[Date Prev][Date Next][Thread Prev][Thread Next] - [Date Index][Thread Index][Author Index]
Re: FM Satellite status
Here is a beginner's one line summary of currently active FM birds that
you can receive on your Mobile FM rig and mobile vertical whip antenna.
Two new items of significance:
1) SUNSAT now operates APRS digipeating on all non-voice sked passes!
2) Kenwood announced an upgrade to THD7 HT to rec/display 9600 baud
APRS. THus it can monitor these satellite downlinks in your hand.
SAT DOWNLNK UPLINK S MODE COMMENTS
---- ------- ------- - --------------- ----------------------------
MIR 145.985 145.985 9+FM crew voice Voice and SSTV activity rptd
UO11 145.825 4 FM Bell-202 ASCII Telemetry only
UO14 435.070 145.975 5 FM Voice rptr lots of fun every pass
AO27 436.795 145.850 3 FM Voice rptr days only but fun
SO35 145.825 436.290 8 FM Voice rptr on scheduled passes only
SO35 145.825 436.290 8 9600 bd FSK digi ON for APRS on non-voice passes
UO22 435.120 145.900 3 9600 bd FSK BBS ON
KO23 435.170 145.900 4 9600 bd FSK BBS ON but with probs in eclipse
KO25 436.500 145.980 3 9600 bd FSK BBS ON
TO31 436.925 145.925 5 9600 bd FSK Images ON
Between the hours of about 6 AM to noon and 6 PM to midnight local SUN
time there is usually one of these birds in view for a few minutes to keep
you entertained while traveling. UHF requires +/- 5 or 10 KHz Doppler
tuning. The "S" column is a subjective signal strength assessment. A
20" vertical whip in the center of your car roof will give you success as
shown below. This acts as a 3/4 wave on UHF giving almost 8 dBi above
30 degrees over a good groundplane.
SIG RECEIVE RANGE
--- ------------------
As a rough approximation consider this table 9 Horizon to Horizon
which I have subjectively determined after 8 5 deg and above
3 months of daily monitoring. Home stations 7 10 deg and above
with 50' of RG 8 should subtract abt 3 from 6 15 deg and above
the signals and 5/8 or dual band, or "gain" 5 20 deg and above
antennas should also subtract about 2. 4 25 deg and above
3 30 deg and above
The PACSATs do not currently digipeat UI 2 3 ele beam required
packets, but you can still see status and 1 6 ele beam required
telemetry and the USER lists on your Kenwood
data radios or any radio with 9600 baud TNC. For more info on mobile
satellite operations see http://web.usna.navy.mil/~bruninga/astars.html
NOTES: Miles Mann reports Cosmonauts sleep between 1900z to 0400z.
Errors, omissions, corrections welcome. I will re-post this when ever I
hear of changes in status. For more detail, of course, read the AMSAT
News Service bulletins and AMSAT WEB pages http://www.amsat.org
de WB4APR, Bob
----
Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org
AMSAT Home