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CX2SA > SATDIG 24.03.09 01:31l 880 Lines 29933 Bytes #999 (0) @ WW
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Today's Topics:
1. Re: AO51 SSTV (Greg D.)
2. Re: yagi design (Art McBride)
3. Re: AO51 SSTV (John Price)
4. Re: AO51 SSTV (Simon (HB9DRV))
5. Re: Last heard AO-7 435 beacon? (Greg Beat)
6. Re: yagi design (Glen Zook)
7. Re: down converter (laura halliday)
8. Sat Help - I am in STOK-ON-TRENT looking for help in setting
up Satellite antenna and systems (Stephen Thornber)
9. Re: down converter (Greg D.)
10. P3E question....... (Chad Phillips)
11. Re: AO51 SSTV (John Price)
12. Re: down converter (Tim Tuck)
13. Re: down converter (Luc Leblanc)
14. Down converters (Douglas Anoman)
15. f.s. S-band downverter (Patrick Marineau)
16. ISS/Discovery orbital adjustment (Alan Sieg WB5RMG)
----------------------------------------------------------------------
Message: 1
Date: Sun, 22 Mar 2009 12:59:51 -0700
From: "Greg D." <ko6th_greg@xxxxxxx.xxx>
Subject: [amsat-bb] Re: AO51 SSTV
To: <amsat-bb@xxxxx.xxx>
Message-ID: <BLU133-W92DD52B96E5A4AA107748A9950@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Back in the dark days when I was running Windows 98se at home, MMSSTV was one
of the best pieces of software around. It probably still is, but I'm now
running almost exclusively Linux, and I haven't been able to get it to run
there. Instead I have been using QSSTV, which works ok.
I have a simple switch-based patch panel that I use to interconnect the PC and
the various rigs that I have in the shack. I have the line-in and line-out
going to the box, and all the rigs Tx and Rx outputs (where you'd hook them to
a TNC, for example) going there too, and I pick which rig gets patched to the
PC. Nothing fancy, but it works.
Greg KO6TH
> Date: Sun, 22 Mar 2009 09:05:44 -0700
> From: kd0ar@xxxxxxxxx.xxx
> To: AMSAT-BB@xxxxx.xxx
> Subject: [amsat-bb] Re: AO51 SSTV
>
>
> I'm betting most use mmsstv http://mmhamsoft.amateur-radio.ca/mmsstv/
>
> Also, I have a question:
>
> Is any digital SSTV being done on the birds? The program for the digital
SSTV is "Digtrx", http://www.kiva.net/~djones/digtrx.htm
>
> The digital SSTV is based on a modification of "DRM", and I've used it on 20
meter SSB, but it should work on FM even better
> if you have a decent s/n ratio.
>
> Michael Heim
> Chief Engineer, Forever Broadcasting
> New Castle PA
> WKST WJST WWGY
> 814-671-0666
> ARS KD0AR
>
>
>
> ----- Original Message ----
> From: Ron Miles <conimicut@xxxxx.xxx>
> To: amsat-bb@xxxxx.xxx
> Sent: Sunday, March 22, 2009 11:30:22 AM
> Subject: [amsat-bb] AO51 SSTV
>
> What are most AMSAT folks using for SSTV software? My objective is to TX and
> RX SSTV via AO-51 or ISS using a soundcard interface like the Rigblaster
> Nomic. BTW, enjoyed the VS mode this past week on AO-51.
> Thanks es 73,
> Ron, n6paa
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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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Message: 2
Date: Sun, 22 Mar 2009 13:26:20 -0700
From: "Art McBride" <kc6uqh@xxx.xxx>
Subject: [amsat-bb] Re: yagi design
To: <gzook@xxxxx.xxx>, <AMSAT-BB@xxxxx.xxx>, "'Bert Audenaert'"
<audbert@xxxxx.xxx>
Message-ID: <62214980A1254226A6C1742A7399F747@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
Glen,
How a Quagi or Yagi works is dependent on element spacing which can give
narrow band higher gain performance at the expense of F/B ratio and very low
driven element impedance. An un-normalized impedance Yagi can have an
impedance of less than 20 Ohms. The distance of the first director has the
most control over reducing the antenna driven element impedance.
