You can do RDF with any 70cm handheld with a Tele* product. You don't need to decode the packers for RDF
-Kevin > On Jun 2, 2015, at 7:44 AM, Kurt <ksav...@sbcglobal.net> wrote: > > The ham stuff is only good with FM trackers only. Walston/Comspec use SSB or > CW modes that > perhaps a Kenwood F6A might be workable with. I've ground tested but not > done any range checking. > Arrow sells an offset attenuator and so does Marvin West: > http://www.west.net/~marvin/k0ov.htm > I've also have one of his 2 Meter beacons for fun: > http://www.west.net/~marvin/microhnt.htm > I thought Keith was using a VX-8GR and then went with an FT1DR for APRS > tracking. The -6R doesn't do APRS but could be used for FM RDF. Loop antenna > might not be as sensitive at range than a yagi. > A good offset attenuator like Marvin's helps very close so I don't think you > have to invest in a loop. > I've never seen anyone use a loop in six Midwest Powers I've attended. > Granted a loop is smaller and easier to carry. If you can get close enough > with a Yagi/attenuator, you should be able to find it. > > Kurt KC9LDH > ------------------------------------------- > On Mon, 6/1/15, Max McHatton <maxi...@charter.net> wrote: > > Subject: Re: [altusmetrum] DF with Yaesu VX-6R > To: altusmetrum@lists.gag.com > Date: Monday, June 1, 2015, 9:48 PM > > Rob, Kevin stated correctly, that > you will need a directional antenna and attenuators or a > variable attenuator. An in-line analogue signal > strength meter is also very usefull. I used my VX-6R > last year, during my successful L-2 flight. I had a 3 > element arrow yaggi antenna. I didn’t yet have > an attenuator. So I utilized a trick I learned when > DFing ELT’s. When I got close, I disconnected > the antenna. WARNING: Do Not Transmit without an > antenna. A loop antenna is more directional than a > yaggi; so I plan to buy one, and a set of in-line > attenuators. There are some other helpful tricks, like > body shadowing to determine if the signal is in front or > behind. Another trick I tried with limited success was > utilizing the top null of a whip. Most whip antennas > have a radiation pattern like a doughnut, with a null on > top. So theoretically, if you pan the HT horizontally, > you should have a null, when pointing the whip antenna > directly at the RF source. Max Mc in Medford > > -----Inline Attachment Follows----- > > _______________________________________________ > altusmetrum mailing list > altusmetrum@lists.gag.com > http://lists.gag.com/mailman/listinfo/altusmetrum > > _______________________________________________ > altusmetrum mailing list > altusmetrum@lists.gag.com > http://lists.gag.com/mailman/listinfo/altusmetrum _______________________________________________ altusmetrum mailing list altusmetrum@lists.gag.com http://lists.gag.com/mailman/listinfo/altusmetrum
