Tuned Radio Frequency Receiver project problem.

[GURMEET singh]

I am thinking about making a project viz. TRF receiver.I have read a lot about TRF receiver.But i dont know about the internal circuitary of RF amplifiers,Mixiers,Local oscillators and If amplifiers and How to select the exact Henries and Farads of Inductors and capacitors used in Band pass filters ....
Please help....

 

[chuckey]

1. You need to know what frequency you want to receive, to get the tuning of the circuits.
2. Use google to search for "trf receivers" all sorts there. ( www.google.com)
3. Goto WWW.WICKIPEDIA.ORG and search for receivers because you do not seem to know much about them.
Frank

 

[GURMEET singh]

I have already searched on google and wikipedia but not getting the exact deaigns.And i want to receive 88-108 MHZ signals....

 

[Audioguru]

88MHz to 108MHz is for the FM broadcast band. No FM radios are TRF type, instead they are mostly super heterodyne type, although there are a few extremely simple Mickey Mouse super-regenerative radio receivers that are actually AM receivers that are tuned to one side of an FM radio station to decode the FM using "slope detection".

You need to learn about the basics of radio circuits.

 

[chuckey]

Providing you can do with mono, there is a type of FM receiver with a "zero" frequency IF frequency with a pulse counting detector. This type of receiver can be stable and reasonabley sensitive with only a couple of coils to make.
Frank

 

[Audioguru]

Maybe the nOOb should make a simple crystal radio that is tuned to around 100MHz.