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Search took 0.20 seconds. Search: Posts Made By: jhebert
Forum: Electronics 09-10-2023, 08:18 AM
Replies: 5
Views: 2,079
Posted By jhebert
The time to reach full charge for a storage...

The time to reach full charge for a storage battery will depend on the capacity of the battery to store electrical energy, and the state of charge when the charging process begins. Another factor...
Forum: Electronics 09-10-2023, 07:40 AM
Replies: 5
Views: 1,979
Posted By jhebert
The typical GPS receiver used in recreational...

The typical GPS receiver used in recreational marine chart plotter devices does not actually measure speed from the GPS signals. The speed is deduced by comparing the present calculated position to a...
Forum: Electronics 08-07-2019, 07:54 AM
Replies: 1
Views: 842
Posted By jhebert
NMEA is a private organization. If you want to...

NMEA is a private organization. If you want to influence their standards, the first step is probably for you to formally become a member of the NMEA organization. Full Membership is rather expensive...
Forum: Electronics 04-29-2018, 05:39 AM
Replies: 6
Views: 6,467
Posted By jhebert
The Lowrance POINT-1 contains a GNSS receiver AND...

The Lowrance POINT-1 contains a GNSS receiver AND a magnetic heading sensor. This is the principal distinguishing feature of the POINT-1 compared to other products which are only GNSS receivers.

...
Forum: Electronics 01-19-2018, 09:41 AM
Replies: 10
Views: 2,784
Posted By jhebert
The only useful reading that can be made with a...

The only useful reading that can be made with a "multimeter" to deduce battery state-of-charge is the open terminal voltage.

The resting open terminal voltage of a lead-acid battery is...
Forum: Electronics 01-10-2018, 05:01 PM
Replies: 4
Views: 1,571
Posted By jhebert
http://continuouswave.com/whaler/reference/VHF_Mar...

http://continuouswave.com/whaler/reference/VHF_MarineBandChannels.html
Forum: Electronics 12-20-2017, 11:48 PM
Replies: 16
Views: 3,647
Posted By jhebert
Bob--you can test YOUR theory that radio waves...

Bob--you can test YOUR theory that radio waves deflect compasses. Just find the antenna and towers for a local broadcast TV station. They are probably transmitting at 500,000-Watts or more--maybe...
Forum: Electronics 12-20-2017, 11:04 AM
Replies: 16
Views: 3,647
Posted By jhebert
Bob--radio frequency transmissions on a boat are...

Bob--radio frequency transmissions on a boat are made at a frequency of about 150-million-cycles-per-second in which the magnetic wave alternates polarity. It is impossible for a compass to be...
Forum: Electronics 09-29-2017, 10:12 AM
Replies: 2
Views: 751
Posted By jhebert
I would not rank LOWRANCE as a premier...

I would not rank LOWRANCE as a premier manufacturer of communication radios. The "buddy" feature is just their branding of what is otherwise known as digital selective calling (DSC) position polling....
Forum: Electronics 09-05-2017, 10:09 PM
Replies: 5
Views: 843
Posted By jhebert
There are at least four ways to derive boat...

There are at least four ways to derive boat speed:

--from a GNSS receiver and its speed-over-ground, which is not measured directly but calculated based on time and distance between two positions;...
Forum: Electronics 09-02-2017, 10:45 AM
Replies: 6
Views: 1,257
Posted By jhebert
Chirp refers to the sound of a audible signal...

Chirp refers to the sound of a audible signal with upward frequency sweep, like a bird's chirp. If anyone tells you that chirp is an acronym for "Compressed High Intensity Radar Pulse" it is an...
Forum: Electronics 08-23-2017, 03:55 PM
Replies: 8
Views: 1,901
Posted By jhebert
It is extremely unlikely that having a network...

It is extremely unlikely that having a network backbone T-Connector in the wiring and having no drop cable attached to the DEVICE port will cause an electrical or communication problem for the...
Forum: Electronics 08-23-2017, 03:51 PM
Replies: 8
Views: 1,901
Posted By jhebert
Good process; repeat the test with a different...

