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I. INTRODUCTION
MISSION
Radyo Sang Masa’s mission is to provide trusted source of information and up to date news regarding the lives of a true born Filipino. The station aims to take part with the regions latest happenings and thus to provide unbiased news locally and even about the nations trending topics. It also aims to open up the eyes of its listeners when it comes to the most sensitive news which may happen to affect their everyday lives. The station will be all about cultures in which it will be delivered in sustainable ways that meet their needs while strengthening the civic and cultural life of the communities we serve. Finally, this station aims to provide never ending entertainment to its avid listeners. With its lively broadcasters and DJ’s, Radyo Sang Masa will be your one of a kind radio station.
VISION
Radyo Sang Masa’s vision is to be valued, to inspire its listeners to look at life in a different point of view and to be the region’s leading information provider. The station envisions to educate, entertain, and empower its audience in order to create a better and more sustainable future for the province.
3 RADYO SANG MASA Daily Programs
Note: Commercials may occur in between programs.
TIME PROGRAM 6:00 am Morning Prayer 6:05 am Pambansang Awit 6:05 am – 7:00 am Morning News 7:01 am – 7:30 am Entertainment News 7:31 am – 8:00 am Commercials
8:01 am – 11:00 am Lakbay Aral – “Pagtuklas” 11:01 am – 12:00 pm Regions Trending Topics
12:01 pm – 12:30 pm Commercials
12:31 pm – 3:00 pm Dramaserye
3:01 pm – 6:00 pm Afternoon Jamming
6:01 pm – 7:30 pm Evening News (Local)
7:31 pm – 8:30 pm Evening News (Nationwide & Worldwide)
8:31 pm – 9:30 pm Evening Drama
9:31 pm – 12:00 pm Evening Jamming
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Description
of the
Radio
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II. DESCRIPTION OF THE RADIO STATION
A. Frequency Selection
Frequency Name Company Format Call Sign Power Covered Location 630 kHz Bombo Radyo
Bacolod
Bombo Radyo
Philippines News DYWB 10 KW Bacolod
684 kHz Aksyon Radyo
Bacolod
Pacific Broadcasting
Systems News DYEZ 10 KW Bacolod
747 kHz RMN Bacolod Radio Mindanao
Network News DYHB 10 KW Bacolod
900 kHz Radyo Sang
Masa ENEC5A Network
News and
Public Affairs DYDZ 1kW Bacolod
1035 kHz Abyan Radyo Radio Corporation
of the Philippines News DYRL 10 KW Bacolod
1080 kHz DZRH Bacolod
Manila Broadcasting Company
News and
Public Affairs DYBH 5 KW Bacolod
1143 kHz
Veritas 1143 Radyo Totoo Bacolod
Catholic Media
Network News DYAF 5 KW Bacolod
1179 kHz Super Radyo
DYSB Bacolod GMA Network News DYSB 1 KW Bacolod
1404 kHz Radyo Ronda
DYKB
Radio Philippines Network / Solar Television Network
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B. Frequency Map
Frequency Map of the AM Station, DYDZ showing the upper and the lower sideband and its corresponding frequencies.
C. Frequency Spectrum
Frequency Spectrum showing the DYDZ AM Station operating with a frequency of 900 kHz and its two neighboring AM Stations namely DYHB RMN Bacolod with an operating frequency of 747 kHz and DYRL Abyan Radyo with an operating frequency of 1035 kHz.
