Cassette Interface Assistance

Tony Duell ard.p850ug1 at
Tue Feb 28 13:29:53 CST 2017

On Tue, Feb 28, 2017 at 4:21 PM, allison via cctalk
<cctalk at> wrote:

> The tape recorders used had no agc.  They were simple portables and used the
> mic or line input and headphone output.

I have to disagree with you there. I have just looked at the documentation for a
couple of the Radio Shack tape recorders commonly used with TRS80s, and
both have automatic gain control on recording.

It is actually quite rare to see a simple portable cassette recorder which
doesn't have automatic gain control (automatic level control). The early
Philips machines like the EL3300 are the only ones I've come across.


More information about the cctech mailing list