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Old 28-12-2014, 08:02   #166
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Re: OpenCPN SIMRAD/LOWRANCE Radar Overlay PlugIn

The 32 bit Linux packages for 1.1 had the same problem with the files getting the wrong permissions. Suddenly it dawned on me why this was -- the Linux VM that I use to build the 64 bit packages is hosted by Parallels whereas the Linux VM that I use to build the 32 bit packages is hosted by VirtualBox. The file system drivers that these provide to map to the host file system is apparently different.

I have now rebuilt the 32 bit packages for Linux using a local file system with full UNIX semantics and have tested it and now it looks OK to me.
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Old 28-12-2014, 13:08   #167
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Re: OpenCPN SIMRAD/LOWRANCE Radar Overlay PlugIn

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Originally Posted by merrimac View Post
...I have now rebuilt the 32 bit packages for Linux using a local file system with full UNIX semantics and have tested it and now it looks OK to me.
Looks good to me too - thanks!
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Old 28-12-2014, 14:03   #168
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Re: OpenCPN SIMRAD/LOWRANCE Radar Overlay PlugIn

Hi...
Could you guys please post some decent looking screenshot of a recent version for the plugin download page of opencpn.org?

Many thanks

Pavel
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Old 28-12-2014, 19:41   #169
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Re: OpenCPN SIMRAD/LOWRANCE Radar Overlay PlugIn

I hope someone will create a Plugin Summary for this the Simrad/Lowrance Radar on this page http://opencpn.org/ocpn/plugins - Just register, login and pick "Child Page" at the bottom.
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Old 28-12-2014, 19:45   #170
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Re: OpenCPN SIMRAD/LOWRANCE Radar Overlay PlugIn

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Originally Posted by rgleason View Post
I hope someone will create a Plugin Summary for this the Simrad/Lowrance Radar on this page Plugins | Official OpenCPN Homepage - Just register, login and pick "Child Page" at the bottom.
It's listed as Navico which is the parent company of Simrad, Lowrance, B&G

See: Radar Overlay Pludins -> Navico BroadBand RADAR Plugin

Cheers,
JM.
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Old 29-12-2014, 07:28   #171
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Re: OpenCPN SIMRAD/LOWRANCE Radar Overlay PlugIn

Not only that, but if you keep clicking you get to the documentation wiki page, which is right up to date.

I'll check if I have decent enough pcap files so I can make a realistic screen shot.
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Old 29-12-2014, 20:53   #172
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Re: OpenCPN SIMRAD/LOWRANCE Radar Overlay PlugIn

Maybe you work Standalone mode without data compass, as it works on the traditional radar?

Need the ability to convert data COG > HDG not everyone can be a compass. It will work on the go and I know that will not work correctly if not true COG parked. Such as implemented in Garmin
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Old 31-12-2014, 10:17   #173
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Re: OpenCPN SIMRAD/LOWRANCE Radar Overlay PlugIn

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Originally Posted by nohal View Post
Hi...
Could you guys please post some decent looking screenshot of a recent version for the plugin download page of opencpn.org?

Many thanks

Pavel
Pavel..
I captured some screen shoots today. Not the best views since I'm winter moored but if not anything else is coming up these may do?
At least the first one has US text.

Håkan
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File Type: pdf BR24Radar_Print_out.pdf (472.8 KB, 85 views)
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Old 31-12-2014, 10:24   #174
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Re: OpenCPN SIMRAD/LOWRANCE Radar Overlay PlugIn

Hakan...
It will do for sure, many thanks.

Pavel
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Old 31-12-2014, 10:40   #175
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Re: OpenCPN SIMRAD/LOWRANCE Radar Overlay PlugIn

Good.
Here it's now four hours left to New Year so I've to chill the Champagne.

Happy New Year to you and all others and thanks for a wonderful OCPN and BR24 year.

Håkan
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Old 12-01-2015, 07:49   #176
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Re: OpenCPN SIMRAD/LOWRANCE Radar Overlay PlugIn

I was surprised to find that there is no timed transmit mode.

Then I looked at documentation for Lowrance HDS, Simrad NSE, and B&G Zeus; None of them have this feature either. I wonder why this is not implemented ? Is there some limitation in the hardware? Would repeatedly starting/stopping the scanner cause some wear or damage ?

I did not do my homework when I bought this scanner, should have seen this. I had hoped to run in timed transmit mode with a guard zone while sailing in order to reduce power consumption while maintaining a RADAR watch.

From a quick look at the Garmin radar plugin code it seems that timed transmit is implemented in the Garmin RADAR unit. I wonder if it could be implemented in the plugin for Navico ?

Cheers,
JM.
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Old 12-01-2015, 13:01   #177
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Re: OpenCPN SIMRAD/LOWRANCE Radar Overlay PlugIn

I guess there isn't as much of a point in reducing power consumption from 17W to 3W (Broadband) as in reducing it from 55W to 3W (Magnetron).

You're the first to ask. Personally, I don't think I would use it much.

I'm not sure I would be happy to subject the radar to all those stop/starts. In terms of electronics it probably doesn't matter but the motor might wear out more quickly. Also, we'd have to go through a complete test cycle to determine how quickly the data is reliable after a start.
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Old 12-01-2015, 13:20   #178
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Re: OpenCPN SIMRAD/LOWRANCE Radar Overlay PlugIn

I think another reason you might want to use intermittent pulses with a cavity magnetron (CM) is the limited lifetime of the CM which I think is usually not much more than 500 hrs or so. It would also reduce thermal load, although you probably want to make sure you send out a pulse before it cools to much, and you may even need continued heating of the CM so at some point it doesn't actually save any power. So the CM radar would probably still use 10-15W whilst not transmitting? Just guessing here, maybe someone has some measurements?

Anyway, since Navico doesn't offer this I don't feel comfortable adding this to the plugin for fear of operating the scanner outside of its design parameters. Sorry.
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Old 30-01-2015, 03:17   #179
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Re: OpenCPN SIMRAD/LOWRANCE Radar Overlay PlugIn

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Originally Posted by merrimac View Post
since Navico doesn't offer this I don't feel comfortable adding this to the plugin for fear of operating the scanner outside of its design parameters. Sorry.
I think timed transmit with sufficiently low duty cycle say 5-10s TX every 2-5mins would not cause any harm to transmitter or antenna mechanics. It might even reduce the wear on antenna and motor bearings a little.

So I think this might be benefical feature to have. Of course you can always add a disclaimer: "feature not supported by manufacturer, use at own risk".
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Old 31-01-2015, 21:08   #180
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Re: OpenCPN SIMRAD/LOWRANCE Radar Overlay PlugIn

So here's my question:

As I understand it, the 3G radar puts out a formatted radar frame with the data needed to scale it, etc. OpenCpn supplies the GPS data to locate the frame and assembles, scales, etc the radar frame and displays it on the screen.

So why can't the same be done for the Structure Scan data? It also comes in via an ethernet cable. If so where would one gete the format of the Structure Scan frame?

Boris
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