Tugicom AMP25 – 25W RF User Manual

TugicomRFDesign

AMP25– 25WRF

ierAmplif

UserManual

AMP25–25WRFAmplifier‐UserManual

Tugicom – www.tugicom.com [e-mail]-

Telefax: [phone] P.O. BOX 574, Netanya Israel

AMP20W 20W RF AMPLIFIER

AMP20W is a cost effective Plug & Play broadband 20W RF amplifier designed to offer excellent
performance, clean spectrum and 24/7 operation for many year s

Features

RF Output Power: Minimum 20Watts (25W Typical)
RF Input Power: 1 Watts
Output & Input Impedance: 50 Ohms
Frequency Range: 87.0MHz -108MHz
Low Pass Filter onboard for clean spectrum

Please read all manual, before operating !!

This amplifier is very easy to operate, it is powered by a DC power supply of 24V/2A and will output
minimum 20W from a 1W input in the FM broadcast band (87.5-108Mhz), This manual will help you
connecting, operating and understanding all information for reliable operation.

STEP 1 - CONNECTING

Connection instructions for AMP20W

1. Connect the coax cable from the 1W exciter/transmitter to the "RF INPUT" lead pad and the

shield to the GND.

2. Connect the coax cable of the Antenna to the "RF OUPUT" lead pad and the shield to the

GND.

3. connect the 24-28V DC Minimum power supply to the POWER SUPPLY connection

marked with DC in

AMP25–25WRFAmplifier‐UserManual

Tugicom – www.tugicom.com

STEP 2 - OPERATING

You must verify that an antenna or a 50ohm dummy load is connected to the output, a missing
antenna or mismatched antenna could damage the output transistor which is NOT included in
warranty!

1. Connect the antenna or dummy load to the RF output.

2. Power up the power supply.

3. Turn on the 1W exciter.

4. In AMP20WA

In this point, a 20W should be driven to the antenna, If you have Watt meter it will be the best way
to test the output power, if a watt meter is not available, you can test the Current from the power
supply a consumption of 1.5A-2A is the normal current and should output 20W.

Antenna

The antenna is one of the major elements which effect on the range of your broadcast.
You will need to pay attention to the coaxial cable which will be described later.
The Best position for a FM broadcast antenna is the highest place which from him you have line sight
as far as possible without any interference from other buildings, mountains and other high object which
may interfere your broadcast signal.
Always remember that the critical parameter is not whether you broadcast 1W or 5W, but whether you
are 10 or 15 meters above ground.
The best antenna for this transmitter will be a 50 ohm antenna which was matched exactly to the
frequency you will need to use, but the price of those antennas may be high.

For a low cost antenna, we recommend standard "dipole" FM antenna from any radio equipment which
looks like 2 radiators in calculate length 75/freq(MHz), example: At frequency of 100MHz, the length
of each radiator will be 0.75m.
Many antenna designs are also available on the internet.
If you need a simple temporary antenna, connect a 75 cm wire to the center of the RF output connector,
not ideal but will do the job to broadcast locally. Notice: you must keep distance between the
temporary antenna and audio cables & devices.

CAUTION: DO NOT TOUCH CENTER LEAD on ANTENNA OUTPUT when transmitter is turned

on, it may cause SERIOUS RF BURNS!

That’s all, have fun transmitting and always remember not to disturb other stations, it is against the
law.

Thank you for purchasing one of our products.
Tugicom RF Design.

Come visit our website for updates and new products: www.tugicom.com

Please check the rules in your country before operating radio equipment.

[e-mail]-

Telefax: [phone] P.O. BOX 574, Netanya Israel