TSP Transmitter

TSP Transmitter

2G 3G 4G Pilot Signal Transmitter

TSP pilot transmitter is a kind of special engineering instrument applicable to emulation and testing of indoor and outdoor signal coverage and evaluation and testing of signal interference. It is mainly used for simulating and outputting CW and modulation signals, i.e. actual pilot signals transmitted by the base station. Due to easy deployment and low cost, the instrument can be used as a substitute of actual base station in the test system for relevant tests of the simulating signal source.

TSP pilot transmitter, with compact structure, high portability and external large-capacity battery, is applicable to field or indoor engineering tests. Various combined modes are available and can be customized to meet various test demands of users. The instrument is generally applied in propagation model tuning, coverage evaluation testing and auxiliary design and engineering acceptance of indoor distrbution systems.

For 5G CW drive test, see TSP CW Scanner.

For 2G 3G 4G drive test, see TSP-X Scanner.

For NB-IoT/eMTC drive test, see IoT Scanner.

  • Support the output of GSM, TD-SCDMA, CDMA2000, WCDMA, LTE, NB-IoT and LoRa modulation signals and CW signals.
  • Wide band: support the 700MHz – 2,700MHz output in the pilot signal modulation mode, support additional 3.3GHz – 3.6GHz and 4.8GHz – 5GHz for 5G frequency check (CW only). Frequency adjustment step is 10kHz, meeting the needs of standard signal test.
  • In the CW mode, the frequency and power are adjustable. In the modulation mode, the frequency and power are adjustable, and the BSIC code of GSM, Midamble code of TD-SCDMA, PN code of CDMA2000, scrambling code of WCDMA, power of CPICH and Channel, PCI and bandwidth, and PCI of NB-IoT can be set; the modes of Standalone, Inband and Guard-band are available; and the PCI and S7-S12 waveform file of RoLa can be configured.
  • Large power adjustment range: 0-43dBm, with the step of 0.5dB.
  • The power, frequency and other parameters can be remotely set via APP. The instrument is easy to operate and carry, with the effective operating distance of 10m, avoiding radiation injury resulting from high-power transmission.
  • Integrated design: small size (200×110×230 mm) and light weight (4.5kg). With the external battery, the instrument can continuously work for 5-8h, which is applicable to outdoor complex environments.
  • The instrument can be configured flexibly, and the frequency band and power can be customized according to user demands.
  • Product features
  • Support the signal emulation output of the existing multisystem network and the Internet of Things
  • Support 5G frequency check in band 3.3GHz – 3.6GHz and 4.8GHz – 5GHz
  • Support terminal test applications
  • Large power adjustment range
  • APP remote control and simple deployment
  • Typical applications
  • Propagation model tuning test
  • Micro base station planing test
  • Static scene loss test
  • Distribution system acceptance test
  • Multi-operator interference evaluation

Support signal emulation of the existing multisystem
network and the Internet of Things

A single TSP pilot transmitter meets the needs of CW and
modulation signal output of all standard protocols and the
protocol of the prevailing Internet of Things, saving the fund
investment of customers and bringing conveniences for the
user to test various signals.

Signal source for 5G frequency check

TSP transmitter support generate CW signal in
3.3GHz – 3.6GHz and  4.8GHz – 5GHz. With the
accurate power output and 0.5dB output adjust
step, it is suitable 5G frequency check.

Large power adjustment range

The dynamic adjustment range of a single instrument is
43dB, meeting test needs of indoor and outdoor scenes.

APP remote control and simple deployment

The transmitter is a kind of engineering test instrument,
which should be easy to deploy and operate for tests in
various scenes. TSP transmitter is controlled by APP within
10m, facilitating remote operation and avoiding radiation
injury caused by radio waves in high-power transmission of

Propagation model tuning

Background: The propagation model is used for describing
and reflecting the characteristics of the actual wireless signal
propagation environment and rules of signal changes to
certain degree via one mathematical mode. It represents the
propagation environment of specific scene, and characterizes
the radio wave propagation loss of specific environments or
propagation paths. It mainly focuses on slow fading caused
by shadow effects of barriers on propagation paths. The
geographic types and topographies of various countries and
regions vary greatly. Some parameters of one model to be
applied in various regions must be modified, which is known
as propagation model tuning.

Solution: As an simulating signal source, TSP pilot
transmitter is able to output CW signals. The signal
parametersincluding geographic information are collected
by the receiver by means of field testing, and the output
data are imported into the planned software to adjust model

Micro base station planing of indoor distribution

Background: With building of 4G networks and
popularization of intelligent terminals, data services are
developed rapidly, and user behaviors of indoor scenes are
more intensified. Operators can build indoor distribution
systems to win indoor data traffic, improve the operation
profits, expand new businesses and maintain the user loyalty.
In order to improve the quality and management capability of
the indoor distribution system, simplify the building of indoor
distribution system, the new indoor distribution system was greatly

promoted in 2017 in China, and more micro base
stations were built. By means of emulation testing of new
indoor distribution system, the layout problems of micro base
stations can be solved effectively.
Signal coverage testing is able to accurately quantifying and
locating base station to simulate the actual deployment.
CW signal and pilot signal are the most common signals for
emulation and performance testing. In most of the indoor
scenario, signal can be blocked by obstacles or affected by
complex area then cause propagation loss. CW signal testing
result often varies compare to actual performance in terms
of narrow and non-identical indoor environment that leads
to RSSI difference. In contrast, pilot signal behaves
identical with the actual signal and can be further
evaluate by CINR ratio. Thus pilot signal is the primary
requirement for micro base station distribution

