Ant mod VHF

TV modulator for individual TV antenna

Apllications

Μonitoring cameras recording.

Watching a TV program in a central antenna ( any takes the receiver ).

Specifications

Modulator channels  :   5 ... 12 and S11 ... S 41

Passing TV Channel :   5 ... 12 and 21 ... 69

Modulation              :  PAL    B,  K

Audio subcarrier      :   DSB  ( double )

Audio input (mono) :   0.5 .... 1 V pp  στα 10 kΩ

Video input            :   Composite 1 VPP to 75 Ω

Output connector    :    F

Input connectors     :   Video - Audio    RCA

Level output           :   85 dB/μV   ( typ ) to 75 Ω

Channels  Selecting :   microswitches with base list

Signal generator     :   activated by pushbutton switch

Power supply         :   200 - 245 VAC   2 Watt

Dimensions            :    8.5 x 6 x 4.5 cm

Lifetime                 :   5 - 7 years of continuous operation at room temperature of 25 °C

Installation

Placed between the signal source such as a recorder or a digital receiver and TV.

Connect the antenna, to antenna input of the modulator, and the modulator output to the TV.

The modulator like all electronic devices must be ventilated !

Do not enclosed in boxes !

Selecting of channels

Select a free channel without interference in the band III eg  Ch 8. 

The channel selection is done by dipswitches based from a list of Mistral.

Channels list indicated to the left of the four switches.

1 means switch over.

0 means switch down.

So for the channel 8 the switches will be placed at 1011  1111.

If you place more than one modulators, connect them in series and release a channel gap between them eg k 5, 7.

See also the triple and quadruple modulators.

When there is a mast antenna amplifier or central amplifier, always modulators connects to the input of them, never to the exit.

There will be mixing with terrestrial channels.