A folded dipole can be used for an initial impedance of greater than 200
Ohms, or an inductor (hair pin match) can be used to raise the dipole
impedance. The distance of the first director has the most control over the
antenna impedance.
The initial impedance of a loop is 100 Ohms (Quagi), and the Dipole is 75
Ohms (Yagi) hence there are some cases that the Quagi will provide a closer
to 50 Ohm un-normalized impedance than a Yagi. All require some means of
transformation of balanced to unbalanced when using a coax feed line.
A quad type Yagi has slightly more gain per number of elements and would be
the best choice for gain VS boom length.
Art, KC6UQH
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Glen Zook
Sent: Sunday, March 22, 2009 10:30 AM
To: AMSAT-BB@xxxxx.xxxx Bert Audenaert
Subject: [amsat-bb] Re: yagi design
For a "bullet proof" and "cookbook" antenna design you cannot beat the
quagi. The do not require any special feedline matching or anything else.
Basically, build it like the instructions and they work the first time. Go
to
http://commfaculty.fullerton.edu/woverbeck/quagi.htm
for instructions on building one.
Glen, K9STH
Website: http://k9sth.com
--- On Sun, 3/22/09, Bert Audenaert <audbert@xxxxx.xxx> wrote:
Hereby my first mail on this BB. I want to start with satellite
communication. I already build an eggbeater antenna, but togheter with my
TS2000 i receive only very poor signals. To work more comfotable, i want to
build two yagi antennas (one for 2m and one for 70cm) with an
azimuth/elevation rotor system.
For the 2m version, I took the following design of DK7ZB as a start:
http://www.qsl.net/dk7zb/start1.htm -> 144MHz yasis -> 6 El-28-Ohm (2m60).
Because I want to tune this antenna to the upper side of the 2m band (I had
145.800MHz as center frequency in mind), I entered the data of this yagi in
MMANA GAL, a free NEC program (http://mmhamsoft.amateur-radio.ca/mmana/).
After Calculation, i got totally diferent results as on the DK7ZB website.
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
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------------------------------
Message: 3
Date: Sun, 22 Mar 2009 16:34:39 -0400
From: John Price <n4qwf1@xxxxx.xxx>
Subject: [amsat-bb] Re: AO51 SSTV
To: Ron Miles <conimicut@xxxxx.xxx>, "amsat-bb@xxxxx.xxxx
<amsat-bb@xxxxx.xxx>
Message-ID:
<8d1b8e80903221334i30505f26ma9cca361ef2cb4fe@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
I am using Ham Radio Deluxe for everything now days. Controls my
FT-847 nicely. Not to say it is best at any one thing but sure covers
about anything I could ever wont to do and then some. Pretty nice
satellite tracking too.
73's << John
On Sun, Mar 22, 2009 at 11:30 AM, Ron Miles <conimicut@xxxxx.xxx> wrote:
> What are most AMSAT folks using for SSTV software? My objective is to TX and
> RX SSTV via AO-51 or ISS using a soundcard interface like the Rigblaster
> Nomic. BTW, enjoyed the VS mode this past week on AO-51.
> Thanks es 73,
> Ron, n6paa
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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
>
--
N4QWF Amateur Radio Operator
AO-7,AO-27,FO-29,SO-50,AO-51,VO-52,ISS
Email N4QWF@xxxxx.xxx
Echolink nodes #110903 -L #388463
http://home.comcast.net/~n4qwf/site/
Formerly KC4AHW VK3FEZ
Amsat Member #27845
DXCC #33,478
VUCC SAT #135
WAS SAT #296
51 on AO-51 #13
LON -79.256 LAT 37.459 Grid FM07il
>From the Foothills of the Blueridge
*Life should not be a journey to the grave with the intention of
arriving safely in a pretty and well preserved body, but rather to
skid in broadside, thoroughly used up, totally worn out, and loudly
proclaiming - "WOW, What a ride!"
