The FCC rules provide the following definitions for fax:
Image. Facsimile and television emissions having designators with
A, C, D, F, G, H, J or R as the first symbol; 1, 2 or 3 as the second
symbol; C or F as the third symbol; and emissions having B as the
first symbol; 7, 8 or 9 as the second symbol; W as the third symbol.
Facsimile. A form of telegraphy for the transmission of fixed images,
with or without half-tones, with a view to their reproduction in a
permanent form. (RR)
Telegraphy. A form of telecommunication in which the transmitted
information is intended to be recorded on arrival as a graphic
document; the transmitted information may sometimes be presented
in an alternative form or may be stored for subsequent use. (CS)
Since it can be transmitted in either analog or digital form with almost
any kind of modulation and there are no encoding restrictions, a fax
seems to be any printable document -- even if it isn't printed immediately.
73,
John
KD6OZH
----- Original Message -----
From: KV9U
To: digitalradio@yahoogroups.com
Sent: Monday, November 27, 2006 04:25 UTC
Subject: Re: [digitalradio] Fast HF Modem Development Re: OFDM data D1D
Which has made me wonder why so few digital hams send FAX images on the
phone bands.
I still would like to get a clear understanding of just how far we can
go here in the U.S. with what constitutes a FAX.
