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yes i did, they build transmitter can transmit only 6 frequency in that frequency band ,and they used wire loop antenna 40 m length , and the lay it on the ground ,
but all the feedback from users ( all of them my friend ) was negative , the transmitter what the manufacture made it is send the...
Transmitter unit required features / specification:
1-Transmitter frequency:
Frequency can be selected from 40 khz to 140 khz.
2-Input power:
12v- DC or 18 v (2* 9V) Dc, both options should be rechargeable battery
3-Output Radio frequency power:
10 to 30 watts (to provide RF coverage range...
Hello Sir,
i am looking to buy a simple radio transmitter (40 khz to 140khz ) which will need transmitting antenna TX antenna to fit / comply with same frequency band ( 40 khz to 140 khz ) , thistransmitter has to provide radio coverage ( with out modulation only RF signal ) over 200 m...
hello ,
i am looking to buy Radio frequency transmitter ( 40 to 200 ) khz , coverage area for that transmitter 200 m radius,
so please if some one know how to build it , please let me know ,
br,
wael :thumbsup:
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