------------------------------
Message: 4
Date: Sun, 22 Mar 2009 21:42:27 +0100
From: "Simon \(HB9DRV\)" <simon@xxxxxx.xx>
Subject: [amsat-bb] Re: AO51 SSTV
To: <amsat-bb@xxxxx.xxx>
Message-ID: <742E0CD8733B4698A8D64651F0F83EC3@xxxxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
FWIW I'm getting antennas up and will soon be improving the SSTV and
SatTrack part of HRD.
Been busy - very, very busy writing HRD 5.0.
Simon Brown, HB9DRV
www.ham-radio-deluxe.com
----- Original Message -----
From: "John Price" <n4qwf1@xxxxx.xxx>
>I am using Ham Radio Deluxe for everything now days. Controls my
> FT-847 nicely. Not to say it is best at any one thing but sure covers
> about anything I could ever wont to do and then some. Pretty nice
> satellite tracking too.
------------------------------
Message: 5
Date: Sun, 22 Mar 2009 16:17:33 -0500
From: "Greg Beat" <gregory.beat@xxxxxxx.xxx>
Subject: [amsat-bb] Re: Last heard AO-7 435 beacon?
To: <amsat-bb@xxxxx.xxx>
Message-ID: <7E2FE1C12D7B4B0D9D420092971F7CA7@xxxxxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
Alan -
I think you are correct.
I heard the AO-7 2-meter beacon the last minute of an overhead pass at sunset
(local) the next day (18th) last week -- while waiting for an ISS pass. I
actually was surprised (and pleased) to hear it on my Icom IC-211 as it was
headed over Canada!
greg
w9gb
Date: Sat, 21 Mar 2009 20:24:51 -0000
From: "Alan Cresswell" <alancresswell@xxxx.xx.xx>
Subject: [amsat-bb] Re: Last heard AO-7 435 beacon?
To: <amsat-bb@xxxxx.xxx>
Message-ID: <FAAA6A54FC78464AA088362C417DD59F@xxxxxxxxx>
Content-Type: text/plain; charset="us-ascii"
Hi Mark,
The mode A beacon was always very strong here but I have not heard it for
the last few days. The last telemetry I copied was 17 March at 0900 UT.
Alan
ZL2BX
------------------------------
Message: 6
Date: Sun, 22 Mar 2009 14:40:42 -0700 (PDT)
From: Glen Zook <gzook@xxxxx.xxx>
Subject: [amsat-bb] Re: yagi design
To: AMSAT-BB@xxxxx.xxxx "'Bert Audenaert'" <audbert@xxxxx.xxx>,
kc6uqh@xxx.xxx
Message-ID: <473684.29502.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
I am very familiar with how a yagi or quagi works. You can use an optimizing
computer program like YagiMax to vary any, or all, of the parameters and the
program will tell you things like gain, front-to-back ratio, the SWR at
various frequencies, the E plane and H plane radiation patterns, and the
impedance/reactance of the driven element.
What Overbeck has done with the quagi is to optimize the antenna at various
frequencies including a direct feed of the loop driven element to match 50
ohms without the need for anything except a direct connection of the 50 ohm
coaxial cable. The result is a "cookbook" antenna that when built according
to the directions works each, and every, time.
As for using a folded dipole driven element: If the spacing between the upper
and lower sides is correct, and if you use a 2:1 ratio of the diameters of the
tubing used for the upper and lower sides of the driven element you can easily
obtain a feed point impedance of 200 ohms. This then can be "matched" to 50
ohm coaxial cable by utilizing a 4:1 balun made from a 1/2 wave or odd
multiple of 1/2 wave coaxial cable. In fact, that is what I do with my
primary 6-meter yagi and my primary 2-meter yagi. Also, my primary 432 MHz
antenna which has 27 elements and a simulated plane reflector also uses a
folded dipole driven element with a coaxial balun.
