RS series mode A downlink power
Anyone with any firm data on the downlink power from RS10-13 on 29MHz? A cursory reference check and Google didn't turn anything up. I'm thinking maybe this was a telemetered value and someone remembers?
73, Drew KO4MA
As per the Satellite Experimenter's Handbook 2nd edition:
Power output: 5 watts for RS10/11 Power output : 8 watts PEP for RS-12/13
Andrew Glasbrenner wrote:
Anyone with any firm data on the downlink power from RS10-13 on 29MHz? A cursory reference check and Google didn't turn anything up. I'm thinking maybe this was a telemetered value and someone remembers?
73, Drew KO4MA _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
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Perfect! Thank you!
73, Drew KO4MA
w4upd wrote:
As per the Satellite Experimenter's Handbook 2nd edition:
Power output: 5 watts for RS10/11 Power output : 8 watts PEP for RS-12/13Andrew Glasbrenner wrote:
Anyone with any firm data on the downlink power from RS10-13 on 29MHz? A cursory reference check and Google didn't turn anything up. I'm thinking maybe this was a telemetered value and someone remembers?
73, Drew KO4MA _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
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RS10/11 was a wonderful bird, with a high orbit and relatively high transponder power, it was very easy to work and the coverage was quite wide. It was a perfect beginner's satellite and a lot of guys got started in satellite operation with RS-10/11.
It is too bad the Russians have not been able to continue this series. They took over the LEO/MEO activity from AMSAT when AMSAT decided to concentrate on HEOs and took it in a new and exciting direction.
I still think that the discussions we have over LEO vs HEO should be shifted to linear vs FM birds. Moving people from FM birds to linear birds opens up a whole new world of satellite operating to them and I think we would have a lot more satellite enthusiasts if we encouraged the FMers to try the linear birds. Then the progression to higher satellites would have a lot more support. - Duffey
O -- KK6MC James Duffey Cedar Crest NM
At 12:36 PM 9/17/2009, you wrote:
RS10/11 was a wonderful bird, with a high orbit and relatively high transponder power, it was very easy to work and the coverage was quite wide. It was a perfect beginner's satellite and a lot of guys got started in satellite operation with RS-10/11.
I loved RS-10, it was my first bird, and one of the best I've ever worked. ALso, I actually have gear for Mode A SSB/CW, but not the other modes.
I still think that the discussions we have over LEO vs HEO should be shifted to linear vs FM birds. Moving people from FM birds to linear birds opens up a whole new world of satellite operating to them and I think we would have a lot more satellite enthusiasts if we encouraged the FMers to try the linear birds. Then the progression to higher satellites would have a lot more support. - Duffey
The prob with the modern SSB birds is the equipment is expensive for thos of us who don't already have 70cm SSB in something we own. However, a lot of people here have old 2m SSB radios around, so another RS-10, with that level of performance would fill a step up gap from FM. I'd certainly be into that bird.
73 de VK3JED / VK3IRL http://vkradio.com
Tony - On Sep 16, 2009, at 8:42 PM, Tony Langdon wrote:
The prob with the modern SSB birds is the equipment is expensive for thos of us who don't already have 70cm SSB in something we own.
Used multimodes for 432 MHz and older 432 MHz transverters are serviceable and not that expensive if you do some searching. The linear birds are well worth the investment in my opinion; it is a big step up in capability. - Duffey
At 01:11 PM 9/17/2009, James Duffey wrote:
Tony - On Sep 16, 2009, at 8:42 PM, Tony Langdon wrote:
The prob with the modern SSB birds is the equipment is expensive for thos of us who don't already have 70cm SSB in something we own.
