Lesvos Electronic

AM DDS Transmitter 520 - 2000 KHZ 25W P.E.P.

Tuning Design: DDS Technology
Easily choose your frequency with Rotary Encoder
Easily choose your Step with Rotary Encoder
Frequency Range (Broadcast): 520 to 2000 KHz
RF Output Impedance: 50 Ohm
RF Output Power: 0 to 25 Watt PEP Adjustable
Frequency Stability: 10ppm
Harmonic Suppression: -50 dBc
Modulation Type: Amplitude Modulation (AM)
Maximum Modulation Level: 100%
Audio Response 50 Hz to 15 kHz
Audio Input Sensitivity: 400 mVolt for 100% Modulation
Show AUDIO LEVEL as bargraph on LCD
Show Temperature on LCD
Protection for Temperature
Power Supply Voltage: 15V and 48V

FM Stereo Transmitter 87,5 - 108 MHZ 500mW

Display frequency on LCD
Show Power ON - OFF on LCD
Change frequency with Push Button
Step 100ΚΗΖ
Adjustable power
Adjustable input for right channel
Adjustable input for left channel
Ability to connect external stereo coder
Ability to select Stereo or Mono from the Push Button
Harmonics filter <60 dBc
Frequency Stability +/- 200 HZ
Spurius <90 dBc
Channel separation 40 dB
Pilot modulation rate 15%
Limiter input level 13 dBV
LPF cut off frequency 15 kHz
Voltage operation 15V

AM DDS C-QUAM Stereo Transmitter 522 - 1998 KHZ 400mW P.E.P.

DDS Technology
DDS Signal Generator with Microcontroller for 25Hz
Easily choose your frequency with Rotary Encoder
Easily choose your Step with Rotary Encoder
Frequency Range (Broadcast): 522 to 1998 KHz
RF Output Impedance: 50 Ohm
RF Output Power: 0 to 400 mWatt PEP Adjustable
Frequency Step: 1 - 9 - 10 - 100 KHZ
Modulation Type: AM C-QUAM Stereo System
Show AUDIO LEVEL as bargraph on LCD
Maximum Modulation Level: 100%
Audio Frequency Response : 50 Hz to 15 KHz
Audio Input Sensitivity: 1 Volt for 100% Modulation
Power Supply Voltage: 12-15V

AM DDS Transmitter 520 - 2000 KHZ 2 W P.E.P.

Tuning Design: DDS Technology
Easily choose your frequency with Rotary Encoder
Easily choose your Step with Rotary Encoder
Frequency Range (Broadcast): 520 to 2000 KHz
RF Output Impedance: 50 Ohm
RF Output Power: 0 to 2 Watt PEP Adjustable
Frequency Stability: +/- 10 HZ
Modulation Type: Amplitude Modulation (AM)
Maximum Modulation Level: 100%
Audio Response 50 Hz to 15 kHz
Audio Input Sensitivity: 400mVolt for 100% Modulation
Show AUDIO LEVEL as bargraph on LCD
Show Temperature on LCD
Power Supply Voltage: DC 15 V

FM Transmitter 87,5 - 108 MHZ 500mW

Display frequency on LCD
Change frequency with Push Button
Step 50ΚΗΖ - 100ΚΗΖ - 200ΚΗΖ - 400ΚΗΖ - 1ΜΗΖ
Frequency Stability +/- 200 HZ
Spurius <90 dBc
Harmonics filter <60 dBc
Audio Response +/- 0.2 dB 20 Hz to 100 kHz
Pre-emphasis 50us
Adjustable power
Voltage operation 15V

AM DDS Transmitter 520 - 2000 KHZ 800 mW P.E.P.

Display frequency on LCD
Change frequency with Rotary Encoder
Step 1 - 9 - 10 - 100 ΚΗΖ
Frequency Stability +/- 10 HZ
Spurius <50 dBc
Harmonics filter <30 dBc
Audio Response 50 Hz to 15 kHz
Audio input 300 mVolt
Show AUDIO LEVEL as bargraph on LCD
Show Temperature on LCD
Adjustable power
Voltage operation 15V

AM DDS Transmitter 520 - 2000 KHZ 1 W P.E.P.

