The drawback may be the cost 1.35m Euros/kg, see
http://amsat-uk.org/2013/11/05/lunar-mission-looking-for-payloads/
73 Trevor M5AKA
just curious, what would the link budget look like for a lunar transponder? 73 Bob W7LRD
----- Original Message ----- From: "M5AKA" m5aka@yahoo.co.uk To: "AMSAT BB" amsat-bb@amsat.org Sent: Tuesday, November 5, 2013 2:14:20 AM Subject: [amsat-bb] Lunar Mission Looking for Payloads
The drawback may be the cost 1.35m Euros/kg, see
http://amsat-uk.org/2013/11/05/lunar-mission-looking-for-payloads/
73 Trevor M5AKA _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
And if you can, while doing this, do it also for a green laser, you know reflect off of the lunar reflectors the Apollo gang left on the surface?
And say a 10" diameter scope on the recieve end?
I wonder how large the beam gets by the time it gets to the moon with a typical good quality green laser?
Joe WB9SBD Sig The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 11/5/2013 2:12 PM, Bob- W7LRD wrote:
just curious, what would the link budget look like for a lunar transponder? 73 Bob W7LRD
----- Original Message ----- From: "M5AKA" m5aka@yahoo.co.uk To: "AMSAT BB" amsat-bb@amsat.org Sent: Tuesday, November 5, 2013 2:14:20 AM Subject: [amsat-bb] Lunar Mission Looking for Payloads
The drawback may be the cost 1.35m Euros/kg, see
http://amsat-uk.org/2013/11/05/lunar-mission-looking-for-payloads/
73 Trevor M5AKA _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
According to this path loss is a lot less than I expected: http://leleivre.com/rf_pathloss.html
~206db at 1.2GHz .... assuming a 384403KM trip
you're still going to need some hardware .... but I think it's doable ....
On Tue, Nov 5, 2013 at 8:12 PM, Bob- W7LRD w7lrd@comcast.net wrote:
just curious, what would the link budget look like for a lunar transponder? 73 Bob W7LRD
----- Original Message ----- From: "M5AKA" m5aka@yahoo.co.uk To: "AMSAT BB" amsat-bb@amsat.org Sent: Tuesday, November 5, 2013 2:14:20 AM Subject: [amsat-bb] Lunar Mission Looking for Payloads
The drawback may be the cost 1.35m Euros/kg, see
http://amsat-uk.org/2013/11/05/lunar-mission-looking-for-payloads/
73 Trevor M5AKA _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
participants (4)
-
Bob- W7LRD -
Joe -
M5AKA -
Rob Roschewsk