PNP Memorandum Circular No. 011-13 Test and Evaluation (T&E) Procedures and Guidelines for Very High Frequency (VHF) Fixed and Mobile Radio Equipment (2024)

August 23, 2013

PNP MEMORANDUM CIRCULAR NO. 011-13

1.References

a.47 CFR Ch.1 Part 90 — Private Land Mobile Radio Services dtd October 1, 2010;

b.MIL-STD-105E — Sampling Procedures and Tables for Inspection by Attributes dtd May 10, 1989;

c.Dictionary of Electronics, 3rd Edition dtd 1997 by S.W. Amos and R.S. Amos;

d.ETSI EN 300 296-1 V1.4.1 — Electromagnetic Compatibility and Radio Spectrum Matters (ERM); Land Mobile Service; Radio Equipment Using Integral Antennas Intended Primarily for Analogue Speech; Part 1: Technical Characteristics and Methods of Measurement dtd July 2010;

e.Manual of Procedures for the Procurement of Goods and Services, Vol. 2;

f.Memorandum Circular Number DRD-2004-01 — Test and Evaluation (T & E) Procedures for PNP Multi-Trunked Radio System (MTRS) and other Similar Equipment;

g.MIL-STD-449D — Radio Frequency Spectrum Characteristics Measurement of dtd February 22, 1973;

h.NIJ Standard 0201.01 — Fixed and Base Station FM Transmitters dtd September 1987;

i.NIJ Standard 0206.01 — Fixed and Base Station FM Receivers dtd July 1988;

j.NIJ Standard 0209.01 — Personal FM Transceivers dtd September 1985;

k.NIJ Standard 0210.00 — Mobile FM Transceivers dtd May 1986;

l.NIJ Standard 0211.01 — Rechargeable Batteries for Personal/Portable Transceivers dtd September 1995;

m.NILECJ-STD-0213.00 — FM Repeater Systems dtd November 1977; and

n.Philippine and International Radio Laws and Regulations, 8th Revised Edition dtd 1990 by Pablo R. Payumo. EaScHT

2.Purpose

a.To establish test and evaluation procedures for the post qualification and acceptance tests of Very High Frequency (VHF) fixed and mobile radio equipment; and

b.To ensure compliance to NAPOLCOM Approved Standard Specifications of the VHF conventional and tactical radio communications system and its accessories subject for procurement, evaluation, and/or acceptance by the Philippine National Police (PNP).

3.Scope

This document covers all conventional and tactical fixed and mobile radio equipment operating in the Very High Frequency (VHF) band that will be procured or used by the Philippine National Police.

4.Definitions

a.Acceptance Quality Level (AQL). A designated value of percent defective (or defects per hundred units) for which lots will be accepted most of the time by the sampling procedure being used.

b.Adjacent Channel Selectivity. A receiver's ability to process a desired signal while rejecting a strong signal in an adjacent frequency channel.

c.Audio Output Power. The audio frequency power dissipated in a load across the receiver output terminals of an unsquelched receiver having a modulated RF signal input.

d.Battery Life. The length of time required for a fully charged battery to discharge to a specified end-point voltage under specified conditions.

e.Base station. A station at a specified site authorized to communicate with mobile stations.

f.Carrier frequency. The frequency of an unmodulated electromagnetic wave.

g.Conventional radio system. A radio system wherein radios operate on fixed channels and users are permanently assigned a fixed frequency or a set of frequencies.

h.Effective radiated power (ERP). The power in the direction of maximum field strength under specific conditions of measurement, in the absence of modulation.

i.Frequency Deviation. The difference between the instantaneous frequency of the modulated carrier and the unmodulated carrier.

j.Frequency Error (of a transmitter). The difference between the measured carrier frequency in the absence of modulation and the nominal frequency of the transmitter.

k.Frequency Modulation (FM). Modulation in which the instantaneous frequency of a wave differs from its carrier frequency by an amount proportional to the instantaneous amplitude of the modulating signal.

l.Frequency Stability. The ability of an oscillator to maintain a desired frequency; usually expressed as percent deviation from the assigned frequency value.

m.Mobile radio system. A regularly interacting group of base, mobile and associated control and fixed relay stations intended to provide land mobile radio communications service over a single area of operation. It denotes a wireless communications system intended for use by terrestrial users in vehicles (mobiles) or on foot (portables).