Tuning Design: DDS Technology
Easily choose your frequency with Rotary Encoder
Easily choose your Step with Rotary Encoder
Frequency Range (Broadcast): 520 to 2000 KHz
RF Output Impedance: 50 Ohm
RF Output Power: 0 to 1 Watt PEP Adjustable
Frequency Stability: 10ppm
Modulation Type: Amplitude Modulation (AM)
Maximum Modulation Level: 100%
Audio Response 50 Hz to 15 kHz
Audio Input Sensitivity: 500 mVolt for 100% Modulation
Show AUDIO LEVEL as bargraph on LCD
Show Temperature on LCD
Protection for Temperature
Power Supply Voltage: DC 15 V

Transmitter   UHF 1250 - 1750 MHZ   200mW

Display frequency on LCD
Show on LCD   LOCK - UNLOCK
Change frequency with Push Button
Step 100ΚΗΖ - 200ΚΗΖ - 400ΚΗΖ - 1ΜΗΖ - 10ΜΗΖ
Frequency Stability +/- 200 HZ
Spurius <90 dBc
Audio Response +/- 0.2 dB    20 Hz to 100 kHz
Voltage operation 15V

Transmitter   UHF 900 - 2000 MHZ   600mW

Display frequency on LCD
Show on LCD   LOCK - UNLOCK
Change frequency with Push Button
Step 100ΚΗΖ - 200ΚΗΖ - 400ΚΗΖ - 1ΜΗΖ- 10ΜΗΖ
Frequency Stability +/- 200 HZ
Spurius <90 dBc
Audio Response +/- 0.2 dB    20 Hz to 100 kHz Voltage operation 12-15V

AM  DDS Transmitter  520 - 2000 KHZ   800 mW P.E.P.
with Audio Compressor

Display frequency on LCD
Change frequency with Rotary Encoder
Step 1 - 9 - 10 - 100 ΚΗΖ
Frequency Stability +/- 10 HZ
Spurius <50 dBc
Harmonics filter <30 dBc
Audio Response  50 Hz to 15 kHz
Audio input  1 Volt
Show AUDIO LEVEL as bargraph on LCD
Show Temperature on LCD
Protection for Temperature
Adjustable power
Built in audio compressor with 4:1 Compression to keep volume constant and prevent over modulation.
Built in microphone preamplifier (included microphone).
Voltage operation 15V

AM DDS Transmitter 100 KHZ - 30 MHZ

Tuning Design: DDS Technology
Display frequency on LCD
Easily choose your frequency with Rotary Encoder
Easily choose your Step with Rotary Encoder
Frequency Step: 1 - 9 - 10 - 100 KHZ - 1 MHZ
Show Temperature on LCD
RF Output Impedance: 50 Ohm
Frequency Stability: 10ppm
Spurius <50 dBc
Power Output 102 dBuV/50 Ohm
Can be combined with
AMPLIFIER WITH MODULATOR 520 KHz - 2000 KHZ
for 1 W PEP output
Power Supply Voltage: DC 15 V

AM DDS Transmitter 520 - 2000 KHZ 50 mW P.E.P.

Display frequency on LCD
Change frequency with Rotary Encoder
Step 1 - 9 - 10 - 100 ΚΗΖ
Frequency Stability +/- 10 HZ
Spurius <50 dBc
Audio Response 50 Hz to 15 kHz
Audio input 500 mVolt
Show AUDIO LEVEL as bargraph on LCD
Show Temperature on LCD
Protection for Temperature
Voltage operation 15V

AM DDS Transmitter 520 - 2000 KHZ 800 mW P.E.P.
with Audio Compressor

AM DDS C-QUAM Stereo Transmitter 522 - 1998 KHZ 6W P.E.P.

DDS Technology
DDS Signal Generator with Microcontroller for 25Hz
Easily choose the frequency with Rotary Encoder
Easily choose the Step with Rotary Encoder
Easily adjust the RF Power with Rotary Encoder
Frequency Step: 1 - 9 - 10 - 100 KHZ
Frequency Range (Broadcast): 522 to 1998 KHz
RF Output Impedance: 50 Ohm
RF Output Power: 0 to 6 Watt PEP Adjustable
Push-Pull Class AB Output Amplifier
PTT for On - Off the RF Power
Modulation Type: AM C-QUAM Stereo System
Show AUDIO LEVEL as bargraph on LCD
Maximum Modulation Level: 100%
Audio Frequency Response : 50 Hz to 15 KHz
Audio Input Sensitivity: 500 mVolt for 100% Modulation
Power Supply Voltage: 12-15V