900 MHz point to point broadband

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Granger Telecom is virtually the last supplier of analog microwave systems. These systems have racks of subcarrier modulator cards that go into a 5 watt 900 MHz analog transmitter. Analog microwave has many of the disadvantages of AM radio despite being at 900 MHz (or higher) channel.

I provide turnkey digital microwave systems, including system siting and planning using systems from Microwave Data Systems in Rochester, NY. Microwave Data Systems was part of Northrop Grumman / California Microwave, now Adaptive Broadband as the acquisiton cycles common in the microwave industry. The MDS LEDR radios fit in 900 MHz channels from 25 - 200 kHz, with data rates from 64 - 768 kbps – a fractional T1. Modern two way radio systems are adopting VoIP (Voice over IP), that is, digital voice that can be sent over computer networks such as the Internet or digital wireless radios.

Some of our clients use MDS radios to link remote offices at broadband speeds, without fear of interference from unlicensed radios. International/government microwave network applications can occur in the 330-512 and 1350-1535 MHz bands along with 800-960 MHz. The LEDR radio transmits with one watt–but most importantly operating at far lower receive signal strength and is much more tolerant of interference than analog microwave.

LEDR radio operating characteristics are available remotely, and we offer a logging/alarm option with SNMP messaging to provide prompt, actionable alerting. You honestly may not even be realizing how often your microwave link is impaired, particularly for two-way radio voting systems, where failures are silent–unless you have one of our voting receiver monitor logging/alert systems. I don’t mind if you call Motorola first–then call me and check out the price difference, while supporting a small business, with excellent documentation and support. I will not trap you into vendor lock-in by insufficient documentation or inscrutable specifications. I have good relations with my competitors, and I’ll give you their numbers too. You might find them cheaper in the short term, but I would at least implore you to have your system designed right up front–because it will cost a lot more to buy something inadequate and then replace with the right equipment a year later.



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