n.Mobile station. A station in the mobile service intended to be used while in motion or during halts at unspecified points. This includes hand carried transmitters. EHTADa

o.Nominal Value. The numerical value of a device characteristic as specified by the manufacturer.

p.Post-qualification. The stage where the bidder with the Lowest Calculated Bid, in the case of Goods and Infrastructure Projects, or the Highest Rated Bid, in the case of Consulting Services, undergoes verification and validation whether he has passed all the requirements and conditions as specified in the Bidding Documents.

q.RF Power Output. The actual amount of power (in watts) of radio frequency (RF) energy that a transmitter produces as its output.

r.Rated Capacity. The capacity of the battery in ampere-hours or milliampere-hours usually at typical transceiver discharge rates.

s.Receiver. That part of a communications equipment designed to respond to electromagnetic energy.

t.Repeater. A combination of apparatus for receiving RF communication signals and automatically retransmitting corresponding signals on different frequencies.

u.Sample. Consists of one or more units of product drawn from a lot or batch, the units of the sample being selected at random without regard to their quality.

v.Sample Size. The number of units of product in the sample.

w.Sampling Plan. Indicates the number of units of product from each lot or batch which are to be inspected and the criteria for determining the acceptability of the lot or batch.

x.Selectivity. A measure of the performance of a radio receiver to respond only to the radio signal it is tuned to (such as a radio station) and rejects other signals nearby in frequency, such as another broadcast on an adjacent channel. It is usually measured as a ratio in decibels (dBs), comparing the signal strength received against that of a similar signal on another frequency.

y.Sensitivity. The smallest input signal which gives a specified output or signal-to-noise ratio. In a radio receiver, it is the smallest RF input which gives a specified signal-to-noise ratio at the output, the modulation frequency and depth of modulation being specified.

z.SINAD Ratio. The ratio, expressed in decibels, of (1) signal plus noise plus distortion to (2) noise plus distortion produced at the output of a receiver; from Signal Noise and Distortion Ratio. It is a measure of the quality of a signal from a communications device. Unlike SNR, a SINAD reading can never be less than 1.

aa.SINAD Sensitivity. The minimum modulated RF signal input level required to produce a specified SINAD ratio at a specified audio output power level.

bb.Spurious Response. Any undesired response to electromagnetic energy.

cc.Squelch. A circuit that acts to suppress the audio (or video) output of a receiver in the absence of a sufficiently strong desired input signal.

dd.Standby Mode. The condition when a transceiver is energized but is not transmitting or receiving.

ee.Transceiver. An inherent combination of a radio transmitter and receiver.

ff.Transmitter. That part of a communications equipment capable of emitting radio frequency waves or energy intended for transmission of signals, messages or intelligence.

gg.Technical Specifications. It refers to the physical description of the goods or services, as well as the Procuring Entity's requirements in terms of the functional, performance, environmental interface and design standard requirements to be met by the goods to be manufactured or supplied, or the services to be rendered. HScCEa

hh.Very High Frequency (VHF) Band. Band of frequencies between 30 to 300 MHz with wavelengths ranging from one (1) to ten (10) meters.

5.Organization

a.Post Qualification of Items

1)Head, TWG on Communication;

2)DRD Representative;

3)CES Representative;

4)DL Representative;

5)DC Management Representative;

6)End-user Representative;

7)NAPOLCOM Representative; and

8)COA Representative.

b.Acceptance Test

1)DRD Technical Team;

2)DL Representative;

3)DC Management Representative;

4)CES Representative;

5)LSS Representative;

6)End-user Representative;

7)NAPOLCOM Representative; and

8)COA Representative.

6.Test Methods

a.Guidelines

1)Take note of the environmental conditions and the presence of physical obstructions such as trees, hills, mountains and tall buildings in the area where the tests will be conducted;

2)Use functional parameters and operational limits specified in the NAPOLCOM Approved Standard Specifications applicable to the equipment under test;

3)The battery of the handheld radio to be inspected must be fully charged prior to the conduct of the adverse and functional tests; and

4)Mobile radios must have sufficient supply of power from the car battery during the conduct of the test.

b.Standard Test Conditions

Allow all equipment to warm up until the system has achieved sufficient stability to perform the measurement. Unless otherwise specified, perform all measurements under standard test conditions.

