SpecMini เป็นเครื่องวิเคราะห์สเปกตรัมแบบมือถือระบบ Android เครื่องแรก มีความไวสูงในการทดสอบ การออกแบบที่มีน้ำหนักเบา ขนาดกะทัดรัดและแบบพกพาสะดวก ระบบปฏิบัติการ Android และหน้าจอสัมผัสความละเอียดสูงช่วยให้การทดสอบและการวัดทำได้ง่ายยิ่งขึ้น ด้วยประสิทธิภาพที่ยอดเยี่ยม จึงทำให้ SpecMini ตรงตามข้อกำหนดการทดสอบสัญญาณ RF ส่วนใหญ่


Category: .

• Frequency range: 9kHz to 6.0GHz
• DANL: -168 dBm @1GHz (Sensitivity set to High , RBW normalized to 1Hz)
• RBW: 10Hz to 5MHz
• Multi-screen: maximum 4 windows
• Android operating system: touch screen operation, multitouch, easy-to-use.
• Compact size (191mm×93mm×61mm) and light weight (0.9kg, including the battery)
• 4 hours operating time
•  Support interference signal hunting with AoA algorithm. Map service provided by “OpenStreetMap”
•  Working as drive test scanner for propagation model tunning. Support a maximum 40km/h driving speed

Spectrum Analysis

Swept-tuned Spectrum Analysis

The swept-tuned spectrum analyzer analyzes the stable and cyclically varying signals and provides signal amplitude and frequency information.

Zero Span

As an instrument for frequency domain measurements, SpecMini can perform time domain measurements in zero span mode.

Waterfall Display

SpecMini provide Waterfall display (also called spectrogram). This function allows user to check spectrum in both frequency and time domain. User can easily find aperiodic target signal in waterfall display.

High Sensitivity

SpecMini provide superior DANL as low as -168dBm/Hz, promising a 10 to 20 dB better performance compare with other handheld spectrum analyzer.

Spectrum Measurement Functions

Occupied Bandwidth(OBW)

With SpecMini OBW measurement function in,Engineers can easily measure signal channel bandwidth which include its 99% power (ratio could be adjusted).

NdB Bandwidth

With SpecMini NdB bandwidth measurement function, instrument can test target signal’ s NdB bandwidth automatically.

Channel Power

Channel power refers to the power and power spectral density within a particular channel bandwidth. SpecMini can automatically test the channel power of a given bandwidth.

Adjacent Channel Power Ratio (ACPR)

Adjacent channel power ratio(ACPR) measurements help check for signal leakage, identify and control sources of interference. SpecMini provides automated adjacent channel power ratio measurement.

RF Field Test

Propagation Model Tuning

The SpecMini has a built-in GPS module for stamping latitude and longitude info on spectrum results. Test result with GPS stamp can be stored as screenshots. It is convenient for engineers to match test data and test sites. Also SpecMini can output .csv file which include signal power and GPS info for the after analysis of propagation model tuning. That is to say, SpecMini can works like a CW drive test scanner. With its powerful Android platform and superior measurement speed, user can drive as fast as 40km/h when doing drive test.

Interference Signal Hunting with AoA Algorithm

With this powerful featured APP and optional high performance directional antenna. SpecMini can be used as a ultra compact interference signal locator (map service provided by “OpenStreetMap”). Steps are as follow:
1. User perform a 360° test, lock the direction which he receive strongest interference and make a vector on digital map.
2. User drive to more test locations and repeat step 1. Finally we should get 3 to 5 vectors on map, which cross with each other and enclose a small area.
3. The estimate location of interference is in that small area. User drive in the small area and find the final location with tone signal indicator.

Transmission System Set up and Maintenance

When using for transmission system set up and maintenance,SpecMini can provide:
1. Evaluate signal quality with spectrum analysis
2. Spectrum analysis for mainstream mobile network signal
3. Perform cable test and wireless test for transmission system

Frequency Check

Frequency check is to test the expected frequency band and estimate the interference of the frequency band before building the wireless network coverage. Spectrum measurement with SpecMini is a means of frequency check. Its spectrum results determines the interference frequency and bandwidth; Waterfall display determines the time characteristics of the interference signal.

Multi-touch Operation

SpecMini is based on android. It support multi-touch operation. User can change reference level and center frequency with 1 finger and zoom the span with 2, just like a smart phone.

Multi-task Measurement

SpecMini can simultaneously open 4 windows for measurement tasks with different setting.

