Re: modified 49 m.h.z. cordless phones
I was hoping you'd get some good answers to your question. Failing
that, here's some observations about a used Radio Shack 43-1107
The MC3361 narrow band FM IF amplifier spec sheet can still be found
on the net.
The crystals are labeled 3.58M and 10.1M.
The ceramic filters are TDK FFE type (105na).
A number of the trimmer resistors and trimmer capacitors have their
functions labeled on the PCB (printed circuit board).
The 12 leads to the RF board have abbreviated function designations
on the PCB.
The large shield can be removed by removing 4 screws and wicking off
2 small solder blobs.
The 2 smaller shields are attached like a 4-pin through hole DIP and
The Rx and Tx areas are marked on the RF PCB.
If nothing else, the IF section appears usable.
--- In email@example.com, "allanegleston"
> Have heard that some of you have used modified 49 m.h.z cordlessadvance.
> phones. Where can I find such schematics and so on. Thanks in
> 73's Allan