Hi to everyone
I bought one of the Ramsey FM100B which states it good from 5microwatts to
25mw. Anyways it leaves out the final transistor that would deliver 1 watt to the output.
Here my question.
U6 is the driver amp.
U6 GAL5 has a .001uf capacitor going to the base of the final transistor MRF557
which is Q6.
The ouput of Q6 goes to your PI filter output network.
Ok Ramsey leaves out U6. This leaves the signal coming out of U6 the driver
chip still going to the base of a transistor Q6 that no longer in the circuit.
the lowpass filter is still hook to the collector of the Q6 transistor.
With this transistor out of the circuit how does the output of U6 get to
the ouput without the final transistor no longer in the circuit ??
I see nothing in the book to jump the output of U6 chip to the output
of the transmitter.
This leaves all the RF signal coming out of U6 on the base of a transistor
that not legally allowed to be on a Part 15 transmitter.
Rmember Ramsey make the FM100B for US opperation and another
uppgraded model with the 1 watt output which has this Q6 transistor in it.
They use the same circuit board for both transmitters.
Anyways are you suppose to jump the output of U6 to the final
PI network. I cannot find anything in the book that say to do this.
Thanks
SKW40