"Larry W4CSC" wrote in message
...
There's a source of information, guys. Meindert, what are the FCC
radiation requirements for this boat electronics? Are these items
required to pass FCC's consumer radiation requirements? Is Norland
violating the law?

My contention is marine electronics isn't covered, otherwise we'd have
a data system that's shielded, not the stupid NMEA-0183 with
unshielded connections screwed down helter-skelter balanced and
unbalanced any old way you builders want to do it with wires hanging
out, radiating like hell. Is this the TRUTH?

According to FCC Part 15, a class B digital device is:
---QQQ---
A digital device that is marketed for use in a residential environment
notwithstanding use in commercial, business and industrial environments.
Examples of such devices include, but are not limited to, personal
computers, calculators, and similar electronic devices that are marketed for
use by the general public. Note: The responsible party may also qualify a
device intended to be marketed in a commercial, business or industrial
environment as a Class B device, and in fact is encouraged to do so,
provided the device complies with the technical specifications for a Class B
digital device. In the event that a particular type of device has been found
to repeatedly cause harmful
interference to radio communications, the Commission may classify such a
digital device as a Class B
digital device, regardless of its intended use.
---UQUQ---

Navigation electronics fall in the category of "digital devices marketed for
use by the general public". For professional use, there are even more
stringent standards (IEC945).

And it is my understanding that FCC approval or compliance is mandatory.
When I export to the US and ship with Fedex, they ant me to fill out a form,
stating that the my multiplexers comply with FCC Part 15 class B. Otherwise
they (Fedex, being the importer) can be held liable.
So you might think Noland is violating the law here. They are for sure with
the units they export to Europe, because they have no CE marking.

The limits for radiated emmission for class B devices a
30 - 88MHz: 100uV/m
88 - 216MHz: 150uV/m
216 - 960MHz: 200uV/m
Above 960MHz: 500uV/m
All measured at 3 meters distance.

Meindert

On Fri, 30 Jan 2004 15:30:30 +0100, "Meindert Sprang"
wrote:


The limits for radiated emmission for class B devices a
30 - 88MHz: 100uV/m
88 - 216MHz: 150uV/m
216 - 960MHz: 200uV/m
Above 960MHz: 500uV/m
All measured at 3 meters distance.

Meindert

Thanks, but the keywords I see are RESIDENTIAL. They are
"encouraged", but not "required" to do so in an industrial
environment, same as computers. Also of interest if the 30 Mhz lower
limit in the above table. It doesn't say 0-88 Mhz. The most
important 30 Mhz is missing....for the HF SSB radios.



Larry W4CSC

No, no, Scotty! I said, "Beam me a wrench.", not a WENCH!
Kirk Out.....

"Larry W4CSC" wrote in message
...
On Fri, 30 Jan 2004 15:30:30 +0100, "Meindert Sprang"
wrote:

Thanks, but the keywords I see are RESIDENTIAL. They are
"encouraged", but not "required" to do so in an industrial
environment, same as computers.

What is meant here is that for industrial environment, Class A is
sufficient, (which accepts a higher level of interference), bu they
arecouraged to qualify for Class B.

Also of interest if the 30 Mhz lower
limit in the above table. It doesn't say 0-88 Mhz. The most
important 30 Mhz is missing....for the HF SSB radios.

The figures I qouted were for radiated emission, which is hardly present on
lower frequencies. Below 30MHz, conducted emission is more the problem. This
is emission through connected wires and is measured with a current probe
setup.

Meindert

"Meindert Sprang" wrote in message
...
"Larry W4CSC" wrote in message
...
On Fri, 30 Jan 2004 15:30:30 +0100, "Meindert Sprang"
wrote:

Thanks, but the keywords I see are RESIDENTIAL. They are
"encouraged", but not "required" to do so in an industrial
environment, same as computers.

In section 15.103 sub (a) it says that devices operating exclusively in any
transportation vehicle (including motor vehicles and aircraft) are exempted.
Now according to my dictionary, a vehicle usually has wheel and mover over
land. What about boats?

Meindert

On Sat, 31 Jan 2004 00:29:48 +0100, "Meindert Sprang"
wrote:

"Meindert Sprang" wrote in message
...
"Larry W4CSC" wrote in message
...
On Fri, 30 Jan 2004 15:30:30 +0100, "Meindert Sprang"
wrote:

Thanks, but the keywords I see are RESIDENTIAL. They are
"encouraged", but not "required" to do so in an industrial
environment, same as computers.

