[roc-chat] Re: Anyone With The Kenwood TH-D72 GPS Radio?
- From: Gene Engelgau <gene@xxxxxxxxxxxxxxxxxxxxxxx>
- To: roc-chat@xxxxxxxxxxxxx
- Date: Mon, 19 Dec 2011 08:55:15 -0800
Hi all, as I have an opinion (having tracked BRB GPS for quite some time) I
wanted to add my $.02... I like to use the D72 only, and that usually
get's me to visual range. If not the bearing still works even up close so
just follow it in. If I do need to know more I use a yagi anyway to run
down the rocket and I just fox-hunt it the last little bit if needed. I
have not needed to enter cords in my Garmin as I'm always close enough.
But as always there are many ways to do this any way that works for you is
a good way!
--
- Regards
Gene Engelgau
KI6IBL, NAR 86770 / TRA 12243 - L3
http://fruitychutes.com - Consumer Aerospace Recovery Solutions
Follow us on Twitter! <http://twitter.com/fruitychutes/>
408-499-9050
On Mon, Dec 19, 2011 at 8:44 AM, Richard <rocket_hall@xxxxxxxxxxxxx> wrote:
> Mike
>
> If you are still interested in Yagi antennas here are some links:
>
> Do IT Yourself: http://www.nr6ca.org/70cmyagi.html do a search there
> are some designs that use old metal measuring tape for elements.
>
> Arrow Antenna's: http://www.arrowantennas.com/sub/arrowiiyagi.html I have
> the (http://www.arrowantennas.com/arrowii/146-437.html) for working
> satellites and remove the 2m elements when tracking. This is a 7 element
> antenna and is around 2' long, one of the 3 or 5 elements Yagi would work
> for most tracking needs. The extra gain helps pull in the signal and what
> if the GPS loses lock you can still track the transmitter.
>
> Richard
>
> -----Original Message-----
> From: Allen Farrington **
> Sent: Dec 19, 2011 6:53 AM
> To: "roc-chat@xxxxxxxxxxxxx" **
> Subject: [roc-chat] Re: Anyone With The Kenwood TH-D72 GPS Radio?
>
> ********
> You can put the D72 into km mode (menu 2-C on my version) which makes the
> display 100 meters. Without WAIS, that's as good as it gets. Like most
> people, I just enter it into my Garmin and drive/walk to it.
>
> Allen
> Terseness and mis-spelling courtesy of my iPhone
>
> On Dec 18, 2011, at 5:26 PM, Greg Clark <bigredbee@xxxxxxxxx> wrote:
>
> Why would you bother doing that, negates the whole point of having a GPS
> in the first place -- the GPS should be able to get you with 30 feet. If
> the Kenwood radio doesn't support finer granularity than .1 mile, then
> ditch it and use a cheapo handheld GPS (or even your Iphone) and type the
> coordinates into that (that's what I do) . Used Garmin Etrex's are $50 on
> ebay.
>
> -- Greg
>
> On Sun, Dec 18, 2011 at 5:06 PM, Lesnick, Mike <mikel@xxxxxxxxxxx> wrote:
>
>> Richard,****
>>
>> ** **
>>
>> Thanks for the input. So bottom line is that when I’m close I would
>> switch to the Yagi antenna and use it like a traditional radio beacon
>> (non-GPS) directional signal finding radio. Is there a particular Yagi
>> antenna you would recommend for the 70cm transmitter, the BeeLine 70 cm GPS
>> transmitter?****
>>
>> ** **
>>
>> Mike****
>>
>> ** **
>>
>> Michael Lesnick****
>>
>> Axiom Healthcare Group****
>>
>> 18135 Santa Lauretta Cir****
>>
>> Fountain Valley, CA 92708****
>>
>> 714-594-5720 - Office Phone****
>>
>> 714-323-5968 - Cell****
>>
>> 714-968-7076 - Fax****
>>
>> MikeL@xxxxxxxxxxx****
>>
>> ** **
>>
>> ** **
>>
>> ** **
>>
>> *From:* roc-chat-bounce@xxxxxxxxxxxxx [mailto:
>> roc-chat-bounce@xxxxxxxxxxxxx] *On Behalf Of *Richard
>> *Sent:* Sunday, December 18, 2011 12:52 PM
>> *To:* roc-chat@xxxxxxxxxxxxx; roc-chat@xxxxxxxxxxxxx
>>
>> *Subject:* [roc-chat] Re: Anyone With The Kenwood TH-D72 GPS Radio?****
>>
>> ** **
>>
>> Hi Michael
>> I thrown in my experience in tracking. I have a Kenwood F6A I use
>> for tracking and a Arrow Yagi antenna(http://www.arrowantennas.com/).
>> You can also make your own Yagi out of a old measuring tape do an internet
>> search also look up foxhunting, transmitter hunting. You'll need some kind
>> of directional ant. to aid in zeroing in on you rocket transmitter. In the
>> brush at the edges of the lake you can walk by a rocket that is 50-100' if
>> the brush is dense enough. By moving the the ant. side to side and watching
>> the signal strength meter you can zero in the location. It maybe necessary
>> to tune your receiver off freq. a bit to attenuate the signal as you get
>> closer. A Yagi can also aid you in locating the signal after the rocket has
>> landed. If the transmitter antenna is damaged (bent, wrapped up in shock
>> cords, etc.) or if it's in a low spot (ditch) the signal can be lost. It is
>> sometime necessary to get on a hill or a rise to get a direction (think of
>> a 10-15k flight on a breezy day) members have found rockets on the other
>> side of the hills to the north. On a big level 2 or level 3 project it's a
>> little windy you launch and the main unexpectedly deploys at apogee and now
>> your looking for your rocket 4-5+ miles down range. Even with GPS you need
>> the high gain of a Yagi or similar antenna to get good data.
>> Practice, taking your Beeline out and get someone to hide it and
>> practice finding it. Your local ham clubs will have transmitter hunts
>> monthly in your area, talk to the participants they'll have good advice.
>>
>> Good luck
>> Richard C. Hall
>> TRA 11515 AF6IH****
>>
>> -----Original Message-----
>> From: Greg Clark
>> Sent: Dec 17, 2011 3:29 PM
>> To: roc-chat@xxxxxxxxxxxxx
>> Subject: [roc-chat] Re: Anyone With The Kenwood TH-D72 GPS Radio?
>>
>> I don't use my Kenwood that way -- maybe turned on the GPS once or twice.
>> I use a handheld GPS to track down the rocket.****
>>
>> ** **
>>
>> -- Greg K7RKT****
>>
>> On Sat, Dec 17, 2011 at 3:20 PM, Dennis Dinga <dennis@xxxxxxxxx> wrote:**
>> **
>>
>> OK Mike. I'll wait to others on roc-chat reply. I know that Allen
>> Farrington and maybe Rob Bringham use Kenwood APRS radios. I'm hoping they
>> will have your answer before I go further. Greg K7RKT should have the
>> answer too.
>>
>> -Dennis****
>>
>>
>>
>>
>> At 01:50 PM 12/17/2011, you wrote:
>>
>> ****
>>
>> Dennis
>>
>> Thanks for the quick reply. I’ve used the combination a few time now and
>> the transmitter and receiver work well together. Unfortunately, the scale
>> does not change when I get close. If I’m closer than 1/10 of a mile, the
>> reading is simply 0.0 mi. If you have anyone who may have an answer I’d
>> appreciate it. If Im in a flat open deters (like the lakebed 500 feet is
>> fine, but if there are a lot of obstructions it could be hidden and 500
>> feet resolution will not be very good.
>>
>> Mike
>>
>> Michael Lesnick
>> Axiom Healthcare Group
>> 18135 Santa Lauretta Cir
>> Fountain Valley, CA 92708
>> 714-594-5720 - Office Phone
>> 714-323-5968 - Cell
>> 714-968-7076 - Fax
>> MikeL@xxxxxxxxxxx
>>
>>
>>
>> *From:* roc-chat-bounce@xxxxxxxxxxxxx
>> [mailto:roc-chat-bounce@xxxxxxxxxxxxx<roc-chat-bounce@xxxxxxxxxxxxx>]
>> *On Behalf Of *Dennis Dinga
>> *Sent:* Saturday, December 17, 2011 1:41 PM
>> *To:* roc-chat@xxxxxxxxxxxxx
>> *Subject:* [roc-chat] Re: Anyone With The Kenwood TH-D72 GPS Radio?
>>
>> Mike-
>>
>> I can't answer your question, but have you tried an actual tracking
>> test? *Maybe* when you get to within 500ft of the rocket, the TH-D72
>> automatically changes resolution.
>>
>> If you don't get an answer here before Monday, drop me an email and I'll
>> ask the Stratofox trackers up in the Bay Area. They mostly use the Kenwood
>> APRS radios.
>>
>> On a different note, a balloon was launched from NorCal last weekend and
>> was tracked via APRS all the way to the Mediterranean Sea before it
>> deflated north of Algeria. Pretty good for amateurs. The track is still
>> on www.aprs.fi Type in K6RPT-11.
>>
>> 73, Dennis N6DD
>>
>>
>>
>> At 12:59 PM 12/17/2011, you wrote:
>>
>> I have the Kenwood TH-D72 radio and the BeeLine 70cm GPS transmitter.
>> The Kenwood radio display screen shows the distance from the radio to the
>> transmitter as well as a compass with an arrow that points the direction of
>> the transmitter.
>>
>> The problem is that the distance scale is in 1/10 of a mile (500 feet)
>> increments. Does anyone know if the distance scale can be changed to feet
>> of meters or anything more precise than 1/10 of a mile?
>>
>> Mike
>>
>> Michael Lesnick
>> Axiom Healthcare Group
>> 18135 Santa Lauretta Cir
>> Fountain Valley, CA 92708
>> 714-594-5720 - Office Phone
>> 714-323-5968 - Cell
>> 714-968-7076 - Fax
>> MikeL@xxxxxxxxxxx
>>
>>
>>
>>
>> Dennis Dinga dennis@xxxxxxxxx
>> H: 909-860-1515 C: 951-313-5192
>> 1024 Twin Canyon, Diamond Bar, CA 91765
>> N6DD TRA 8427 L3 ****
>>
>> Dennis Dinga dennis@xxxxxxxxx
>> H: 909-860-1515 C: 951-313-5192
>> 1024 Twin Canyon, Diamond Bar, CA 91765
>> N6DD TRA 8427 L3 ****
>>
>> ** **
>>
>> -- ROC-Chat mailing list roc-chat@xxxxxxxxxxxxx
>> //www.freelists.org/list/roc-chat ****
>>
>
> ********
>
> -- ROC-Chat mailing list roc-chat@xxxxxxxxxxxxx
> //www.freelists.org/list/roc-chat
>
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