Caldwell Velociradar Chronograph

[Rocketvapor]

The Amazon replacement for the Gamin is a flat Li-Po.
The others use two 18650, one is a heatshrink pair.

I don't see replacing them (out of warranty of course) a few years down the road much of a negative.
The newer USB-C connector will last longer than the connector on the original LR.

I have read (internet) that some "smart" power banks aren't smart enough to NOT put out 9 volts with a 5 volt device attached. Most have an output display of Amps and Volts. Mine seem to do OK with the Garmin.

 

[jthor]

I'd argue that tiny form factor doppler chronos like the Garmin Xero, AndiScan, and LabRadar LX are every bit as much a game changer as was doppler technology itself. And so I see pie-plate sized units like Caldwell's new entry as being dead out of the gate.

There's an even more important factor, though. I'm convinced that the primary reason for the stunning reliability of the Garmin Xero is because of its triggering mechanism: it does not depend upon an acoustic waveform coming off the weapon, but simply picks up any projectile within its velocity range that enters its radar beam.

That solves all sorts of in-field problems.

The Garmin has that newer, direct-signaling trigger. And so does the new AndiScan A3.

The LabRadar LX appears to have the old-style acoustic trigger. And I'd guess Caldwell's new unit probably does as well.

I'm unable to see any real advantage in the 60 GHz frequency band used by the LabRadar LX compared to the 24 GHz band used by pretty much all the others. There are some theoretical benefits (and disadvantages) to both bands, but in the typical civilian shooter scenario where these devices would be used, I'd call it a wash.

Signal frequency and Antenna size have an inverse relationship, higher the frequency the smaller your antenna can be.

Hypothetically if you had one Garmin C1 that used 24 GHz and one that used 60 GHz the 60 GHz would have more natural gain than the 24 GHz, DBi. Thats natural gain on TX and RX.

You could track a bullet further with 60 GHz than 24 without changing antenna size or increasing power to the TX side of the antenna.

That being said 60 GHz takes more energy to produce and unless you change properties of the antenna design it will lend itself harder to initially pick up bullets due to the smaller beam width. Or if it was phased array you change the programming of the beam forming, but these all look like patch antennas.

Just some of my knowledge working a lot of SATCOM RF and a bit of radar experience. Radars unfortunately deal with the inverse square law twice.

 

[Silver_Is_Money]

Can anyone confirm if the Velociradar will measure velocities for shotshells in the class of trap and skeet loads?

 

[F Class John]

Also, you can't use it when charging or connected to a USB power block.

This was a misprint in their manual. I pointed it out to them and they're supposed to be correcting it.

 

[Silver_Is_Money]

Are there any updates regarding the Velociradar and Trap/Skeet type shotshell velocity readings yet?