[roc-chat] Re: Anyone With The Kenwood TH-D72 GPS Radio?
- From: Greg Clark <bigredbee@xxxxxxxxx>
- To: roc-chat@xxxxxxxxxxxxx
- Date: Sun, 18 Dec 2011 17:26:02 -0800
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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