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View Full Version : Tx - Rx pair - where to buy this in India.



rohitsivakumar
12-05-2005, 02:36 PM
Hello, I am interested in transmitting and receiving data through Rx-Tx pair working in either 418mhz or 433Mhz etc. Where can I get this pair and what would be cost. There are couple of sites which sell them but the only problem is by the time I get it the cost would have addons of custom duty, excise duty, octroi and all such stuffs. So I am interested in get some thing locally it would be best else atleast if someone could help me trace the guy who sells these pairs in India then it would be great.

My second question: I am in a look for a infrared sensor working for a range of 30 feet. The purpose is if someone cuts the infrared sensor withing this 30 feet range then I would like to do something. So where can i get such a sensor and what is name (technical name) to buy this component from the Indian market??

Thank you so much for your time. Anxiously waiting for some help for both my questions.

lhx
12-05-2005, 10:40 PM
Where can I get this pair and what would be cost.
In mumbai they are available at Lamingnton road and would cost abt 700 bucks.

Visha Electronics
1st Floor, 17 Kalpana Bldg.,
349 Lamington Road,
Opp PPolice Station,
MUMBAI 400 007.

PH# 23862650 / 23862622
FAX# 23884401
EMAIL: visha@hathway.com


I am in a look for a infrared sensor working for a range of 30 feet. The purpose is if someone cuts the infrared sensor withing this 30 feet range then I would like to do something.

with IR u have two options: modulate it or use it without modulation.
If u modulate it, there's a good chance that the receiver would detect the modulated light reflected from nearby objects even if there is an obstruction in the straight path.

If you dont modulate it, reflections wont affect much, but the signal would be too weak to be differentiated from noise.

try lasers.
anyways if you want to do it with IR, place the IR TX and RX (or atleast the RX ) in coaxially arranged pipes so that the RX sees the TX more than anything else. use modulation.

You can use TSOP 1738 or any TSOP 17XX as receiver. these are available at all electronic spares shops.

krishneer
01-07-2006, 02:59 PM
sir,

iam having tx/rx 433.92 mhz rf module which cost Rs.380/ perpair. if the qty increases the price will also reduce. modules are brand new and imported from taiwan .for details please email to:
shiva_technosystems@yahoo.ca, krishengineer@rediffmail.com
thanking you,
g.krishnamurthy




Hello, I am interested in transmitting and receiving data through Rx-Tx pair working in either 418mhz or 433Mhz etc. Where can I get this pair and what would be cost. There are couple of sites which sell them but the only problem is by the time I get it the cost would have addons of custom duty, excise duty, octroi and all such stuffs. So I am interested in get some thing locally it would be best else atleast if someone could help me trace the guy who sells these pairs in India then it would be great.

My second question: I am in a look for a infrared sensor working for a range of 30 feet. The purpose is if someone cuts the infrared sensor withing this 30 feet range then I would like to do something. So where can i get such a sensor and what is name (technical name) to buy this component from the Indian market??

Thank you so much for your time. Anxiously waiting for some help for both my questions.

taknev13
01-07-2006, 04:25 PM
hey wot kind of modules are you expecting which are just pluggable types or simple ic's which u will interface urself?
and wots your budget?and what is your city of residence?

regarding ir 30 feet is a doubt coz it mite just not be able to reflect back at such large distances

docel
01-08-2006, 01:52 AM
hi,
You need a PIR sensor. This detects 'body heat'. 30ft is no problem.
You can also use an 'Ultrasonic Pair' as a 'flood light" This will detect ANY movement in the room, even a butter fly. It will work upto 300 ft in a closed space.
You need "skill' to build and align this.
Do you want ot BUILD it or just USE it??
Plenty of 'ready made " stuff available, for a price.
Taknev13 will help you 'BUY" it. All you have to do is just 'keep' it there and it'll work. Right taknev?

IR can reflect back 30ft.

tpsbpl
10-27-2007, 01:17 AM
you can get General-Purpose Dual Element Pyroelectric Infrared Radial Sensor (PIR Sensor With fresnel lance) here
http://onlinetps.com/ViewItem.php?ItemID=138

gamegurus
01-11-2008, 01:25 AM
At Sunrom its only 250/- per pair, Quite Cheap I believe, Anyone knows it cheaper than this?

http://www.sunrom.com/index.php?main_page=index&cPath=cPath=43_89

http://www.sunrom.com/bmz_cache/f/f4d97716db1b09edf923a3d502ca3d23.image.62x110.jpg

http://www.sunrom.com/bmz_cache/d/dfd01ed75c870d614d2c02f074ddff27.image.110x47.jpg

tpsbpl
01-11-2008, 01:31 AM
@rohitsivakumar
http://www.onlinetps.com/ViewItem.php?ItemID=139
http://www.onlinetps.com/ViewItem.php?ItemID=140

tpsbpl
06-29-2008, 02:56 AM
New offer on 433mhz Rx Tx Module with free hard to find 51K resistance
Now get 433mhz Rx Tx Module pair @ Rs 375.00 Only
* offer for limited time

http://onlinetps.com/ViewItem.php?ItemID=269

http://onlinetps.com/items_images/1214687660433mhz%20RxTtx%20module.JPG

docel
06-29-2008, 06:47 PM
:evil: tpsbpl:

How many times should we tell you NOT to multiple post the very same 'sales advertisemens ' on the forums??

Sell what you want, but remember, this is a Technical Discussion Forum - not your company's personal website. Anything new, post in the Buy & Sell. No need to post repeatedly, in all other Forums. In some places, you have posted your sales ads WITHOUT even reading the requirement of the OP :evil:

Stop multiple posts or I will delete ALL your posts from the entire Forum!!

-Moderator.

kpsingh
07-11-2010, 09:48 PM
anyone know where i can find the rx/tx modules in punjab, precisely in ludhiana
if anyone can help :eek: :confused: :p

adith
09-01-2010, 04:37 AM
Rf module of 315mhz and 433 mh...z available at Roland electronics at rs 250only..and PIR sensor for Rs125

kpsingh
09-25-2010, 03:13 PM
hello guys

watching for RX TX pair?:confused:

i got one site at nominal price of 400/-
http://www.vedrobotics.com/products.php
:rolleyes:
thnx for the help for my previous question:cool:

kpsingh
09-25-2010, 03:15 PM
thnx for reply sir

but where is this roland electronics???

adith
12-05-2010, 12:11 PM
Roland Electronics
4-3-345/5 Gujarati Galli
Besides Gujarati school
Koti Hyderabad-500195
ph:040-24762746,24756823,09849070411
They courier components to all parts ....
868mhz rf modules ,cc2599,tr1100 has also arrived per pcs i think i approximately rs300 each
also check out
Texas Electronics and tools
in koti hyderabad he too has a good collection of robots spares....
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