and accessories
SLO-260 (1976)
The first industrial Beta, the SLO-260, was released in
1976 and based on the SL-7300/SL-7200 with an added an
audio level control and VU meter and retained the audio
dub of the SL-7300 that was dropped on the American
SL-7200.
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SLP-100 (1976)
Play-only industrial version of the original tunerless
SL-6300 with recording capabilities removed. Released as
a companion piece to the SLO-260, the idea was that
industrial films or training videos would be shot with
or edited down to Beta on the SLO-260 by higher-ups and
distributed alongside one of the play-only decks to
training sites. Similar dynamics were present in the
Umatic lineup.

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Sony marketed these machiens as the "Basic Betamax,"
positioning it as the VCR to get for retailers,
educational institutions, and smaller businesses than
who would be interested in buying theo the Umatic
ecosystem.
SLO-320 (1977)
Unlike most other markets where Beta II became the
"standard" speed, with some decks, particularly those
not made by Sony, not supporting it at all, industrial
Betas continued to primarily operate in Beta I, like
this SLO-320 that debuted after the first Beta II speed
home recorder. This deck was built for industry use from
the ground up and had a solenoid controlled transport
that allowed for full functionality from a remote
control originally intended for use with Sony Umatic
decks.
300 series VCRs (other than the portable SLO-340) offer
automatic rewind and repeat modes, RF modulators, and
BNC composite video jacks. The record decks also use the
Sony 8 pin "VTR" connector from the CV-2000, AV, and
Umatic series decks as well.
A second separate remote, the
RM-300 Auto
Search controller, offered additional video search
controls, allowing for specific sections of the tape to
be wound to and played using the timing signals recorded
with the video.
The jack for the RM-300 remote went on to be used on
many industrial Sony Betas, and a number of methods were
developed for controlling these machines (and the Umatic
decks that shared the same remote interface) with
different computer systems. Several of these are
described on the
Betamax
Oddities page.
Followed up by the SLO-323, which fixed an issue with
the SLO-320 losing sync.
SLP-300 (1977)
Play only equivalent of the SLO-320.
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Back of the SLP-300, showing the remote jack, power
outlet, composite video output, audio output, VHF
output, and muting switch.
SLO-340 (Late 1978 - early 1979)
The first portable Beta. Recorded and played back
Beta I only and was similar in size to the preceding
portable Umatic recorder. Unlike the similar domestic
SL-3000 which used the Sony "K" camera connector, the
SLO-340 used the existing 10 pin standard popularized on
their earlier EIAJ VTRs, and was suggested to be paired
with a DXC-1610 color Trinicon camera. Deck itself cost
1,395 dollars and weighed about 20 pounds. AC power was
provided by the AC-340 adaptor (included) or the
DCC-3000 car adaptor (optional).
SLO-323 (Early 1980)
Upgraded version of the SLO-320 with linear stereo and a
variable speed mode with BetaScan that ranged from 1/10x
to 2x speed. This deck also offered improved assemble
editing capabilities.

(from left to right: SLP-303,
RX-353
controller, SLO-323)
A medical-grade variant of the SLO-323, the SLO-323MD,
was intended to store and retrieve images from X-ray and
other medical scanning devices and features an improved
freeze frame for accurate single frame viewing and
hospital-grade power circuitry.
(The
Home Video Handbook) It was the first
1/2 inch videocassette recorder to receive medical UL
approval. The RFK-534 RF modulator is an optional extra
instead of being included with this model. (
AV
Guide)
SLP-303 (Early 1980)
Similarly upgraded from the SLP-300, play-only version
of the SLP-323.
SLO-383 (1980)
Industrial editing Beta with linear stereo, flying erase
heads, BetaScan, and external sync capabilities. Offered
15x forward and 10x reverse BetaScan and slow motion to
1/20 normal speed. Could be controlled by the
RM-300,
RX-303, or
RX-353
search controllers. Can also be connected to an
RM-430
or
RM-440
automatic editing controllers to cue up edits between
two decks and perform the editing operations. The
expanded editing interface controller socket is actually
an extension of the original RM-300 socket, adding an
additional eight pins. Also plays (but does not record)
Beta II and III. Cost around 4,000 dollars.
SLP-305 (Early 1983)
A larger updated version of the SLP-303 play-only
industrial machine that was also equipped to play Beta
II and III.
SLO-325 (Early 1983)
An updated larger version of the SLO-323, this
multispeed industrial unit could playback all three
speeds but still only record in Beta I.
SLO-420 (Early 1983)
Unlike the 300 series of industrial Betas, the SLO-420
was an industrialized version of the SL-F11 and retained
the linear stereo dropped on the American SL-2500. It
could record in Beta II and III and playback all three
speeds. Added to the back is the extended remote control
jack, the 8 pin TV connector, and BNC jacks in place of
the RCA composite connectors. The pushbutton tuner was
removed but the 14 day timer was retained. Being based
on the SL-F11, it employs Sony's 711 chassis with
individual pancake motors driving each reel. PAL
equivalent was the SLO-420P.
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