Now my 6-meter yagi and 2-meter yagi are both fed with 1/2 inch Andrew Heliax
and my 432 MHz yagi is fed with 7/8ths inch Heliax. In fact, virtually all of
my antennas are fed with 1/2 inch Heliax including my 160 meter antennas.
However, over the years I have obtained quite a few 100 foot lengths of Heliax
with connectors for absolutely no cost. Therefore, to use an inferior quality
feedline I would actually have to spend money! Therefore, being that I firmly
believe in the principles of the conservation of my finances and labor (you
can say "cheap and lazy" if you wish) I go with using the Heliax that I have
on hand (there are 10 Heliax runs up my main tower and 4 up my "short" tower).
There are photographs of my antennas at
http://k9sth.com/uploads/newantenna.JPG
As for the design of the late Clarence Moore, W9LZX, the quad (first used at
shortwave broadcaster HCJB in Quito, Ecuador, in the late 1930s), modern
experiments as well as computer calculations have shown that the quad doesn't
really have any more gain than a yagi with a similar number of elements at
heights above 1/2 wavelength above ground. Like the yagi the spacing between
elements, the size of the elements, and so forth, definitely have an effect on
the gain, front-to-back, and the bandwidth of the antenna. The experiments of
the 1940s and early 1950s which showed a slight edge of the quad have pretty
much been set aside by modern techniques.
The quad is a good antenna. However, due to its volume and materials needed
to construct, many operators definitely prefer the yagi. I prefer yagi
antennas although I did make a 4-element quad which my eldest daughter used in
some radio astronomy experiments at 137 MHz when she was in middle school and
high school. About 35 years ago I obtained a tri-band (20, 15, 10) "spider"
quad in a trade and put it together in my back yard. Then I looked around and
decided that due to the placement of power lines at the house in which I was
living that it was not safe to put up the antenna. About that time my wife
walked out into the yard and told me in no uncertain terms that I was NOT
going to put up THAT antenna. She pointed to the yagi that I already had in
the air and said that type of antenna was fine. To this day she still
believes that she got her "way" about the quad.
Glen, K9STH
Website: http://k9sth.com
--- On Sun, 3/22/09, Art McBride <kc6uqh@xxx.xxx> wrote:
How a Quagi or Yagi works is dependent on element spacing which can give
narrow band higher gain performance at the expense of F/B ratio and very low
driven element impedance. An un-normalized impedance Yagi can have an
impedance of less than 20 Ohms. The distance of the first director has the
most control over reducing the antenna driven element impedance.
A folded dipole can be used for an initial impedance of greater than 200 Ohms,
or an inductor (hair pin match) can be used to raise the dipole impedance. The
distance of the first director has the most control over the antenna
impedance.
The initial impedance of a loop is 100 Ohms (Quagi), and the Dipole is 75 Ohms
(Yagi) hence there are some cases that the Quagi will provide a closer to 50
Ohm un-normalized impedance than a Yagi. All require some means of
transformation of balanced to unbalanced when using a coax feed line.
A quad type Yagi has slightly more gain per number of elements and would be
the best choice for gain VS boom length.
------------------------------
Message: 7
Date: Sun, 22 Mar 2009 15:11:08 -0700
From: laura halliday <marsgal42@xxxxxxx.xxx>
Subject: [amsat-bb] Re: down converter
To: <amsat-bb@xxxxx.xxx>
Message-ID: <BAY119-W47788BEC3901166D42F64DAE950@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
KC9MLN asked:
> Where and how do i get a down converter from 2.4 to 435 mhz?
Make one. The bits and pieces are all off-the-shelf components and modules.
