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CX2SA > SATDIG 07.11.15 23:28l 757 Lines 27698 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: dumbest questions in the world (Jerry Buxton)
2. a big thanks! (KG4BYN - Ben Harold)
3. Re: dumbest questions in the world (John Brier)
4. Link Budget (Joe)
5. Re: Link Budget (Joe)
6. Re: Link Budget (Paul Stoetzer)
7. Re: Link Budget (Graham Shirville)
8. Re: Link Budget (Burns Fisher)
9. Re: Link Budget (JoAnne Maenpaa)
10. Re: Link Budget (Burns Fisher)
11. Re: Link Budget (Jerry Buxton)
12. Re: Link Budget (KA9QJG)
13. Re: Link Budget (Paul Stoetzer)
----------------------------------------------------------------------
Message: 1
Date: Sat, 7 Nov 2015 12:21:49 -0600
From: Jerry Buxton <n0jy@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] dumbest questions in the world
Message-ID: <563E413D.2060000@xxxxx.xxx>
Content-Type: text/plain; charset=windows-1252
On 11/7/2015 11:31, Zach Leffke wrote:
>
> Its not free ($5.00) but I like having the laminated Frequency Guide
> from AMSAT handy. It lists all the active voice birds (SSB/FM) on a
> nice single laminated sheet front/back.
> http://store.amsat.org/catalog/product_info.php?products_id=73
Join or renew your AMSAT membership and I believe you get one of those
free when you get your card.
Jerry Buxton, N?JY
------------------------------
Message: 2
Date: Sat, 7 Nov 2015 14:46:20 -0500
From: KG4BYN - Ben Harold <kg4byn@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] a big thanks!
Message-ID: <563E550C.5060708@xxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8; format=flowed
well, i asked and you all came through. SO - thank you! i've got MORE
knowledge to get me underway, now, than i did upon a few weeks of
hunting around on the internet and just getting more and more confused.
fwiw, i'm running windoze 7 on the box in my office and can easily
switch from windoze to linux on my notebook in the shack. also, i'm NOT
- particularly - "cheap" when it comes to this, but fighting the cancer
took its toll not only on ME, but on our pocketbook, as well. anyway,
thanks for ALL the info! i'm sure i'll be popping in and out of here,
now that you know who i am, as well as my level of "marksmanship" in
this endeavor.
73,
ben
---
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------------------------------
Message: 3
Date: Sat, 7 Nov 2015 14:51:12 -0500
From: John Brier <johnbrier@xxxxx.xxx>
To: Jerry Buxton <n0jy@xxxxx.xxx>
Cc: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] dumbest questions in the world
Message-ID:
<CALn0fKNrmFg+sTSFGrcq6C=CvG_sucArzZrqonMd6mCtmE5Lyg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
I just joined and got the frequency chart and the rest of the member
materials yesterday. Great stuff. Thanks.
John, KG4AKV
On Nov 7, 2015 1:22 PM, "Jerry Buxton" <n0jy@xxxxx.xxx> wrote:
> On 11/7/2015 11:31, Zach Leffke wrote:
> >
> > Its not free ($5.00) but I like having the laminated Frequency Guide
> > from AMSAT handy. It lists all the active voice birds (SSB/FM) on a
> > nice single laminated sheet front/back.
> > http://store.amsat.org/catalog/product_info.php?products_id=73
> Join or renew your AMSAT membership and I believe you get one of those
> free when you get your card.
>
> Jerry Buxton, N?JY
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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
>
------------------------------
Message: 4
Date: Sat, 7 Nov 2015 13:57:30 -0600
From: Joe <nss@xxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Link Budget
Message-ID: <563E57AA.1090106@xxx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
Can anyone here run a link budget for me?
I'm in an slight heated debate with some people, About how they have
heard about the possible Geo synchronous bird coming up, and they are
all wondering why don't "THEY" I like the "THEY" part, anyway why don't
they just put it on the moon.
I gave them several reasons why a Geo bird is better,
1- It is there 24/7 where the moon is visible less than 50% of the day
2- the Geo bird doesn't move ( or extremely little) so set the antenna
and forget it. Where the moon requires tracking programs and antennas
that can move in AZ and EL
3- Useable "Window" The amount of the earths surface that can see either
is soo close to the same why bother I bet a geo bird would be at least
close to 90% of what the moon see's
4- And finally antennas and power required. The moon being soooo much
farther away the amount of power needed each way has to be MUCH more.
