hi..guys... which antenna is suitable for the following circuit??
breif me about inductors l1-l2...and also for l3
http://www.circuitstoday.com/wp-content/uploads/2009/12/2km-Fm-transmitter.png

 

First concern is what you are using it for and on what frequency?

 

Have you read this? http://www.circuitstoday.com/2-km-fm-transmitter

 

sry for lat rply..iam usng jst to trasmit voi signal..in frq rang of 89.9MHZ..

 

sry for lat rply..iam usng jst to trasmit voi signal..in frq rang of 89.9MHZ..

Could we, like, you know, learn to write in, like, possibly, you know, full words. Perhaps, maybe?

 

That is quite a lot to expect from Instant Messaging Generation. Doncha think?

 

sry for lat rply..iam usng jst to trasmit voi signal..in frq rang of 89.9MHZ..

Giberish not allowed. Just plain English.

 

If you are not authorized to transmit in the 88-108 Mhz band, the FCC can fine you $10,000.00 for each occurrence. The FCC is not noted for its sense of humor or notions of forgiveness.

 

If you are not authorized to transmit in the 88-108 Mhz band, the FCC can fine you $10,000.00 for each occurrence. The FCC is not noted for its sense of humor or notions of forgiveness.

That's assuming, of course, that the OP is in the U.S.

In the U.S. I believe unlicensed transmissions in the FM broadcast band are authorized provided they meet certain power and non-interference requirements.

But as soon as the OP mentions "long range", my guess is that these requirements aren't going to be met. Of course, if "long range" means "50ft" instead of the "5ft" he is currently getting ....