Labgear F4GO Instructions

Introduces LTE800 Filters

4G will soon be broadcasting in the UK at the 800MHz frequency causing interference for
thousands of households who watch Freeview™ TV channels via an aerial.

Labgear now have a range of high
performance CH59, LTE800 signal filters
which block these signals. These filters
have passed strict government tests
and include filters that are
at800™ approved.

F4GC

In-line CH59/LTE800 filter with coax
connections, integral coax lead
and plastic body

F4GA

Approved by at800™ in-line CH59 filter
with plastic body and separate coax
TV connection lead

F4GF

In-line CH59/LTE800 filter with F
connections and die cast metal body

F4GO

CH59/LTE800 filter with weather­proof housing for outside use,
ideal for masthead mounting

Why filters are needed and why Labgear filters are ideal for the job

The Problem

Freeview™ TV is broadcast across Ch21 to Ch60.
In 2008 the standard for 4th Generation Long Term
Evolution (4G LTE800) devices was agreed as Ch61
and 62. This leaves very little space between the TV and
4G operating bands and a higher risk of interference.

Ofcom estimate that up to 900,000 households which
use Freeview as their primary service will be affected by
interference to their DTT reception because they are
close to a mobile mast carrying 4G and are either:

Receiving DTT on Ch59 or 60 and getting
adjacent channel interference (approx 37%)

Or they have a UHF amplifier (or 5-wire
multi-switch) in their TV system (approx 63%)

The Solution

To prevent 4G LTE800 interference:

• You need a filter with a sharp cross-over

from the pass-band to the stop-band

• You need a filter with VERY high rejection

across the full 4G LTE800 frequency range

Labgear 4G filters have been specifically
designed to meet these requirements:
Pass frequency: 5-782MHz
Rejection frequency: 791-862MHz
(average rejection level -55dB)

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Typical CH59 Filter Rejection Figures