Once again, I note the whinging about HO-68's orbit not being suitable for a particular station ... or two.
I'd like to remind the gentlemen concerned that HO-68's on time is NOT designed to favour one particular area. Please remember, it's a Chinese satellite and we should abide by and respect their decision of when to activate the transponder.
For my own use,the HO-68 late afternoon GMT 'on' times are optimum.
Conversly, I 'could' complain about the ISS orbit - (but I don't) -only 'seeing it at max 6 degrees for 90 seconds every 2 days - (read: unworkable from my QTH), dirro SO-50, AO-27 and VO-52.
What may be poor for one operator could be optimum for another.
Please remember, the world consists of more than The United States Of America and Southern Europe.
73 John. [email protected]
I resent being called a whinger! An observation was given and I concurred. I have no problem with them doing what they want since it is their satellite and I think everyone else feels the same. I stated a fact, and may help others hoping to hear certain areas of the country on the bird and not understand why they are not hearing them. We have many other satellites to use and I endeavor to use them when I can.
Regards,
Reid, W4UPD Amsat: 17002
On 1/4/2011 4:50 AM, John Hackett wrote:
Once again, I note the whinging about HO-68's orbit not being suitable for a particular station ... or two.
I'd like to remind the gentlemen concerned that HO-68's on time is NOT designed to favour one particular area. Please remember, it's a Chinese satellite and we should abide by and respect their decision of when to activate the transponder.
For my own use,the HO-68 late afternoon GMT 'on' times are optimum.
Conversly, I 'could' complain about the ISS orbit - (but I don't) -only 'seeing it at max 6 degrees for 90 seconds every 2 days - (read: unworkable from my QTH), dirro SO-50, AO-27 and VO-52.
What may be poor for one operator could be optimum for another.
Please remember, the world consists of more than The United States Of America and Southern Europe.
73 John.[email protected]
----- Original Message ----- From: "John Hackett" [email protected] To: [email protected] Cc: [email protected] Sent: Tuesday, January 04, 2011 10:50 AM Subject: [amsat-bb] HO-68 comments.
Once again, I note the whinging about HO-68's orbit not being suitable for
a particular station ... or two.
I'd like to remind the gentlemen concerned that HO-68's on time is NOT
designed to favour one particular area. Please remember, it's a Chinese satellite and we should abide by and respect their decision of when to activate the transponder.
For my own use,the HO-68 late afternoon GMT 'on' times are optimum.
Conversly, I 'could' complain about the ISS orbit - (but I don't) -only
'seeing it at max 6 degrees for 90 seconds every 2 days - (read: unworkable from my QTH), dirro SO-50, AO-27 and VO-52.
What may be poor for one operator could be optimum for another.
Please remember, the world consists of more than The United States Of
America and Southern Europe.
73 John. [email protected]
Hi John, LA2QAA
I don't agree with you because there are many and many HO-68 orbits with the satellite transponder OFF despite the elevation is very hight for South Europe and North Europe i.e. for you and for me as well for South USA and North USA
The problem is that in the above orbits HO-68 cannot be very well monitored by the only one command station in China and they prefere to switch OFF the transponder.
The pobleme is that the Chinese HO-68 should have more control stations around the the world instead of only one in China.The roule is that many control station are needed for a LEO satellites and only two or maximum tree for a HEO satellite.
Same problem arise with JAMSAT with only one control station in Japan for FO-29
AMSAT China and AMSAT Japan don't like to share the command of their satellites with AMSAT's command stations in different continents.
Conversly you should remember that in the early 1974 AMSAT had control stations for OSCAR-6 in USA ,in North Africa (Algeria) and Australia so that the satellite was continuously monitored and during all orbits it was operational.
I abandoned HO-68 for the better and reliable as well in all orbits available transponder of VO-52
73" de
i8CVS Domenico
Hello Dom, You are of course right.
I have been in contact with Alan Kung regarding various aspects of HO-68 but as you correctly state, The Chinese don't seen to want to share the workload.
I went as far as offering donations to help Amsat China but was politely refused (!) ... the implication being that subscriptions would require reciprocating with 'information' - (which was NOT my intention).
