Kenwood TS-830S Instruction Manual page 22

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"SECTION 5. OPTIONAL ACCESSORIES
5.1 OPTIONAL ACCESSORIES
The following optional accessories are available for use with
the TS-830S.
™@ REMOTE VFO
VFO-230:
The VFO-230 digital VFO provides maximum efficiency
and flexibility for all operating conditions, including
split-frequency operation, by combining a 20 Hz step
digital VFO with five memories
@ ANTENNA TUNER
AT-230:
The AT-230 antenna tuner includes the three new
bands and such functional features as a through-line
wattmeter, SWR meter and antenna selector switch
VFO-230
TL-922A
22
AT-230
@ EXTERNAL SPEAKER
SP-230:
The SP-230 is a low-distortion speaker with selectable
frequency response for high intelligibility in any mode.
The frequency
response
is determined
by the built-in
audio filters, which are effective in improving
signal-to-noise
ratio under
certain
interference
conditions, or when receiving weak signals.
@ LINEAR AMPLIFIER
TL-922A:
The TL-922A
is an
HF linear amplifier
operating at
maximum legal power, and employing a pair of 3-500Z
high performance transmitting tubes.
SP -230
SM-220