1)Power Source. Sufficient power shall be available to operate the equipment under test at its rated voltage, current, power and frequency;

2)Standard Temperature. Standard ambient temperature shall be between 20 and 30ºC (68 and 86ºF); and IDcTEA

3)Standard Relative Humidity. Standard ambient relative humidity shall be between 10 and 85 percent.

c.Test Equipment

1.Digital Communications Analyzer;

2.RF Wattmeter;

3.Frequency Counter;

4.Signal Generator, RF and AF signal capable of emitting 0.1 microvolt to 0.5 volt across all frequency range;

5.Regulated Power Supply of the equipment under test;

6.Dummy Load, 50 ohms; and

7.Analog or Digital Multimeter/Multitester (VOM).

d.Standard Test Site

The standard signal propagation test site for post qualification/acceptance test shall be in a flat terrain free from interference in the form of reflecting objects such as large metal objects, electrical lines, trees and buildings. For communications equipment that was already installed such as base radios that is located in an area where there are obstruction(s), the reflecting objects should be noted in the report. Samples of test sites are as follows:

1)Rural flat terrain with trees

2)Rural hilly terrain with few trees

3)Urban flat terrain

4)Urban hilly terrain

Note:Pictures are for presentation purposes only and may not exactly resemble the actual test site.

e.Sampling Plan

Sample size is based on MIL-STD-105E and is dependent on the total quantity delivered for each item.

1.Random Sampling. The corresponding sample size for the total number delivered for each item is shown in Table 1.

2.Planning for Sampling.

a)Sample sizes are designated by code letters. Table 1 shall be used to determine the applicable code letter for the particular quantity delivered and the prescribed inspection level. Unless otherwise specified, inspection Level II will be used; and

b)The Acceptance Quality Limit (AQL) and the code letter shall be used to obtain the sampling plan from Table 2. The AQL to be used for major defects is 6.5 while for minor defects the AQL to be used is 25. cSHIaA

Table 1.Sample Size Code Letters

Table 2.Double Sampling Plan

f.General Examination

1)Purpose. To conduct visual inspection of the equipment prior to the conduct of functional test.

2)Procedures.

a)Conduct visual inspection on the configuration of all delivered equipment/installed system;

b)Check/verify on the commonality of accessories including microphone, antenna, battery pack, and others;

c)Check the physical interchangeability of modules, sub-assemblies, cabinets or casing;

d)Check the antenna base position flexibility;

e)Check the ease of operation of knobs and switches;

f)Measure the weight (if applicable); and

g)Measure the outside dimensions (if applicable).

3)Standard.

a)Noncompliance with the visual inspection in accordance with the procedures stated above, functional testing shall not be conducted; and

b)Functional testing based on NAPOLCOM Approved Standard Specifications.

g.Operational Test. Conduct of functional test based on NAPOLCOM Approved Standard Specifications.

1)Power Output Test (Please see Annex A)

2)Frequency Error Test (Please see Annex B)

3)Frequency Stability Test (Please see Annex C)

4)Frequency Deviation Test (Please see Annex D)

5)Audio Output Power Test (Please see Annex E)

6)Sensitivity Test (Please see Annex F) CHcTIA

7)Adjacent Channel Selectivity Test (Please see Annex G)

8)Audio Distortion Test (Please see Annex H)

9)Repeater Tests (Please see Annex I)

10)Operating Range Test (Please see Annex J)

11)Adverse Condition/Durability Tests (Please see Annex K)

12)Scrambler/Encryption Tests (Please see Annex L)

13)Battery Life Test (Please see Annex M)

7.Rescission

All other Test Procedures, Guidelines or SOPs contrary to or inconsistent with the provisions of this test procedure are hereby rescinded, modified or amended accordingly.

8.Effectivity

This Memorandum Circular shall take effect immediately upon approval.

(SGD.) ALAN LA MADRID PURISIMAPolice Director General Chief, Philippine National Police

ANNEX A

Power Output Test

1.Purpose. To determine the power output at several frequencies spaced throughout the frequency coverage of transmitters.

