Narrowband Sonar Target Designation

[Bill Dickson]

I can designate targets in broadband, but when I switch to narrowband I cant designate the targets, this hapens both in SC and DW.

is it because of the range 0f the contact and not a strong enough signal.

Thanks for your help.

[Sonoboy]

Usually it is the other way around: being able to mark contacts in NB and not in BB.

Assuming you meant the above, it is probably due to not strong enough of a signal.

[sonar732]

How "bright" are your classification lines? I agree that it sounds like your issue is with BB detection rather than NB. Something else that will help us out is what platform you're talking about.

[Bill Dickson]

I am Driving the Seawolf or 688I.

The classification lines are faint but the spikes in the towed array NB window are very pronounced but when I try to designate it dosn't.

one other strange thing, well to me, is that although I cant designate in NB the sonar contacts appear with their seirra Nos in the demon display.

[timmyg00]

Are you trying to mark the NB "spike" instead of individual frequency lines?

The latter is how it has to be done.

TG

[LuftWolf]

Put the bearing cursor on the spike. Then click on a frequency line, THEN hit Mark.

In the narrowband, you are marking an individual frequency along a particular bearing rather than the whole contact.