cs_receptor portabil_antene_eng.pdf

NATIONAL REGULATORY AGENCY FOR COMMUNICATIONS  
OF THE REPUBLIC OF MOLDOVA 
 
 
 
 
 
 
 
 
 
  
TECHNICAL REQUIREMENTS 
regarding the procurement of a Portable Monitoring Receiver 
with Receiving Antennas 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Chișinău - 2026
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1. Introduction  
 These Technical Requirements are an integral part of the Procurement 
Documentation and constitutes the complete set of r equirements on the basis of which 
the Technical Proposal is to be prepared by each tenderer. 
 The requirements set forth shall be considered min imum and mandatory. In this 
regard, any submitted offer that deviates from the provisions of the Technical 
Requirements will only be considered to the extent that the Technical Proposal ensures a 
qualitative level superior to the minimum requireme nts specified herein. Any offer 
containing product characteristics inferior to thos e stipulated in these Technical 
Requirements will be deemed non-compliant and will be rejected. 
 The subject of this procurement procedure is the s upply of one portable monitoring 
receiver, complete with a set of portable receiving  antennas and all necessary 
accessories. 
2. Purpose of procurement 
 The purpose of procuring the portable monitoring r eceiver is to modernize the 
National Spectrum Monitoring System of the National  Regulatory Agency for 
Communications (ARCOM). 
 The receiver shall provide the technical capabilit ies required to: 
- detect, identify, and locate unauthorized radioco mmunication stations; 
- detect, identify, and locate sources of harmful i nterference affecting the normal 
operation of authorized radiocommunication stations; 
- verify that the transmission technical parameters  of radiocommunication stations 
comply with the approved values. 
 Guaranteed 
Technical 
Specifications 
(to be completed by the 
tenderer) 
3. Quantity  
One portable monitoring receiver, complete with a set of portable 
receiving antennas and all necessary accessories. 
 
4. Minimum equipment requirements  
4.1 The portable monitoring receiver and the receiving antennas shall 
have a compact, durable, and ergonomic design, enab ling easy 
operation in the field by a single operator. 
4.2 The portable monitoring receiver shall be equip ped with 
localization capabilities, using the triangulation method, to locate the 
signal source by means of the supplied directional antennas. 
4.3 The portable monitoring receiver shall be equip ped with a color 
display having a diagonal size of at least 6.5 inch es, providing clear 
image visibility both indoors and outdoors, including in direct sunlight.

 monitoring receiver shall be equip ped with a color 
display having a diagonal size of at least 6.5 inch es, providing clear 
image visibility both indoors and outdoors, including in direct sunlight.
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4.4 The portable monitoring receiver, together with all accessories, as 
well as the set of receiving antennas, shall be sup plied in waterproof 
and shock-resistant carrying cases. 
4.5 The portable monitoring receiver shall be equipped with a built-in, 
replaceable rechargeable battery providing a minimum operating time 
of 3 hours, and an AC power adapter (220 V AC) for battery charging. 
The receiver shall also be supplied with one additi onal spare 
rechargeable battery, providing a minimum operating time of 3 hours, 
to extend the overall operating autonomy. 
4.6 The portable monitoring receiver shall allow th e recording of 
measured data on internal memory or external memory  (SD card), 
with the possibility of downloading the recorded data to a computer. 
4.7 The portable monitoring receiver shall allow th e updating and 
enhancement of the internal software with new funct ionalities and 
options. 
4.8 The graphical user interface for the specialize d software and all 
software/firmware options provided and installed on the receiver shall 
have a full license with no operational limitations, such as time-limited 
use of any option or the entire application. Sharew are, adware, or 
similar applications are not acceptable. 
 
5. Composition  
 Portable monitoring receiver with built-in recharg eable (Li-Ion) 
battery and installed software/firmware options to ensure 
compliance with the minimum required specifications. 
 Set of directional antennas. 
 Durable, waterproof, and shock-resistant wheeled c arrying 
case for the portable monitoring receiver and accessories. 
 Durable, waterproof, and shock-resistant wheeled c arrying 
case for the portable receiving antenna set. 
 Spare Lithium-Ion battery. 
 Battery charger, 220 V AC / 12 V DC. 
 Set of straps for securing the receiver to the ope rator’s body. 
 Transparent waterproof cover for the receiver (for  use in rainy 
conditions). 
 User manual. 
 Calibration certificate for the portable monitorin g receiver.  
 
