home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Media Share 9
/
MEDIASHARE_09.ISO
/
hamradio
/
amsat072.zip
/
AMSAT072.TXT
next >
Wrap
Text File
|
1993-03-17
|
7KB
|
161 lines
SB SAT @ AMSAT $ANS-072.01
AMSAT-NA OPERATIONS NET SCHEDULE
HR AMSAT NEWS SERVICE BULLETIN 072.01 FROM KD2BD
WALL TOWNSHIP, NJ MARCH 13, 1993
BID: $ANS-072.01
TO ALL RADIO AMATEURS BT
AMSAT-NA Operations Net Schedule
AMSAT Operations Nets are planned for the following times. Mode B nets
are conducted on AO-13 on a downlink frequency of 145.950 MHz and Mode J/L
on a downlink of 435.970 MHz.
Date UTC Mode Phs NCS Alt
21-Mar-93 0100 J 135 W5IU WA5ZIB
28-Mar-93 0100 B 51 WJ9F VE2LVC
03-Apr-93 2130 B 150 VE2LVC W9ODI
Any stations with information on current events would be most welcome.
In the unlikely event that either the NCS or the alternate do not call
on frequency, any participant is invited to act as net control.
**************************************
Slow Scan Television on Oscar 13
SSTV sessions will be held on UTC Saturdays and Sundays:
Mode J downlink 435.980
Mode B after J downlink 145.960
OPSNETS will take priority, look for sstv activity immediately after the
net. SSTVer's are invited to join the net to make schedules at other
times if desired.
[The AMSAT News Service would like to thank Dave Guimont for this news item.]
/EX
SB SAT @ AMSAT $ANS-072.02
STS-55 LAUNCH AND SAREX UPDATE
HR AMSAT NEWS SERVICE BULLETIN 072.02 FROM KD2BD
WALL TOWNSHIP, NJ MARCH 13, 1993
BID: $ANS-072.02
TO ALL RADIO AMATEURS BT
The following is a message from the SAREX working group:
The launch of the STS-55 Space Shuttle Columbia mission, carrying the
SAREX payload, has been delayed until no earlier than March 19,1993.
Since this launch date is still tentative, a new Keplerian Element set
has not been generated. The SAREX Working group would like to remind all
radio amateurs that Official SAREX Keplerian elements are provided
primarily by 2 SAREX team members: Gil Carman, WA5NOM, at the Johnson
Space Center (JSC) and Ron Parise, WA4SIR, at the Goddard Space Flight
Center (GSFC). To ensure accurate Shuttle orbit data only rely on SAREX
Keplerian Elements generated by one of these two individuals.
/EX
SB SAT @ AMSAT $ANS-072.03
ZRO TEST SCHEDULE
HR AMSAT NEWS SERVICE BULLETIN 072.03 FROM KD2BD
WALL TOWNSHIP, NJ MARCH 13, 1993
BID: $ANS-072.03
TO ALL RADIO AMATEURS BT
The ZRO Memorial Technical Achievement Award Program, or just "ZRO Test"
has a new schedule for March, April and May, 1993, via AMSAT-OSCAR-13.
This activity is a test of operating skill and equipment performance.
During a typical ZRO run, a control station will send numeric code groups
using CW at 10 words-per-minute. At the beginning of the run, uplink
power from the control station is set to match the general beacon downlink
strength. This is level "zero". The control operator will send and repeat
a random five-digit number, then lower his uplink power by 3 dB (half power)
and repeat the procedure with a new random number. This will continue to a
level 27 dB below the beacon (level "nine").
A participating listener monitors the downlink signals till he can no longer
copy the numbers. Those who can hear the beacon will qualify for the basic
award by copying the code group heard at level "zero". The challenge is to
improve home-station performance to a point where the lower-level downlink
signals can be copied (levels 6 through 9).
The following schedule of Mode "B" and "JL" ZRO tests were chosen for
convenient operating times and favorable squint angles. The "B" tests can
be heard on 145.840 MHz and the "JL" tests on 435.945 MHz. Ed N5EM will run
the "JL" tests while Andy WA5ZIB will continue with "B" runs.
Saturday Mar. 20, 1993 at 0210 UTC "JL"
Saturday Mar. 20, 1993 at 2330 UTC "B"
Monday Mar. 29, 1993 at 0340 UTC "JL"
Saturday Apr. 3, 1993 at 1930 UTC "B"
Monday Apr. 19, 1993 at 0310 UTC "JL"
Saturday Apr. 24, 1993 at 1900 UTC "B"
Saturday May 1, 1993 at 0115 UTC "JL"
Saturday May 1, 1993 at 2245 UTC "B"
Note that the dates and days are shown in "UTC", thus all the "JL" tests
occur in the late evening hours for those in North America. For example,
the March 20th UTC "JL" test is at 9:10 PM EST Friday night (the 19th).
Any changes will be announced as soon as possible via the AMSAT HF and
AO-13 Operations Nets.
Recently updated ZRO brochures are available from WA5ZIB, Andy MacAllister,
AMSAT V.P. User Operations, 14714 Knightsway Drive, Houston, TX 77083 for
an S.A.S.E. with two units of postage. The brochure characterizes test
procedures, means for obtaining certificates and gives some historical
background about the program. New brochures were not made for tests
conducted in October, November and December, 1992. Those with S.A.S.E.'s
on file will get a copy of the new brochure.
All listener reports with date of test and numbers copied should be sent to
WA5ZIB at the address above. A report will be returned verifying the level
of accurate reception.
[The AMSAT News Setvice would like to thank Andy MacAllister, WA5ZIB for
this bulletin item.]
/EX
SB SAT @ AMSAT $ANS-072.04
DoHop TEAM TEST RESULTS
HR AMSAT NEWS SERVICE BULLETIN 072.04 FROM KD2BD
WALL TOWNSHIP, NJ MARCH 13, 1993
BID: $ANS-072.04
TO ALL RADIO AMATEURS BT
On 3rd March 1993 the DoHop team consisting of G4CUO, G4ZHG, G0NKA, G6HMS
and G7MUB successfully conducted a trans-satellite qso through RS-14/O21
to Fuji/OSCAR-20. The predictions for the experiment were as follows :
LOCAL TCA RS-14 to FO-20
================= ===============================================
AOS LOS LAT LON LOC RANGE SEPARATION
FO-20 2225:39 2249:32 049.8N 011.7W JN59UT 1990kms 773kms approx.
RS-14 2231:48 2250:29 049.8N 002.4W JN19ET 1078kms
FREQS USED: U/Link X/Link D/Link
======== ========== ==========
435.016 MHz 145.983 MHz 435.817 MHz
The Uplink remained fixed while the X/Link and D/Link were subject to
doppler shift which was measured by G4CUO for further analysis.
The mode used was F3e which transponded well through FO-20. G6HMS's TX
was RXed by G4CUO at 55 well after satellite TCA but the tape recording
has yet to be related to time.
Other stations using RS-14 were also heard, and the digitally systhesized
voice message from Junior Torres de Castro PY2BJO was RXed at 57 via FO-20.
DoHop 2 using RS-14 > RS-10 planned for 28th March 1993.
[The AMSAT News Service would like to thank Ian, G0NKA for this bulletin
item.]
/EX