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RF service monitors get analog radio updates

Posted: 12 May 2005 ?? ?Print Version ?Bookmark and Share

Keywords:aeroflex? service monitor? analog radio testing? 2945b? 2948b?

Communications and RF test equipment supplier Aeroflex is rolling out a pair of communications service monitors for analog radio testing. As battery operated instruments, you can carry them on-site and even up towers. Of course, they'll be equally at home in the development lab, or on the service shop bench.

Dubbed the 2945B and 2948B, they're for those of you working with analog pmrs (Private Mobile Radios). With these intros, Aeroflex claims it's the only major test vendor actively supporting testing of all primary digital and analog PMR systems.

The predecessors to the 2945B and 2948B service monitors have seen acceptance because they're rugged and weigh under 25 lbs. Features include full span spectrum analyzers, tracking generators with offset tracking, and the ability to measure RF power to 150W. They have a frequency range from 400kHz to 1.05GHz.

Options and new features

The latest products have all the same features as previous models, plus added features and five options to expand the testing capability for radio service and maintenance, base station service and maintenance, and manufacturing test.

Key new capabilities will include addition of LTR (Logic Trunked Radio), as well as currently available MPT1327/EDACS (the LTR option will be available in October of 2005). MPT1327/EDACS is the trunked radio networks/emergency radio network standard.

These instruments also tout greater tracking generator isolation, a seamless RF generator, and audio and demodulation filters. An internal NiMH battery option permits up to 60 minutes of field use. Finally, the new boxes include sunlight-readable transflective color displays, and extension to their tones capability. The 2948B includes all the same features as the 2945B but with a low phase-noise signal generator added.

All of these analyzers permit remote control, provided with an RS-232 interface as standard. An IEEE-488.2 interface can be fitted where other instruments are required to operate in a system.

Finally, a Live Look and Listen feature lets you examine signals on the screen and demodulate them simultaneously. Intermittent interference can be isolated and signals identified. The trace can also be saved to memory along with time and date. This feature is useful when looking for rogue transmissions, especially on busy base-station sites.

Price and availability

A base configuration of the 2945B and 2948B communications service monitors starts at about $17,200. Options are priced between $250 and $1,000.

- Alex Mendelsohn

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