[amsat-bb] AO-92 L Band Power

[Patrick STODDARD (WD9EWK/VA7EWK)]

Hi Alan!

I have been using 10W from an old Kenwood TM-541A 1.2 GHz FM
mobile, connected to a 10-element Yagi with 6 feet of coax.
I was on two passes earlier this morning, and two passes
last night. Even with the smallest tuning steps on the TM-541A
at 10 watts, I am able to get through during most of almost any
pass. I have been using this setup for the past few months.

In the past, I was working AO-92 L/V with 1 watt from an Alinco
DJ-G7T HT into the same coax and Yagi. The DJ-G7T tunes in 5 kHz
steps, which is helpful at the lower power level. The AFC in
AO-92's uplink receiver doesn't appear to work with weaker signals,
where the 10W from the TM-541A works even if I am a couple of kHz
from what the Doppler-adjusted uplink frequency would be at some
moments during passes.

What radio, coax, and antenna are you using for your 1.2 GHz
uplink?

73!




Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
Twitter: @WD9EWK or http://twitter.com/WD9EWK




On Wed, Jul 8, 2020 at 9:52 PM Alan Blind via AMSAT-BB <amsat-bb at amsat.org>
wrote:

> Using 10 Watts, I have not been able to get into AO-92 L Band.
>
> <snip>
>
> 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
>
>