[roc-chat] Re: Anyone With The Kenwood TH-D72 GPS Radio?
- From: Allen Coleman <allencoleman46@xxxxxxxxx>
- To: roc-chat@xxxxxxxxxxxxx
- Date: Mon, 19 Dec 2011 08:42:05 -0800
Don't you have to have some device to receive the GPS transmissions from
the rocket in order to enter the coordinates into a Garmin? Which brings
up the question in my mind, does Garmin (or anyone else) sell a receiver
with 30 ft mapping granularity that can receive transmission from a BeeLine
rocket tranmitter and convert them into coordinates?
Allen Coleman
On Sun, 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 ****
>>
>
>
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