PLRF25cX2 w/Kestrel Review

918v

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Minuteman
Jul 15, 2007
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I got my new Plrf yesterday. It is very nice. I ranged a hill 7800m away last night, off hand. That's 2600m farther than my 15c can do.

Today I mapped the beam using a tripod and aiming at power lines. It looks like a vertical beam 2x1mrad.

I also paired it with my Kestrel. Once paired and locked, you can turn the Kestrel off and then turn it back on when needed without additional fumbling.

The Plrf transmits the equivalent horizontal range and your shot direction to the Kestrel which gives you the firing solution compensating for wind. The speed of the "transaction" between the Plrf and Kestrel is instant, or not:

For example, you can set the time of the BT connection from 15s to 15m. If the former, the Plrf remains asleep until you take a measurement. It then establishes a connection with Kestrel and sends the data which takes about 15s from the time you push the button. Then it disconnects after 15s of inactivity and goes to sleep until you take another measurement. If, on the other hand, you set the BT connection for a longer period, then the rate of transmission is instant during the connection period.

I identified one issue, however: if the Plrf sends a distance reading outside 20-3800m, the Kestrel will throw an error message and terminate the BT connection. The Plrf will then attempt to reconnect, but it won't be able to. It will stop trying after 30-40 seconds and go to sleep. Once that occurs, taking another measurement will cause the Plrf to reestablish the BT connection which takes 15s. So basically if you range outside the 20-3800m window, your BT connection will go down for about a minute while everything resets. I don't like that, so I emailed AB hoping they can fix the issue in their next software upgrade.

Is this setup worth $10k? Nope. But it sure is beautiful. The 25c with Kestrel weighs the same as a 15c by itself. The 25c is more ergonomic and easier to operate. The glass in the 25c is better. The 25c ranges farther. The 25c has a more useful beam orientation: it is vertical. The 15c has a diagonal beam sloping downward from left to right. The BT is very convenient. The thought of cables in the wilderness just doesn't appeal to me.

 
Sounds like a heck of a machines, but your right it should throw up solutions in one second or less regardless of the range and It should be able to re-range another without having to wait at all, and it should do it instantly.

John.
 
I got my new Plrf yesterday. It is very nice. I ranged a hill 7800m away last night, off hand. That's 2600m farther than my 15c can do.

Today I mapped the beam using a tripod and aiming at power lines. It looks like a vertical beam 2x1mrad.

I also paired it with my Kestrel. Once paired and locked, you can turn the Kestrel off and then turn it back on when needed without additional fumbling.

The Plrf transmits the equivalent horizontal range and your shot direction to the Kestrel which gives you the firing solution compensating for wind. The speed of the "transaction" between the Plrf and Kestrel is instant, or not:

For example, you can set the time of the BT connection from 15s to 15m. If the former, the Plrf remains asleep until you take a measurement. It then establishes a connection with Kestrel and sends the data which takes about 15s from the time you push the button. Then it disconnects after 15s of inactivity and goes to sleep until you take another measurement. If, on the other hand, you set the BT connection for a longer period, then the rate of transmission is instant during the connection period.

I identified one issue, however: if the Plrf sends a distance reading outside 20-3800m, the Kestrel will throw an error message and terminate the BT connection. The Plrf will then attempt to reconnect, but it won't be able to. It will stop trying after 30-40 seconds and go to sleep. Once that occurs, taking another measurement will cause the Plrf to reestablish the BT connection which takes 15s. So basically if you range outside the 20-3800m window, your BT connection will go down for about a minute while everything resets. I don't like that, so I emailed AB hoping they can fix the issue in their next software upgrade.

Is this setup worth $10k? Nope. But it sure is beautiful. The 25c with Kestrel weighs the same as a 15c by itself. The 25c is more ergonomic and easier to operate. The glass in the 25c is better. The 25c ranges farther. The 25c has a more useful beam orientation: it is vertical. The 15c has a diagonal beam sloping downward from left to right. The BT is very convenient. The thought of cables in the wilderness just doesn't appeal to me.

What happens if you manually input a range between 2-38? I ask because it slikely a hardware issue which isn't anything to do with AB, you need to call NK for support.
 
Picked up the new 25C a month or so ago and pair with it FFS running on a Nomad. Works flawlessly. Was able to easily range targets past 2K on a bright hot day when other LRF were not able to do so. Great unit.
 
Didn't think of that. So just tried to manually adjust it and the AB software won't let the distance go below 18 or higher than 3658.

18m or 1800? Is the Kestrel an Elite or the sportsman? one thing I just thought of was maybe make sure DSF is enabled. trying to get a hold pat transonic may not be possible without this enabled.

DocUSMCRetired , any input on this? is there a max range in AB? I looked online, in the kestrel user manual and AB mobile user guide and it says nothing.
 
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Sounds like a heck of a machines, but your right it should throw up solutions in one second or less regardless of the range and It should be able to re-range another without having to wait at all, and it should do it instantly.

John.

Well, it does as long as the BT connection is maintained. The reason for the cutoff is to preserve battery life. As long as you have a BT connection and you're inside that range window, the returns are instant. If you're outside the window or lose BT the Plrf will range but the Kestrel won't compute the data.
 
The trouble with owning a long range LRF is the App will only support certain bullets out to a certain range and I found that this is quite a common issue, the ConX App works off of a certain amount of drop which normally ends up a couple of hundred yards North or South of the subsonic range.

John.
 
I don't mind the 18-3658 window. I mind the BT shutting down.

Will I know for a fact that if you used the BT a lot these LRFs will eat batteries, So if you take it out to play with it don't let it connect to your other gizmo's.

With the ConX it shuts down after 20 secs but if you hit the range button they pair up with say about 3 seconds and if you shut the BT off on my Phone etc the ConX won't turn on it's BT which saves the battery, The BT is a wonderful thing when needed but it's not a good thing to have it connected when your just playing about with it,

I messed with mine for hours testing it out and the battery was still saying full, But once the BT is hooked up then the Gloves are off,lol.

John
 
Will I know for a fact that if you used the BT a lot these LRFs will eat batteries, So if you take it out to play with it don't let it connect to your other gizmo's.

With the ConX it shuts down after 20 secs but if you hit the range button they pair up with say about 3 seconds and if you shut the BT off on my Phone etc the ConX won't turn on it's BT which saves the battery, The BT is a wonderful thing when needed but it's not a good thing to have it connected when your just playing about with it,

I messed with mine for hours testing it out and the battery was still saying full, But once the BT is hooked up then the Gloves are off,lol.

John

The Bt LTE technology doesn't drain as fast as some other protocols, especially if using Lithium ion batteries. Ranging uses more battery than An idle BT connection.
 
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The Bt LTE technology doesn't drain as fast as some other protocols, especially if using Lithium ion batteries. Ranging uses more battery than An idle BT connection.

My LRF eats the battery about 3 or 4X faster than it does with the BT switched off, It said the battery was full and within a few hours it was down to 2 or 1 block, So when I use it now I just make sure that If I am using the Custom profiles and it is loaded in to the ConX, I just turn the BT off on the phone and then it's not a problem,

John.