SOONTAI - CATV Trap Filter / Notch Filter (CE Approved / High Q Series)

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- a trusted partner, provide the better choice for you.

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Trap Filter

Features

* Class A RFI Shielding

* Low Loss

* High Rejection

* Excellent Return Loss

* Flat Passband

* High Stability

* Excellent Mechanical Structure

* Precision Connector Thread

* Exquisite Plating Quality

* Good Weather Resistance

* Brass Housing

Introduction

A trap filter is used for filtering interference frequencies of Pay-Per-View(PPV) in CATV reception or other communication systems.

Soontai's TF series trap filters have many features (see below).

1. Very narrow notch window, affects nothing but the interference signal.

2. Lowest insertion loss, signal-through-loss reduced to a minimum.

3. High notch depth, provides excellent rejection capabilities to clear the interference signal.
(Fig. 1)

4. Excellent return loss, good impedance match reduces signal loss to keep the
signal clean. (Fig. 2)

5. Dual layer copper tubes provide the best radio frequency interference (RFI) / electromagnetic
interference(EMI) protection.

The table below shows popular model of TF trap filter series. You may specify other models and notch frequencies according to your needs.

The trap filters have Negative, Positive and Signal notch types. Please see the filter profile technical notes in our Tech Support.

Custom filters or more details on inquires, please refer to Custom Filters.

**Electrical Curve** ( CATV CH-5 )
This fig. shows the notch depth over 70dB. SPAN 5MHz Fig 1	Insertion Loss \| Return Loss SPAN 20MHz Fig 2

**General Specifications**
Item	PTF - CH5
Impedance	75 ohm
Frequency Range	5 - 750MHz
Notch Frequency	79.5MHz
Notch Depth	65dB (typ)
Insertion Loss	0.6dB (typ)
Video Loss(Picture carrier loss)	2.0dB (max)
Audio Loss(Sound carrier loss)	2.0dB (max)
Return Loss	14dB (typ)
Power Passing (* selectable)	DC +/-35V / 1Amp (max)
Dimensions (incl. M/F connectors)	21(¢) x 74(L) mm
Net Weight	55g

* Specifications may be change depending on the model or customer's requirement.