2.Equipment and Materials Needed.

a.Digital communications analyzer;

b.Regulated Power Supply with Variable DC Output (9-15 VDC);

c.AF Signal Generator;

d.RF Wattmeter; and

e.Dummy load (at least 100 watt resistive).

3.Measurement setup. The test apparatus shall be setup as shown in Figure 1.

Figure 1. Block diagram for power output measurement

4.Procedures.

a.Tune the transmitter to the lowest operating frequency;

b.Operate the transmitter with standard 1-kHz modulating frequency;

c.Measure the power output using a wattmeter at the standard rated voltage of the item under test;

d.Measure the power output using a wattmeter at 10 percent below the standard rated voltage of the item under test;

e.Measure the power output using a wattmeter at 10 percent above the standard rated voltage of the item under test;

f.Document the test results in the following table:

g.Tune the transmitter to the middle operating frequency; cCSHET

h.Repeat procedures b to f;

i.Tune the transmitter to the highest operating frequency; and

j.Repeat procedures b to f. Succeeding tests will not be conducted if the measured power output is 10 percent lower than the standard value.

5.Standard. NAPOLCOM Approved Standard Specifications applicable to the item under test.

ANNEX B

Frequency Error Test

1.Purpose. To determine the difference between the unmodulated carrier frequency and the nominal frequency of the transmitter.

2.Equipment and Materials Needed.

a.Digital Communications Analyzer;

b.Frequency Meter; and

c.Dummy load (at least 100 watt resistive).

3.Measurement Setup. The test apparatus shall be setup as shown in Figure 2.

Figure 2. Block diagram for frequency error measurement.

4.Procedures.

a.Tune the transmitter to the lowest operating frequency;

b.Measure the carrier frequency in the absence of modulation under normal test conditions;

c.Document the test result in the table below:

d.Tune the transmitter to the middle operating frequency;

e.Repeat procedures b to c;

f.Tune the transmitter to the highest operating frequency; and

g.Repeat procedures b to c.

5.Standard. NAPOLCOM Approved Standard Specifications or ETSI standard value for frequency error as stated in the table below whichever is applicable.

ANNEX C

Frequency Stability Test

1.Purpose. To determine the transmitter frequency stability.

2.Equipment and Materials Needed.

a.Digital communications analyzer;

b.Regulated Power Supply with Variable DC Output (9-15 VDC);

c.AF Signal Generator; cSHATC

d.Frequency Counter;

e.Sampler; and

f.Dummy load (at least 100 watt resistive).

3.Measurement setup. The test apparatus shall be setup as shown in Figure 3.

Figure 3. Block diagram for frequency stability measurement.

4.Procedures.

a.Tune the transmitter to the lowest operating frequency;

b.Operate the transmitter with standard 1-kHz modulating frequency;

c.Measure the frequency at the standard rated voltage of the item under test;

d.Measure the frequency at 10 percent below the standard rated voltage of the item under test;

e.Measure the frequency at 10 percent above the standard rated voltage of the item under test;

f.Document the test results in the table below. Succeeding steps will not be conducted if the measured frequency stability is beyond the standard value;

g.Tune the transmitter to the middle operating frequency;

h.Repeat procedures b to f;

i.Tune the transmitter to the highest operating frequency; and

j.Repeat procedures b to f.

5.Standard. NAPOLCOM Approved Standard Specifications applicable to the item under test.

ANNEX D

Frequency Deviation Test

1.Purpose. To determine the difference between the instantaneous frequency of the modulated carrier and the frequency of the unmodulated carrier.

2.Scope. This test is applicable only to VHF handheld transceivers.

3.Equipment and Materials Needed.

a.Digital Communications Analyzer;

b.Audio Voltmeter;

c.Audio Frequency Generator; SACEca

d.Dummy Load;

e.Sampler; and

f.Deviation Meter.

4.Measurement Setup. The test apparatus shall be setup as shown in Figure 4.

Figure 4. Block diagram for frequency deviation measurements.

5.Procedures.

a.Tune the transmitter to the lowest operating frequency;

b.Adjust the transmitter controls for normal operation;

c.Adjust the audio input for standard audio test modulation, and increase the audio input level until maximum frequency deviation is observed;

d.Measure the frequency deviation with the deviation meter;

e.Document the test result in the following table. Succeeding steps will not be conducted if the measured frequency deviation is beyond the standard value;

f.Tune the transmitter to the middle operating frequency;

g.Repeat steps b to e;

h.Tune the transmitter to the highest operating frequency; and

i.Repeat steps b to e.

