N
nos
- Jan 1, 1970
- 0
I am looking for a sort of wireless mi rophone that's really small
to use on stage(we want the actor to wear it). I looked at commercial ones,
but they're way too expensive. I was hoping to make a simple one myself(it
doesn't have to be great sound quality) and, after looking at some kits I
came to the conclusion that the simple fm transmitters were unsuitable
because their broadcast frequency probably shifts too much and too easily
since none of them are crystal controlled.
Could I use a VXCO somehow to transmit FM? (maybe with a frequency doubler
or something)
Does anyone have any good designs for stable FM transmitters? (I found out
there's 2 nice single chip transmitters, the BH1417 and BH1416 by rohm but
the design in the datasheet is for line input only. I guess I just add an
amp and a mic? are there any components I could leave out from the datasheet
design to simplify it?) also, the single chip designs have AGC, so that
would be a plus.
Could I just use a 1 MHz oscillator (like a can type) and some
discretes(including a mic) for a transmitter?
I found a good looking design at
http://www.techlib.com/electronics/amxmit.htm for an am transmitter, but
again it's for line level input, and adding an amp would make it larger
still.
Thanks for any suggestions, all are appreciated.
to use on stage(we want the actor to wear it). I looked at commercial ones,
but they're way too expensive. I was hoping to make a simple one myself(it
doesn't have to be great sound quality) and, after looking at some kits I
came to the conclusion that the simple fm transmitters were unsuitable
because their broadcast frequency probably shifts too much and too easily
since none of them are crystal controlled.
Could I use a VXCO somehow to transmit FM? (maybe with a frequency doubler
or something)
Does anyone have any good designs for stable FM transmitters? (I found out
there's 2 nice single chip transmitters, the BH1417 and BH1416 by rohm but
the design in the datasheet is for line input only. I guess I just add an
amp and a mic? are there any components I could leave out from the datasheet
design to simplify it?) also, the single chip designs have AGC, so that
would be a plus.
Could I just use a 1 MHz oscillator (like a can type) and some
discretes(including a mic) for a transmitter?
I found a good looking design at
http://www.techlib.com/electronics/amxmit.htm for an am transmitter, but
again it's for line level input, and adding an amp would make it larger
still.
Thanks for any suggestions, all are appreciated.
