: 2 > Date: Mon, 1 Jun 2015 15:35:27 -0600 > From: Rob Derstadt <[email protected]> > To: [email protected] > Subject: [altusmetrum] Direction finding how-to? > Message-ID: > <cacycnxtz3kkqxuzhtizksnedkkmo9dnipqftndn82k_zg1y...@mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > Hi, > > Does anyone have any instructions (or good how-to references) on how to do > direction finding with a HT and the TeleMetrum or TeleGPS? I read on the > website that it can be done: > > "... you can use that with your antenna to direction-find the rocket on the > ground...Keith and Bdale both currently own and use the Yaesu VX-6R > <http://yaesu.com/indexVS.cfm?cmd=DisplayProducts&ProdCatID=111&encProdID=4C6F204F6FEBB5BAFA58BCC1C131EAC0&DivisionID=65&isArchived=0> > at > launches." > > I own the VX-6X (albeit I am only familiar with the basic APRS stuff on > it). If anyone can point me at some information on how to use this to > direction find with the Tele* units, I'd greatly appreciate it. Thanks. > > Best regards, > Rob > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <http://lists.gag.com/pipermail/altusmetrum/attachments/20150601/1ab80e21/attachment-0001.html> > > ------------------------------ > > Message: 3 > Date: Mon, 1 Jun 2015 17:50:15 -0500 > From: "Kevin Trojanowski" <[email protected]> > To: "'Altus Metrum'" <[email protected]> > Subject: Re: [altusmetrum] Direction finding how-to? > Message-ID: <[email protected]> > Content-Type: text/plain; charset="utf-8" > > Here's a good article on RDF written by Sue McMurray years ago. > > > > http://rocketwonk.tumblr.com/post/59400638064/the-sue-mcmurray-tracking-article > > > > You'll want a Yagi antenna and an offset attenuator can make your life > easier, as well. > > > > -Kevin > > > > From: altusmetrum [mailto:[email protected]] On Behalf Of Rob > Derstadt > Sent: Monday, June 01, 2015 4:35 PM > To: [email protected] > Subject: [altusmetrum] Direction finding how-to? > > > > Hi, > > > > Does anyone have any instructions (or good how-to references) on how to do > direction finding with a HT and the TeleMetrum or TeleGPS? I read on the > website that it can be done: > > > > "... you can use that with your antenna to direction-find the rocket on the > ground...Keith and Bdale both currently own and use the > <http://yaesu.com/indexVS.cfm?cmd=DisplayProducts&ProdCatID=111&encProdID=4C6F204F6FEBB5BAFA58BCC1C131EAC0&DivisionID=65&isArchived=0> > Yaesu VX-6R at launches." > > > > I own the VX-6X (albeit I am only familiar with the basic APRS stuff on it). > If anyone can point me at some information on how to use this to direction > find with the Tele* units, I'd greatly appreciate it. Thanks. > > > > Best regards, > > Rob > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <http://lists.gag.com/pipermail/altusmetrum/attachments/20150601/5ddd1d46/attachment-0001.html> > > ------------------------------ > > Message: 4 > Date: Mon, 1 Jun 2015 21:50:06 -0500 > From: "Clay & Carly Dunsworth" <[email protected]> > To: <[email protected]> > Subject: Re: [altusmetrum] Direction finding how-to? > Message-ID: <4A7DCCB216134ED19B2BC5C9EFC33A38@Turbo> > Content-Type: text/plain; charset="utf-8" > > I lost my TM on my last flight... ughh..... My son misses his rocket I am > sure wheat combines need rocket food. > > But I have found every flight on my TM thorugh RDF. > I use a scanner that sets to a standard frequency. For instance 434.00000 > mhz I use an arrow 7 element > antenna...http://arrowantennas.com/arrowii/440-7ii.html (they have antennas > that are 3 and 5 elements ? this reduces tha gain, and increases the width of > reception.) The number of elements have their tradoffs between ?pointyness- > and ? gain?. Less pointy, means less gain, ect... I know people who?ve > tracked to 20k?ish with 3 elements versions. > > now, depending on your set up.. if you select 434.00 mhz(whatever channel you > specify), your actual emitted frequency is somewhere around that... but not > exactly. > I use a scanner (from radio shack) where I can set my radio to 434.00000, I > then listen for my Telemetrum signals. (continuity at start up is one of > them-love that) usually I will step up and down in frequency in .00625mhz. > until I find what I consider would be the ?strongest?. Even if 434.00625, > seems to be best, that is where I lock my scanner. > > Now,.. the TM signal, with a regular radio is going to be one of the hardest > things to ?reverse gain? .. I launched am M about a year ago, and up and > down, I could not farm a direction from the signal... it was too strong the > whole time. however, signal fell dead, upon landing as was expected. I > keep my ?strongest? frequency untill I get a bead on an on ground signal...a > lot of people first search for a signal using just a reqular whip or > (omni-directional antenna), but using a yagi usually you can tell within > about 30degrees which direction to walk. while using a yagi, the signal can > reverse polarize, so as you get close, direction becomes harder. depending on > the pattern, you feel like you walk in a circle to get there sometimes. That > is when I begin to shift my scanner, up or down .00625mhz, or even in some > cases I?ve gone .01250mhz to each side. (usually you have to turn off the > squeltch and get a lot of fuzz during this.) But, if you can weaken the > signal when its > too stro > ng, it makes the rdf easier. I suggest going both up and down, because > usually the offset is not evenly divided. so you may be able to offset up > .01250, but you cannot receive signal going down that far. With a yaesu, > you may want to preprogram these offsets to the channel you select. my > scanner I use to listen to the airport frequency we fly rockets from, so its > really a dual purpose. > > In the 8?-0 tall corn I recovered my rocket, this method got me beeping close > enough to smell the burnt bp before seeing my rocket... (that smell was ... > ?oh my gosh my rocket is right here... where is it...?) > > I haven?t spent the money on an attenuator yet, not sure as if I need one. > > > I have wondered if a potentiometer in line with the yagi would make it easier? > aprs is a whole other cat.... > Clay ?at square one? > > > From: Rob Derstadt > Sent: Monday, June 01, 2015 4:35 PM > To: [email protected] > Subject: [altusmetrum] Direction finding how-to? > > Hi, > > > Does anyone have any instructions (or good how-to references) on how to do > direction finding with a HT and the TeleMetrum or TeleGPS? I read on the > website that it can be done: > > > "... you can use that with your antenna to direction-find the rocket on the > ground...Keith and Bdale both currently own and use the Yaesu VX-6R at > launches." > > > > I own the VX-6X (albeit I am only familiar with the basic APRS stuff on it). > If anyone can point me at some information on how to use this to direction > find with the Tele* units, I'd greatly appreciate it. Thanks. > > > Best regards, > Rob > > > -------------------------------------------------------------------------------- > _______________________________________________ > altusmetrum mailing list > [email protected] > http://lists.gag.com/mailman/listinfo/altusmetrum > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <http://lists.gag.com/pipermail/altusmetrum/attachments/20150601/3f596a67/attachment.html> > -------------- next part -------------- > A non-text attachment was scrubbed... > Name: wlEmoticon-smile[1].png > Type: image/png > Size: 1046 bytes > Desc: not available > URL: > <http://lists.gag.com/pipermail/altusmetrum/attachments/20150601/3f596a67/attachment.png> > > ------------------------------ > > Subject: Digest Footer > > _______________________________________________ > altusmetrum mailing list > [email protected] > http://lists.gag.com/mailman/listinfo/altusmetrum > > > ------------------------------ > > End of altusmetrum Digest, Vol 55, Issue 1 > ******************************************
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