Laura Halliday VE7LDH "Que les nuages soient notreGrid: CN89mg
pied a terre..."ICBM: 49 16.05 N 122 56.92 W - Hospital/Shafte
_________________________________________________________________
Clavardez avec tout le groupe et rassemblez-les.
http://go.microsoft.com/?linkid=9650742
------------------------------
Message: 8
Date: Sun, 22 Mar 2009 22:23:11 +0000
From: Stephen Thornber <skthornber@xxx.xxx>
Subject: [amsat-bb] Sat Help - I am in STOK-ON-TRENT looking for help
in setting up Satellite antenna and systems
To: "AMSAT-BB@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Message-ID: <6555CBDD-0075-4967-9CB2-D36BD05A0106@xxx.xxx>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
Looking for an amateur buddy in NW Staffs to help / guide me in my
endeavor to set up a satellite system
Stephen
G6SGA
On 22 Mar 2009, at 19:59, Greg D. wrote:
>
> Back in the dark days when I was running Windows 98se at home,
> MMSSTV was one of the best pieces of software around. It probably
> still is, but I'm now running almost exclusively Linux, and I
> haven't been able to get it to run there. Instead I have been using
> QSSTV, which works ok.
>
> I have a simple switch-based patch panel that I use to interconnect
> the PC and the various rigs that I have in the shack. I have the
> line-in and line-out going to the box, and all the rigs Tx and Rx
> outputs (where you'd hook them to a TNC, for example) going there
> too, and I pick which rig gets patched to the PC. Nothing fancy,
> but it works.
>
> Greg KO6TH
>
>
>> Date: Sun, 22 Mar 2009 09:05:44 -0700
>> From: kd0ar@xxxxxxxxx.xxx
>> To: AMSAT-BB@xxxxx.xxx
>> Subject: [amsat-bb] Re: AO51 SSTV
>>
>>
>> I'm betting most use mmsstv http://mmhamsoft.amateur-radio.ca/
>> mmsstv/
>>
>> Also, I have a question:
>>
>> Is any digital SSTV being done on the birds? The program for the
>> digital SSTV is "Digtrx", http://www.kiva.net/~djones/digtrx.htm
>>
>> The digital SSTV is based on a modification of "DRM", and I've used
>> it on 20 meter SSB, but it should work on FM even better
>> if you have a decent s/n ratio.
>>
>> Michael Heim
>> Chief Engineer, Forever Broadcasting
>> New Castle PA
>> WKST WJST WWGY
>> 814-671-0666
>> ARS KD0AR
>>
>>
>>
>> ----- Original Message ----
>> From: Ron Miles <conimicut@xxxxx.xxx>
>> To: amsat-bb@xxxxx.xxx
>> Sent: Sunday, March 22, 2009 11:30:22 AM
>> Subject: [amsat-bb] AO51 SSTV
>>
>> What are most AMSAT folks using for SSTV software? My objective is
>> to TX and
>> RX SSTV via AO-51 or ISS using a soundcard interface like the
>> Rigblaster
>> Nomic. BTW, enjoyed the VS mode this past week on AO-51.
>> Thanks es 73,
>> Ron, n6paa
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. 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
>>
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. 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
>
> _________________________________________________________________
> Get quick access to your favorite MSN content with Internet Explorer
> 8.
> http://ie8.msn.com/microsoft/internet-explorer-8/en-
us/ie8.aspx?ocid=B037MSN55C0701A
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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
------------------------------
Message: 9
Date: Sun, 22 Mar 2009 16:03:51 -0700
From: "Greg D." <ko6th_greg@xxxxxxx.xxx>
Subject: [amsat-bb] Re: down converter
To: <marsgal42@xxxxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID: <BLU133-W2131A0AE713C9BEF7D6DAEA9950@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Or modify one.
I wanted an IF in the 300 mHz range, so that I wouldn't have to worry about
interference from either a 2m or 70cm uplink. I'm using an ICOM R-7000 all
mode scanner for the IF receiver, so the odd frequency isn't a problem. It
was a fairly simple matter to swap crystals on a Drake 2880 and change out one
cap, to move the local oscillator to 2100 mHz. That puts our 2401.x mHz
downlinks at 301.x You might be able to push it far enough to get to 435.
You'd need to get the LO down to 7,679.69 kHz (7.68 mHz), if my calculations
are correct.
