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AO 7 Technical data



AMSAT-OSCAR 7

Beacons
	  29.502 MHz (200 mw) Used in conjunction with Mode A
	145.972 MHz (200 mw) Used in conjunction with Mode B and C [low
power Mode B]
 	435.100 MHz (intermittent problem -- switches between 400 mw and 10
mw)
	2304.1   MHz (40 mw) Must be commanded on.  Auto off after 15
minutes.
		Requires STA to operate.

Transponder I:  Mode A  (2m/10m)
	type: linear, non-inverting
	uplink passband:   145.850 - 145.950 MHz
	downlink passband:  29.400 -  29.500 MHz
	translation equation:  
		downlink (MHz) = uplink (MHz) - 116.450 MHz +/- Doppler
	output power: 1.3 watts PEP (start of life)

Transponder II:  Mode B (70cm/2m) and Mode C (low power)
	type; linear, inverting
	uplink passband:   432.125 - 432.175 MHz  *See Note
	downlink passband: 145.975 - 145.925 MHz
	translation equation:
		downlink (MHz) = 578.100 - uplink (MHz) +/- Doppler
	output power: 8 watts PEP Mode B (start of life!), 2.5 watts PEP
Mode C
	*Note: Due to changes in Radio Amateur Service and Radio
		Amateur Satellite Service there are questions as to
		legality of US Amateurs transmitting to AO-7 on this
frequency.

Keep those reports coming!

73 de K2ubc (Martin Davidoff)

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