And thats what I was wondering say you had a nice decent transponder in
Geo orbit. what power levels say ERP I guess is needed each way? then
drop the same transponder and how much more erp each way will be needed
to have the same level of contact quality?
Joe WB9SBD
------------------------------
Message: 5
Date: Sat, 7 Nov 2015 14:00:38 -0600
From: Joe <nss@xxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Link Budget
Message-ID: <563E5866.7060309@xxx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
oops I missed Now drop the same transponder on the moon,, and how much
more is needed?
Joe WB9SBD
Sig
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 11/7/2015 1:57 PM, Joe wrote:
> Can anyone here run a link budget for me?
>
> I'm in an slight heated debate with some people, About how they have
> heard about the possible Geo synchronous bird coming up, and they are
> all wondering why don't "THEY" I like the "THEY" part, anyway why
> don't they just put it on the moon.
>
> I gave them several reasons why a Geo bird is better,
>
> 1- It is there 24/7 where the moon is visible less than 50% of the day
>
> 2- the Geo bird doesn't move ( or extremely little) so set the antenna
> and forget it. Where the moon requires tracking programs and antennas
> that can move in AZ and EL
>
> 3- Useable "Window" The amount of the earths surface that can see
> either is soo close to the same why bother I bet a geo bird would be
> at least close to 90% of what the moon see's
>
> 4- And finally antennas and power required. The moon being soooo much
> farther away the amount of power needed each way has to be MUCH more.
> And thats what I was wondering say you had a nice decent transponder
> in Geo orbit. what power levels say ERP I guess is needed each way?
> then drop the same transponder and how much more erp each way will be
> needed to have the same level of contact quality?
>
> Joe WB9SBD
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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
>
>
>
------------------------------
Message: 6
Date: Sat, 7 Nov 2015 15:14:12 -0500
From: Paul Stoetzer <n8hm@xxxx.xxx>
To: Joe <nss@xxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Link Budget
Message-ID:
<CABzOSOoUUr4D9O16xkg84LiUB+8sXOOXeVsBbHMWtKMo6_rE3g@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
It's about 20 dB more path loss to the moon than to geosynchronous
orbit. So if you need 5-10 watts of RF to a small dish for the
geosynchronous satellite, you'd need 1000w to the same dish or a much
larger dish to reach a transponder on the moon.
Not to mention the delay for a signal to the moon and back is 2.6
seconds compared to about 240 ms for a signal to and from a
geosynchronous satellite.
73,
Paul, N8HM
On Sat, Nov 7, 2015 at 3:00 PM, Joe <nss@xxx.xxx> wrote:
> oops I missed Now drop the same transponder on the moon,, and how much more
> is needed?
>
> Joe WB9SBD
> Sig
> The Original Rolling Ball Clock
> Idle Tyme
> Idle-Tyme.com
> http://www.idle-tyme.com
>
> On 11/7/2015 1:57 PM, Joe wrote:
>>
>> Can anyone here run a link budget for me?
>>
>> I'm in an slight heated debate with some people, About how they have
>> heard about the possible Geo synchronous bird coming up, and they are all
>> wondering why don't "THEY" I like the "THEY" part, anyway why don't they
>> just put it on the moon.
>>
>> I gave them several reasons why a Geo bird is better,
>>
>> 1- It is there 24/7 where the moon is visible less than 50% of the day
>>
>> 2- the Geo bird doesn't move ( or extremely little) so set the antenna and
>> forget it. Where the moon requires tracking programs and antennas that can
>> move in AZ and EL
>>
>> 3- Useable "Window" The amount of the earths surface that can see either
>> is soo close to the same why bother I bet a geo bird would be at least
close
>> to 90% of what the moon see's
>>
>> 4- And finally antennas and power required. The moon being soooo much
>> farther away the amount of power needed each way has to be MUCH more. And
>> thats what I was wondering say you had a nice decent transponder in Geo
>> orbit. what power levels say ERP I guess is needed each way? then drop the
>> same transponder and how much more erp each way will be needed to have the
>> same level of contact quality?