Data Store and Transfer

SpecMini provide 8G internal storage. It can save screenshot/data/setting and transfer them via USB/OTG/WiFi/Bluetooth, even upload to cloud storage.

FM demodulation

This customized application support FM demodulation in relevant channel, and play and record FM content as evidence.

Software customization

Transcom provides SpecMini-based software customizing services. Variety of application and software can be pre- installed or build in SpecMini as users demanded.
Transcom also proactively open the API of SpecMini and encourage distributors make your clients’ requirements into customized features on SpecMini.

• GNSS interference Analysis
This customized application can analyze GNSS (GPS, Beidou) signal quality through CNR Loss and JNR. Spectrum function coordinating with the customized application makes traditional testing more convenient.

Key Functions


ACPRCH Power, OBW, Phase Noise, and N
dB Bandwidth


3 Traces: A, B and C

Trace operation: Clear/Write, Maxhold, Minhold, Average, View, Hide





Video (zero span)


8 maximum, support 1 reference with 7 Delta Markers

Peak Search, Marker Delta, Marker+, Marker-


T8260: 0Hz, 100Hz to 6.0GHz

Frequency Slip, Span Zoom (1-2-5-10 series, 4GHz, 6GHz)



Log: 0.1 to 1, 0.1 step

Lin: 1 to 10, 1 step


dBm, dBuV, dBV, W, mW, uW, pW, V, mV, uV


Low, Medium and High


Positive, Negative, Sample, Average, RMS

Reference Level Offset

-50dB to 50dB


4 maximum


Frequency Range

T8260: 9kHz to 6.0GHz

Frequency Reference

Aging Rate: ±1ppm

Frequency Readout Accuracy

±( (Readout Frequency + 1GHz) x Frequency Reference + Frequency Span
Accuracy x Span)

Frequency Span Accuracy


Sweep Time

1.1ms to 1600s

2.69ms to 1600s, zero span

Resolution Bandwidth

RBW Range

10Hz to 5MHz (1-2-3-5-10 Series)

RBW Accuracy

RBW≥1MHz, ±10%

RBW1MHz, ±2%


Measuring Range

Display Average Noise Level to +20dBm

Input Attenuator Range

0 to 30dB, 1dB Step

Maximum Safe Input Level

Sensitivity (Low): +30dBm

Sensitivity (Medium): 0dBm

Sensitivity (High): -20dBm

Reference Level Range

-140dBm to +20dBm

-190dBm to +70dBm (Reference level offset: ON)

Amplitude Accuracy

ATT set to 0 dB, input signal: -5 to -30dBm; detector set to Positive,
Sensitivity set to Low; RBW auto-coupled, all other settings auto-coupled,


RBW Switching Uncertainty


Input Attenuator Uncertainty


Accuracy of Reference Level

Reference level ≥-60dBm, ±0.8dB

Display Average Noise Level (DANL) 

T8260: Input Terminated,Detector set to Positive,Trace Average set to 1000,
Span set to 50kHz, Ref set to -100dBm, all other settings auto-coupled, 23±5
. Normalized to 1 Hz RBW.

5MHz center frequency:

Sensitivity Low:          -129dBm/Hz (typically -131dBm/Hz)

Sensitivity Medium:    -129dBm/Hz (typically -131dBm/Hz)

Sensitivity High:         -149dBm/Hz (typically -150dBm/Hz)

1GHz center frequency:

Sensitivity Low:          -129dBm/Hz (typically -132dBm/Hz)

Sensitivity Medium:    -149dBm/Hz (typically -152dBm/Hz)

Sensitivity High:         -168dBm/Hz (typically -169dBm/Hz)

Residual Response


Input-related Response

9kwHz to 1.1GHz <-70dBc
1.1GHz to 1.85GHz, 2.9GHz to 2.97GHz <-41dBc
1.85GHz to 2.9GHz, 2.97GHz to 3.11GHz, 3.7GHz to 5.6GHz <-50dBc
5.6GHz to 5.8GHz <-45dBc
3.11GHz to 3.7GHz, 5.8GHz to 6.0GHz<-39dBc

Second Harmonic Distortion

1.6GHz  -70dBc

Third-order Intercept (TOI)

-10dBm tones, 1MHz apart, Sensitivity set to low, Ref set to -10dBm



+5dBm (nominal)

Phase Noise @1GHz

-95dBc/Hz, @10kHz (typically -97dBc/Hz)
-115dBc/Hz, @1MHz (typically -116dBc/Hz)


System settings

Reset, Save, Recall, Screen Copy, Print, Language, Service, About


RF input: N-type, female, 50Ω

USB: USB type C

Power interface: DC12v


5.5-inch, 720p

Operating System



Type: Lithium-ion

Operating time:     4hours

Charging time:     6hours

Charging temperature: 0°C to +35°C, Must be in power of state

Operating Environment

Operating temperature: 0°C to 50°C

Storage temperature: -20°C to 70°C






Technical specifications

This technical specifications include the influence of probability distribution, measurement uncertainty and environmental factors on the instrument performance. It guarantee the performance under the following conditions.
• The instrument is ON and warmed up for 30min.
• The instrument internal reference signal is applied.
Testing temperature is 23±5 ºC, unless other specific condition applied.

