[amsat-bb] Linear satellites

[Mike McConnell]

I am somewhat new to satellites, but I have a question. I use a computer
program to help with Doppler shift and to manage satellite memories. On AO-7
and  VO-52 I have the following set as the middle of the pass band.  This is
what I set into the radio VFO.  I have noticed that I have to adjust the
transmitter frequency.  I thought that the TX and RX would track each other?


 

Does the relationship between TX and RX frequencies on the satellite change?


If I am setting the wrong base frequency into my VFO's for these two
satellites, what are better frequencies to use?

 

Thanks

 

 


Satellite

Lower

Upper

middle


VO-52A

 

 

 


UPLINK

435.2200

435.2800

435.2500


DOWNLINK

145.8700

145.9300

145.9000


 

		 


VO-52B

		 


UPLINK

435.2250

435.2750

435.2500


DOWNLINK

145.9250

145.8750

145.9000

				
				

AO-7 A

 

 

 


UPLINK

145.8500

145.9500

145.9000


DOWNLINK

29.4000

29.5000

29.4500


 

		 


AO-7 B

		 


UPLINK

432.1250

432.1750

432.1500


DOWNLINK

145.9750

145.9250

145.9500

 

 

 

 

 

Mike McConnell, Ph.D.

W0PD

1518 Willson Ave.

Webster City, IA 50595

515-835-9363