eHam.net - Amateur Radio (Ham Radio) Community

Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net



[Articles Home]  [Add Article]  

AO-7 turns 30!

from The ARRL Letter, Vol 23, No 03 on January 17, 2004
Website: http://www.arrl.org/
View comments about this article!

AO-7 turns 30!

The oldest working satellite, AO-7, will mark its 30th year in space during 2004. The satellite, which came back to life in mid-2002, was launched November 15, 1974, and it remained operational until 1981, when it went dark due to battery failure. It remained dormant--and largely forgotten--until it suddenly and unexpectedly sprang back to life. AO-7 is in a 1460 km orbit, and AMSAT-NA considers the satellite "semi-operational." Jan King, W3GEY reports AO-7 http://www.amsat.org/amsat/news/wsr.html#ao-7 is running solely from its solar panels, so it will only work when in sunlight. It has a Mode A uplink passband at 145.850 to 145.950 MHz and a downlink passband at 29.400 to 29.500 MHz (CW/USB). Beacons are at 29.502, 145.972, 435.1 and 2304.1 MHz. Ground controllers have only been able to activate some command functions. It also contains a Mode B transponder. To mark the satellite's 30th anniversary, AMSAT-NA will make available a special commemorative QSL card. AMSAT-NA Board Member and Awards Manager Bruce Paige, KK5DO, reports additional information will be available on the AMSAT-NA Web site http://www.amsat.org/.

Source:

The ARRL Letter Vol. 23, No. 03 January 16, 2004

Member Comments:
This article has expired. No more comments may be added.
 
AO-7 turns 30!  
by K7VO on January 18, 2004 Mail this to a friend!
It's great that this old bird is still working, and it is a real accomplishment for those who put it in orbit. BUT... looking at the logs I see lots of people working through AO-7 via the mode B transponder. Do these folks not read the AMSAT website? Or is it perhaps that they don't care that their transmissions are illegal? 432.1 is, according to the FCC anyway, not authorized for use in the Amateur Satellite Service.

Have I missed something? Has something been resolved to make this legal?
 
RE: AO-7 turns 30!  
by K9PO on January 19, 2004 Mail this to a friend!
You missed something. AMSAT reported that a waiver was granted soon after the sat sub bands were moved, they also produced that waiver as proof. AMSAT recomended that sat operators give way to the weak signal ops on 70cm
 
AO-7 turns 30!  
by SSBDX on January 25, 2004 Mail this to a friend!
Why are satallites called "birds"? They are satellites. They do not have wings. They are not alive. Same idea with turkeys. They are turkeys, not birds. Do you say you are cooking a cow when frying a hamburger? No wonder English is bad in the US.
 
RE: AO-7 turns 30!  
by N4HY on January 26, 2004 Mail this to a friend!
AO-7 was a duly licensed amateur radio station and came into existence before the amateur satellite service band restrictions were put into place. Rich Zwirko, K1HTV, has maintained this license through multiple renewals! AO-7, and those who are licensed amateur radio operators in the U.S. (I do not know about others) can operate it legally.

Bob
N4HY
 
RE: AO-7 turns 30!  
by WW1Z on January 29, 2004 Mail this to a friend!
Referring to then as birds is an old tradition that goes back to the earliest days of the space program, even predating ham satellites. Kind of like calling amateur radio operators "hams". John
 
Email Subscription
You are not subscribed to discussions on this article.

Subscribe!
My Subscriptions
Subscriptions Help

Other News Articles
Laketown Park in Kenner to Host Coast Guard Auxiliary Radio Day:
Nationwide Amateur Radio Operators Simulated Emergency Testing Oct. 11:
Ham Radio is Still the Old Standby In Emergency Situations:
Amateur Radio Operators to Host Oct. 4 Expo in Georgetown:
Wilkinsburg Ceremony to Commemorate World's First Wireless Broadcast: