Hi Alan, in the rather safe than sorry category—check your uplink frequency. After launch we quickly determined a “best” uplink was 1267.359 MHzMost folks find this to be pretty good. Then Doppler correction is important at these frequencies, so adjust for that as well. One night I wasn’t quite getting into the bird and knew I should have been. It was just a couple kHz off, but enough to make a big difference. Give that a shot anyhow. Easy for radios to be off a tad at these high frequencies, too.
Hope to work you on L-band soon!
Mark N8MH
On Wed, Jul 8, 2020 at 5:52 PM Alan Blind via AMSAT-BB amsat-bb@amsat.org wrote:
Using 10 Watts, I have not been able to get into AO-92 L Band.
From the AO-92 web site:
================
......Since the 435 MHz uplink antenna is used to receive the 1267 MHz signals and may present a mismatch at that frequency, pre-launch estimates suggest that a power level of 100 watts ERP will be required for horizon-to-horizon access in Mode L/v. AMSAT Engineering will issue further guidance after in-orbit testing. Look for future articles on the AMSAT website and in The AMSAT Journal for equipment ideas and tutorials for accessing the L-band uplink. ====================
Perhaps my 10 Watts are too low. Have there been updates from AMSAT on recommended L band power? What power do others run?
Alan WA9WUD _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb