IOMICA Forum

Unfortunately there is a strong lobying against the modification of the regulation concerning the bullets....

If I realise a mix of resin and
something with higher density than lead but with effective density < 11.3
is it legal ?

Pierre

Hi,

I think that a polypropylen film is well too elastic, only a polyester film will give you a sufficient dimensional stability.
some germans skippers use crystal flower film with some success...
but I dont know wich type of material is it (PP,PE,PET).

Pierre

Hi,

A new method MUST have 1+2 features

1) being simpler of course

2) to be compatible with all the possibilities offers by the current rule
ie a legal boat under 2004 must be elligible by the new method.

it is an evidence that you need to relax some specifications to achieve 2)


3)don't ...

Hi Riku,

Where find more information on DSM system, is it comply whith
EN 300 328 ETSI regulation ?

from my point of view ISM band is a licence free band, but you need to
be inline with regulation.


it is very difficult to find information on ISM band, but on
documents I found a distinction ...

Hi Riku,

please could you clarify "that DSM is a real spread spectrum system since it occupies signal spreading with a pseudo-random spreading sequence"

DSM is a Spreadspectrum (like CDMA) over the ISM Band, or over each sub channel (1Mhz) in this last case DSM could be understande as à mix ...

hi everybody,

I note on http://www.spektrumrc.com/ :

DSM System Specifications
Frequency Band
2.400-2.4835 GHz
Channels
79
Channel Spacing
1 MHz


For information Bluetooth specification is :
2.4 to 2.4835 Ghz Technologie FHSS (Frequency hoping spread spectrum)
79 channels spacing 1Mhz
1600 ...