Good process; repeat the test with a different interface cable. In the interim, remove the existing interface cable and check the conductors individually for continuity and for short circuit between...
Forum: Electronics 08-22-2017, 06:16 AM
Replies: 8
Views: 1,901
Posted By jhebert
To test the cause of the unusual behavior, repeat...

To test the cause of the unusual behavior, repeat the test but with the NMEA-2000 drop cable to the engine disconnected at the network backbone.
Forum: Electronics 08-09-2017, 12:43 PM
Replies: 12
Views: 1,628
Posted By jhebert
There is a lot of data available from a modern...

There is a lot of data available from a modern outboard engine. On my HDS I have set up THREE pages of engine data in various layouts and organization to display data from my 2010 Evinrude E-TEC...
Forum: Electronics 08-08-2017, 09:07 AM
Replies: 12
Views: 1,628
Posted By jhebert
Yes, mostly correct, with one exception: the...

Yes, mostly correct, with one exception: the Evinrude ICON Pro series gauges do not read data from a Lowrance FUEL DATA MANAGER data storage module; they track their own values. It will be available...
Forum: Electronics 08-07-2017, 05:28 PM
Replies: 12
Views: 1,628
Posted By jhebert
Wow--some bad information here. I cannot recall...

Wow--some bad information here. I cannot recall so much bad information in one thread.

First, an E-TEC engine DOES NOT try to power the NMEA-2000 network.

Second, as a result, you DO NOT NEED a...
Forum: Electronics 08-06-2017, 10:21 AM
Replies: 2
Views: 494
Posted By jhebert
If you want to test your 24-Volt SYSTEM, test...

If you want to test your 24-Volt SYSTEM, test with the batteries connected in series, as you use them.

If you want to test the two batteries in your system, test them individually.
Forum: Electronics 07-17-2017, 10:44 AM
Replies: 6
Views: 997
Posted By jhebert
Oh--I guess the OP was asking about electronic...

Oh--I guess the OP was asking about electronic chart cartography for use on his chart plotter. Nothing related to the GPS system. Gotcha. His mention of GPS and chips made me think he wanted advice...
Forum: Electronics 07-14-2017, 10:31 AM
Replies: 6
Views: 997
Posted By jhebert
Re "GPS chips": What Lowrance GPS receiver...

Re "GPS chips":

What Lowrance GPS receiver do you have now? Usually the internal receivers are quite accurate. They're mainly just L1 Coarse Acquisition with SBAS from the Wide Area Augmentation...
Forum: Electronics 06-28-2017, 06:19 PM
Replies: 2
Views: 504
Posted By jhebert
Most boaters install radios for the VHF Marine...

Most boaters install radios for the VHF Marine Band. The only UHF radios a boater might use would be radios for the General Mobile Radio Service (GMRS).



There really are no UHF marine-specific...
Forum: Electronics 06-23-2017, 05:34 AM
Replies: 7
Views: 1,210
Posted By jhebert
For a small boat, I have found a very effective...

For a small boat, I have found a very effective VHF Marine Band radio antenna to be a metal whip antenna mounted on a four-foot extension mast. I describe all the particulars in detail in an article...
Forum: Electronics 05-23-2017, 07:52 PM
Replies: 6
Views: 939
Posted By jhebert
EPE means Estimated Position Error. It is not...

EPE means Estimated Position Error. It is not particularly meaningful. It is a GNSS receiver's calculation of an ESTIMATE of the ERROR in its position solution. You should not interpret it as the...
Forum: Electronics 05-22-2017, 09:31 PM
Replies: 10
Views: 1,641
Posted By jhebert
I can't imagine there is any way to answer your...

I can't imagine there is any way to answer your question. There is nothing intrinsic in a battery charger that would cause its service life to be limited in any way. I remember my Dad used a battery...
Forum: Electronics 05-12-2017, 01:08 PM
Replies: 8
Views: 1,239
Posted By jhebert
The voltage is being read at different points in...

The voltage is being read at different points in the circuit.

Also: I hope you get your boat and trailer tipped back up to normal so you can get on the road and there was no damage having them...
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