Hi!
A couple of weeks ago, when I started using my old Icom IC-W32A on the FM satellites again, I saw that I was having to tune up to 435.365 MHz on the AO-92 U/V uplink to get through near my LOS. I didn't think much about it then, since the radio is at least 15 years old. It worked, even with the additional tuning step, and did a decent job on AO-91 and AO-92 (U/V). It's one of the later W32A models, with a 7-digit serial number that doesn't include any capabilities to receive at 800 MHz, and doesn't work SO-50 full-duplex.
I was on AO-92 U/V earlier this week using my TH-D72 HT. On one pass Monday morning, I found that I had to tune up to 435.365 MHz near the end of a pass to get through the satellite. This was the first time I could recall having to do this with my TH-D72. I asked about this on Twitter and the QRZ satellite forum; a few others have noticed the same thing.
I am now finding that when I work AO-92 U/V, I don't stay on 435.340 MHz very long. Maybe a minute or so, about the same amount of time I have been on 435.365 MHz before LOS. I spend a similar amount of time on the other 4 tuning steps for AO-92 U/V (435.345 through 435.360 MHz). Once I saw this, it is not a big deal to be prepared to use a 6th tuning step on my radios. This is a relatively new thing, as I wasn't having to tune above 435.360 MHz a year ago - or even 3-4 months ago - when working AO-92 U/V.
For those using HTs or FM mobile radios to work AO-92 U/V, does anyone else find they are having to transmit above 435.360 MHz late in those passes to get through? If you're using something like an IC-910 or IC-9100, where are your radios ending up when working AO-92 U/V? Or an alternative question... what are you using as the nominal uplink frequency for AO-92 U/V?
Thanks, and 73!
Patrick WD9EWK/VA7EWK http://www.wd9ewk.net/ Twitter: @WD9EWK or http://twitter.com/WD9EWK