>>
>> Joe WB9SBD
>>
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. 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@xxxxx.xxx. 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
------------------------------
Message: 7
Date: Sat, 7 Nov 2015 20:17:49 -0000
From: "Graham Shirville" <g.shirville@xxxxxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>, "Joe" <nss@xxx.xxx>
Subject: Re: [amsat-bb] Link Budget
Message-ID: <64DB892CFAA94599A37173DBD7DDA6AA@xxxxxxx.xxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=response
Hi Joe,
if they or you would like to play with numbers I can thoroughly recommend a
number of Jan King's spreadsheets we are hosted here
http://www.amsatuk.me.uk/iaru/spreadsheet.htm
Of course not only the moon much further away but it gets mighty cold on the
surface when it is in eclipse...
73
Graham
G3VZV
-----Original Message-----
From: Joe
Sent: Saturday, November 07, 2015 7:57 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Link Budget
Can anyone here run a link budget for me?
I'm in an slight heated debate with some people, About how they have
heard about the possible Geo synchronous bird coming up, and they are
all wondering why don't "THEY" I like the "THEY" part, anyway why don't
they just put it on the moon.
I gave them several reasons why a Geo bird is better,
1- It is there 24/7 where the moon is visible less than 50% of the day
2- the Geo bird doesn't move ( or extremely little) so set the antenna
and forget it. Where the moon requires tracking programs and antennas
that can move in AZ and EL
3- Useable "Window" The amount of the earths surface that can see either
is soo close to the same why bother I bet a geo bird would be at least
close to 90% of what the moon see's
4- And finally antennas and power required. The moon being soooo much
farther away the amount of power needed each way has to be MUCH more.
And thats what I was wondering say you had a nice decent transponder in
Geo orbit. what power levels say ERP I guess is needed each way? then
drop the same transponder and how much more erp each way will be needed
to have the same level of contact quality?
Joe WB9SBD
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. 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
------------------------------
Message: 8
Date: Sat, 7 Nov 2015 15:28:33 -0500
From: Burns Fisher <burns@xxxxxx.xx>
To: Joe <nss@xxx.xxx>
Cc: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Link Budget
Message-ID:
<CABX7KxVtXXFHvm_3_BLd4SKyTDRSpOdYwsA+x+kXJrTNHG0Eew@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
While it appears that you are right about the link budget, one of you
arguments holds only *some* water, and that is tracking.
GeoSTATIONARY birds would require to tracking, but there are
geosynchronous orbits (i.e. 24 hours, but not necessarily 0
inclination and 0 eccentricity) which would move north/south or
east/west in the sky over the course of a day.
And regarding the moon: Another argument against it is that it is
darned hard to land on the moon. Lots more deltaV required.
73,
Burns W2BFJ
On Sat, Nov 7, 2015 at 2:57 PM, Joe <nss@xxx.xxx> wrote:
> Can anyone here run a link budget for me?
>
> I'm in an slight heated debate with some people, About how they have heard
> about the possible Geo synchronous bird coming up, and they are all
> wondering why don't "THEY" I like the "THEY" part, anyway why don't they
> just put it on the moon.
>
> I gave them several reasons why a Geo bird is better,
>
> 1- It is there 24/7 where the moon is visible less than 50% of the day
>
> 2- the Geo bird doesn't move ( or extremely little) so set the antenna and
> forget it. Where the moon requires tracking programs and antennas that can
> move in AZ and EL
>
> 3- Useable "Window" The amount of the earths surface that can see either is
> soo close to the same why bother I bet a geo bird would be at least close to
> 90% of what the moon see's
>
> 4- And finally antennas and power required. The moon being soooo much
> farther away the amount of power needed each way has to be MUCH more. And
> thats what I was wondering say you had a nice decent transponder in Geo
> orbit. what power levels say ERP I guess is needed each way? then drop the
> same transponder and how much more erp each way will be needed to have the
> same level of contact quality?
>
> Joe WB9SBD
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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
------------------------------
Message: 9
Date: Sat, 7 Nov 2015 14:26:55 -0600
From: "JoAnne Maenpaa" <k9jkm@xxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Link Budget
Message-ID: <006101d1199a$a8baafc0$fa300f40$@xxx>
Content-Type: text/plain; charset="us-ascii"
An overview of the Phase 4 link was presented this week at the Palomar
Amateur Radio Club. The video from the meeting is at:
https://youtu.be/-pjsS4OLg8w It explains a bit more than can be covered in
an e-mail.
--
73 de JoAnne K9JKM
k9jkm@xxxxx.xxx
> -----Original Message-----
> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Joe
> Sent: Saturday, November 07, 2015 1:57 PM
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Link Budget
>
> Can anyone here run a link budget for me?
