On Jun 3, 2008, at 12:15 PM, Stein Roar Brobakken wrote:
> I do wonder if anyone have any good experience to use the FT920 as
> RTTY contest radio?
Rag, this may or may not affect your thoughts on it as an RTTY radio,
but page 4 of the FT-920 user's manual
(http://hamradio.online.ru/ftp2/man_ft-920.pdf
) states:
> FSK: J1D/J2D Audio-Frequency-Shifted Keying
I.e., the FT-920 is a Keyed-AFSK rig, instead of a direct FSK rig (it
uses J1/J2 instead of F1/F2 emission mode).
Page 56 further explains, under the heading "FSK RTTY Operation",
> This mode utilizes the tone generator in the FT-920
> for production of the required Mark and Space tones
> used for RTTY operation.
Yaseu also used Keyed-AFSK in the FT-990 and FT-1000D, but switched to
using direct FSK with the FT-1000MP.
73
Chen, W7AY
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