GARMIN 010-11049-00 Astro DC 30 Wirelesss Collar Transmitter Review

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(More customer reviews)The original astro came packaged with a small rechargable orange transmitter and a velcro harness to put it on your dog. Anyone mixing velcro and dog hair knows what happens next. There was also a plastic clip you could use to screw the transmitter onto your dog's existing collar, but my dog broke 2 of those clips giving chase.
When the DC30 came out it was a major improvement. Garmin realized that the heavy transmitter would sag down where the dog tags hang, so they put it there intentionally instead of trying to force it on top.
The passive antenna in the original unit was replaced with an active amplified gps antenna sewn into the collar facing the sky. A small thin cable is hidden in the collar to carry the gps signal down to the transmitter below.
Finally, the transmit antenna was redesigned for vhf frequencies and realizes 1dB more gain over the previous transmitter - not alot but still an improvement.
In short, the DC 30 makes the astro a real dog tracker. I bought the collar separately and was immediately impressed. No longer did I have to scrape dog hair from the velcro on their earlier design!


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Garmin DC 30 Transmitter Collar. This rugged, all weather collar has an integrated GPS transmitter and antenna that work with the Astro 220 to ensure that your dog will never be lost again. Plus, its specially weighted so the antenna will always point to the sky for optimal signal. When teamed up with the Astro 220, this system will have you hunting in no time. The DC 30, in combination with the Astro 220, pinpoints your dogs position every 5 seconds and runs for 17 hours. You can extend the battery life of the DC 30 by changing the position transmit rate from 5 to 10 or 30 seconds, enabling the DC 30 to work up to 36 hours in the field on one charge. You will know if your dog is pointing, sitting, moving or treeing. Where its at. Where its been. How fast its moving and how far its gone.

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DeLorme Earthmate PN Series Carrying Case Review

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(More customer reviews)Used it sheep hunting in MT. Attaches easily and securely to backback strap - good there. Case is too tight though, hard to get GPS out. Forget about using the battery storage built in - if you do, you can' get the GPS out of the case. I ended up tying a short loop of cord throuh the top loop of the GPS to be able to quickly extract the unit from the case. Other issue with hunting is the large velcro secured flap that covers and stows the GPS. It's LOUD when opening - I'm considering modifying it with a snap-lock buckle. Really, you don't need the velcro strap - the unit fits snug enough not to need it.

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Designed exclusively for the Earthmate PN receivers. Protects receiver, provides easy access

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DeLorme Earthmate PN Series Power Kit Review

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(More customer reviews)I received a new Delorme PN-40 for Christmas (thanks, Santa!) and immediately ordered this travel kit from Amazon. While waiting on the order I used both Energizer "Industrial" alkaline batteries (one set, lasted probably 12+ hours but I didn't time it) Ray-o-vac el-cheapo batteries (lasted about 8 or so hours, again, didn't time it). But I usually use a GPS receiver while geocaching, and I'm very often in a vehicle, on an ATV, or on a bicycle. My truck and the ATV have 12V power points, so why not use them for power?
[Edit: corrected mAh comments]
When I got the kit I immediately installed the batteries, plugged in the 110V charger, and let it sit overnight. The next morning I unplugged it and turned it on, seeing 4 green bars. Unfortunately, this had dropped to 2 yellow bars within 20 minutes, so I start checking things out. That's when I notice that the battery was only rated at 1400mAh, which is on the small side, but still should be adequate. An average rated alkaline battery can have a much higher mAh rating, and high capacity batteries can have well over 2000mAh. So possibly the battery capacity bar is based on the highest capacity battery, so even when fully charged it's slightly over half of maximum.
This was disappointing, and worth a deduct of 2 stars (from the battery life rating), but I could deal with it. I always keep several spare AA batteries to feed my flashlight and headlamp, so I'd just throw a couple extra batteries in the pack if I needed more than extended outings.
About three days after getting the kit I go on an extended geocaching outing. A little less than 300 miles driving with about 8 miles walking/biking over 26 stops. Maybe 8 hours in-vehicle and 7 hours out. While driving, the receiver was always plugged into a 12V power point. I assumed the battery would last me all day; any amount discharged while walking SHOULD have been recharged while driving to the next destination. Wrong. About 1/2 through the trip, I got a low battery warning while walking (meaning it was down to 1 bar). About 3/4 through the trip, I got a critical battery warning while walking and the receiver shut off. I replaced with a pair of alkalines from my pack and kept walking. Back at the truck I kept it turned off and let it charge to the next stop. I had enough power to last for one geocache, then it shut off again. It turns out that just because it's plugged it, the receiver is running on external power, and the battery type is set to "rechargeable", that doesn't mean the batteries are actually getting charged. They aren't running down, but they aren't filling up either. I had to work a bit to make sure the status said "charging", usually requiring shutting the unit down and re-starting. This is a more serious problem. I would have deducted far more than 1 star from the "convenience" rating, but I feel this is more of a receiver problem than of a battery/charger problem.
Ultimately, though, this is a good purchase and worth the money. It's much cheaper than buying each item individually, and if you use it a lot, it's much cheaper than buying lots of alkalines to throw away.
Pros:
- allows the use of external power while driving, even if using alkaline batteries
- reduces waste having to throw away dead batteries
Cons:
- low capacity battery
- battery sometimes doesn't charge when the receiver is running and plugged into the 12V adapter

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The PN-Series Power Kit provides a complete Lithium-Ion rechargeable power solution for the Earthmate GPS PN-Series device

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