This page is dedicated to corrections of my published material. Hopefully there will not be many entries . . .
Electronic Circuits & Secrets of an Old-Fashioned Spy
Page 95. Sorry, folks, a reader has pointed out that the Tone Dialer's memory capacity is more limited than I'd mentioned. I'd said the dialer could hold 33 strings of 32 digits for a total of 1056. However, the dialer's memory chip can only hold 480 digits.
The principle of carefully organizing your strings still applies, but you will need more than one tone dialer after all. Also the PAUSE key is not used to pause the dialer's output. Rather, you will have to replay the string on a subsequent attempt.
Please accept my apologies for any confusion this has caused.
-- Many thanks to that anonymous reader.