At 06:50 UTC on November 23, 2017, AMSAT Engineering officially commissioned AO-91 (RadFxSat/Fox-1B). AMSAT Vice-President Engineering Jerry Buxton, N0JY, turned over operation to AMSAT Operations in a QSO on the AO-91 transponder with Mark Hammond, N8MH, of the AMSAT Operations team during the pass over the Eastern United States.
N8MH responded and declared AO-91 open for amateur use!
AO-91 was built as a partnership with Vanderbilt University ISDE and hosts four payloads for the study of radiation effects on commercial off the shelf components. The satellite was launched on November 18, 2017 as part of the ELaNa XIV mission, secondary payloads aboard the Delta II rocket that carried the Joint Polar Satellite System (JPSS-1) satellite to orbit. AO-91 also features the Fox-1 style FM U/v repeater with an uplink on 435.250 MHz (67.0 Hz CTCSS) and a downlink on 145.960 MHz. Satellite and experiment telemetry are downlinked via the “DUV” subaudible telemetry stream and can be decoded with the FoxTelem software.
Radio Programming Chart
|AO-91 Doppler Shift Correction|
|Memory||Your Transmit Frequency(With 67 Hz Tone)||Your Receive Frequency|
|Acquisition of Signal (AOS)||435.240 MHz||145.960 MHz|
|Approaching||435.245 MHz||145.960 MHz|
|Time of Closest Approach (TCA)||435.250 MHz||145.960 MHz|
|Departing||435.255 MHz||145.960 MHz|
|Loss of Signal (LOS)||435.260 MHz||145.960 MHz|
Icom Co., Ltd. (Headquarters: Osaka-shi Hirano Ward, President: Tsutomu Fukui) will release the HF + 50 MHz fixed amateur radio transceiver IC-7610 fr... Read more
“We demonstrate the two major new features of the latest version of Yaesu’s “991” series, the FT-991A. Watch the colour screen... Read more
Bandwidth at it’s broadest! VSWR 2:1 or better at band edges on 10-40 meters. Up to 100 kHz. on 75/80 meters. Solid one inch fiberglass trap f... Read more
Ranko 4O3A has taken antenna switches into the 21st century! Antenna Genius 8×2 is the first in a new antenna switch line from 4O3A Signature sit... Read more
The RS-HFIQ is a high performance Software Defined Radio (SDR) 5W Transceiver for CW, SSB, AM, FM and digital modes. Product Summary Not just another... Read more
Easy to build, single-board design, 10 x 8cm, all are controls board-mounted Professional quality double-sided, through-hole plated, silk-screen print... Read more
In this video we run through setting up a bluetooth CAT control for the Yaesu FT-817, using an Android Tablet, bluetooth interface, and Yaesus... Read more