Greg KO6TH
> From: marsgal42@xxxxxxx.xxx
> To: amsat-bb@xxxxx.xxx
> Date: Sun, 22 Mar 2009 15:11:08 -0700
> Subject: [amsat-bb] Re: down converter
>
>
> KC9MLN asked:
> > Where and how do i get a down converter from 2.4 to 435 mhz?
> Make one. The bits and pieces are all off-the-shelf components and modules.
> Laura Halliday VE7LDH "Que les nuages soient notreGrid: CN89mg
pied a terre..."ICBM: 49 16.05 N 122 56.92 W - Hospital/Shafte
>
>
_________________________________________________________________
Get quick access to your favorite MSN content with Internet Explorer 8.
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------------------------------
Message: 10
Date: Sun, 22 Mar 2009 18:04:21 -0500
From: Chad Phillips <kg0mw@xxxxxxxxxxxxxxxxxxxxxx.xxx>
Subject: [amsat-bb] P3E question.......
To: amsat-bb@xxxxx.xxx
Message-ID:
<2C46F105-2B66-4961-A5E9-F15FFA79D9E6@xxxxxxxxxxxxxxxxxxxxxx.xxx>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
I have been trying to find the latest news on P3E on the NA, UK and Dl
websites. Really cannot find anything. Can anyone enlighten me to the
status and or current news of the sat?
Thanks,
Chad
kg0mw
------------------------------
Message: 11
Date: Sun, 22 Mar 2009 19:31:38 -0400
From: John Price <n4qwf1@xxxxx.xxx>
Subject: [amsat-bb] Re: AO51 SSTV
To: "Simon (HB9DRV)" <simon@xxxxxx.xx>, "amsat-bb@xxxxx.xxxx
<amsat-bb@xxxxx.xxx>
Message-ID:
<8d1b8e80903221631t118a3e9exf6edc974de000582@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
About the only thing I could hope for Xmas is a DDE for my Yaesu 5400
rotor control. I can wait. Uni-Trac wont do Vista and as I understand
there is no support for my Uni-Trac box anymore. I still see them
advertised in the Amsat paper. Hope folks check it out before they
buy.
73's << John
On Sun, Mar 22, 2009 at 4:42 PM, Simon (HB9DRV) <simon@xxxxxx.xx> wrote:
> FWIW I'm getting antennas up and will soon be improving the SSTV and
> SatTrack part of HRD.
>
> Been busy - very, very busy writing HRD 5.0.
>
> Simon Brown, HB9DRV
> www.ham-radio-deluxe.com
>
> ----- Original Message -----
> From: "John Price" <n4qwf1@xxxxx.xxx>
>
>
>>I am using Ham Radio Deluxe for everything now days. Controls my
>> FT-847 nicely. ?Not to say it is best at any one thing but sure covers
>> about anything I could ever wont to do and then some. Pretty nice
>> satellite tracking too.
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
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--
N4QWF Amateur Radio Operator
AO-7,AO-27,FO-29,SO-50,AO-51,VO-52,ISS
Email N4QWF@xxxxx.xxx
Echolink nodes #110903 -L #388463
http://home.comcast.net/~n4qwf/site/
Formerly KC4AHW VK3FEZ
Amsat Member #27845
DXCC #33,478
VUCC SAT #135
WAS SAT #296
51 on AO-51 #13
LON -79.256 LAT 37.459 Grid FM07il
>From the Foothills of the Blueridge
*Life should not be a journey to the grave with the intention of
arriving safely in a pretty and well preserved body, but rather to
skid in broadside, thoroughly used up, totally worn out, and loudly
proclaiming - "WOW, What a ride!"
------------------------------
Message: 12
Date: Mon, 23 Mar 2009 11:11:27 +1100
From: "Tim Tuck" <timt@xxxxxxx.xxx>
Subject: [amsat-bb] Re: down converter
To: amsat-bb@xxxxx.xxx
Message-ID: <49C6D3AF.60301@xxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Douglas Anoman wrote:
> Where and how do i get a down converter from 2.4 to 435 mhz?
