SatNOGS DB - OSCAR 7

OSCAR 7

Mission information

Name: OSCAR 7
Alternate Names: AO-7, AMSAT OSCAR 7
Satellite ID: HHSS-6325-1344-4603-7774
NORAD ID: 7530
Website: https://www.amsat.org/two-way-satellites/ao-7/
Country of Origin: United States of America

Status

Operational

Satellite is in orbit

Reception

Status

Unknown

Image

Mission timeline

Launch Date: 1974-11-15T00:00:00+00:00

Description

AMSAT-OSCAR 7 was launched November 15, 1974 by a Delta 2310 launcher from Vandenberg Air Force Base, Lompoc, California. AMSAT-OSCAR 7 contains two basic experimental repeater packages, redundant command systems, two experimental telemetry systems, and a store-and-forward message storage unit. The spacecraft is solar powered, weighs 65 pounds, and had a three-year anticipated lifetime at the time it was launched, but it has far outlived this expectation. It contains beacons on 29.50, 145.975, 435.10 and 2304.1 MHz. AO-7 became non-operational in mid 1981 due to battery failure . In 2002 one of the shorted batteries became an open circuit and now the spacecraft is able to run off solar panels.

SatNOGS Links

Network Observations

Mode U TLM Beacon

Type: Transmitter
Downlink Mode: CW
Downlink Frequency: 435100000.0
Downlink Drift: 435.106 MHz (6000 Hz or 13790 ppb)

Updated by fredy and reviewed on 2019-06-14 14:06 by fredy

Mode U/V (B) TLM Beacon

Type: Transmitter
Downlink Mode: CW
Downlink Frequency: 145977500.0
Downlink Drift: 145.973 MHz (-4500 Hz or -30827 ppb)

Updated by fredy and reviewed on 2019-06-14 14:15 by fredy

Mode V/A (A) Lin SSB

Type: Transponder
Service: Amateur
Downlink Mode: USB
Downlink Low Frequency: 29400000
Downlink High Frequency: 29500000
Uplink Mode: USB
Uplink Low Frequency: 145850000
Uplink High Frequency: 145850000

Updated by fredy and reviewed on 2019-11-07 00:01 by fredy

Mode V/A (A) Lin CW

Type: Transponder
Downlink Mode: CW
Downlink Low Frequency: 29400000
Downlink High Frequency: 29500000
Uplink Mode: CW
Uplink Low Frequency: 145850000
Uplink High Frequency: 145850000

Updated by fredy and reviewed on 2019-11-07 00:01 by fredy

Mode U/V (B) Lin

Type: Transponder
Downlink Mode: USB
Downlink Low Frequency: 145925000
Downlink High Frequency: 145975000
Uplink Mode: LSB
Uplink Low Frequency: 432125000
Uplink High Frequency: 432125000
Inverted: Yes

Updated by frank and reviewed on 2020-08-08 21:54 by PE0SAT

Mode V/A (A) TLM Beacon

Type: Transmitter
Service: Amateur
Downlink Mode: CW
Downlink Frequency: 29502000.0

Updated by wd4va and reviewed on 2022-03-17 14:25 by fredy

13 cm Beacon (40mW)

Type: Transmitter
Service: Amateur
Downlink Mode: CW
Downlink Frequency: 2304100000.0

Updated by ENSFNM and reviewed on 2022-11-29 08:04 by fredy

Show invalid transmitters

Mode U/V Beacon (current)

Type: Transmitter
Downlink Mode: CW
Downlink Frequency: 145973500.0
Baud: 20

Updated by fredy and reviewed on 2019-06-14 14:15 by fredy

PE0SAT - CW Beacon

Type: Transmitter
Downlink Mode: CW
Downlink Frequency: 145972000.0

Updated by fredy and reviewed on 2019-06-14 14:15 by fredy

Most Recent Observers (last 24h)

Observer	Latest Data
LU3ARN-GF05sk	2026-09-29 23:29:47 UTC
KC1OCA UC-4364-531R (UHF)-FN32uc	2026-09-29 14:38:46 UTC

Data Frames Decoded - 30 Days

No Decoders Found

Help us develop a decoder, you can find instructions at this wiki link

Orbital Elements

Latest Two-Line Element (TLE)

TLE Source: Space-Track.org

TLE Updated: 2026-09-30 01:23:31 UTC

TLE Set

1  7530U 74089B   26272.61151509 -.00000049  00000-0 -14457-4 0  9990
2  7530 101.9913 286.9484 0011954 292.7085 188.9078 12.53699852373605

