I should add that I'm interested in this due to tape that was recorded
at 7.5 ips, 250 nWb/m. The tone sequence is not standard, with tones
changing abruptly as if a button was pressed, rather than a dial
On Thu, Jan 27, 2011 at 10:40 AM, Jim Sam <[log in to unmask]> wrote:
> Does anyone know how much test tone generators varied circa 1978?
> I know not to expect digital accuracy. For example, I would not
> expect a 10.00 kHz tone, but how much leeway was there? +/- 0.25kHz,
> +/-0.5 kHz, +/-1.0 kHz, etc.?