"Telamon" wrote in message
...
In article ,
"David Eduardo" wrote:

"dave" wrote in message
...

Why not just record the station as proof you received it?

EKKO stamps ended after The War, and until the 60's, recording was
impractical. In fact, even in the 60's it was not a good idea... most
tapes
made in that era deteriorated rapidly. Most of my prized audio IDs did
not
make it into a more advanced media as the tape flaked... some nice ones
like
HCRE1 855 and CX28 were lost that way, although verified by letter or
card.

There were wire recorders. Very durable. You could also record on vinyl
records.

Have you checked the price of a wire recorder, in today's dollars? They cost
more than a car did when they were available.

And I don't recall any recorder that could record directly to vinyl. Radio
nets and some major stations had disk recorders that recorded onto
aluminum-center acetate disks, with very expensive heads that needed
constant replacement . Acetates were also used to make the master for record
pressing.