6.Standard. NAPOLCOM Approved Standard Specifications applicable to the item under test.

ANNEX E

Audio Output Power Test

1.Purpose. To determine the audio frequency power dissipated across the receiver output terminals of an unsquelched receiver.

2.Equipment and Materials Needed.

a.Digital Communications Analyzer;

b.RF Signal Generator;

c.AF Voltmeter or RF Wattmeter;

d.Isolation Transformer; and

e.Standard Audio Output Load.

3.Measurement Setup. The test apparatus shall be setup as shown in Figure 5.

Figure 5. Block diagram for audio output power measurement on a handheld transceiver, mobile transceiver and base station/radio receiver.

4.Procedures.

a.Connect the receiver and test equipment as shown in Figure 5 with or without the isolation transformer, as necessary; TAcCDI

b.Modulate the RF signal generator with standard audio test modulation and set the receiver to the lowest operating frequency;

c.With the signal generator adjusted for 1-mV output, set the receiver volume control to the maximum position, and measure the audio output power;

d.Document the test result in the following table:

e.Set the receiver to the middle operating frequency and repeat procedures c to d; and

f.Set the receiver to the highest operating frequency and repeat procedures c to d. Succeeding tests will not be conducted if the measured audio power output is 10 percent lower than the standard value.

5.Standard. NAPOLCOM Approved Standard Specifications applicable to the item under test.

ANNEX F

Sensitivity Test

1.Purpose. To determine the minimum modulated RF signal input level required to produce a specified SINAD ratio at a specified audio output power level.

2.Equipment and Materials Needed.

a.Digital Communications Analyzer;

b.Isolation Transformer;

c.RF Signal Generator;

d.Distortion Analyzer; and

e.Standard Audio Output Load.

3.Measurement Setup. The test apparatus shall be setup as shown in Figure 6.

Figure 6. Block diagram for audio distortion and SINAD sensitivity tests.

4.Procedures.

a.Connect the receiver and test equipment as shown in Figure 6 for those receivers with a balanced audio output. For those receivers with an unbalanced audio output, the isolation transformer is not required;

b.Set the squelch control to the standard squelch adjustment;

c.Tune the receiver to the lowest operating frequency;

d.Adjust the RF signal generator to the standard test frequency with standard audio test modulation (1-kHz);

e.Set the generator for 1-mV output and the receiver volume control to maximum. Do not readjust the volume control for the remainder of the measurement;

f.Decrease the output level of the generator until the SINAD meter reads 12 dB, or as specified on the NAPOLCOM Specifications;

g.Measure the audio output power to make certain it is at least 50 percent of the original value and record the generator output voltage for convenience in resetting to a 12-dB SINAD ratio as required by some of the following tests; HETDAC

h.Repeat for changes in standard supply voltage of +10 percent and -10 percent respectively;

i.Document the test results in the table below:

j.Tune the receiver to the middle operating frequency and repeat procedures d to h; and

k.Tune the receiver to the highest operating frequency and repeat procedures d to h. Succeeding tests will not be conducted if the measured sensitivity in any of the operating frequencies goes above the required value.

5.Standard. NAPOLCOM Approved Standard Specifications applicable to the item under test.

ANNEX G

Adjacent Channel Selectivity Test

1.Purpose. To determine the ability of a receiver to differentiate against the signal of an adjacent channel.

2.Equipment and Materials Needed.

a.Digital Communications Analyzer;

b.Two (2) units RF Signal Generator;

c.Signal Combiner;

d.Distortion Analyzer;

e.Isolation Transformer; and

f.Standard Audio Output Load.

3.Measurement setup. The test apparatus shall be setup as shown in Figure 7.

Figure 7. Block diagram for adjacent channel selectivity and desensitization test.