Solution: As an simulating signal source, TSP pilot
transmitter is able to output modulation signals of operating
systems of LTE and other existing networks. The cell signal
parameters(Channel, PCI, RSRP, RSRQ, SINR, etc.) are
collected by the receiver by means of walk test, and the
actual coverage of the base station is simulated to simulate
the coverage of base station signals, further confirm the
locations and quantity of base stations and provide accurate
data for the layout of indoor distribution system.

Static scene loss test

Background: The scenes of indoor distribution system
vary. Before the distribution system is designed, the signal
attenuation in actual scenes should be understood, such as
conference rooms, offices, restaurant, hotels, classrooms,
etc. The signal attenuation emulation tests of various scenes
can provide calculation reference for the indoor distribution
system design and improve the final coverage of the
distribution system.

Solution: As an simulating signal source, TSP pilot
transmitter is able to output modulation signals of operating
systems of LTE and other existing networks. The loss
properties of actual signals in special scenes (such as doors,
walls, fixed barriers, etc.) can be simulated by means of
testing with the receiver at the given point, to provide data
for the indoor distribution system design.

Acceptance of traditional indoor distribution

Background: The cable, passive device and ceiling antenna
are used as signal transmission parts of the traditional indoor
distribution system. The coverage should be verified in
acceptance. At the same time, the conformity of the downlink
power attenuation, uplink power attenuation and antenna
downlink power to design values should be verified.

Solution: As an simulating signal source, TSP pilot
transmitter is able to output modulation signals of operating
systems of LTE and other existing networks. Cell signal
parameters(such as the Channel, PCI, RSRP, RSRQ, SINR,
etc.) are collected by the receiver by means of walk test, and
the acceptance of indoor distribution system is carried out
based on analysis results of wireless signal coverage. The
downlink power attenuation, uplink power attenuation and
antenna downlink power are subject to sampling inspection
with the handheld power test instrument, to verify the
conformity to design values. The compliance of the indoor
distribution system with engineering acceptance standards
is evaluated based on the wireless test and power test data.
Faults of the distribution system are located, in combination
with the handheld antenna/feeder test instrument.

Multi-operator interference evaluation

Background: At present, networks are run by various
operators. As the stations of operators are concentrated
and frequency resources are adjacent to each other, mutual
influence indoors and outdoors are unavoidable. Operators
can evaluate the influence of other networks by simulating
the coverage of competition networks and downloading the
service rate, SINR value and other parameters.

Solution: As an simulating signal source, TSP pilot
transmitter is able to output modulation signals of operating
systems of LTE and other existing networks. RF signal
parameters (such as the Channel, PCI, RSRP, RSRQ, SINR,
etc.) of each operator are collected by the terminal. Change
the channel, power and system of the transmitter, and
observe the SINR value of the tested cell on the terminal.
Evaluate the influence of competition networks by service


Device type

Applicable Network System 

Frequency Step

TSP transmitter (Pilot & CW: 700MHz to 2,700 MHz; CW only: 3.3GHz to 3.6GHz, 4.8GHz to 5GHz)










10KHz or 100KHz

Electrical Characteristic

Output Power

0dBm to 43dBm

Power Step

0.5dB minimal

Power Accuracy



Spectrum Mode

CW mode, Pilot mode

Out-of-band Spurious

≤-50dBc (beyond the operating frequency of 200kHz)

Second Harmonic

≤-15dBc (typical)

Operating Temperature

-20°C to +50°C

Storage Temperature

-40°C to +70°C

Mechanical Features




4.5kg (9.9lb)

RF Interface

N-type female connector

Power Supply

220V AC; 28V DC; max power consumption: 140W

Communication Interface







TSP transmitter 20W

Accessories Model



5m feeder and N-type connector


5dBi omnidirectional antenna 870 to 960 MHz


5dBi omnidirectional antenna 1710 to 1990 MHz


5dBi omnidirectional antenna 2000 to 2200 MHz


5dBi omnidirectional antenna 2300 to 2400 MHz


5dBi omnidirectional antenna 2500 to 2700 MHz


5dBi omnidirectional antenna 3400 to 3600 MHz




Draw-bar box


For its powerful performance, Transcom TSP Transmitter has received wide acclaim from customers including operators, base station equipment manufacturers and research institutes. It shows that it supports wide test frequency range, high output power adjustment range, convenient Wi-Fi remote control, and support all the mainstream mobile and IoT signal modulation.

Hundreds of Transcom TSP Transmitter was sold in China. Currently, More than 100 units of pilot signal transmitter holding by Chinese operator China Unicom and China mobile is Transcom product. Reference customer also include Huawei and Datang Telecom.