The Pulsar mobile phone is not a 1969 product, they were produced from the late 1970's through the 1980's.
These drawer units make good raw materials for building repeaters. They can be had for next to nothing or even for free, so you can build a complete repeater for lunch money. Much of the circuitry is of the same vintage as Micor. The PA's are continuous duty - after all, a duplex phone transmitter is active for the duration of a phone call - no PTT. Also, these are synthesized radios- but the nifty thing is that there is no microprocessor - the synthesizer loop is programmed with a diode matrix. Once you master the logic - you can move it to other frequencies - and without spending a dime to have channel elements re- rocked. [these units actually do have a microprocessor for the supervisory logic - but we remove that for amateur repeater applications] They do have a fixed offset from TX to RX. Since that offset is 5 MHz at UHF, those can be a full duplex link or repeater in one box. For VHF, it would be easier to use two drawers since there is only one VCO. Also, there is no squelch circuit so you will need an audio or squelch gate board from a Micor or a squelch circuit like the one from Link. Finding a manual is necessary for a successful project. The drawer unit will have a model number such as T1739 or T1839 [A,B,C,D, etc.] This will help tell what band the unit is and what book to look for. You can also open it and look for assembly numbers that begin with TLD or TLE to determine the band.