4.Procedures.

a.With the output of RF signal generator no. 2 set to zero, adjust the receiver and RF signal generator no. 1 to the operating frequency with standard audio test modulation. Set the RF generator no. 1 for 1-mV output and the receiver volume control for an audio output power of 5 W for base and mobile transceivers and 500mW for handheld transceivers. Do not readjust the volume control for the remainder of the measurement. Decrease the output level of the RF generator no. 1 until the SINAD ratio of the receiver is 12 dB, as determined with the distortion analyzer;

b.Adjust RF signal generator no. 2 for 3-kHz frequency deviation at 400 Hz, and set it to a frequency corresponding to the center of the next higher adjacent channel;

c.Adjust the output of RF signal generator no. 2 to produce a 6-dB SINAD ratio with both signals present. The ratio, in decibels, of the output voltage of RF signal generator no. 2 to that of RF signal generator no. 1 is the adjacent-channel selectivity for the upper channel; DAaIHT

d.Repeat the above procedure for the next lower adjacent channel. The smaller of the two ratios is the required measurement; and

e.Document the test result in the table below. Succeeding tests will not be conducted if the measured adjacent channel sensitivity is above the standard value.

5.Standard. NAPOLCOM Approved Standard Specifications applicable to the item under test.

ANNEX H

Audio Distortion Test

1.Purpose. To determine the ability of the receiver to maintain the desired audio output

2.Equipment and Materials Needed.

a.Digital Communications Analyzer;

b.Isolation Transformer;

c.RF Signal Generator;

d.Distortion Analyzer; and

e.Standard Audio Output Load.

3.Measurement Setup. The test apparatus shall be setup as shown in Figure 6.

4.Procedures.

a.Set the RF signal generator to the operating frequency at 1-kHz audio test modulation;

b.With the RF signal generator adjusted for 1-mVp-p output, adjust the receiver volume control for an audio output power of 5W for base and mobile transceivers and 500mW for handheld transceivers and measure the audio distortion; and

c.Document the test result in the table below. Succeeding tests will not be conducted if the measured audio distortion is beyond the standard value.

5.Standard. NAPOLCOM Approved Standard Specifications applicable to the item under test.

ANNEX I

Repeater Tests

1.Sensitivity Test

a.Purpose. To determine the minimum RF signal level at the receiving frequency that, applied to the input port, will cause the repeater transmitter to activate and remain activated.

b.Equipment and Materials Needed.

1)Digital Communications Analyzer;

2)RF Signal Generator;

3)Distortion Analyzer;

4)Deviation Meter; CASTDI

5)Standard Audio Output Load; and

6)Test Receiver. This shall include a standard audio output load whose resistance is equal to the load into which the receiver normally operates and shall have an audio frequency distortion of less than one percent at standard modulation.

c.Measurement Setup. Connect the equipment as shown in Figure 8.

Figure 8. Measurement setup for testing a receiver

d.Procedures.

1)Tune the RF signal generator to the lowest operating receive frequency with no modulation;

2)Starting with zero output from the generator, slowly increase the output until the transmitter is activated and remain activated;

3)Record the RF signal generator output. The value obtained is the repeater sensitivity;

4)Document the test result in the table below. Succeeding tests will not be conducted if the measured sensitivity is above the required value;

5)Tune the RF signal generator to the middle operating receive frequency;

6)Repeat steps b to d;

7)Tune the RF signal generator to the highest operating receive frequency; and

8)Repeat steps b to d.

e.Standard. NAPOLCOM Approved Standard Specifications applicable to the item under test.

2.Power Output Test

a.Purpose. To determine the power output being radiated by the transmitter of a repeater system.

b.Equipment and Materials Needed.

1)Digital Communications Analyzer; and

2)RF Signal Generator,

3)Distortion Analyzer;

4)Deviation Meter;

5)Standard Audio Output Load; and

6)Test Receiver. This shall include a standard audio output load whose resistance is equal to the load into which the receiver normally operates and shall have an audio frequency distortion of less than one percent at standard modulation.

c.Measurement Setup. Connect the equipment as shown in Figure 8.

d.Procedures.

1)Activate the transmitter with no modulation either manually or by the use of a transceiver; and

2)Record the output power indicated on the Digital Communications Analyzer. Succeeding tests will not be conducted if the measured sensitivity is above the required value. cEDIAa

e.Standard. NAPOLCOM Approved Standard Specifications applicable to the item under test.