I think your comments will give people a better understanding of why the orbits are not always otimum for certain times/areas.
73 John. [email protected]
CC'd to the group and the Amsat-bb for general information purposes.
.....................................................................................................................
Hi John, LA2QAA
I don't agree with you because there are many and many HO-68 orbits with the satellite transponder OFF despite the elevation is very hight for South Europe and North Europe i.e. for you and for me as well for South USA and North USA
The problem is that in the above orbits HO-68 cannot be very well monitored by the only one command station in China and they prefere to switch OFF the transponder.
The pobleme is that the Chinese HO-68 should have more control stations around the the world instead of only one in China.The roule is that many control station are needed for a LEO satellites and only two or maximum tree for a HEO satellite.
Same problem arise with JAMSAT with only one control station in Japan for FO-29
AMSAT China and AMSAT Japan don't like to share the command of their satellites with AMSAT's command stations in different continents.
Conversly you should remember that in the early 1974 AMSAT had control stations for OSCAR-6 in USA ,in North Africa (Algeria) and Australia so that the satellite was continuously monitored and during all orbits it was operational.
I abandoned HO-68 for the better and reliable as well in all orbits available transponder of VO-52
73" de
i8CVS Domenico
Hi Domenico,
The approach is excellent, but you forget the first link in the chain. HO-68 was built and funded all alone by the Chinese. So they can also decide alone whether and how long they offer a service for other radio amateurs.
Each transponder operates on a schedule will omit any region in the world. This is quite the same way with satellites which have an low inclination orbit.
We are not entitled to the transponder but should be happy and grateful that we can use it regularly. Unfortunately, the reality shows - if it is active - it is far from optimal use ....
73, Mike DK3WN
-----Ursprüngliche Nachricht----- Von: [email protected] [mailto:[email protected]] Im Auftrag von i8cvs Gesendet: Tuesday, January 04, 2011 8:37 PM An: [email protected]; Amsat - BBs Cc: [email protected] Betreff: [amsat-bb] Re: HO-68 comments.
----- Original Message ----- From: "John Hackett" [email protected] To: [email protected] Cc: [email protected] Sent: Tuesday, January 04, 2011 10:50 AM Subject: [amsat-bb] HO-68 comments.
Once again, I note the whinging about HO-68's orbit not being suitable for
a particular station ... or two.
I'd like to remind the gentlemen concerned that HO-68's on time is NOT
designed to favour one particular area. Please remember, it's a Chinese satellite and we should abide by and respect their decision of when to activate the transponder.
For my own use,the HO-68 late afternoon GMT 'on' times are optimum.
Conversly, I 'could' complain about the ISS orbit - (but I don't) -only
'seeing it at max 6 degrees for 90 seconds every 2 days - (read: unworkable from my QTH), dirro SO-50, AO-27 and VO-52.
What may be poor for one operator could be optimum for another.
Please remember, the world consists of more than The United States Of
America and Southern Europe.
73 John. [email protected]
Hi John, LA2QAA
I don't agree with you because there are many and many HO-68 orbits with the satellite transponder OFF despite the elevation is very hight for South Europe and North Europe i.e. for you and for me as well for South USA and North USA
The problem is that in the above orbits HO-68 cannot be very well monitored by the only one command station in China and they prefere to switch OFF the transponder.
The pobleme is that the Chinese HO-68 should have more control stations around the the world instead of only one in China.The roule is that many control station are needed for a LEO satellites and only two or maximum tree for a HEO satellite.
Same problem arise with JAMSAT with only one control station in Japan for FO-29
AMSAT China and AMSAT Japan don't like to share the command of their satellites with AMSAT's command stations in different continents.
Conversly you should remember that in the early 1974 AMSAT had control stations for OSCAR-6 in USA ,in North Africa (Algeria) and Australia so that the satellite was continuously monitored and during all orbits it was operational.
I abandoned HO-68 for the better and reliable as well in all orbits available transponder of VO-52
73" de
i8CVS Domenico
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participants (4)
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i8cvs -
John Hackett -
Mike Rupprecht -
w4upd