Emtrak B100 replaced by B900 ?

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Anyone looked into this? It may be too early to ask - first deliveries promised 20 Feb 2020!

I am just getting round to buying the kit to replace my current AIS and Chartplotter. Drawing up the new interconnect diagram and checking features, I noticed that the B100 on my kit list is no longer featured on the Emtrak website. It appears to have been replaced by the B900 series. Before I check out the manual in detail to satisfy myself that none of the features I need have been dropped, has anyone else investigated?
Cheers
Bob
P.S. Thanks to prv for his earlier programming post - saved me buying an unnecessary box.
 
They have added an integrated Gps antenna which makes installation easier (like my Vesper 6000). The 920 range is low power (edited-2w) and within this the 921 is most equivalent to standalone B100, while the 923 adds an internal splitter. Also on website are wifi/Bluetooth models and a 950 range for newer highpower (5w) standard.
 
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I had a look at the various offerings in the new 900 series. It seems it is available in two versions 2w none priority and 5w priority tx (Same as class a)

In addition you have the option of with or without blue tooth and wifi comms.

Also available with or without a built in vhf splitter.

base price £390 most expensive £780.

It comes with it's own gps antenna.

I would opt for the 5w sodtma version especially if in a high density a class area.

Having all the bells and whistles will make it future proof, easy connection to any dedicated hard wired multi nmea standard products or remote phone or PC based nav system.
Nice pice of kit until the cheaper chinese clones are made available.
 
TSB240 said:
I had a look at the various offerings in the new 900 series. It seems it is available in two versions 2w none priority and 5w priority tx (Same as class a)

In addition you have the option of with or without blue tooth and wifi comms.

Also available with or without a built in vhf splitter.

base price £390 most expensive £780.

It comes with it's own gps antenna.

I would opt for the 5w sodtma version especially if in a high density a class area.

Having all the bells and whistles will make it future proof, easy connection to any dedicated hard wired multi nmea standard products or remote phone or PC based nav system.
Nice pice of kit until the cheaper chinese clones are made available.
Click to expand...

It does seem like an unnecessary plethora of models, a nightmare for retailers? Perhaps they will rationalise when they see what the market is like. Going by the presently listed prices, the built in splitter models seem reasonable value but the extra for built in WiFi/Bluetooth seems very high given how cheap and simple to add the hardware is today. I added WiFi out for my AIS using a £45 unit.
 
UK-WOOZY said:
are those available for nmea 2000?
Click to expand...

No, but...

If the B900's work similar to the Vesper units like I have, then the NMEA2000 bus can be connected to the AIS unit, and the PGNs are converted and multiplexed onto the NMEA0183 output. This then can feed the WiFi unit. It would need checking in the B900 manuals though.

I have not got that far yet, but am about to interface to my network - in my case its a SeatalkNG, but same principle.
 
New models are offered as 2W or 5W output versions. What output power was the B100?

In addition to the 900 series there is also the B300. Is that the B100 direct replacement?
 
Norman_E said:
New models are offered as 2W or 5W output versions. What output power was the B100?

In addition to the 900 series there is also the B300. Is that the B100 direct replacement?
Click to expand...

Quick answer because I am not expert. Original legal spec for AIS class B transponder was max 2W, now changed to allow up to 5W . B100 was 2W.

The B300 series has been available for time. I would guess that this is also to be replaced by 900 series. The B921 looks like a replacement for both B100 & B300. But this is all conjecture by me.
 
The 5w versions operate on sotdma tx principle . This gives them them priority for tx of ais position data over cheaper class b ais that use cstdma tx protocol. This is the same ability as class A. In high class A density areas older class b transmissios can be delayed by as much as 30 seconds.as priority is given under the sotdma principle of AIS tx.

SOTDMA vs CSDTMA
 
TSB240 said:
The 5w versions operate on sotdma tx principle . This gives them them priority for tx of ais position data over cheaper class b ais that use cstdma tx protocol. This is the same ability as class A. In high class A density areas older class b transmissios can be delayed by as much as 30 seconds.as priority is given under the sotdma principle of AIS tx.

SOTDMA vs CSDTMA
Click to expand...
Good that you actually linked the differences: in the speed range relevant to sailing boats, 2-14kts, SODTMA does the same 30sec interval as CSDTMA. True though, SODTMA has Guaranteed Time Slot Allocation.
 
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