fc = 900 kHz flsb= 895 kHz fusb= 905 kHz fm = 5 kHz fm = 5 kHz Bandwidth = 10 kHz fc = 747 kHz fusb = 752 kHz flsb= 742 kHz fm= 5 kHz fm= 5 kHz Bandwidth = 10 kHz fc = 900 kHz fusb = 905 kHz flsb= 895 kHz fm= 5 kHz fm= 5 kHz Bandwidth = 10 kHz fc = 1035 kHz fusb = 1040 kHz flsb= 1030 kHz fm= 5 kHz fm= 5 kHz Bandwidth = 10 kHz
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D. Vicinity Map
Figure 1. Map of the AM Station
Figure 2. Map of the AM Transmitter
AM Transmitter
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E. Antenna and Studio Location
Location: Rm. 4, 2F Victorina Arcade, Rizal Street, Bacolod City Latitude: 10°40'10.11"N
Longitude: 122°56'53.38"E
Location: Reclamation Area, Bacolod City Latitude: 10°40'15.74"N
Longitude: 122°56'30.07"E
Figure 3. AM Studio Location
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Studio Plan /
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III. STUDIO PLAN/DESIGN A. Floor plan
Figure 5. Station Floor Plan
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B. Studio Equipments and Specifications
Yamaha mixing console
The fantastic Yamaha MG mixers are giving Mackie, Spirit and Behringer a run for their money.
"We have a winner" and "reasonably priced, effects laden, mixer solution" says Music Mart magazine - Aug 03.
Specifications:
Frequency Response: 20Hz-20kHz THD: <0.1% @ +14dB 600 Ohms Hum & Noise 20Hz-20kHz: -128dB Power requirement: 230v AC 50Hz Dimensions: 318 x 418 x 104mm Weight: 5.0kg nett
The MG12/4 has now been superceded by the MG124C (with compressors). Although the MG12/4 is now obsolete, we can still supply the original Yamaha spare Power Supply Unit PA20.
12 Input Channels
Four mono microphone/line inputs and four stereo line inputs, two of which offer mono microphone input capability.
Six Low-noise, High-precision Mic Preamps
Six high-performance head amplifiers that will bring out the best in any dynamic or condenser microphone.
Phantom Power
All six of the MG12/4’s high-performance mic preamps feature switchable phantom power for studio condenser microphones. A single switch turns phantom power on or off for all six channels.
Insert I/O
All mono input channels feature insert I/O patch points so you can add extra signal-processing to the channels as required.
Four Buses (Stereo and Group)
In addition to the main stereo bus, the MG12/4 features a stereo group bus and outputs that can be used for convenient channel grouping.
3-band Channel EQ & HPF
Smooth, "musical-response" 3-band equalizers on all input channels. All mono microphone input channels also feature a switchable high-pass filter that can be used to cut out unwanted low-frequency noise.
Two Aux Sends & Stereo Aux Return
Two auxiliary sends on each channel – one post-fader and one switchable for pre- or post-fader operation – provide plenty of flexibility for external signal processing and monitoring. A stereo auxiliary return is also provided.
Illuminated Switches
Illuminated ON (ST buss assign), PFL (Pre-Fader Listen), and phantom-power switches provide easy visual confirmation of critical console settings.
Rack Mount Adaptors Included
Use your MG mixer on a desktop or mounted in a rack – the rack mount adaptors are provided.
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RMServer : Remote Monitoring Server
Specification:
Control
Logic Input Phoenix 6-pin male connector, two optically isolated inputs for receiving contact closures for external muting
Logic Output Phoenix 6-pin male connector, reports relay closures (and openings) for external muting and/or fault reports
RMS FT-10 Network
Connections Equipped with two-conductor twisted-pair network, reporting all operating parameters of amplifiers to system operator’s host computer running Compass Software (50 Node Maximum). Data Speed is 78Kbps serial bus
Ethernet Network RJ-45 port for network connection and control of on-board web server from a Mac or Windows-based computer. Full bidirectional communication with Meyer Sound’s Compass control software within a client-server architecture. Supports IPv4 and IPv6 simultaneously. IEEE 802.1, 802.3 Compliant. One MAC address
Mounting Removable Feet Included
Optional Rack Mount Kit Available Optional Wall Mount Kit Available
Network/Control
Front Panel Illuminated LED Indicators for fault, client connection, RMS FT-10 receive, Ethernet, and power
Network RJ-45 port for network connection and control of on-board web server from a Mac or Windows-based computer. Full bidirectional communication with Meyer Sound’s Compass control software within a client-server architecture.