In section 15.103 sub (a) it says that devices operating exclusively in any
transportation vehicle (including motor vehicles and aircraft) are exempted.
Now according to my dictionary, a vehicle usually has wheel and mover over
land. What about boats?

Meindert


A boat is a transportation vehicle, so is exempt and manufacturers can
go all to hell screwing up the Icom with radiating chargers, NMEA
gadgets, computer displays and use cheap screw terminals on
un-shielded, unbalanced feed lines to turn the whole damned boat into
a giant broadband transmitter.

(See my comment about Bluetooth.....last message)


Larry W4CSC

No, no, Scotty! I said, "Beam me a wrench.", not a WENCH!
Kirk Out.....

On Sat, 31 Jan 2004 00:29:48 +0100, "Meindert Sprang"
wrote:

"Meindert Sprang" wrote in message
...
"Larry W4CSC" wrote in message
...
On Fri, 30 Jan 2004 15:30:30 +0100, "Meindert Sprang"
wrote:

Thanks, but the keywords I see are RESIDENTIAL. They are
"encouraged", but not "required" to do so in an industrial
environment, same as computers.

In section 15.103 sub (a) it says that devices operating exclusively in any
transportation vehicle (including motor vehicles and aircraft) are exempted.
Now according to my dictionary, a vehicle usually has wheel and mover over
land. What about boats?

Meindert


A boat is a transportation vehicle, so is exempt and manufacturers can
go all to hell screwing up the Icom with radiating chargers, NMEA
gadgets, computer displays and use cheap screw terminals on
un-shielded, unbalanced feed lines to turn the whole damned boat into
a giant broadband transmitter.

(See my comment about Bluetooth.....last message)


Larry W4CSC

No, no, Scotty! I said, "Beam me a wrench.", not a WENCH!
Kirk Out.....

"Meindert Sprang" wrote in message
...
"Meindert Sprang" wrote in message
...
"Larry W4CSC" wrote in message
...
On Fri, 30 Jan 2004 15:30:30 +0100, "Meindert Sprang"
wrote:

Thanks, but the keywords I see are RESIDENTIAL. They are
"encouraged", but not "required" to do so in an industrial
environment, same as computers.

In section 15.103 sub (a) it says that devices operating exclusively in
any
transportation vehicle (including motor vehicles and aircraft) are
exempted.
Now according to my dictionary, a vehicle usually has wheel and mover over
land. What about boats?

Meindert



Meindert has beaten me to the quote, citing the correct subsection which
exempts electronics used in ANY US vehicle. This is simply an exclusion
granted by the FCC, other groups and agencies may have regulatory compliance
requirements for vehicles under their control or authority. For instance,
the FAA will not allow any random electronics installation in an aircraft.
Auto manufacturers place stringent compliance requirements on their vendors,
but after the sale, the manufacturer has no control over the vehicle
(although theoretically, some electronic aftermarket additions might void
the manufacturer's warranty).

In Europe, the automakers have pulled a sneaky exclusion, for automotive
products from the EMC Directive, that will last about 10 more years. They
have a parallel, but not harmonized compliance structure, and thus an EN
marking and a Declaration of Conformity for goods going into European autos
is not required. (No Directive, so nothing to conform to, so no way to
declare conformity!)

I can't recall what they formally call the automotive system; maybe it is
the Automotive Directive. Naah, too simple!

Ed

"Meindert Sprang" wrote in message
...
"Meindert Sprang" wrote in message
...
"Larry W4CSC" wrote in message
...
On Fri, 30 Jan 2004 15:30:30 +0100, "Meindert Sprang"
wrote:

Thanks, but the keywords I see are RESIDENTIAL. They are
"encouraged", but not "required" to do so in an industrial
environment, same as computers.

In section 15.103 sub (a) it says that devices operating exclusively in
any
transportation vehicle (including motor vehicles and aircraft) are
exempted.
Now according to my dictionary, a vehicle usually has wheel and mover over
land. What about boats?

Meindert



Meindert has beaten me to the quote, citing the correct subsection which
exempts electronics used in ANY US vehicle. This is simply an exclusion
granted by the FCC, other groups and agencies may have regulatory compliance
requirements for vehicles under their control or authority. For instance,
the FAA will not allow any random electronics installation in an aircraft.
Auto manufacturers place stringent compliance requirements on their vendors,
but after the sale, the manufacturer has no control over the vehicle
(although theoretically, some electronic aftermarket additions might void
the manufacturer's warranty).

