AO-7

Satellite Roster

Note: Supplimental feature and frequency information was copied from each satellite's AMSAT info page.

AO-7 | AO-10 | UO-11 | RS-15 | AO-16 | LO-19 | FO-20 | UO-22 | IO-26 | AO-27 | PO-28 | FO-29 | GO-32 | AO-40 | NO-44 | NO-45 | SO-41 | SO-42 | MO-46 | SO-50 | AO-51 |

AMSAT Satellite Status | Recent Activity

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AO-7

• Info: http://www.amsat.org/amsat/sats/n7hpr/ao7.html
• Status: http://www.amsat.org/amsat/news/wsr.html#ao-7
• W0EEC's Site: http://www.experthams.net/ao7
• Using AO-7: http://www.emilyshouse.com/experthams/ao7/usage.html

Note: AO-7 is functioning on solar panels only (no batteries). This means AO-7 will only function when in the sun (meaning you are too ). As AO-7 boots up it will randomly select mode A or B. For more info read, http://www.amsat.org/amsat/news/wsr.html#ao-7.

• Modes: A, B, and C
• Beacons:

• 29.502 MHz (200 mw) Used in conjunction with Mode A
• 145.972 MHz (200 mw) Used in conjunction with Mode B and C [low power Mode B]
• 435.100 MHz (intermittent problem -- switches between 400 mw and 10 mw)
• 2304.1 MHz (40 mw) Must be commanded on. Auto off after 15 minutes. Requires STA to operate.

• Linear Transponders:

• Transponder I: Mode A
• Type: linear, non-inverting
• Uplink: 145.850 - 145.950 MHz
• Downlink: 29.400 - 29.500 MHz
• Translation Equation:
  Downlink (MHz) = Uplink (MHz) - 116.450 MHz +/- Doppler
• Output Power: 1.3 watts PEP (start of life)
• Transponder II: Mode B and Mode C (low power)
• Type: linear, inverting
• Uplink: 432.125 - 432.175 MHz *See Note
• Downlink: 145.975 - 145.925 MHz
• Translation Equation:
  Downlink (MHz) = 578.100 - uplink (MHz) +/- Doppler
• Output Power: 8 watts PEP Mode B (start of life), 2.5 watts PEP Mode C

Note: Due to changes in Amateur Service and Amateur Satellite Service there are questions as to legality of Amateurs transmitting to AO-7. The uplink frequency predates the WARC '79 allocation of 435-438 MHz by the ITU for the Amateur Satellite Service and places the uplink in 70cm weak signal segment.

Potential users should realize that when they are uplinking to a satellite, they are no longer operating in the Amateur Service but instead operating in the Amateur Satellite Service. Thus they are subject to Amateur Satellite Service rules. Therefore uplinking to AO-7 is possibly illegal since the Amateur Satellite Service is not permitted at 432.1 MHz. Also, since the IARU bandplan has the 432.1 MHz range earmarked as "weak signal" in all three Regions, it would appear that all users trying to access the uplink are also outside the Amateur Satellite Service rules and regulations.

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Log

Date yymmdd	Time hhmm	Mode	Remarks
040422	0216	A	Wow - I heard phone activity mid-band - very cool. Just coming out of eclipse
040422	0409	B	Need pre-amp - heard phone activity mid-band. Just coming out of eclipse
040422	1820	A	Noticed TRX was tracking and tuned in - heard phone activity.