Subj : Ham Radio Glossary (S)
To   : All
From : Daryl Stout
Date : Sun Jan 20 2019 12:05 am

From QRZ.Com, the Icom handout, and Part 97 Of The FCC Rules -
Ham Radio Glossary - An overview of amateur radio terms.

S/N
Signal To Noise Ratio

SAR
Search And Rescue

SASE
"Self Addressed, Stamped Envelope"; for more information, please see
QRZ's "QSL Corner" at http://www.qrz.com/qsl.html.

Scan
Continually sweeping frequencies looking for signals.

Scan Edge.
End and start frequencies for a scanning range.

Semi Duplex
An operation mode in which transmits and receives are
accomplished on different frequencies alternatively.

Sensitivity
Indicates how weak a signal the reciver will pick up.

Set mode.
An peration mode used for radio to set less frequently used control
features.

SFI
See "Solar Flux Index"

SHF
(super-high frequency). The frequency range 3-30 GHz.

Simplex
Communicating directly from radio to radio (without the use of an
intermediary repeater). This term is normally used in the context of
environments that frequently use repeaters. With simplex, the frequency
is identical to all stations on that frequency.

Simplex Repeater
A radio that has a digital audio store-and-forward relay system. Produces
results similar to that of a conventional repeater.

Slug