3.Frequency Deviation Test

a.Purpose. To determine the difference between the instantaneous frequency of the modulated carrier and the frequency of the unmodulated carrier.

b.Equipment and Materials Needed.

1)Digital Communications Analyzer; and

2)RF Signal Generator;

3)Distortion Analyzer;

4)Deviation Meter;

5)Standard Audio Output Load; and

6)Test Receiver. This shall include a standard audio output load whose resistance is equal to the load into which the receiver normally operates and shall have an audio frequency distortion of less than one percent at standard modulation.

c.Measurement Setup. Connect the equipment as shown in Figure 8.

d.Procedures.

1)Set the RF signal generator to the receive frequency and adjust it for standard test modulation;

2)Adjust the generator output so that 1 millivolt (mV) is applied to the receiver input port and the transmitter is activated;

3)Measure the frequency deviation from the transmitter; and

4)Document the test result. Succeeding tests will not be conducted if the measured sensitivity is above the required value.

e.Standard. NAPOLCOM Approved Standard Specifications applicable to the item under test.

4.Audio Distortion Test

a.Purpose. To determine the nonlinear distortion of a repeater system.

b.Equipment and Materials Needed.

1)Digital Communications Analyzer; and

2)RF Signal Generator;

3)Distortion Analyzer,

4)Deviation Meter;

5)Standard Audio Output Load; and

6)Test Receiver. This shall include a standard audio output load whose resistance is equal to the load into which the receiver normally operates and shall have an audio frequency distortion of less than one percent at standard modulation.

c.Measurement Setup. Connect the equipment as shown in Figure 8.

d.Procedures.

1)Connect the test equipment to the repeater system in accordance with the setup in Figure 9; CSIcTa

2)Set the RF signal generator to the receive frequency and adjust the generator for standard test modulation using a 1 kHz modulating signal with a total distortion of 0.5 percent or less;

3)Adjust the RF output of the signal generator so that 1 millivolt (mV) is applied to the receiver input port and the transmitter is activated. The standard receiver is sampling the output of the transmitter;

4)Measure the distortion at the output of the test receiver using the distortion analyzer; and

5)Document the test result. Succeeding tests will not be conducted if the measured sensitivity is above the required value.

e.Standard. NAPOLCOM Approved Standard Specifications applicable to the item under test.

ANNEX J

Operating Range Test

1.Purpose. To determine the operating range of each terminal and their compatibility.

2.Equipment and Materials Needed. Global Positioning System (GPS).

3.Locations.

a.Flat terrain;

b.Highly urbanized area; and

c.Thickly forested area.

4.Requirement. Prior to the conduct of the test, record the weather condition or any physical barrier or obstruction near the test area that could affect signal transmission or reception.

5.Procedures.

a.Handheld-to-Handheld Radio (Conventional Operation Test).

1)Establish two (2) stations, one stationary and the other moving;

2)Set the power output to low power (1 Watt);

3)Set the frequency of the radios to the middle operating frequency;

4)With the aid of a GPS, move one of the handheld radios to the designated aerial distance from the fixed station stated in the table below:

5)With the repeater system in the off mode, the radio in the moving station shall establish contact with the radio in the fixed station;

6)Document the test result in the table below:

7)Repeat steps (5) to (6) for aerial distances being incremented by five hundred (500) meters until communication could not be established; HDIaET

8)Set the output power to high power (5 Watts);

9)With the aid of a GPS, move one of the handheld radios to the designated aerial distance from the fixed station stated in the table below:

10)Repeat steps (5) to (7); and

11)Record in the table below the farthest distance covered wherein a clear audio signal was received.

b.Handheld-to-Mobile/Base Radio (Conventional Operations Test).

1)Set the power output to low power (1 Watt);

2)Set the frequency of the radios to the middle operating frequency;

3)With the aid of a GPS, move the handheld radio to the designated aerial distance from the mobile/base radio stated in the table below:

4)With the repeater system in the off mode, the handheld radio shall establish contact with the base radio;

5)Document the test result in the table below:

6)Repeat steps (5) to (6) for aerial distances being incremented by five hundred (500) meters until communication could not be established;

7)Set the output power to high power (5 Watts);

8)With the aid of a GPS, move the handheld radio to the designated aerial distance from the mobile/base radio stated in the table below:

9)Repeat steps (5) to (7); and

10)Record in the table below the farthest distance covered wherein a clear audio signal was received. ICHAaT

c.Mobile-to-Mobile/Base Radio (Conventional Operations Test).

