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01/02/05 18:15
Modified:
  01/02/05 18:28

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#84236 - 433MHz ISM Band Is it Legal in INDIA.
Dear Forum Members,

My welding controllers having [ P89V51RD2 & P89C668 as their heart ] have network feature for communicating with central PC. From PC the welding parameters can be set and status of the machines can be monitored. At present I am using RS485 for this network feature.

I have seen some designs use Wireless communications for such networking. There are several readymade RF modules available at RS India and even local market. Most of them are 433MHz also known as ISM [ Industrila Scientific and Medical ] band. I am also planning to use such modules in my product.

Today, I checked Indian National Frequecy Allocation Plan available here http://www.dotindia.com/wpcc/NFAP/contents.htm and was surprised to see that 433MHz is not intended to be used without licence.

I did a search on the 8052.com forum for 433MHz and got good number of posts. After reading them I came to know that several Indian members have used such 433MHz modules in their product. I want to know is it legal to use these modules in India. What must be the max transmission power and/or range with such application to keep them legal.

Thanks & Regards,
Prahlad Purohit

List of 24 messages in thread
TopicAuthorDate
433MHz ISM Band Is it Legal in INDIA.            01/01/70 00:00      
   Requirements for licence            01/01/70 00:00      
      RE: ' '            01/01/70 00:00      
         A little story...            01/01/70 00:00      
            Same Story?            01/01/70 00:00      
               Similar story            01/01/70 00:00      
      433/315 RF tx/rx modules            01/01/70 00:00      
         Vital98 - Read Forum Rules            01/01/70 00:00      
            Alias names...            01/01/70 00:00      
            alias name usage            01/01/70 00:00      
         Module Suppliers.            01/01/70 00:00      
             433/315 RF tx/rx modules            01/01/70 00:00      
               433/315 RF tx/rx modules            01/01/70 00:00      
               Reliability.            01/01/70 00:00      
   safe erp            01/01/70 00:00      
      Yes License is required.            01/01/70 00:00      
         433MHz ISM band            01/01/70 00:00      
            Radiate 1mW or 1MW.            01/01/70 00:00      
               Does Cordless phones need license then?            01/01/70 00:00      
                  YES all the cordless are illegal.            01/01/70 00:00      
                     433Mhz license            01/01/70 00:00      
                        Call me.            01/01/70 00:00      
                     getting 433MHz licence            01/01/70 00:00      
                        It's more...            01/01/70 00:00      

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