Hi John,
I'm glad you are enjoying the satellites! The power levels are not designed to change at night, although the transmitter power is dependent on the bus voltage. Since the batteries will be discharging to power the bird at night, it's possible they the power is a bit lower, but not hugely. If you are having more trouble getting IN, one suggestion is that you are competing with more stations at night. If you are having trouble hearing (which makes more sense since you are asking about Tx power) I can only suggest a change in your local QRM level is causing trouble.
73 and have fun!
Burns WB1FJ
On Sun, May 20, 2018 at 10:32 PM, John Marranca, Jr KB2HSH@amsat.org wrote:
Greetings all...it's been a long time since I have been active on the satellites. While I was married, I had a good station and could work nearly any satellite I could hear. After being limited to the FM birds, I had very limited success with SO-50, etc. But the Fox satellites have been simply awesome. I am having the time of my life working 91&92 with my UV5RA and 19" whip antenna. But only during the day. Do these satellites have a lower power at night/during eclipse??
John KB2HSH