How to detect a cell phone jammer - homemade phone jammer detector

Full band Mobile Signal Booster 1850-1910MHz1930-1990MHz1900MHz Pico-Repeater  900MHz TE-9102B FullBand Signal Booster   Brief Description： 900MHz Pico-Repeater is intended to strengthen the signal of  900MHz mobile phone in the buildings. Ideal for use in areas where the 900MHz signal is weak to cause Call dropout or Cant connection. The device improves the voice calls and data VOICE GPRS and EDGE (depends of the signal operator)   Features: *High system gains. *Full duplex and double-end design, external power supply, and convenient installation. *ALC technology with auto-steady function adopted. *Provide power indication and uplink and downlink indications. *With the amplified linear power, the inter-modulation an spuriousness are suppressed effectively. *The reliability conforms to GB6993-86 standards. *The electromagnetic compatibility conforms to ETS300 609-4 standards.   Applicable place: It can be applied in Building rooms there have weak signal of mobile.   Specification: Frequency Range: 2. TE-9102B (Uplink: 890-915MHz; Downlink: 935-960MHz); Gain: 2. TE-9102B (GSM Uplink) Gp≥65dB; (GSM Downlink) Gp≥70dB; Gain adjustable: (this function is only for TE-9102B) MGC≥30dB;   Outout Power： 1. TE-9102A ≥20dBm; 2. TE-9102B ≥23dBm; Pass band ripple:GSM≤5dB; Guard band rejection: GSM (BW-60dB) ≤42MHz; GSM (BW-70dB) ≤45MHz; I/O impedance: 50Ω/N Connector; I/O return loss: ≤-8dB; Noise figure: ≤-8dB; Inter-modulation attenuation(Po=13dBm):≤-40dBm; Transmission: ≤0.5μs; Ambient:-10℃-50℃; Power Supply: AC110-220V±10%/45～55Hz; Size:148mm×106mm×33mm; Reliability: To the GB6993-86 standard; Electromagnetic: To the ETS300 694-4 standard; Function: a) Power supply LED denote b) Export power LED denote Order Information : 900MHz Pico-Repeater Model:TE-9102A: Cover-max 100-500 square meters; 900MHz Pico-Repeater Model:TE-9102B: Cover-max 500-800 square meters;   Package contents: 1 pcs booster 1 set power supply 1 pcs user manual 1 set installation screws  

how to detect a cell phone jammer

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