------------------------------
Message: 10
Date: Sat, 7 Nov 2015 15:29:30 -0500
From: Burns Fisher <burns@xxxxxx.xx>
To: Joe <nss@xxx.xxx>
Cc: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Link Budget
Message-ID:
<CABX7KxX=KkXWX4bHrUow4_cLqAycfu629HMOXgEsUj10a4K2_A@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Fudge. That is GeoSTATIONARY birds would require *no* tracking....
On Sat, Nov 7, 2015 at 3:28 PM, Burns Fisher <burns@xxxxxx.xx> wrote:
> While it appears that you are right about the link budget, one of you
> arguments holds only *some* water, and that is tracking.
> GeoSTATIONARY birds would require to tracking, but there are
> geosynchronous orbits (i.e. 24 hours, but not necessarily 0
> inclination and 0 eccentricity) which would move north/south or
> east/west in the sky over the course of a day.
>
> And regarding the moon: Another argument against it is that it is
> darned hard to land on the moon. Lots more deltaV required.
>
> 73,
>
> Burns W2BFJ
>
> On Sat, Nov 7, 2015 at 2:57 PM, Joe <nss@xxx.xxx> wrote:
>> Can anyone here run a link budget for me?
>>
>> I'm in an slight heated debate with some people, About how they have heard
>> about the possible Geo synchronous bird coming up, and they are all
>> wondering why don't "THEY" I like the "THEY" part, anyway why don't they
>> just put it on the moon.
>>
>> I gave them several reasons why a Geo bird is better,
>>
>> 1- It is there 24/7 where the moon is visible less than 50% of the day
>>
>> 2- the Geo bird doesn't move ( or extremely little) so set the antenna and
>> forget it. Where the moon requires tracking programs and antennas that can
>> move in AZ and EL
>>
>> 3- Useable "Window" The amount of the earths surface that can see either is
>> soo close to the same why bother I bet a geo bird would be at least close
to
>> 90% of what the moon see's
>>
>> 4- And finally antennas and power required. The moon being soooo much
>> farther away the amount of power needed each way has to be MUCH more. And
>> thats what I was wondering say you had a nice decent transponder in Geo
>> orbit. what power levels say ERP I guess is needed each way? then drop the
>> same transponder and how much more erp each way will be needed to have the
>> same level of contact quality?
>>
>> Joe WB9SBD
>>
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. 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
------------------------------
Message: 11
Date: Sat, 07 Nov 2015 14:45:13 -0600
From: Jerry Buxton <amsat@xxxx.xxx>
To: Joe <nss@xxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Link Budget
Message-ID: <5e8c329c-552f-4cf7-b58b-93435b0974e1@xxxxx.xxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Actually, we are working on one that will be orbiting the Moon...
Jerry
N0JY
On Nov 7, 2015 1:57 PM, Joe <nss@xxx.xxx> wrote:
>
> Can anyone here run a link budget for me?
>
> I'm in an? slight heated debate with some people, About how they have
> heard about the possible Geo synchronous bird coming up, and they are
> all wondering why don't "THEY" I like the "THEY" part, anyway why don't
> they just put it on the moon.
>
> I gave them several reasons why a Geo bird is better,
>
> 1- It is there 24/7 where the moon is visible less than 50% of the day
>
> 2- the Geo bird doesn't move ( or extremely little) so set the antenna
> and forget it. Where the moon requires tracking programs and antennas
> that can move in AZ and EL
>
> 3- Useable "Window" The amount of the earths surface that can see either
> is soo close to the same why bother I bet a geo bird would be at least
> close to 90% of what the moon see's
>
> 4- And finally antennas and power required. The moon being soooo much
> farther away the amount of power needed each way has to be MUCH more.
> And thats what I was wondering say you had a nice decent transponder in
> Geo orbit. what power levels say ERP I guess is needed each way?? then
> drop the same transponder and how much more erp each way will be needed
> to have the same level of contact quality?
>
> Joe WB9SBD
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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
>
------------------------------
Message: 12
Date: Sat, 7 Nov 2015 15:10:17 -0600
From: "KA9QJG" <KA9QJG@xxxxxxx.xxx>
To: "'Joe'" <nss@xxx.xxx>, <AMSAT-BB@xxxxx.xxx>
Subject: Re: [amsat-bb] Link Budget
Message-ID: <052c01d119a0$b465b080$1d311180$@xxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Joe And Others for many years I have Heard thoughts about a Geo synchronous
well mostly it was the cost, But I also heard a lot of people say if We
had a Geo type bird We would have the people who like to setting us Big ants
lots of power and just set and be on the birds all the time .
