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The SLxRF modulator works by using an unused UHF channel on your TV to show 
the signal from your AV equipment.  On your TV, each terrestrial TV channel 
occupies a UHF frequency.    In the UK, a typical example of the fequencies used for 
each channel are: 
 
 
 
 
 
 
 
 
On the rear of the SLxRF modulator is a 8-way DIP switch (just below 'CHANNEL 
SETTING'.  By selecting the OFF (up) or ON (down) position of each of the 8 
switches, you can choose any UHF channel between 21 and 69 (471.25 to 
855.25MHz) for the the SLxRF modulator to display the desired AV signal. 
 
To avoid inteference between channels, there must be a 

3-channel UHF spacing

 

between each channel.    E.g. do not set up your DVD player on channel 40 and your 
satellite on channel 41.    The following settings are suggested as a guide : 
 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 
 
 

UHF 

channel 

UHF frequency 

(MHz) 

Switch 

Switch 

2

 

Switch 

3

 

Switch 

4

 

Switch 

5

 

Switch 

6

 

Switch 

7

 

Switch 

8

 

21 

471.25  0 0 0 0 0 0   

TEST 

22 

479.25  0 0 0 0 0 1   

TEST

 

23 

487.25  0 0 0 0 1 0   

TEST

 

24 

495.25  0 0 0 0 1 1   

TEST

 

25 

503.25  0 0 0 1 0 0   

TEST

 

26 

511.25  0 0 0 1 0 1   

TEST

 

27 

519.25  0 0 0 1 1 0   

TEST

 

28 

527.25  0 0 0 1 1 1   

TEST

 

29 

535.25  0 0 1 0 0 0   

TEST

 

30 

543.25  0 0 1 0 0 1   

TEST

 

31 

551.25  0 0 1 0 1 0   

TEST

 

32 

559.25  0 0 1 0 1 1   

TEST

 

33 

567.25  0 0 1 1 0 0   

TEST

 

34 

575.25  0 0 1 1 0 1   

TEST

 

35 

583.25  0 0 1 1 1 0   

TEST

 

36 

591.25  0 0 1 1 1 1   

TEST

 

37 

599.25  0 1 0 0 0 0   

TEST

 

38 

607.25  0 1 0 0 0 1   

TEST

 

39 

615.25  0 1 0 0 1 0   

TEST

 

40 

623.25  0 1 0 0 1 1   

TEST

 

B. Setting the output frequency

 

TV channel  UHF channel

UHF frequency (MHz) 

ITV1 23 

487.25 

BBC1 26 

511.25 

Channel 4 

30 

543.25 

BBC2 33 

567.25 

Channel 5 

36 

591.25 

B. Setting the output frequency (continued)

 

For the SLxRF modulator to
work, it must be set to use a
UHF channel that is not already
used by a TV channel, or the
VCR if it is connected to your TV
by a RF flylead (the coaxial
input).  

 

AV equipment  UHF channel

UHF frequency (MHz) 

VCR player 

39 

615.25 

Satellite box 

42 

639.25 

DVD player 

45 

663.25 

Contact your local TV station
to check what UHF channels are
used in your area. 

OFF 

'0' position 

ON 

'1' position 

2                                                                                                                                                  3 

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