Used multimodes for 432 MHz and older 432 MHz transverters are serviceable and not that expensive if you do some searching. The linear birds are well worth the investment in my opinion; it is a big step up in capability. - Duffey
They still command a fair price over here. :(
73 de VK3JED / VK3IRL http://vkradio.com
Just to add to this, In the western part of Canada / USA I've seen various mobile all mode 70 cm rigs on sale at swap meets for a few hundred dollars (some less than $200.00 for IIRC) with no takers. I supsect the avalabity of used rigs like the Icom 706 MKIIG and others that include 70 cm along with other bands has put a serious dent in the market for such radios. The DC to daylight rigs that include 70 cm, are also likely to be newer, in better shape, have more avaliable accessories, be more likley to be able to be fixed by the manufacuter etc.. IMHO even if the receivers on the mono band mobile rigs are better than the newer DC to daylight rigs, i'm not convinced this really matters as much for sattelite use as it would for digging out terristeral DX from the noise floor from an intermod prone location such as a mountain top transmitter site.
The classic sattelite rigs such as the FT 736's and used Icom 910's etc seem to command much higher prices.
----- Original Message ---- From: Tony Langdon vk3jed@gmail.com To: James Duffey jamesduffey@comcast.net Cc: James Duffey jamesduffey@comcast.net; amsat-bb@amsat.org Sent: Wednesday, September 16, 2009 8:23:50 PM Subject: [amsat-bb] Re: RS series mode A downlink power
At 01:11 PM 9/17/2009, James Duffey wrote:
Tony - On Sep 16, 2009, at 8:42 PM, Tony Langdon wrote:
The prob with the modern SSB birds is the equipment is expensive for thos of us who don't already have 70cm SSB in something we own.
Used multimodes for 432 MHz and older 432 MHz transverters are serviceable and not that expensive if you do some searching. The linear birds are well worth the investment in my opinion; it is a big step up in capability. - Duffey
They still command a fair price over here. :(
73 de VK3JED / VK3IRL http://vkradio.com
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----- Original Message ----- From: "Tony Langdon" vk3jed@gmail.com To: amsat-bb@amsat.org Sent: Wednesday, September 16, 2009 9:42 PM Subject: [amsat-bb] Re: RS series mode A downlink power
At 12:36 PM 9/17/2009, you wrote:
RS10/11 was a wonderful bird, with a high orbit and relatively high transponder power, it was very easy to work and the coverage was quite wide. It was a perfect beginner's satellite and a lot of guys got started in satellite operation with RS-10/11.
I loved RS-10, it was my first bird, and one of the best I've ever worked. ALso, I actually have gear for Mode A SSB/CW, but not the other modes.
[snip]
RS-10/11 was my first satellite as well, with a Drake R-4B for the downlink, and the Drake T-4XB and TC-2 transmit converter for the uplink. A homebrew 2-meter turnstile and a 10 meter dipole in the attic, and I had a blast!!
George, KA3HSW
----- Original Message -----
At 12:36 PM 9/17/2009, you wrote:
RS10/11 was a wonderful bird, with a high orbit and relatively high transponder power, it was very easy to work and the coverage was quite wide. It was a perfect beginner's satellite and a lot of guys got started in satellite operation with RS-10/11.
I loved RS-10, it was my first bird, and one of the best I've ever worked. ALso, I actually have gear for Mode A SSB/CW, but not the other modes.
So many satellite operators started on RS-10/11, myself included. It was just so workable.
Sunspots were on their way out (it was the end of the previous cycle), and my Yaesu 767GX transceiver had a 2m module pushing a whole 10 watts into a homemade copper pipe J-pole for an uplink. A Radio Shack DX-440 shortwave receiver, connected to a wire strung out to a tree in the back yard, made for a makeshift downlink. I worked stations across the entire continent with this humble station. My first contact (from Northern California) was to Arizona; the second was to New York. How could you not love a satellite like that?
Greg KO6TH
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At 12:14 PM 9/17/2009, you wrote:
As per the Satellite Experimenter's Handbook 2nd edition:
Power output: 5 watts for RS10/11 Power output : 8 watts PEP for RS-12/13
Interesting, I had better results on RS10 than RS12/13. Was RS10's uplink more sensitive?
73 de VK3JED / VK3IRL http://vkradio.com
participants (7)
-
Andrew Glasbrenner -
George Henry -
Greg D. -
James Duffey -
Mark Spencer -
Tony Langdon -
w4upd