Unfortunately I know We do have this type on the air I haves no idea if this
would actually happen or not
73 De Don KA9QJG
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Joe
Sent: Saturday, November 07, 2015 1:58 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Link Budget
Can anyone here run a link budget for me?
I'm in an slight heated debate with some people, About how they have heard
about the possible Geo synchronous bird coming up, and they are all
wondering why don't "THEY" I like the "THEY" part, anyway why don't they
just put it on the moon.
I gave them several reasons why a Geo bird is better,
1- It is there 24/7 where the moon is visible less than 50% of the day
2- the Geo bird doesn't move ( or extremely little) so set the antenna and
forget it. Where the moon requires tracking programs and antennas that can
move in AZ and EL
3- Useable "Window" The amount of the earths surface that can see either is
soo close to the same why bother I bet a geo bird would be at least close to
90% of what the moon see's
4- And finally antennas and power required. The moon being soooo much
farther away the amount of power needed each way has to be MUCH more.
And thats what I was wondering say you had a nice decent transponder in Geo
orbit. what power levels say ERP I guess is needed each way? then drop the
same transponder and how much more erp each way will be needed to have the
same level of contact quality?
Joe WB9SBD
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. 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
------------------------------
Message: 13
Date: Sat, 7 Nov 2015 16:22:13 -0500
From: Paul Stoetzer <n8hm@xxxx.xxx>
To: KA9QJG <KA9QJG@xxxxxxx.xxx>
Cc: Joe <nss@xxx.xxx>, "amsat-bb@xxxxx.xxxx <AMSAT-BB@xxxxx.xxx>
Subject: Re: [amsat-bb] Link Budget
Message-ID:
<CABzOSOoLpP05UzjiE2fHkZ-7pwbH2+eBmcOJJYzc7EB78Da1VA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
The good thing is that high power at 5 GHz is expensive, so I doubt
anyone will be running too much more than they have to on P4B!
73,
Paul, N8HM
On Sat, Nov 7, 2015 at 4:10 PM, KA9QJG <KA9QJG@xxxxxxx.xxx> wrote:
> Joe And Others for many years I have Heard thoughts about a Geo synchronous
> well mostly it was the cost, But I also heard a lot of people say if We
> had a Geo type bird We would have the people who like to setting us Big ants
> lots of power and just set and be on the birds all the time .
> Unfortunately I know We do have this type on the air I haves no idea if this
> would actually happen or not
>
> 73 De Don KA9QJG
>
> -----Original Message-----
> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Joe
> Sent: Saturday, November 07, 2015 1:58 PM
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Link Budget
>
> Can anyone here run a link budget for me?
>
> I'm in an slight heated debate with some people, About how they have heard
> about the possible Geo synchronous bird coming up, and they are all
> wondering why don't "THEY" I like the "THEY" part, anyway why don't they
> just put it on the moon.
>
> I gave them several reasons why a Geo bird is better,
>
> 1- It is there 24/7 where the moon is visible less than 50% of the day
>
> 2- the Geo bird doesn't move ( or extremely little) so set the antenna and
> forget it. Where the moon requires tracking programs and antennas that can
> move in AZ and EL
>
> 3- Useable "Window" The amount of the earths surface that can see either is
> soo close to the same why bother I bet a geo bird would be at least close to
> 90% of what the moon see's
>
> 4- And finally antennas and power required. The moon being soooo much
> farther away the amount of power needed each way has to be MUCH more.
> And thats what I was wondering say you had a nice decent transponder in Geo
> orbit. what power levels say ERP I guess is needed each way? then drop the
> same transponder and how much more erp each way will be needed to have the
> same level of contact quality?
>
> Joe WB9SBD
>
> _______________________________________________
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>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
expressed
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AMSAT-NA.
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Subject: Digest Footer
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Sent via amsat-bb@xxxxx.xxx.
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AMSAT-NA.
Not an AMSAT member? Join now to support the amateur satellite program!
http://www.amsat.org/mailman/listinfo/amsat-bb
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End of AMSAT-BB Digest, Vol 10, Issue 341
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