Really? I prefer the 30, personally, as it mounts beautifully on a vertical sled, and fits in a 3" tube with no modification. You can even squeeze it in a 54.

An update--I ordered and paid for 3 units on June 2, they were delivered today, so this ebay vendor seems OK.

My DC-30's fit easily "unopened" into a 54mm Coupler. They easily fit into a 3 inch NC.

Also, if they need repair, I can slip them back into the dog collar for factory warranty...

They're a bit pricier, but how many will I ever need? (Actually, this may be a dumb question to pose...)

My DC-30's fit easily "unopened" into a 54mm Coupler. They easily fit into a 3 inch NC.

Also, if they need repair, I can slip them back into the dog collar for factory warranty...

They're a bit pricier, but how many will I ever need? (Actually, this may be a dumb question to pose...)

IT IS !! 😉

Got a notice today that Garmin is introducing a new dog collar unit, the DC-40. It appears that this unit eliminates the GPS unit on top of the dog's neck, and has everything in one unit that sits at the dog's throat. Has a pretty long antenna, but this looks like an improvement to the DC-30 for rocketry use. Which is what I am sure Garmin was trying to achieve. Haven't see a price on it yet, it is in pre-order status.

Now if only they would provide altitude (elevation) as part of their realtime telemetry... and use a chipset other than SirFIII

W

they will dump the DC-30's at a reduced price.

I could go for $100 DC-30's. Mine seem to work flawlessly.

Yeah, the altitude would be really nice info to have. It would be very interesting to watch the descent rate.

Can anyone post a picture of a DC 30 or DC 40? I have a DC 20 but I'm not excited about modifying the antenna mount and it just takes up too dang much space in the stock configuration. It appears from the pictures I can find that the antenna config in the DC 30/40 is much more rocket friendly. Thanks.

I guess I should also ask if anyone has a fool proof way of redirecting the antenna on a DC20 by 90 degrees.

I got 90 degree SMA connectors at JB Saunders in Boulder - I think they were $1.50 or something like that.