RE: Older Equipment
It is a radio that at one time was used in the so called Ultimate combos of many glow and electrics that was sold by Tower.
In otherwords is is the same type of thing as your other radios no features and one airplane one transmitter, I'am pretty sure it has not model memory correct me if I am wrong.
Was it reliable one time, sure but the problem arises if you stay in the hobby/sport and start adding airplane like you already have to some extent and we all tend to do.
The vast majority of folks will soon be hankering for many more features you can bet on that, I fly and teach every day and most who have radios such as that are looking to replace them even before their first solo's.
That radio radio for someone brand new an not encumbered with old radios and receivers is penny wise and pound foolish. Even free it will be an expensive choice ultimately.
For new folks always acquire the most capable radios you can afford and that means modern 2.4 also. The Sky is not falling as some so delight in crying. It is actually quite inexpensive.
Do remember RC electronic do not last forever either actually stuff from the last thirty years is not all that durable.
Plastic gimble parts as well as cases dry up and crack , thats real bad in the case of gimbles.
RF sections drift over time time even sitting new in the box, that well bad for a whole bunch of reasons.
Switchs and trim pots as well as stick pots can also corrode and become unreliable from disuse. thats well real bad.
Jester has given you some of the best advice Here.
John