Field Day Satellite Operations for SF Bay Area

Amateur radio operators have their own network of satellites for space-based communications. Fourth weekend of every June is Field Day where ham radio people dedicate their operations in the field instead of at home. A number of satellites including the International Space Station (crew will most likely be active on field day).

Following tables are information put into html form. Original source is from Emily Clarke W0EEC, AMSAT Area Coordinator.
PDF document for Field Day Satellite Pass Predictions
AMSAT webpage: http://www.amsat.org

From: Emily Clarke w0eec @ amsat.org
Date: Tue, 21 Jun 2005
Subject: Field Day Satellite Passes

I’ve attached a list of times and modes for voice satellite passes for Field Day in PDF format which contains SO-50, the ISS and the digital birds for those who might like to use them for their APRS or packet demonstrations.

I hope to see you all on the satellites during field day!

Remember, your first satellite contact counts for a bonus of 100 points. It is recommended that you only make one contact - other contacts only count for 1 point. By agreement of the Fine Business operators once you get your 100 point bonus please suspend sat operations and give the other stations a chance. However please monitor the satellite passes to the west and north (when a satellite is out over the Pacific Ocean) and listen for Hawaiian and Alaskan stations. If you hear a KH or KL station please respond if you don’t hear any other station try to work them. It may be their only chance to make a contact.

The ISS crew will most likely be active on field day. This is an exciting contact, but there are some considerations. Per the rules, an ISS contact is not a satellite contact - it is a simplex contact even though you are using split frequencies. It makes sense when you think about it - you are just contacting someone who is “air mobile” even though they are 300 miles away. Also, remember that the ISS has very high Doppler rates, so you may not wish to try unless you are computer controlled.

If you need any advice on any satellite contacts, or if your club would like a presentation in the future, feel free to email me.

73, Emily
W0EEC - CM87tm
AMSAT Area Coordinator - San Francisco Bay Area
Join AMSAT! http://www.amsat.org

Here are predictions and frequencies for applicable spacecraft for the SF Bay Area. Times are in Zulu or UTC, subtract 8 hours to get Pacific Time.

Field Day Satellite Predictions for the SF Bay Area
Time is in Zulu (UTC)        Downlink frequencies are in parenthesis ( ), convenient entries into scanners.

Date (Z)	AOS (Z)	LOS (Z)	Duration	Az @ AOS	Max El	Az @ LOS
NO-44 PCSat Mode V Simplex APRS, Daylight Only (downlink 144.390 MHz FM)
6/26/2005	3:53:39	4:06:15	0:12:35	119°	15°	8°
6/26/2005	5:30:33	5:45:54	0:15:20	173°	67°	345°
6/26/2005	17:40:47	17:54:54	0:14:06	19°	47°	179°
6/26/2005	19:20:08	19:32:27	0:12:19	355°	18°	236°
AO-27 AMRAD OSCAR 27 Mode V/U FM (downlink 436.795 MHz FM)
6/26/2005	0:28:39	0:43:42	0:15:02	155°	60°	352°
6/26/2005	2:09:49	2:22:28	0:12:39	212°	15°	326°
AO-51 AMSAT-OSCAR 51 Mode V/S FM (downlink 435.300 MHz FM)
6/25/2005	17:59:47	18:11:42	0:11:55	28°	22°	162°
6/25/2005	19:35:51	19:48:04	0:12:13	360°	29°	219°
6/26/2005	4:54:09	5:04:53	0:10:44	123°	14°	9°
6/26/2005	6:29:00	6:41:44	0:12:44	181°	45°	341°
International Space Station Mode U/V (downlink 145.800 MHz FM)
6/26/2005	2:15:37	2:34:38	0:19:01	115°	23°	355°
6/26/2005	4:05:49	4:28:12	0:22:23	164°	81°	343°
6/26/2005	6:02:12	6:19:30	0:17:18	218°	14°	323°
6/26/2005	16:09:51	16:31:10	0:21:18	24°	39°	173°
GO-32 Gurwin TechSat1b Mode V/U 9600 Baud PBBS (downlink 435.225 FM 9600 Baud FSK)
6/26/2005	3:49:25	4:08:22	0:18:56	152°	58°	353°
6/26/2005	5:35:29	5:53:02	0:17:33	201°	25°	332°
6/26/2005	16:47:00	17:02:04	0:15:03	18°	52°	181°
SO-50 Saudi-OSCAR 50 Mode V/U FM (downlink 436.795 MHz FM)
6/25/2005	22:41:42	22:56:26	0:14:44	206°	80°	32°
6/26/2005	0:24:05	0:36:46	0:12:41	258°	16°	17°
6/26/2005	7:16:44	7:30:42	0:13:57	335°	43°	133°
6/26/2005	8:57:58	9:10:25	0:12:27	313°	20°	187°
FO-29 Fuji OSCAR 29 Mode V/U SSB (downlink 435.800 to 435.900 MHz CW/USB)
6/26/2005	6:07:13	6:16:58	0:09:45	215°	42°	56°
6/26/2005	7:42:54	7:52:05	0:09:11	264°	18°	39°
6/26/2005	9:20:12	9:27:18	0:07:05	306°	6°	37°
6/26/2005	10:56:41	11:04:02	0:07:20	324°	7°	59°
6/26/2005	12:31:46	12:41:14	0:09:28	319°	23°	102°
6/26/2005	14:07:00	14:16:32	0:09:32	300°	28°	153°
AO-7 AMSAT OSCAR 7 Mode U/V or V/10M SSB (downlink 145.975 to 145.925 MHz CW/USB inverting)
6/25/2005	19:31:11	19:44:29	0:13:17	356°	19°	235°
6/26/2005	5:10:01	5:25:17	0:15:16	158°	66°	351°
6/26/2005	6:51:50	7:04:18	0:12:28	214°	14°	325°
6/26/2005	17:28:36	17:43:10	0:14:34	24°	31°	169°
VO-52 VUSat-OSCAR 52 - Mode U/V SSB (downlink 145.870-145.930 USB/CW inverting)
6/26/2005	3:18:06	3:31:20	0:13:14	163°	17°	46°
6/26/2005	13:49:56	14:05:40	0:15:44	334°	73°	149°
6/26/2005	15:34:25	15:46:47	0:12:22	310°	13°	204°

Satellite Frequencies


NO-44 PCSat

Uplink/Downlink	145.827 MHz FM 1200 Baud AFSK
Aux Uplink	435.250 MHz FM 9600 Baud AFSK
APRS Downlink	144.390 MHz FM (Region 2)

AO-27 AMRAD OSCAR 27

Uplink	145.850 MHz FM
Downlink	436.795 MHz FM

AO-51 AMSAT-OSCAR 51

Analog Uplink:	145.920 MHz FM (PL - 67Hz)
	145.880 MHz FM QRP (no PL)
	1268.700 MHz FM (PL - 67Hz)
Analog Downlink:	435.300 MHz FM
	2401.200 MHz FM
PSK-31 Uplink	28.140 MHz USB
Digital Uplink:	145.860 MHz 9600 bps, AX.25
	1268.700 MHz 9600 bps AX.25
Digital Downlink:	435.150 MHz 9600 bps, AX.25
	2401.200 MHz 38,400 bps, AX.25
Broadcast Callsign:	PECHO-11
BBS Callsign:	PECHO-12

International Space Station

Regions 2 & 3 2m uplink	144.490 MHz FM
Cross Band Repeat Uplink	437.800 MHz FM
Worldwide downlink (All modes)	145.800 MHz FM
Worlwide Packet uplink	145.990 MHz FM
US Voice Callsign	NA1SS
Russian Voice Callsigns	RS0ISS, RZ3DZR
UI Digipeater Callsign	ARISS
Bulletin Board Callsign	RS0ISS-11
Commnader Leroy Chiao, KE5BRW
Flight Engineer Salizhan Sharipov

GO-32 Gurwin TechSat1b

Digital Downlink	435.225 FM 9600 Baud FSK
Digital Uplinks	145.850, 145.890 FM 9600 Baud FSK
	1269.700, 1269.800, 1269.900 (not operational)
Beacon Callsign	4XTECH-11
BBS Callsign	4XTECH-12

SO-50 Saudi-OSCAR 50

Uplink	145.850 MHz FM
Downlink	436.795 MHz FM

SO-50 carries several experiments, including a mode J FM amateur repeater experiment operating on 145.850 MHz uplink and 436.800 MHz downlink. SO-50 is operational for 10 minutes when turned on by the following procedure:
1) Transmit for 1-2 seconds on 145.850 MHz with a tone of 74.4 Hz to arm the 10 minute timer on board the spacecraft.
2) Next transmit on 145.850 MHz (FM Voice) using 67.0 Hz to key the repeater on and off within the 10 Minute window.
Note: Sending the 74.4 tone again within the 10 minute window will reset the 10 minute timer.

FO-29 Fuji OSCAR 29

Analog Uplink	146.000 to 145.900 MHz CW/LSB
Analog downlink	435.800 to 435.900 MHz CW/USB
Beacon	435.795 MHz (normally CW telemetry)
Digital Uplink	145.850, 145.870, 145.910 MHz FM
Digital Downlink	435.910 MHz 1200 baud BPSK or 9600 baud FSK
Digitalker	435.910 MHz FM

AO-7 AMSAT OSCAR 7

Mode B and C Uplink	432.125 to 432.175 MHz CW/LSB
Mode B and C Downlink	145.975 to 145.925 MHz CW/USB (inverting)
Mode B Beacon	145.9775 MHz (CW telemetry)
Mode C Beacon	435.100 MHz (intermittent)
Mode A Uplink	145.850 to 145.950 MHz CW/USB
Mode A Downlink	29.40 - 29.50 MHz CW/USB (non-inverting)
Mode A Beacon	29.502 MHz (CW telemetry)

VO-52 VUSat-OSCAR 52

Uplink	435.220-435.280 MHz LSB/CW
Downlink	145.870-145.930 USB/CW (Inverting)
Beacon	145.936 Unmodulated Carrier
	145.860 Telemetry

Original source documents,
PDF document for Field Day Satellite Pass Predictions
AMSAT webpage: http://www.amsat.org

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