[amsat-bb] Unsuccessful Uplinks - AO-92

Tue Jun 12 12:43:56 UTC 2018

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.
>> >> >>>>>>> _______________________________________________
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>> >> 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.
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>> >> >>>>>>> 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.
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>> >> of AMSAT-NA.
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>> >> >>
>> >>
>> >> _______________________________________________
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>> >> 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!
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> 