Kathrein ESM 20 21110008 Leaflet



Conforms to: 
EN 60728-11 and EN 50083-2



For interactive CATV/HFC networks



End-outlet for stub and star-wired 
systems with very low connection 
loss



Very high isolation between modem 
and TV/radio outlet ports suppresses 
disturbance of TV/radio reception by 
the modem



Ingress noise blocking function stops 
irradiation of unwanted disturbing 
signals from the subscriber



Selective signal splitting to TV and 
radio outlet ports



Stable diecast housing



With screw and claw fi xing, suitable 
for installation boxes with diameter of 
55-65 mm



Can be combined with almost all 
installation programmes



Connections: 
TV: IEC (plug); 
Radio: IEC (socket); 
Modem: F (socket)



Screening factor:    
    5-300 MHz > 85 dB
300-470 MHz > 80 dB
470-862 MHz > 75 dB



Packing unit/weight (pc./kg): 
10 (50)/1.1

21110008

1)

 Between modem and TV/radio ports

2)

 In frequency range of 5-34 MHz

³

)

 Transmission as of 109 MHz is possible (additional gain approx. 2-3 dB)

Type
Order no.

Connection

Loss 

(dB)

Frequency range 

(MHz)

Internal 

decoupling 

1)

(dB)

5-47 

Rück

47-68

B I

87,5-108

UKW

111 ³

) 

-862

VHF/UHF

ESM 20
21110008

TV

Connection loss

≥ 60

 2)

5-34 MHz > 78

47-68/

111-862 MHz > 25

87-108 MHz > 25

Radio Connection 

loss

≥ 70

 2)

Modem 

Connection loss

4                       

4                  

5