1)Establish two (2) stations, one stationary and the other moving;

Note: In communicating with the base radio, the mobile radio shall serve as the moving station.

2)Set the power output to low power (40 Watts);

3)Set the frequency of the radios to the middle operating frequency;

4)With the aid of a GPS, move the mobile radio to the designated aerial distance from the mobile/base radio in the fixed station stated in the table below:

5)With the repeater set to off mode, the mobile radio shall establish contact with the fixed station;

6)Document the test result in the table below:

7)Repeat steps (4) to (5) for aerial distances being incremented by one (1) kilometer until communication could not be established;

8)Set the output power to high power (50 Watts);

9)With the aid of a GPS, move the mobile radio to the designated aerial distance from the mobile/base radio in the fixed station stated in the table below:

10)Repeat steps (4) to (6); and

11)Record in the table below the farthest distance covered wherein a clear audio signal was received.

d.Repeater Operations.

1)Set the power output to low power; STcHEI

2)Set the frequency of the item to the middle operating frequency;

3)With the aid of a GPS, move the handheld and mobile radios to an aerial distance from the fixed stations stated in the table below:

4)Turn on the repeater system;

5)The handheld and mobile radios shall establish contact with the radios in the fixed stations:

a)The base radio shall establish contact with the nearest base radio.

6)Document the test result in the table below:

7)Repeat steps (5) to (6) for aerial distances being incremented by one (1) kilometer for handheld radios and two (2) kilometers for mobile radios until communication could not be established.

a)The base radio shall establish contact with the next farther base radio.

8)Set the output power to high power;

9)With the aid of a GPS, move the handheld and mobile radios to an aerial distance from the fixed stations stated in the table below:

10)Repeat steps (5) to (7); and

11)Record in the table below the farthest distance covered wherein a clear audio signal was received.

6.Standard.

a.For test equipment serving as receiver, a clear audio signal should be received.

b.For test equipment serving as transmitter, a clear audio signal should be received by the called party.

Note:The quality of the received audio signal must be rated based on the table below. DACTSH

ANNEX K

Adverse Condition/Durability Tests

Procedures. Please refer to PNP Memo Circular No. 2013-007 "Adverse Condition Test Procedures and Guidelines for Fixed and Mobile Radio Equipment and Other Similar Equipment"

ANNEX L

Scrambler/Encryption Tests

1.Purpose. To determine the effectiveness of the built-in security feature (scrambler/encryption) of two-way radios.

2.Equipment and Materials Needed. Three (3) units of two-way radios operating on the same frequency band.

3.Procedures.

a.Enable the scrambler/encryption feature on the two (2) units of two-way radios;

b.Disable the scrambler/encryption feature of the one (1) unit of two-way radio;

c.The radios mentioned in para (a) shall establish communication with each other; and

d.While the communication between the two (2) radios is on-going, the radio whose scrambler/encryption feature was disabled should tune in to the same operating frequency.

4.Standard. The radio whose scrambler/encryption feature is disabled should not hear the conversation between the two (2) radios.

a.For radios with encryption feature, noise instead of normal conversation must be heard; and

b.For radios with scrambler feature, a distorted voice must be heard instead.

ANNEX M

Battery Life Test

1.Purpose. To determine if the battery life of handheld transceivers meets the requirement.

2.Conditions.

a.Prior to testing, batteries must be fully charged in accordance with the manufacturer instructions; and

b.Testing must be initiated between one (1) and two (2) hours following battery recharging. Otherwise, a complete discharge/charge cycle must be accomplished prior to testing.

3.Equipment and Materials Needed. Timer.

4.Procedures.

a.Operate the item under test using standard duty cycle as specified in the NAPOLCOM Approved Standard Specifications. For a 5:5:90 duty cycle (Transmit-Receive-Standby), 3 seconds shall be under transmit current drain, 3 seconds shall be under receive current drain and 54 seconds under standby current drain for one (1) minute of operation; and

b.Document the test result.

5.Standard. Battery life value specified in the NAPOLCOM Approved Standard Specifications. cDIaAS