Old Satellite Retooled For New Use
NEWINGTON, CT, Feb 24, 2000--UO-14 is proving that you can teach an old bird new tricks. The venerable British satellite recently was switched to FM repeater mode, and reports already are coming in from hams who've worked it using pretty modest equipment.
The satellite's controller Chris Jackson, G7UPN/ZL2TPO, says UO-14 was launched in January 1990 and spent its first 18 months in orbit operating as an amateur store-and-forward satellite, prior to the launch of UO-22. It was then switched for use by Volunteers In Technical Assistance, who used it for messaging into Africa.
"Since the computer which is used for store-and-forward communications is no longer able to perform that task, UO-14 is no longer usable in this mode," Jackson says. "It is, however, possible to use the satellite as a single-channel FM voice repeater, and I have just configured the satellite to do this."
The satellite works as an "FM bent pipe repeater satellite" in full duplex. Operators with full-duplex transceivers will be able to hear their downlink signal as they transmit. Half-duplex operation also will work satisfactorily.
The uplink is 145.975 MHz, and the downlink is 435.070 MHz. Jackson says he plans to leave the satellite in FM mode for the next few weeks. "If it is useful, then I will probably leave it running," he said. "If it isn't used, it will be switched to transmitting telemetry."
Houston AMSAT Coordinator Bruce Paige, KK5DO, says no more than 5 W is required to make a contact with UO-14, and some have made it with as little as 1.5 W. "It should be a very suitable bird for those with an H-T and a rubber duck," he said.
"Cool satellite!" was the reaction of W1AW Station Manager Joe Carcia, NJ1Q, who worked 11 stations during a "very short" 10° pass today. "Some of the stations sounded like they were next door!"
Carcia said he had a pileup going, and his best DX was VE8EV in CP38.
Page last modified: 01:54 PM, 24 Feb 2000 ET
Page author: awextra@arrl.org
Copyright © 2000, American Radio Relay League, Inc. All Rights Reserved.
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