Dear Petr,
I have
just built an LF amplifier using a TBA810S to drive my antenna metering
bridge.
Output has been 3,5 watts at 136 kHz and 15 volts supply voltage. 500
kHz was
not on the table at that time, therefore no experiences on that
band.
In
general one has to experiment with the capacitors setting the upper
frequency
response to make them as low in capacity as feasible.
I have
also bought some other AF ICs to follow these ideas but have never
taken
the time to try them, sri.
OK?
73 Ha-Jo,
DJ1ZB
"Petr Malý" <[email protected]> schrieb:
Hi all,
My intention is to build a small
transmitter up to
some 10W for 136 and 505 kHz, this time not the D class, but B or
AB
class.
I think of employing AF amplifiers such as
TDA2003,
TDA2030, or similar. Of course, mainly 505 kHz is rather out of range so
that
nothing is guaranteed. This is why I ask before
experimenting.
Did anybody try to use these for 136/505
kHz?
Tks, 73, Petr, OK!FIG
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