6. Minimum Technical Specifications  
 6.1 Portable Monitoring Receiver 
 Display of digital maps (e.g., OpenStreetMap) on t he receiver’s 
screen for the examination of triangulation results on the map, 
based on measurements performed at multiple points and at 
different times. 
 Storage of signal angle-of-arrival measurements fo r the 
localization of radio signal sources in the internal memory or 
on an SD card inserted  into the receiver.

 points and at 
different times. 
 Storage of signal angle-of-arrival measurements fo r the 
localization of radio signal sources in the internal memory or 
on an SD card inserted  into the receiver.
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 Recording and storage, in the internal memory or on an SD 
card inserted into the receiver, of the radio frequency 
spectrum, geographic location, and demodulated audio, with 
the possibility of subsequent replay of the recorded data.  
 The receiver shall be equipped with physical contr ol buttons 
for operation. 
 Numerical display of the measured signal level at the receiver 
input simultaneously with the radio frequency spectrum. 
 Analysis/inspection of the radio frequency spectru m using 
configurable markers. 
 Monitoring of various radio services, including th e ability to 
scan a frequency band with a configurable step size 
depending on the monitored radio services, and the ability to 
scan predefined radio channels together with the technical 
parameters of each radio channel. 
 Alphanumeric display, on an integrated color displ ay with a 
diagonal size of at least 6.5 inches, of the main characteristic 
parameters of a radio signal, namely frequency and signal 
level at the receiver input, expressed in dBm, dBµV, etc., with 
values associated with a marker on the displayed spectrum, 
which can be configured at any frequency within the analyzed 
band. 
 Fast frequency scanning or scanning from a list of discrete 
frequencies across the entire receiver frequency range, with 
panoramic display of the scanned spectrum (panorama 
scan).  
 Real-time display of the frequency spectrum and sp ectrogram 
through a polychromatic visualization of the radio spectrum 
evolution over time, with signal level values represented by 
color coding, enabling the separation of multiple overlapping 
signals (polychrome spectrum). 
 Real-time display of the radio frequency spectrum (frequency-
versus-time representation, also known as a waterfall 
display). 
 Simultaneous measurement and display of spectrum a nd 
envelope, with time-gated spectrum determination for the 
investigation of interference in TDD/TDMA transmissions. 
 Real-time demodulation of at least AM, FM, Pulse, I/Q, USB, 
LSB, ISB, and CW signals. The receiver shall provide audio 
output of the demodulated signal through a headphone 
connector and a built-in speaker.  
 Detection and display of short-duration signals (b ursts). 
 Audio signal for emission source localization usin g an audio 
tone with variable intensity depending on the level of the 
received radio signal. 
 Recording and storage measurement results on the i nternal 
memory, an SD card, or a USB flash drive inserted into the 
receiver, selectable from the receiver menu, for subsequent 
analysis. 
 Frequency range: minimum 10 kHz – 8 GHz; 
 Instantaneous displayed bandwidth (real-time): ≥ 125 MHz;  
 Programmable frequency resolution: 1 Hz ;

from the receiver menu, for subsequent 
analysis. 
 Frequency range: minimum 10 kHz – 8 GHz; 
 Instantaneous displayed bandwidth (real-time): ≥ 125 MHz;  
 Programmable frequency resolution: 1 Hz ;
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 Frequency accuracy: in accordance with ITU-R 
Recommendation SM.377; 
 Noise figure: ≤ 20 dB; 
 Receiver sensitivity: ≤ -95 dBm; 
 Probability of Interception (100% POI), for a 100 MHz 
bandwidth: 100% for pulses of 2 µs or shorter;  
 Panoramic display of the IF spectrum: 1 kHz – 125 MHz, with 
a minimum of 12 intermediate span settings; 
 Selection of intermediate frequency (IF) filter ba ndwidths: in 
accordance with ITU-R SM.1836; 
 Receiver input VSWR: ≤ 2; 
 Receiver input attenuator: minimum 40 dB, selectable in 
steps of 1 dB or smaller; 
 Adjustable squelch from -30 dBμV to +180 dBμV, in 1 dB 
steps; 
 Automatic and manual gain control (AGC and MGC); 
 Automatic frequency control (AFC); 
 Detection of signals of interest in the following modes: Peak, 
RMS, Average; 
 Implementation of MinHold and MaxHold functions; 
 AM, FM, Pulse, I/Q, USB, LSB, ISB, and CW demodula tion; 
 Scanning speed : > 150 GHz/s;  
 Analog-to-digital converter: minimum 14 bits;  
 Input impedance: 50 Ω; 
 Maximum non-destructive signal level at the receiv er input: > 
+20 dBm; 
 Minimum required connectors and interfaces: N-type RF input 
(female), 1 Gbps LAN, USB, SD card, 3.5 mm audio output 
for headphones; 
 External power supply of the receiver from a 220 V  AC mains 
source; 
 Capability of battery-powered operation in outdoor  
environments within a temperature range of -5 °C to +50 °C;  
 Receiver weight (with internal battery): maximum 3.5 kg. 
 6.2 Set of Receiving Antennas 
 The set of directional antennas shall include a ha ndle support 
with RF and control cables for connection to the monitoring 
receiver, several interchangeable receiving modules 
(directional antennas), as well as an integrated GNSS 
receiver and electronic compass in the handle support, 
required for determining the azimuth and elevation of the 
received signal. 
 At least one receiving module shall support switch ing and 
operation in signal minimum-based direction-finding mode 
(with a pronounced null characteristic) at least within the 700–
2500 MHz frequency range, used for precise direction 
detection. 
 Frequency range: minimum 20 MHz – 8 GHz; 
 Polariza tion : lin ear ;

