今天也不太妙，但稍后喊喊看。
hello ao-51 users,
as you have noticed, ao-51 has recently experienced a few shutdowns
due to a low battery voltage trip. this is because of increasing
eclipses (now at 20 mins per orbit and increasing), poor sun angles
(still getting worse), and a "weak" battery.
we are now using the 67 hz pl tone required mode in order to turn the
transmitter(s) off when not in use. the transmitter power is down to
about 550 mw. we will continue adjusting various parameters,
including transmitter power, trigger voltages, etc. in order to keep
the battery temperatures reasonable. keep in mind that the power
management feature keeps the transmitter(s) off during eclipses, so
you can't bring it up even with a pl tone while the satellite is in
eclipse.
here is our current schedule, which will continue until further notice:
ao-51 schedule
mode v/u fm voice repeater (**67 hz pl tone required**)
uplink: 145.880 mhz fm (temporarily from 145.920)
downlink 435.300 mhz fm
the ao-51 command team can use your help!
