[amsat-bb] Saturday evening @ WD9EWK - two AO-85 passes...

George Henry ka3hsw at att.net
Mon Oct 12 04:56:47 UTC 2015

So, from Patrick's experience, it sounds like the uplink is about 10kHz 
lower than the published frequency?  Has this been everyone else's 

George, KA3HSW

----- Original Message ----- 
From: "Patrick STODDARD (WD9EWK/VA7EWK)" <amsat-bb at wd9ewk.net>
To: <amsat-bb at amsat.org>
Sent: Sunday, October 11, 2015 9:17 AM
Subject: [amsat-bb] Saturday evening @ WD9EWK - two AO-85 passes...

> For the uplink, I was able to get through using 435.165 MHz for my two
> QSOs with the KG-UV8D. Downlink... I started on 145.9825 MHz, then tuned
> down to 145.980 MHz, and later I tuned down to 145.9775 MHz. Just like I
> saw when I used my KG-UV9D Friday evening, the sharper receive filters in
> the Chinese-made radios made using the smaller tuning step (2.5 kHz)
> useful.
> After this pass, I played the HDSDR RF recording into FoxTelem, and
> uploaded 9 packets to the AMSAT server. Had I used the Elk with the SDR
> setup, I am sure I would have collected many more packets from that pass.
> The second pass I worked, around 0400 UTC, was a shallow pass. AO-85 was
> only up to a maximum elevation of just over 11 degrees. I used only my
> Icom IC-2820H for this pass. I had used the IC-2820H as the uplink radio
> for a pass I worked Friday evening with my SDRplay receiver and HDSDR
> handling the downlink, but wanted to try the mobile radio by itself this
> time. it had no problems hearing the downlink, once AO-85 rose above the
> nearby mountains and houses.
> I started the radio on 435.160 MHz for the uplink (with 67.0 Hz tone
> activated for this VFO), and 145.980 MHz for the downlink. Both with
> narrow FM, a suggestion that had been tweeted earlier by Peter 2E0SQL. I
> was not able to get through using 435.160 MHz, but was able to when I
> tuned my uplink to 435.165 MHz. Later in the pass, I could get through
> when transmitting on 435.170 and 435.175 MHz. I had to use 15W, and at
> times 50W, to get through. The pass was too shallow for me to get through
> at 5W. Around the midpoint of the pass, possibly just after that, I had
> to tune my receive VFO down to 145.975 MHz to hear the rest of the pass.
> I mostly heard stations in California, along with W7JPI in southern
> Arizona and WQ3U in Oregon, and logging a total of 5 QSOs (working all I
> heard, except for WQ3U).

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