ith a pronounced null characteristic) at least within the 700–
2500 MHz frequency range, used for precise direction 
detection. 
 Frequency range: minimum 20 MHz – 8 GHz; 
 Polariza tion : lin ear ;
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 Operating mode: switchable active/passive mode from the 
handle; 
 Connector: N-type (m), 50 Ohm;  
 Antenna VSWR: better than 3 across the frequency range of 
20 MHz – 8 GHz; 
 Possibility to mount and operate the handle suppor t on a 
tripod; 
 Maximum dimensions of any antenna: 700 × 300 × 100 mm;  
 Operating weight of a single antenna: maximum 1 kg.  
7. Warranty  
 The warranty period shall be a minimum of 24 (twen ty-four) 
months for all delivered components and shall comme nce from the 
date of the delivery-acceptance certificate being s igned without 
objections, under the conditions set out in the procurement contract. 
 Throughout the warranty period, the supplier is ob liged to 
provide, at no additional cost: 
- repair of all faults for all delivered equipment, by repairing or 
replacing defective components; 
- resolution of functional errors of the monitoring receiver; 
- provision and implementation of updates and/or upg rades to 
the firmware/software of the monitoring receiver; 
- transportation of defective equipment to/from the 
supplier/manufacturer, including international tran sport (if 
applicable); 
- technical support for personnel who will operate t he monitoring 
receiver.  
 
8. Post-warranty support  
 The supplier is obliged to ensure, after the expir y of the 
warranty period, under the terms of a subsequent co ntract, services 
and spare parts for a minimum period of 7 years for  all delivered 
equipment.  
 
9. Other mandatory requirements  
 Delivery period: 120 calendar days . 
 All delivered equipment must be new. 
 The portable monitoring receiver must bear the 'CE ' marking, 
indicating that the manufacturer has certified it a nd that it meets all 
European Union conformity requirements and, correspondingly, those 
of the Republic of Moldova. 
  Place of delivery: ARCOM, MD-2003, Chișinău municipality, 
Durlești city, Nicolae Dimo Street, 22/20 .  
 To confirm expertise and capacity to deliver compl iant 
equipment, tenderers must provide: 
- documents attesting to a minimum of 5 years of exp erience of 
the tenderer in supplying similar or superior equipment;
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- copies of recommendation letters or feedback from at least 3 
electronic communications regulatory authorities in  Europe 
that have purchased and use similar equipment. 
10. Offer evaluation method  
 The offer that meets all requirements of these Tec hnical Requirements and has the 
lowest total price will be selected. 
11. Method of demonstrating offer compliances  
 Compliance with and adherence to all requirements set out above must be 
demonstrated for each requirement individually in t he column 'Guaranteed Technical 
Specifications', by precisely stating the manner in  which each requirement is met, 
referencing (page, section,

e 
demonstrated for each requirement individually in t he column 'Guaranteed Technical 
Specifications', by precisely stating the manner in  which each requirement is met, 
referencing (page, section, etc.) the accompanying technical documentation where it can 
be identified. 
 Technical documents (technical specifications, dia grams, catalog sheets, 
brochures, etc.) from the manufacturer shall be att ached to confirm compliance with the 
technical specifications and the minimum conditions  imposed above. These documents 
may be presented in Romanian or English. 
 The technical offer shall specify the model and ma nufacturer of the portable 
monitoring receiver, and shall indicate the codes o f all options and accessories supplied 
along with a detailed description thereof. 
 Complete or partial copying of the Technical Requi rements within the technical 
proposal is not permitted, tenderers are obliged to  demonstrate the compliance of their 
offer with its requirements. Likewise, a mere decla ration of compliance by the tenderer 
does not constitute proof of fulfillment of the required technical specifications.