Typical value

Additional description does not cover all performance information of the product guarantee. Unless otherwise specified, the typical value refers to the indicator or technical specification with which more than 80% of products comply under 23 ± 5 ºC. The measurement uncertainty is excluded. SpecMini should be within the calibration period.

Nominal value

The nominal value refers to the characteristic description or design range. It is not tested or covered by the product. SpecMini should be within the calibration period.



SpecMini handheld spectrum analyzer (9kHz to 6GHz)

Accessories Model


Power adapter (20V/4.5A output)


Power cable (China standard)


Power cable (US standard)


Power cable (UK  standard)


Power cable (EU  standard)


USB data cable


USB OTG cable


Capacitive pen


Portable box


Portable soft bag


USB disk


FM demodulation


Waterfall display



AoA locate

Replacement options


Replacement battery



Transcom SpecMini T8260

Keysight, N9340B

Anritsu/ MS2712E/ MS2713E

Frequency Range

9kHz – 6.0GHz

100 kHz – 3 GHz

MS2712E: 9 KHz – 4 GHz;  MS2713E: 9 kHz – 6 GHz

Frequency Reference

± 1 ppm

± 1 ppm

± 1.5 ppm < ± 50 ppb + GPS(optional)


Occupied Bandwidth, Channel Power, ACPR, Phase Noise

Spectrum Emission Mask, Field Strength, High Accuracy Power, Channel Power, OBW, ACPR

Occupied Bandwidth, Channel Power, ACPR, C/I

Interference Analyzer

Spectrogram, Mapping(optional)


Spectrogram, Signal Strength, RSSI, Mapping


< -168 dBm @ 1 GHz

<-144 dBm @ 1 GHz

<-162 dBm in 1 Hz RBW

Phase Noise

-96dBc/Hz,@1GHz (10kHz offset)
-118dBc/Hz,@1GHz (1MHz offset)

-89 dBc/Hz @ 1 GHz (30 kHz offset)
-119 dBc/Hz @ 1 GHz (1 MHz offset)

-100 dBc/Hz max @ 10 kHz offset at 1 GHz








3.45 kg

Operating Time

4 hours

4 hours

3 hours


Android Touch Screen


Keyboard + Touch Screen

Case 1 – operator interference search

SpecMini handheld spectrum analyzer was chose by China Telecom Dongguan branch, using for interference locating.

On April 10, 2017, China Telecom Dongguan Branch, through backend statistics, found that a certain cell has interference in the upstream frequency band of frequency point No. 201 (ie, 831.03 MHz), which has affected the use of large areas of the network. It needs to pass the test. Find sources of interference and eliminate interference.

During the test, three buildings in the area were selected, then engineer used directional antenna on the roof to determine the direction of the interference. A three-point positioning test method was used to reduce the possible location range of the interference source. Therefore, a proximity-type interference test was conducted near the test area. As the interference source was approached, the reception level gradually increased and eventually the interference source was found in a store.

Case 2 – FCC base station brief check case

State Radio Spectrum Management Center is responsible for frequency attribution check. When operator plan to setup a new base station, spectrum management center need to check if the spectrum is clean and ready to use.  If the spectrum is already been used, management will find the illegal signal source and terminate it.

For some base station, their planning location is very hard to drive in. Some times, staff even need to climb up to the roof to test. Therefore,  the potability of spectrum analyzer is important to their application.

In 2015, a China Mobile branch reported that a new base station using 2590MHz to 2610MHz band needs to be build in an industrial park. In accordance with regulations, manage center shall verify the usage of the corresponding frequency band in the area before the base station is installed. In the park, 3 location, including the roof to install base station, a location near roof and a location far from roof were selected for verification. Through the frequency band attribution automatic inquiry function, SpecMini automatically shows that the frequency band to be measured belongs to China Mobile’s TD-LTE frequency band. Test result shows the band is clean and ready to use.