Satellite Suggestion History

Date of submission	Date of review	User	Reviewer	Verdict
2022-11-29 04:49	2022-11-29 12:13	ve3rqx	fredy	Approved
2021-10-14 08:49	2021-10-14 08:49	pierros	pierros	Approved
2021-10-13 07:43	2021-10-14 08:48	ENSFNM	pierros	Approved
2021-07-21 10:11	2021-07-21 10:11	-	-	Approved

Transmitter Suggestion History

Description	UUID	Date of submission	Date of review	User	Reviewer	Verdict	Status
Mode U/V Beacon	YCcdJmZyt62cx8R8fv8mTe	2019-04-18 05:39	2019-04-18 05:39	-	-	Approved	active
Mode U Beacon	epmfL93RZ2Vf5WKK4X2auf	2019-04-18 05:39	2019-04-18 05:39	-	-	Approved	active
Mode V/A (A) Lin	Pfwywu74BnMu72ykCicETX	2019-04-18 05:39	2019-04-18 05:39	-	-	Approved	active
Mode U/V (B) Lin	uLfAhJaZJUWmA9Sik8yQ2m	2019-04-18 05:39	2019-04-18 05:39	-	-	Approved	active
PE0SAT - CW Beacon	fzWGFa9mewYwf6DWHhZ7BD	2019-04-18 05:39	2019-04-18 05:39	-	-	Approved	active
Mode U/V Beacon (current)	m5KjkZrkhcRzdDhivtHrNA	2019-04-18 05:39	2019-04-18 05:39	-	-	Approved	active
Mode V/A (A) Lin	Pfwywu74BnMu72ykCicETX	2019-06-14 13:46	2019-06-14 13:53	fredy	fredy	Approved	active
Mode V/A (A) TLM Beacon	zs4j2L74uEoreuVZQWfGqX	2019-06-14 13:48	2019-06-14 13:53	fredy	fredy	Approved	active
Mode U/V (B) Lin	uLfAhJaZJUWmA9Sik8yQ2m	2019-06-14 13:49	2019-06-14 13:53	fredy	fredy	Approved	active
Mode U/V (B) TLM Beacon	YCcdJmZyt62cx8R8fv8mTe	2019-06-14 13:50	2019-06-14 13:53	fredy	fredy	Approved	active
Mode U TLM Beacon	epmfL93RZ2Vf5WKK4X2auf	2019-06-14 13:51	2019-06-14 13:53	fredy	fredy	Approved	active
Mode U TLM Beacon	epmfL93RZ2Vf5WKK4X2auf	2019-06-14 14:06	2019-06-14 14:06	fredy	fredy	Approved	active
Mode U/V Beacon (current)	m5KjkZrkhcRzdDhivtHrNA	2019-06-14 14:13	2019-06-14 14:15	fredy	fredy	Approved	invalid
PE0SAT - CW Beacon	fzWGFa9mewYwf6DWHhZ7BD	2019-06-14 14:13	2019-06-14 14:15	fredy	fredy	Approved	invalid
Mode U/V (B) TLM Beacon	YCcdJmZyt62cx8R8fv8mTe	2019-06-14 14:15	2019-06-14 14:15	fredy	fredy	Approved	active
Mode V/A (A) Lin SSB	aBrZNKzhZH4gguH8F75o86	2019-11-06 20:55	2019-11-07 00:01	fredy	fredy	Approved	active
Mode V/A (A) Lin CW	Pfwywu74BnMu72ykCicETX	2019-11-06 20:56	2019-11-07 00:01	fredy	fredy	Approved	active
Mode U/V (B) Lin	uLfAhJaZJUWmA9Sik8yQ2m	2020-08-06 19:02	2020-08-08 21:54	frank	PE0SAT	Approved	active
13 cm Beacon	JH4TSATzvpNJ46SkgH59Vd	2021-10-13 07:49	2022-03-17 14:25	ENSFNM	fredy	Approved	active
Mode V/A (A) TLM Beacon	zs4j2L74uEoreuVZQWfGqX	2022-03-17 02:59	2022-03-17 14:25	wd4va	fredy	Approved	active
13 cm Beacon (40mW)	JH4TSATzvpNJ46SkgH59Vd	2022-07-08 06:56	2022-11-29 08:04	ENSFNM	fredy	Approved	active