In Europe, the automakers have pulled a sneaky exclusion, for automotive
products from the EMC Directive, that will last about 10 more years. They
have a parallel, but not harmonized compliance structure, and thus an EN
marking and a Declaration of Conformity for goods going into European autos
is not required. (No Directive, so nothing to conform to, so no way to
declare conformity!)

I can't recall what they formally call the automotive system; maybe it is
the Automotive Directive. Naah, too simple!

Ed

"Meindert Sprang" wrote in message
...
"Larry W4CSC" wrote in message
...
On Fri, 30 Jan 2004 15:30:30 +0100, "Meindert Sprang"
wrote:

Thanks, but the keywords I see are RESIDENTIAL. They are
"encouraged", but not "required" to do so in an industrial
environment, same as computers.

In section 15.103 sub (a) it says that devices operating exclusively in any
transportation vehicle (including motor vehicles and aircraft) are exempted.
Now according to my dictionary, a vehicle usually has wheel and mover over
land. What about boats?

Meindert

On Sat, 31 Jan 2004 00:20:05 +0100, "Meindert Sprang"
wrote:


The figures I qouted were for radiated emission, which is hardly present on
lower frequencies. Below 30MHz, conducted emission is more the problem. This
is emission through connected wires and is measured with a current probe
setup.

Meindert

The radiation from the unshielded wires, with many of them sucking
noise from inside the shielded pair because you must hook one side
(NMEA B) to many grounds creating a giant HF antenna out of your
carefully shielded cabling, is the problem on the HF receivers......

Let's just dump all this NMEA crap from 1970 and build Bluetooth
compatibility into every new marine electronic gadget. No need for
multiplexers for ancient technology mistakes, wires radiating crap to
all the radios, wires picking up the 150 watt SSB transmitter and
trashing all the NMEA crap it's hooked to.

I was for USB until I got looking at Bluetooth......

http://www.bluetooth.com/news/index....PID=1130&ARC=1

"NAVMAN GPS 4460 LEADS THE WAY FOR PALM OS 5 USERS

Navigation Leader Unveils New palmOne Handheld Compatible Bluetooth
GPS Device

Foothill Ranch, Calif. – Navman, a leading designer and manufacturer
of world-class global positioning systems (GPS), communication and
marine products, announced today the latest addition to its innovative
line of GPS products for the consumer electronics market. The Navman
4460 is a voice-enabled, Bluetooth™ GPS receiver designed for Palm®OS
5-based handhelds (e.g. select devices from PalmOne, Inc. and Sony).
The device is powered by the latest version of Navman’s award winning
SmartST™ Professional navigation software and offers consumers the
most comprehensive self-contained guidance solution on the market. The
GPS 4460 is being unveiled at the 2004 International Consumer
Electronics Show.

SmartST Version II provides detailed street-level mapping for all of
North America, including Hawaii and Canada. The software is fully
automatic and provides voice (male or female) guidance, in addition to
visual driving instructions. Features include address-to-address
routing, Back-on-track? rerouting when off-course and an extensive
points-of-interest (POI) library. The POI database contains: retail
shops, entertainment venues, local amenities, restaurants, bars,
buildings and monuments, hotels, public transportation, gas stations,
garages, sports facilities, institutions, medical services and natural
attractions, allowing users to plan routes more easily and
effectively. SmartST options provide the ability to find the shortest
or quickest route to any destination, set locations as favorites,
select from a list of recent address entries, and hear spoken
instructions in one of seven languages. Large display icons and
easy-to-read maps provide an operator-friendly interface for added
safety while driving. SmartST is also optimized for palmOne’s new
Tungsten™ T3 handheld, allowing users to take advantage of the
device’s full 320x480 screen in both portrait and landscape modes.

The 4460 device employs a high-performance GPS receiver combined with
an embedded, Class 2 Bluetooth transceiver, which facilitates the
wireless communication of accurate satellite navigation information to
the handheld device. Once the SmartST software is installed onto the
user’s computer, it can be downloaded to the PDA via synchronization,
and map, voice and POI data is stored on an SD Card. A blinking LED
displays connectivity status and low battery indication. The complete
GPS 4460 solution includes a wireless GPS antenna, SmartST
Professional navigation software, a vehicle power adapter, vehicle
mounting brackets, and both an armband and lanyard for outdoor
personal use. The unit operates for 30 hours on 3 AAA Alkaline
batteries (included)."

Isn't it time to DUMP NMEA-XXXX and move all boat instruments on to
wireless technology?

Yes, it is.....



Larry W4CSC

No, no, Scotty! I said, "Beam me a wrench.", not a WENCH!
Kirk Out.....