[amsat-bb] AO-51

[Robert Thirkettle <rob.thirkettle@xxxxxxxxxxxxxxxx>]

Hi
	I am interested in hearing about what equipment people are using
to receive the 9k6 telemetry with. 
  
I am using a IC-706MK2 with a KPC 9612 plus and a 8 element yagi fed
with 15 meters of 9913 coax it is pointed manually. The received signal
is still not that very strong. 

I have a program that works out simple path losses and you find it
aggress with what I am seeing from the bird some people that are not
coping the sat I think the problem is not enough gain in their antennas
plus probably to many losses in coax etc. 

Frequency MHz    Distance KM	 Ant gain dB   Power dBm   Coax Loss dB
   435		 1500	          0	          28	         2

							
Total Loss in dBm				
-122.2916103				

As you see things get very marginal and with the sat over head a lot of
antennas don't have a good capture. Below is some of the data I have
captured. 

ACBLS-8  > PACBLS-8 :PACBLS S Meter = 55 
PACB-11   > PBLIST-0 :PB: Empty. 
PACB-11   > STATUS-0 :B: 2815360 
PACB-11   > PBLIST-0 :PB: Empty. 
PACBLS-8  > PACBLS-8 :PACBLS S Meter = 55 
PACBLS-8  > PACBLS-8 :PACBLS S Meter = 55 
PACB-12   > BBSTAT-0 :Open ABCD: 
PACB-11   > STATUS-0 :B: 2815360 
PACB-1    > TIME-1   :PHT: uptime is 008/07:36:14.  Time is Sun Jul 11
11:05:38 2004 
PACB-1    > TLMI-1   :<binary tlm> 
PACB-1    > TLMS-1   :C0:05 C1:44 C2:76 C3:27 C4:04 
PACB-1    > BCR-1    :BCR: batv=1306 bati=187 batsense=1366 battop=1306
batlow=1306 batt1=561 batt2=1125 sav=62 sai=4
 
PACB-1    > AMSATN-1 :July 11, 2004.  PLEASE DO NOT TRANSMIT TO
ECHO...AO-51 is NOT open for general use.  First test of 38k4 downlink
was successful.  WD0E & KE4AZN 
PACB-1    > LSTAT-0  :I P:0x13AA o:0 l:29467 f:29467, d:0 st:0 e:01 
PACB-11   > PBLIST-0 :PB: Empty. 
PACBLS-8  > PACBLS-8 :PACBLS S Meter = 55 
PACB-11   > PBLIST-0 :PB: Empty. 
PACB-11   > PBLIST-0 :PB: Empty. 
PACBLS-8  > PACBLS-8 :PACBLS S Meter = 55 
PACB-11   > PBLIST-0 :PB: Empty. 
PACB-11   > STATUS-0 :B: 2815360 
PACB-11   > PBLIST-0 :PB: Empty. 
PACB-11   > PBLIST-0 :PB: Empty. 
PACB-11   > PBLIST-0 :PB: Empty. 
PACBLS-8  > PACBLS-8 :PACBLS S Meter = 55 
PACB-11   > PBLIST-0 :PB: Empty. 
PACB-1    > TIME-1   :PHT: uptime is 008/07:38:14.  Time is Sun Jul 11
11:07:38 2004 
PACB-1    > TLMI-1   :<binary tlm> 
PACB-1    > TLMS-1   :C0:05 C1:44 C2:76 C3:27 C4:04 
PACB-1    > BCR-1    :BCR: batv=1298 bati=186 batsense=1367 battop=1298
batlow=1298 batt1=557 batt2=1118 sav=60 sai=3
 
PACB-1    > LSTAT-0  :I P:0x13AA o:0 l:29467 f:29467, d:0 st:0 e:01 
PACB-12   > BBSTAT-0 :Open ABCD: 
PACB-11   > STATUS-0 :B: 2815360 
PACB-11   > PBLIST-0 :PB: Empty. 
PACBLS-8  > PACBLS-8 :PACBLS S Meter = 55 
PACB-11   > PBLIST-0 :PB: Empty. 
PACB-11   > PBLIST-0 :PB: Empty. 
PACB-11   > PBLIST-0 :PB: Empty. 
PACB-11   > PBLIST-0 :PB: Empty. 
PACB-11   > PBLIST-0 :PB: Empty. 
PACB-12   > BBSTAT-0 :Open ABCD: 
PACB-11   > PBLIST-0 :PB: Empty. 
PACB-11   > PBLIST-0 :PB: Empty. 
PACBLS-8  > PACBLS-8 :PACBLS S Meter = 55

Regards Rob Thirkettle  ZL3RX         
Dept  Physics & Astronomy
University of Canterbury     
Private Bag 4800,         
Christchurch 8020,
New Zealand
Tel: +64 3 364 2510
Fax: +64 3 364 2469
mailto:rob.thirkettle@canterbury.ac.nz
----
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