Product Description


SATEL Proof-TR4+ / -TR9

Industrial UHF/VHF Modem

Heavy-duty radio modem with IP69K rating.


SATEL Proof-TR4+ / -TR9 is a heavy-duty radio modem. It has the IP69K rating, which is the highest protection available. It protects against ingress of dust, high temperature and high-pressure water. The product consists of this IP69K sealed housing and a radio module using either 403-473 MHz or the ISM licence-free frequency band 902-928 MHz.

SATEL Proof-TR4+ / -TR9 with IP69K-classification meets, for example, the requirements of machine control, smart farming and marine applications. It is a flexible and cost-effective solution that has profound electrical protection; both the power and data lines as well as the antenna interface are surge protected. It also has additional filtering on GNSS frequencies.

The modem is compatible with SATELLINE-EASy, -TR1, -TR9 / SATEL-EASy+ / -TR+ / -TR49 / -TR489 based products as well as several other radio protocols.

Complies with the requirements in the USA, Canada and Australia.

  • SATEL Proof-TR4+ (YM6577) with AES encryption support

  • SATEL Proof-TR4+ (YM6578) without AES encryption support

  • SATEL Proof-TR9 (YM6587)


Frequency range

403 .. 473 / 902 … 928 MHz

Channel spacing

6.25*, 12.5, 20* and 25 kHz, software selectable @ TR4

* uses 12.5 kHz channel width

Spreading method

Frequency hopping @ TR9

Sensitivity / Carrier power

-118 … -105 dBm / 1 W


RS-232 (TD, RD lines)

Data speed

Serial: 9600 - 115200 bps @ TR9

Radio: - 115200 bps @ TR9

Operating voltage range

+7 … +27.5 Vdc (-15% / +20%


Deutsch DT04-6P-CL09 / TNC female


176 x 95 x 42 mm


< 500 g

IP classification



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