Protocols IEEE Std 802.3 ( 100BASE-TX ) RFC 791 (IPv4)
RFC 6434 (IPv6 Node Requirements)
RFC 3927 (Dynamic Configuration of IPv4 Link-Local Addresses) RFC 6763 (DNS-Based Service Discovery)
RFC 2616 (HTTP/1.1)
IEEE Std 1722.1-2013 (ADP and AECP AEM)
Software Full bidirectional communication with Meyer Sound’s Compass control software within a client-server architecture
AC Power
Connector powerCON 20
Operating Voltage Range 100–240 V AC, 50/60 Hz, 30W Max
Current Draw 0.2A rms (115 V AC); 0.13 A rms (230 V AC); 0.3 A rms (100 V AC)
Physical
Dimensions 1-space rack 1/2 width
8.50” w x 1.73” h (1.85” h with feet) x 7.23” d (215.9 mm x 44 mm [46.9mm with feet] x 183.6 mm)
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AUDIO-TEVHNICA ATH-M50
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SPECIFICATIONS AUDIO TO CLEAN FEED OUTPUT
Impedance : 10k Ohm, electronically balanced Common mode rejection : >30dB
Maximum input level : +26dBu Nominal input level : +4 dBu
Frequency response : 20Hz – 15kHz Connectors : STEREO JACK TO MIC INPUT
Impedance : < 50 Ohm, electronically balanced Common mode rejection : >30dB
Maximum output level : -20dBu Nominal output level : -30dBu
Bandwidth to telephone line : 250Hz – 4kHz, -3dB ref 1 kHz Telephone line impedance : Nominally 600 ohm
Telephone line impedance range : 300 ohm to 1500 ohm Connectors : STEREO JACK
GENERAL
Distortion : Less than 0.1% (0 dBu out) Power supply : none (passive)
Power consumption : none
Dimensions : 1 HE front panel: 482 x 44 mm
: Frame: 240 x 44 x 175 mm (width x height x depth) Weight : 1.5 kg net including packing
PHONE CONNECTIONS (POT) PHONE : RJ-11 phone connectors WALL (line) : RJ-11 phone connectors
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C. Block diagram
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Transmitter
Layout
and
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IV. TRANSMITTER LAYOUT AND CONNECTIVITY
Connectivity
Studio
Generator
STL
Transmitter
STL Receiver
Generator
AM Transmitter
AM Antenna
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A. STL block diagram
Studio to Transmitter Link Block Diagram
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B. System block diagram
System Block Diagram
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Figure 10.STL Transmitter SR04A/SR04B Tray Block Diagram
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Figure 12. STL Receiver (A & B) Block Diagram
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C. Equipment Specifications
Equipment Specifications
NICOM MT/MR Studio to Transmitter Link TX/RX Pair
Model: TSL 910 STL Transmitter
Features: Frequency Ranges: 940 to 960 MHz - 200 to 240 MHz - 300 to 330 MHz +other frequencies upon request;
Output Impedance & Connector: 50 ohm type 'N' female; Harmonic Frequencies Level (ref. to carrier): < -65 dB; Spurious Frequencies Level (ref. to carrier): < -80 dB; Input Impedance: 600 ohms or greater;
Input Level: -6 dBm to +10 dBm nominal for +/-75 Khz deviation adj.
Model: RSL 900 STL Receiver
Features:
Frequency Ranges: 940 to 960 MHz 200 to 240 MHz - 300 to 330 MHz + other frequencies upon request;
Input Impedance & Connector: 50 ohm type 'N' female; Audio Frequency Output: 0 dBm at 600 ohms +/- 6dB adj.; IF Output: 0dBm at 10.7MHz / 50 ohms;
De-emphasis: 50 / 75us;
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NICOM RADIO STL ANTENNA
Model: RKB 14
This antenna was created to be used for STL purpose. It is very light and easy to use. Due to its construction, this antenna is not suggested to be used in areas with severe weather. It comes with N type connector.
