Keene RF Modulator Operating Instructions
Keene Electronics
RF Modulator
Operating instructions
Overview
By converting video and audio
signals to an RF signal, the Keene RF
Modulator allows the AV output of a
camcorder or other device to be fed
to a standard television receiver
through its aerial socket.
Typical applications include the
connection of a camcorder, video
recorder or SAT receiver to a
television set which has only a
standard aerial input; it can also be used to feed the signal from
a TV surveillance camera into a domestic cable installation.
The Keene RF Modulator will handle VHS, VHS-C and video 8
signals, as well as composite colour signals, with mono sound.
Connection and operation
• Make sure all devices are switched off before connecting.
• Connect the ‘audio’ output (often a black/white RCA phono
socket) of the source (output) device to the ‘audio in’ (RCA
phono socket) of the RF Modulator. If the output device
provides stereo audio, ie there are two audio out sockets,
connect the left (L) audio channel only.
• Connect the ‘video’ output (normally a yellow RCA phono
socket) of the source device to the ‘video in’ (RCA phono
socket) of the RF Modulator.
• Connect the ‘RF out’ lead of the RF modulator to the TV aerial
socket. If a TV aerial is to be connected simultaneously, then
a selector adaptor will be required.
1
Keene RF through modulator
Designed to be put in-line with aerial in and out connections, the
video and audio signal can then be put into any UHF channel
(from 30 – 40) desired. Ideal
for use with CCTV security
cameras and VCRs without RF
output. Supplied complete
with either UK style mains
adaptor (order code KRFT) or
Euro style mains adaptor
(order code KRFTE).
5
Keene distribution amplifier
4 way composite or S-video plus audio, each output
indistinguishable from the input, ideal for making up to four
simultaneous multiple copies. Uniquely the Keene Distribution
Amp also has a
switchable line drive
feature, giving the
ability to send audio
and/or video over
much longer cable runs
than normally possible
(up to 100m dependant
on cable). It works by
applying a signal boost
with emphasis on higher frequencies and
use of wideband ICs with very low output
impedance. Supplied complete with either
UK style mains adaptor (order code KDA)
or Euro style mains adaptor (order code
KDAE).
6
Keene wideband through modulator
Our RF wideband modulator enables a camcorder, security
camera, VCR or other device with AV (audio video) output to be
connected to the aerial socket of a TV. If required, it can be
permanently connected into the RF aerial downlead. The AV
signal can be positioned on any vacant RF channel between 21
and 69. This means, for example, that the signal from a security
camera could be introduced into the aerial lead and viewed in
the same way, and as easily, as any normal broadcast signal. An
additional feature of the Keene unit is that because it uses dip
switches, the settings will be saved in the event of a power
failure. Supplied
complete with clip-in
bracket for skirting
board/loft mounting and
either UK style mains
adaptor (order code
KRFTW) or Euro style
mains adaptor (order
code KRFTWE).
Keene Scart Distribution Amplifier
One input to five outputs, fully buffered using broadcast grade
video amplification ICs. Pin 8 is routed through (if the input goes
high all the outputs go high) and every pin connection is carried
through making it suitable for composite, S-video and even
RGB. Supplied in a robust metal case this is ideal for displaying
one signal on multiple TVs or for making up to five
simultaneous copies
from one source.
Supplied complete
with either UK style
mains adaptor (order
code SDA) or Euro
style mains adaptor
(order code SDAE).
Other video products from Keene Electronics