Spurious ARPA Targets DRS25A-NXT

[Johnny Electron]

Receive side can be damaged by RF. It is like having someone scream in your ear and then saying that you still have your ears ringing when they quit screaming. Disregard as you wish but you can't change physics and when guidelines are broken sometimes there is a price to be paid.

 

[Bayhouse]

Receive side can be damaged by RF. It is like having someone scream in your ear and then saying that you still have your ears ringing when they quit screaming. Disregard as you wish but you can't change physics and when guidelines are broken sometimes there is a price to be paid.

Understandable when the starlink was active, but when it's completely powered down?? Quitsa has the problem with no Starlink.

DISREGARD - Didn't have the ARPA overlay turned on -- Very strange this morning, going past my 3rd set of hard targets (one sea buoy and 2 groups of fishing boats), none have auto acquired (all were inside of 2nm). I did have some clutter out of eyesight that were Acquired - could have been real.

 

[Sparky Wire]

If worried about software the radar, it can be downgraded a version or two to test that theory. Not every boat is the same. Because there is a similar issue doesn't mean the answer is the same for each case. If it is something with the new software the parent company will sort it. If it is something on the boat, then that must be addressed on its own merits. I will say when it comes to RF the longer an issue happens the more damage that can occur. I see GPS antennas in the radar beam have the receive side damaged to the point they don't pick up at all. They end up replacing them every three years until someone finally moves it out of the beam. Placement is a valid possibility for anyone pressing the envelope.

 

[Saltybrad]

On the boat now, never turned on starlink, the unit is a brand new remaned pumpkin. The false targets build and build. First pic is without target analyzer. Second pic is with.

 

[Bayhouse]

If worried about software the radar, it can be downgraded a version or two to test that theory. Not every boat is the same. Because there is a similar issue doesn't mean the answer is the same for each case. If it is something with the new software the parent company will sort it. If it is something on the boat, then that must be addressed on its own merits. I will say when it comes to RF the longer an issue happens the more damage that can occur. I see GPS antennas in the radar beam have the receive side damaged to the point they don't pick up at all. They end up replacing them every three years until someone finally moves it out of the beam. Placement is a valid possibility for anyone pressing the envelope.

3 different boats, different installations but same radar and MFD model - only other thing common is the behavior of the radar and phantom targets.

Not a statistically significant sample size admittedly.

Today, when I turned on the ARPA overlay I've probably only had 3 phantoms in the last 90 minutes and they all went away on their own.

 

[Bayhouse]

These are all valid targets and has been working almost perfect for the last several hours.

 

[Quitsa]

Yes. I have never been able to correlate it except for offshore on a very calm day with nothing nearby. Then the only spurious targets are from the wake. But that doesn’t happen consistently and sometimes I get the extra targets under the same conditions.

 

[Quitsa]

Receive side can be damaged by RF. It is like having someone scream in your ear and then saying that you still have your ears ringing when they quit screaming. Disregard as you wish but you can't change physics and when guidelines are broken sometimes there is a price to be paid.

I had the issue long before I got the Starlink. In any case, mine is at least 8 feet away below and out of the beam.

 

[Saltybrad]

A possible consideration might be to have an option to keep Arpa active with out auto tageting, you would manually select targets to aquire.