[amsat-bb] AO-92 L Band Power

[Alan Blind]

Patrick:

rig - Down East Microwave L24X Transmit converter
coax - 150 feet LMR-600
antenna -  M2 23CM22EZA , 18 dbi gain, Horizontal,
Diamond SX1100 Power meter, SWR is 1.4:1
TX PL tone 67.0 kHZ

I have pushed the TX to 20 watts, but also, did not hear myself.

AO-92 U/v works just fine, so I know my RX is OK.

Alan
WA9WUD

On Wed, Jul 8, 2020 at 6:10 PM Patrick STODDARD (WD9EWK/VA7EWK) <
amsat-bb at wd9ewk.net> wrote:

> 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
>>
>>