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@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@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@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@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@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@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@amsat.org On Behalf Of Hugo Dominguez, Jr. Sent: Wednesday, June 06, 2018 7:41 PM To: amsat-bb@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@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
Sent via AMSAT-BB@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
Sent via AMSAT-BB@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