[amsat-bb] Unsuccessful Uplinks - AO-92

Tue Jun 12 13:35:56 UTC 2018

Use the D74 on receiving, it is very important to hear as well as possible!
Not to mention that you can use the built-in recorder, as I do, which is
very handy.

The Btech uv-5x3 day I use for TX cannot hear very well at all; I tried it
on RX once and never tried a second time.

73, Don KB2YSI

On Tue, Jun 12, 2018, 08:43 Hugo Dominguez, Jr. <hugois at gmail.com> wrote:

> Thanks so much. The MFJ seems perfect with good reviews. Then I can rig my
> baofeng for receive to the Elk and hand hold my D74 for transmitting or
> vice versa so that I can use the D74 to record the received signal. I Was
> going to order one from Amazon but it is $7 cheaper at HRO. Hoping to get
> one by Saturday and be more successful. It is getting very sad not hearing
> anyone come back to me, especially when the bird isn’t busy. I heard two DX
> stations last night probably from Mexico or South America on AO-92. No
> response from anyone of course.
>
> —
> Hugo Dominguez, Jr.
>
> On Jun 8, 2018, at 06:34, Rolf Krogstad <rolf.krogstad at gmail.com> wrote:
>
> MFJ sells a duplexer (aka Diplexer).  The model number is MFJ-916B.
> There are other manufacturers also such as Comet and Diamond, etc.
>
> There was an article not long ago in the Amsat Journal, (or was it QST?),
> comparing different models.
>
> 73
> Rolf  NR0T
> EN34it
>
> On Fri, Jun 8, 2018 at 8:10 AM, Don KB2YSI <kb2ysi at gmail.com> wrote:
>
>> What I have done is to hook the common port to the antenna that I want and
>> then the HT up to the side of the duplexer that I want to use.  I found it
>> easier to use the VHF side of the Arrow for this setup.
>>
>> 73, Don KB2YSI
>>
>> On Fri, Jun 8, 2018, 08:37 Hugo Dominguez, Jr. <hugois at gmail.com> wrote:
>>
>> > Thanks everyone for the feedback. I do have other handhelds. Is there a
>> > way to connect a splitter on my Elk antenna so that I can connect two
>> > handhelds? Will that degrade my signal in and/or out? Do I need to
>> filter
>> > the signals to split off the VHF and UHF signals? Right now I just try
>> to
>> > lay one handheld with its own HT antenna somewhere in case it is able to
>> > receive a signal or I try to get someone to hold it for me. Most of the
>> > times i’m by myself.
>> >
>> > —
>> > Hugo Dominguez, Jr.
>> >
>> > On Jun 7, 2018, at 11:57, Don KB2YSI <kb2ysi at gmail.com> wrote:
>> >
>> > My FM operating is has been dual HTs and portable, I.E. not tripod, no
>> > table, just me and what I can hold. I am working on a SSB setup but only
>> > tried it a few times thus far, but that includes a backpack.
>> >
>> > Yes, holding 2 radios and an antenna is difficult at best, and risky for
>> > the equipment. That is why I took the suggestion to use a piece of wood
>> in
>> > the end of my Arrow to mount the RX radio to. This was a major
>> improvement
>> > in the setup. Pictures and credit for the ideas are available at
>> > hamqth.com/KB2YSI
>> >
>> > SO-50 has been my go to satellite and 5w has worked very well for me.
>> > AO-85 is my unicorn, sometimes I have no issues getting in, others
>> nothing
>> > I do seems to work. My money is on operater error. Hihi. AO-91 & AO-92
>> are
>> > crazy easy to use once I had a full duplex (using 2 radios and a
>> duplexer
>> > as a filter) setup.
>> >
>> > I am still new, have not been operating a year yet, but am willing to
>> talk
>> > offline if anyone is interested. I may have learned a lot the hard way,
>> but
>> > it has been incredibly fun time!
>> >
>> >
>> >
>> > 73, Don KB2YSI
>> >
>> > On Thu, Jun 7, 2018, 14:03 Jean Marc Momple <jean.marc.momple at gmail.com
>> >
>> > wrote:
>> >
>> >> Hugo,
>> >>
>> >> Actually the Baofengs UR-5R that Francois is using are transmitting
>> with
>> >> only 2 watts on 70cm. Works very well. Sorry for having stated 4W (Vhf
>> >> power)
>> >>
>> >> I will send you separately a small presentation I did for the local
>> OM’s
>> >> which trigger Francois venture on the birds.
>> >>
>> >> 73
>> >>
>> >>  Jean Marc
>> >>
>> >> > On Jun 7, 2018, at 9:41 PM, Hugo Dominguez, Jr. <hugois at gmail.com>
>> >> wrote:
>> >> >
>> >> > Thanks for the feedback. I’ll keep trying. Is the Baofang being used
>> >> the 5 watt or 8 watt version? Right now it is hard holding two radios
>> and
>> >> the antenna. Maybe I can strap it to my antenna and use it for
>> listening
>> >> for myself. I should also look at mounting my antenna to an old camera
>> >> tripod to free my hand
>> >> >
>> >> > —
>> >> > Hugo Dominguez, Jr.
>> >> >
>> >> >> On Jun 7, 2018, at 10:30, Jean Marc Momple <
>> jean.marc.momple at gmail.com>
>> >> wrote:
>> >> >>
>> >> >> Hugo,
>> >> >>
>> >> >> Just to share experience.
>> >> >>
>> >> >> 3B8GZ (not on the BB, but in copy) is working very well AO-91 and
>> >> AO92, crystal clear above 10 deg. ele. with 2 Baofengs and a home brew
>> >> Arrow type of antenna while on the beach this side of the globe. He
>> made
>> >> QSO’s with South Africa, Madagascar and locals with less than 4W.
>> >> >>
>> >> >> SO-50 is a little more tricky as a 74Hz CTCSS required to trigger
>> the
>> >> repeater, then you need to switch CTCSS to 67Hz to QSO. Also it need a
>> few
>> >> more W for clear QSO.
>> >> >>
>> >> >> AO-85 is quite hard-hearing and depending on its path you need
>> between
>> >> 15 and 50 W with a 10-15 ele yagi to go through reasonably.
>> >> >>
>> >> >>
>> >> >> Hope this help.
>> >> >>
>> >> >>
>> >> >> 73
>> >> >>
>> >> >>
>> >> >>
>> >> >> Jean Marc (3B8DU)
>> >> >>
>> >> >>
>> >> >>
>> >> >>
>> >> >>
>> >> >>
>> >> >>> On Jun 7, 2018, at 9:04 PM, Hugo Dominguez, Jr. <hugois at gmail.com>
>> >> wrote:
>> >> >>>
>> >> >>> Someone mentioned to me that AO-91 was made to be worked by
>> >> handhelds. They also mentioned that AO-85 actually has a damaged
>> receive
>> >> antenna and that you need more power. Is that correct? Is 5 watts
>> >> sufficient for AO-92, AO-85 and SO-50?
>> >> >>>
>> >> >>> —
>> >> >>> Hugo Dominguez, Jr.
>> >> >>>
>> >> >>>> On Jun 6, 2018, at 23:08, Daniel Wight <kd7lee at gmail.com> wrote:
>> >> >>>>
>> >> >>>> As Gabe pointed out, I may have this backwards as I started out on
>> >> SO-50 (V/U) & then applied my original techniques to the Fox (U/V)
>> birds in
>> >> error (i.e. your initial settings are probably correct). I need to do
>> some
>> >> more research before I understand this fully, but it looks like I've
>> been
>> >> using the wrong uplink frequencies on my IC-W32A. My apologies for the
>> >> mistake. Looks like I'll be reprogramming my radio soon....
>> >> >>>>
>> >> >>>> 73,
>> >> >>>>
>> >> >>>> Daniel, KD7LEE
>> >> >>>>
>> >> >>>>> On Wed, Jun 6, 2018, 21:50 Hugo Dominguez, Jr. <hugois at gmail.com
>> >
>> >> wrote:
>> >> >>>>> Thanks. All the web pages I read said to perform doppler shift by
>> >> starting 10 kHz below and work your way up. Even this amsat website has
>> >> instructions to do it how I am doing it:
>> >> https://amsat-uk.org/2018/01/26/ao-92-open-for-amateur-radio-use/
>> >> >>>>>
>> >> >>>>> I also just noticed that there is a schedule for the L-band for
>> >> uplink which i’m interpreting that UHF won’t work when the bird is
>> setup
>> >> for the L-band for uplink. Maybe I was trying to make contact when it
>> was
>> >> on the L band.
>> >> >>>>>
>> >> >>>>> —
>> >> >>>>> Hugo Dominguez, Jr.
>> >> >>>>>
>> >> >>>>>> On Jun 6, 2018, at 21:07, Daniel Wight <kd7lee at gmail.com>
>> wrote:
>> >> >>>>>>
>> >> >>>>>> Seems like your Doppler shift might be opposite. I normally
>> start
>> >> high & work my way down during the satellite pass... (For instance, I
>> would
>> >> start at 435.180 for AO-85 and then work my way down to 435.160 as the
>> >> satellite 'sunsets' on my horizon). Doppler shift should be higher
>> >> frequency during approach, near zero when the satellite is overhead,
>> and
>> >> lower after the satellite passes.
>> >> >>>>>>
>> >> >>>>>> 73,
>> >> >>>>>>
>> >> >>>>>> Daniel, KD7LEE
>> >> >>>>>>
>> >> >>>>>>> On Wed, Jun 6, 2018, 17:27 Andrew Glasbrenner <
>> >> glasbrenner at mindspring.com> wrote:
>> >> >>>>>>> You've discovered one of the reasons full duplex is best on the
>> >> FM sats...you have no idea if you are getting through, because you
>> can't
>> >> hear while transmitting.
>> >> >>>>>>>
>> >> >>>>>>> Got another radio so you can work full duplex?
>> >> >>>>>>>
>> >> >>>>>>> 73, Drew KO4MA
>> >> >>>>>>>
>> >> >>>>>>> -----Original Message-----
>> >> >>>>>>> From: AMSAT-BB <amsat-bb-bounces at amsat.org> On Behalf Of Hugo
>> >> Dominguez, Jr.
>> >> >>>>>>> Sent: Wednesday, June 06, 2018 7:41 PM
>> >> >>>>>>> To: amsat-bb at amsat.org
>> >> >>>>>>> Subject: [amsat-bb] Unsuccessful Uplinks - AO-92
>> >> >>>>>>>
>> >> >>>>>>> I’ve just started playing with talking on satellites. I’m able
>> to
>> >> hear all the satellites (AO-85, AO-91, AO-92 and SO-50) that I have
>> >> programmed on my Kenwood TH-D74, which I use with my Elk dual band
>> periodic
>> >> log antenna. However no one can hear me or responds to me. I’ve only
>> been
>> >> successful with my uplink (being heard) on AO-91 on several passes. I
>> >> triple checked my frequencies on my radio and the 67 Hz tone and they
>> are
>> >> set as follows:
>> >> >>>>>>> Sat.        Xmit       Tone
>> >> >>>>>>> SO-50   145.850  67.0 Hz
>> >> >>>>>>> AO-85   435.170  67.0 Hz
>> >> >>>>>>> AO-91   435.250  67.0 HZ
>> >> >>>>>>> AO-92   435.350  67.0 Hz
>> >> >>>>>>> These are the frequencies used when the bird is at its peak. I
>> >> adjust for doppler on 440 by starting out 10 khz less, e.g AO-85
>> 435.160,
>> >> 435.165, 435.170, 435.175, 435.180.
>> >> >>>>>>>
>> >> >>>>>>> Any ideas if something has changed from what is published or
>> am I
>> >> missing something? Like I said, i’ve been able to communicate on AO-91.
>> >> >>>>>>>
>> >> >>>>>>> —
>> >> >>>>>>> Hugo Dominguez, Jr.
>> >> >>>>>>> _______________________________________________
>> >> >>>>>>> Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum
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>> the
>> >> official views of AMSAT-NA.
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>> >> >>>>>>>
>> >> >>>>>>> _______________________________________________
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>> >> available
>> >> >>>>>>> to all interested persons worldwide without requiring
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>> >> >>>>>>> are solely those of the author, and do not reflect the official
>> >> views of AMSAT-NA.
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>> satellite
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>> >> >>> _______________________________________________
>> >> >>> Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum
>> available
>> >> >>> to all interested persons worldwide without requiring membership.
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>> >> of AMSAT-NA.
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>> >>
>> >> _______________________________________________
>> >> Sent via AMSAT-BB at 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.
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>> >
>> _______________________________________________
>> Sent via AMSAT-BB at 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: http://www.amsat.org/mailman/listinfo/amsat-bb
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>
>