TXa refers to the 435.150 downlink, and TXb to 435.300, regardless of the uplink or configuration. The power levels should be roughly the same for Field Day.
73, Drew KO4MA ----- Original Message ----- From: <[email protected]> To: "Gould Smith" <[email protected]>; <[email protected]> Sent: Monday, June 22, 2009 10:40 AM Subject: [amsat-bb] Re: AO-51 adjustments > Thanks for the information Gould. > > Will you clarify, please, that TXA is the normal U/V configuration - and > also that these are the power levels we can expect for Field Day? That's > what I understand from your comments. > > Thank you, and thanks for all your efforts to keep AO-51 functioning as > best as it can given the issues you have to address. > > 73 to all, > > Tim - N3TL > -------------- Original message from "Gould Smith" > <[email protected]>: -------------- > > I am working with the satellite to get the Field Day configuration > operational >> long term.. I turned TXB back on during the 1300Z pass. >> During this pass I adjusted the TX levels to TXA 240 mW and TXB 290 mW. >> These are lower power levels than I have ever used before, but necessary >> to get the satellite through the 16+ minute eclipses each orbit. The SQRX >> receiver uses >> about 110 mA that must be subtracted from the total TX power used. >> I think I am close and expect to get the correct settings over the next >> 24 hours. It is also necessary to change the L/U analog operation to >> digital over the eastern US in order to download the telemetry to see how >> the satellite is >> performing over multiple orbits. >> >> 73, >> Gould, WA4SXM >> AO-51 Command Station >> _______________________________________________ >> Sent via [email protected]. 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 [email protected]. 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 [email protected]. 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
