P
Paul Burridge
Guest
On Thu, 11 Nov 2004 07:33:57 GMT, Rich Grise <rich@example.net> wrote:
whatever) wire taken from a suitable tapping point on the tank coil.
That should be all the matching necessary.
--
"What is now proved was once only imagin'd." - William Blake, 1793.
Overkill. The modest range could be achieved with the 30cm (orOn Thu, 11 Nov 2004 12:34:37 +1100, rigg wrote:
I have a tv modulator, ch0 46MHz, and I want to boost its output with a
simple one transistor amp connected to a short antenna so it will transmit
up to about 20 metres. I was thinking of using a 2N3866 in a class C
configuration with a 12v supply. Can someome give me advice on how to select
values or provide a simple circuit so I can do this? I am not sure how to
pick values when using a short antenna of 30 cm. I assume matching
impedances must come into this somehow... I have seen lots of circuits on
the web but they are for much lower frequencies. Thanks Rigg
With proper antennas on each end, what you already have should be able
to cover 20 meters distance, with no problem.
Well, except that a 1/2 wave dipole is a little over 3 meters long.
whatever) wire taken from a suitable tapping point on the tank coil.
That should be all the matching necessary.
--
"What is now proved was once only imagin'd." - William Blake, 1793.