[amsat-bb] Hearing AO-85 with a KG-UV9D & dual-band duckie

Patrick STODDARD (WD9EWK/VA7EWK) amsat-bb at wd9ewk.net
Wed Nov 25 18:07:38 UTC 2015


After seeing several people at my demonstration in Goodyear
AZ last week used their HTs with standard duckie antennas to
hear AO-85 as it passed by, and seeing many positive comments
on how easy it is to hear this downlink, I decided to try it
for myself. On my way to the office this morning, I stopped
at a shopping center parking lot for the AO-85 pass around
1438 UTC to hear this pass. AO-85 went up to a maximum
elevation of 41 degrees, which would have been a nice pass
to work if I had my Elk log periodic in the car.

After about 3 minutes into the pass, I could hear the round-
table conversation taking place. Using my Wouxun KG-UV9D HT
and a Nagoya NA-701 2m/70cm duckie antenna that is about 8.5
inches/22cm long, and with the squelch open, I was able to
listen to the downlink. I had to move the HT around while
listening to the downlink, but I was hearing it. I had the
HT in narrow FM, as I described in my report on working
stations via AO-85 using this HT and my Elk log periodic
antenna I sent to the -BB yesterday. I had to adjust the
frequency down from 145.980 MHz through 145.9775 MHz to
145.975 MHz near the end of the pass, using one of the
HT's VFOs.

While I was listening to this pass, I used my mobile phone
to make a short video clip of what I was doing. The 4-minute
clip I recorded around the middle of the pass is now on
YouTube at:


There is a point in this video clip where I was not hearing
the downlink, as I dropped the radio into my car. Once I
picked it up and held it outside the car again, I was able
to continue hearing the downlink. This is not a professional-
grade video (it was recorded in 720p, but I'm not a movie
producer), but it shows that we don't need much to hear AO-85.

During this pass, I heard several stations, and the video
clip has most of them. I was hearing WA6DIR in California,
KC7MG in Arizona, AA5PK in Texas, W7SXM in Washington state,
and late in the pass I heard KC9ELU in Indiana. If I had
planned this out better, I would have tried to record more
of the pass, and made sure I didn't drop the radio during
the recording.

Happy Thanksgiving, and 73!

Twitter: @WD9EWK

More information about the AMSAT-BB mailing list