TECHNICAL SPECIFICATIONS
Antenna type 14 element directional antenna Frequency range 940 - 960 MHz
Bandwidth 20 MHz Impedance 50 ohms Connectors N type
Power rating 20 watts max. VSWR < 1.2
Polarization vertical or horizontal
Gain 12.3 dB (referred to half-wave dipole) H plane 48 degrees
V plane 60 degrees Front-to-back ratio 22 dB min.
Lightning protection all parts grounded Max wind velocity 100 mph (165 km/h) Wind load 35 Lbs (16 kg)
Materials (external) Aluminum Mounting from 1" to 3" Weight 3 Lbs ( 1.4 kg)
Dimensions 56"×7"×3" (1422×178×76 mm) Packing 57"×8"×4" (1448×203×102 mm)
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10 KW SOLID STATE AM TRANSMITTER
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Model: NAUTEL AMPFET ND10
TECHNICAL SPECIFICATIONS
Configuration: 8-1.25 kW Power Amplifier/Modulator subsystem modules (each with integral cooling fan). Main and Standby exciter sections with Audio and RF Drivers
Power Output: (Rated) 10,000 watts (Capable) 11,000 watts
Five preset power levels between 1,000 and 11,000 watts are selectable via LOCAL or REMOTE control. Output level stabilized against ac supply voltage variation
RF Frequency Range: 531 kHz to 1620 kHz, prefitted to one frequency as ordered RF Terminating Impedance: 50 ohms unbalanced, 1-5/8 inch EIA O/P Flange Type of Modulator: NAUTEL Pulse Duration Modulator
Audio Frequency Response: ±0.5 dB, dc –10,000 Hz Audio input low pass filter selectable between Butterworth and Bessel response
Square Wave Overshoot: 2% at 400 Hz (typical with Bessel filter active) Square Wave Tilt: 3% or less at 40 Hz
Audio Harmonic Distortion: Better than 1% (THD) at 95% modulation 30-10,000 Hz, 2.5 kW to 10 kW, 1.5% (THD) at 950% modulation, 10,000 Hz, I kW to 2.5 kW (Reduced antenna
bandwidth may degrade specification)
Audio Intermodulation: 1 % or less at 10 kW 60/7000 Hz 4:1 ratio Distortion: SMPTE Standards at 85% modulation
AM Stereo (RF Phase Shift): Incidental Quadrature Modulation (IQM) 36 dB or better (40 dB typical) below 95% modulation 30-10,000
Modulation Capability: 125% positive peak modulation capability to 11,000 watts Carrier Shift: Not exceeding 1%
RF Harmonics: 80 dB or more below 10 kW output Spurious Outputs: 80 dB or more below 10 kW output
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Frequency Stability: ±5 Hz or ±5 ppm whichever is greater over temperature range
Audio Input: 600 ohms active balanced + 10 dBm nominal Adjustable 0 to +12 dBm for 100% modulation
Model: NAUTEL AMPFET ND10
Power Input: 198-242V 50/60 Hz three-phase 3 or 4 wire 385-465V 50/60 Hz three-phase 3 or 4 wire. Other voltages available
Permissible Power
Supply Variation: ± 5% voltage ± 5% frequency
Power Consumption: 13.3 kW at 10 kW, 0% modulation, 20 kW at 10 kW, 100% continuous sine wave modulation
Power Factor: 0.98 typical
Overall Efficiency: Better than 75% Metering: Forward Output Power
Reflected Output Power
DC Input Current and Voltage to Power Blocks, DC Current Meters, each 1.25 kW Power Amplifier/Modulator Subsystem
Remote Control: Transmitter, ON/OFF
Selection of Exciter A or B
Power Level selection 1, 2, 3, 4, 5 Power Trim
Remote Monitoring: Forward Power Output Reflected Power Output Status of Critical Parameters
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Ambient Temperature: -10° to 50°C (derate 3°C per 500m/2° per 1000 ft. above sea level) Humidity Range: 0-95%
Altitude: 0-4000m (0-13,000 ft.)
