Information on intrisicly safe radios

[racerman1cars]

I was wondering if it is true that "IS" radios [the Saber & Ht-600 with green dots
are low power? A friend tod me that these old radios are low power.
Steve

[k2hz]

The regular 5W HT600 can be intrinsically safe. It is still the same basic radio, you are just getting the added Factory Mutual certification indicated by the "green dot" on the radio and the associated batteries.

[HLA]

and don't always trust just that green dot, somebody could of added it themselves from a different radio or if it has ever been taken apart it needs to be checked again and re certified.

[N9LLO]

There is absolutely, positivly not one spec of difference between an IS radio and any other except the FM/IS rating carries a liability insurance policy that protects the manufacturer in case you blow up the grain elevator or the like.
You the customer pay for the insurance policy that protects Motorola the manufacturer from your stupidity. Non IS radios carry a warning they are not to be used in explosive atmhospheres to protect the manufacturer from lawsuits that might arise from what they deem improper use of their product.


There IS a difference in the batteries. They are current limited to prevent a short circuit in the radio or battery from generating enough current to melt things or turn something red hot. This current limit might limit power output on certain radios.

I got this from some Motorola engineers that were at our site trying to figure out why the "new" MTX9250 radios would not work on out system. At the time we were also investigating the use if IS radios in out semiconductor fab.
We did go ahead and buy some of them although it was determined they were really not necessary.

Chris
N9LLO

[Jim202]

I don't think those "MOTOROLA ENGINEERS" knew what they were talking about. If you look at an IS rated
radio and a non IS rated radio, you should find that they are made somewhat different. The IS radio should
have a better seal on the entire radio to prevent gases from entering the radio. The non IS radios do not
have the tight gaskets in all areas of possible openings like the IS radios do.

If you run into someone that is telling you there is no difference, I would ask just what they are basing their
position on. Obviously they haven't been into the guts of an IS rated radio recently.

You can even get cell phones that are now rated for IS service. The Sprint "i325 IS" is an IS rated phone.
Have used a number of them. They are constructed different from a normal cell phone. There is even a
rubber gasket sealing the accessory jack on the bottom of the phone.

Jim

There is absolutely, positivly not one spec of difference between an IS radio and any other except the FM/IS rating carries a liability insurance policy that protects the manufacturer in case you blow up the grain elevator or the like.
You the customer pay for the insurance policy that protects Motorola the manufacturer from your stupidity. Non IS radios carry a warning they are not to be used in explosive atmhospheres to protect the manufacturer from lawsuits that might arise from what they deem improper use of their product.


There IS a difference in the batteries. They are current limited to prevent a short circuit in the radio or battery from generating enough current to melt things or turn something red hot. This current limit might limit power output on certain radios.

I got this from some Motorola engineers that were at our site trying to figure out why the "new" MTX9250 radios would not work on out system. At the time we were also investigating the use if IS radios in out semiconductor fab.
We did go ahead and buy some of them although it was determined they were really not necessary.

Chris
N9LLO

[N9LLO]

I base my info on the Jedi and Waris series. There is no difference. Same seals, internal parts, everything. It's just an insurance policy. We had a 4 man sales team from Schaumburg and 6 engineers from various corners of the globe here for a week. That was the story they all told.


Chris
N9LLO

[k2hz]

I base my info on the Jedi and Waris series. There is no difference. Same seals, internal parts, everything. It's just an insurance policy. We had a 4 man sales team from Schaumburg and 6 engineers from various corners of the globe here for a week. That was the story they all told.


Chris
N9LLO

The same is true of the HT600. The only difference between an IS and non-IS HT600 is the green dot and FM approval sticker.

[DJP126]

I base my info on the Jedi and Waris series. There is no difference. Same seals, internal parts, everything. It's just an insurance policy. We had a 4 man sales team from Schaumburg and 6 engineers from various corners of the globe here for a week. That was the story they all told.


Chris
N9LLO

The same is true of the HT600. The only difference between an IS and non-IS HT600 is the green dot and FM approval sticker.

There is one other restriction to an IS/FM radio. ANY component that is replaced CANNOT be substituted by a "like" part. Even if a manufacturer's p/n crosses over to a JEDEC number, you MUST use the manufacturer's part not the JEDEC replacement.

[N9LLO]

There is one other restriction to an IS/FM radio. ANY component that is replaced CANNOT be substituted by a "like" part. Even if a manufacturer's p/n crosses over to a JEDEC number, you MUST use the manufacturer's part not the JEDEC replacement.

_________________
Dave


There is a certification program offered that will allow self maintaining users
(like my employer) to repair your own FM/IS radios and maintain the FM/IS certification. The condensed version was stated above by Dave.


Chris
N9LLO

[txshooter]

In reference to the question about IS radios being two watts, I have seen both 2 watt and 5 watt versions of the same radios. I believe (Canadians correct me if I am wrong) that Industry Canada had more strict rules on IS radios and they were limited to 2 watts.