Toner Cable 7893D Series TVRO Interference Filter - Manual

Telephone: Nationwide: Fax: E-mail: Internet:
02/03
TVR
O
Interf
er
ence Filter
s
215-675-2053 800-523-5947 215-675-7543 [email protected] http://www.tonercable.com
969 Horsham Road
Horsham, Pennsylvania 19044 USA
TVRO Interference Filters
Features
 Economical Price
 Quick Delivery
 Less than 6 inches Long
 Low Differential Group Delay
 Low Insertion Loss
 Other Frequency Bands Available
Upon Request (Including International)
 Highly Selective
7893D Series
The Series 7893D C-band bandpass filter is installed
between a TVRO feedhorn and the LNA or LNB to suppress
strong out-of-band interference caused by marine or airport
radar systems. Coastal and marine navigational radar fre-
quencies (2.9-3.65 GHz) are just below the TVRO band and
frequently wipe-out transponders 1-5 in TVRO’s installed
near harbors. The airport altimeter band (4.25-4.40 GHz)
will affect channels 22-24 at TVRO sites near airports. The
model 7893D interference filter operates at RF before down
conversion. This prevents the generation of undesirable
mixer products and receiver “desensitization” due to strong
out-of-band signals.
7893D mounted between antenna feed &
LNA (both Vertical & Horizontal Polarization)
7893D Suppresses Radar Interference
Typical Response Curve of 7893D
Specifications
Passband: . . . . . . . . . . . . . . . . .3.7-4.2 GHz
Insertion Loss: . . . . . . . . . . . . . .0.4 dB typ at FC
0.5 dB roll off at band edge
VSWR: . . . . . . . . . . . . . . . . . . . .1.92:1 typ
Group Delay: . . . . . . . . . . . . . . .Less than 8 ns typ
Rejection:
25 dB min . . . . . . . . . . . . . . . .3.65/4.25 GHz
50 dB min . . . . . . . . . . . . . . . .3.55/4.35 GHz
60 dB min . . . . . . . . . . . . . . . .3.50/4.40 GHz
Mechanical Specifications
Dimension: . . . . . . . . . . . . . . . . .5 3/4”L x 2 3/4”H x 3 7/8”D
Weight . . . . . . . . . . . . . . . . . . . .2.60 lbs
Flanges*: . . . . . . . . . . . . . . . . . .CPR-229G, CPR-229F
*Half gasket is supplied with each model
Models are available for the
following frequency bands:
11383 (3.6 - 4.2 GHz)
7893-3400/3700
7893-3400/4200
7893-3600/4100
7893-3740/4160
TVRO Interference Filters - 7893D Series