Size: 114cm x 61 cm x 183cm (45. in. wide x 24 in. deep x 72 in. high) .68 sqm (7.5 sq. ft.) Floor Weight: 530 kg (1165 lbs.)
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Transmission
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V. TRANSMISSION LINE
Technical specifications for 1/2 inch Cellflex: Structure
- Impedance: 50 ohms
- Inner conductor: Copper wire 4.9mm
- Dielectric: Low Loss foam polyethylene 11.6mm - Outer conductor: Coffugated copper tube
13.7mm
- Jacket: Polyethylene, black 16mm
Mechanical properties:
- Weight: 0.35Kg/m
- Minimum bending radius, single bending: 70mm - Minimum bending area, repeated bending: 200mm - Max tensile force: 1470N
- Recommended temp. Range: -40C to +60C
- Recommended temp. Range during installation: -25C to +60C
Electrical properties:
- Characteristic impedance: 50 +-1 ohms - Velocity factor: 88%
- Capacity: 76pF/m - Max operating frequency: 3000MHz
- Cut-off frequency: 10200 MHz - Peak power rating: 25.6KW
- Peak RF voltage rating: 1.6KV
- DC-resistance inner conductor: 0.97ohm/Km - DC-resistance outer conductor: 1.9ohm/Km
Attenuation: - 10MHz: 0.67 db/100m - 30MHz: 1.17 db/100m - 88MHz: 2.02 db/100m - 100MHz: 2.16 db/100m - 108MHz: 2.25 db/100m - 200MHz: 3.08 db/100m - 900MHz: 6.8 db/100m - 1500MHz: 9.0 db/100m - 2300MHz: 11.4 db/100m - 3000MHz: 13.2 db/100m
Power handling (1/2inch Cellflex):
- 30MHz: 7.27KW - 88MHz: 4.2KW
- 108MHz: 3.94KW - 150MHz: 3.2KW
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Antenna
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VI. ANTENNA PLAN
A.) Antenna characteristics, input impedance, polarity, height in wavelength, construction type Radyo Sang Masa will be using an inverted vee antenna configuration due to the limitations of space. An inverted vee antenna is a type of antenna wherein the two dipoles of the sides are perpendicular to each other instead of parallel. It is used in areas with limited space because of its properties that are able to reduce ground foot print of the antenna without compromising performance. The gain of an inverted vee is similar to that of a dipole at the same elevation because most of the radiation is from the high-current portion of the antenna. Antenna modeling software bears this our for free-space models, predicting maximum gain of 2.15 dBi for the dipole and 1.9 dBi for the inverted vee. When viewed from the side, the antenna looks like an English letter “V” turned upside down, hence the name inverted vee. These antennas are commonly used by amateur radio enthusiasts or stations, and on sailing vessels requiring better HF performance. Typically, the inverted vee antenna requires only a single, tall support at the center and the ends can be insulated and secured to anchors at or near ground level. This arrangement are very advantageous when in a limited space.
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Figure 15. Inverted Vee Antenna Configuration Pattern
Antenna Height/Radiator length computation:
λ = 𝑓𝑐 = 3×10
8𝑚/𝑠𝑒𝑐
900×103𝐻𝑧 = 333.333 meters
Radiator Length, Ra = 𝜆4 = 333.333𝑚4 = 83.333 meters = 293.402 foot
35 VII. REFERENCES http://www.gbaudio.co.uk/data/yamaha/mg12.htm http://www.meyersound.com/sites/default/files/RMServer_ds.pdf http://eu.audio-technica.com/en/products/product.asp?catID=5&subID=39&prodID=266 http://www.soundblaster.com/products/sound-blaster-zxr.aspx#specs
Studio Transmitter Link, Published by: BADRAJPUT on Dec 05, 2010, Copyright: Attribution Non-commercial
http://www.nicomusa.com/#!rkb-14/c1139 http://www.trcorp.com/rdstl.html