>
>
Hi Doug you need to find a CalAmp 130415 MMDS down converter to modify.
With the right crystal they produce an IF at 435 Mhz.
I wrote an article on modification back in 2005 for the local club mag
that I'll send you off list detailing the conversion.
regards
Tim
--
VK2XTT :: QF56if :: BMARC :: WIA :: AMSAT-VK :: AMSAT
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Message: 13
Date: Sun, 22 Mar 2009 20:09:41 -0400
From: Luc Leblanc <lucleblanc6@xxxxxxxxx.xx>
Subject: [amsat-bb] Re: down converter
To: amsat-bb@xxxxx.xxx
Message-ID: <49C69B05.28712.19698CE@xxxxxxxxxxx.xxxxxxxxx.xx>
Content-Type: text/plain; charset=US-ASCII
On 22 Mar 2009 at 16:03, Greg D. wrote:
>
> Or modify one.
>
> I wanted an IF in the 300 mHz range, so that I wouldn't have to worry about
interference from either a 2m or 70cm uplink.
>I'm using an ICOM R-7000 all mode scanner for the IF receiver, so the odd
frequency isn't a problem. It was a fairly simple
>matter to swap crystals on a Drake 2880 and change out one cap, to move the
local oscillator to 2100 mHz.
>That puts our 2401.x mHz downlinks at 301.x You might be able to push it far
enough to get to 435. You'd need to get the LO down to
7,679.69 kHz (7.68 mHz), if my calculations are correct.
>
> Greg KO6TH
>
I'm using a PCR-1000 for the IF receiver tuning 123.xxxMHZ on a AIDC 3733
downconverter and i don't get any interference from even with 50w
on a 14 elements cross yagi on 145mhz uplink.
No filtering just the RG-59U plugged into the PCR-1000 and with the AFC button
depress you have a nice doppler correction without any bell
and whistle.
P.S. I am still struggling with the deep fades more noticeable on the south to
north pass on the south portion and on the north to south on
the south portion too.If he's spin stabilized there is something blocking the
path under some angles.Probably a new Irish Leprechaun
playing havoc up there...I'm guessing it is the same one who was on AO-40.
We will have to wait untill the next S downlink session to test our S band
gear again. Now it's SSTV pictures time.
"-"
Luc Leblanc VE2DWE
Skype VE2DWE
www.qsl.net/ve2dwe
WAC BASIC CW PHONE SATELLITE
------------------------------
Message: 14
Date: Mon, 23 Mar 2009 11:07:33 +0000
From: Douglas Anoman <danoman@xxxxx.xxxxxxxx.xxx>
Subject: [amsat-bb] Down converters
To: <amsat-bb@xxxxx.xxx>
Message-ID: <COL108-W570E73646552A6163219ACDA920@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
I would like to thank everyone for helping me find the downconverters.
KC9MLN
Thank You
Douglas Anoman
------------------------------
Message: 15
Date: Mon, 23 Mar 2009 13:02:05 GMT
From: "Patrick Marineau" <wa9sui@xxxxxxxxxxx.xxx>
Subject: [amsat-bb] f.s. S-band downverter
To: amsat-bb@xxxxx.xxx
Message-ID: <20090323.090205.19509.0@xxxxxxxxx.xxx.xxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
For Sale: K5GNA AIDC 3731 downverter. Retuned for 2400 Mhz with 2 meter I.F.
installed, with power supply and bias tee, cables, reflector. Unit is new,
never used. Purchased for AO-40, but bird died before I could use it. $55
shipped CONUS
Thanks,
Pat K9HF
____________________________________________________________
Free information - Scholarships for college, university or tech school. Click
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------------------------------
Message: 16
Date: Mon, 23 Mar 2009 11:12:18 -0500 (CDT)
From: "Alan Sieg WB5RMG" <wb5rmg@xxxxxxx.xxx>
Subject: [amsat-bb] ISS/Discovery orbital adjustment
To: amsat-bb@xxxxx.xxx
Message-ID: <1681.198.119.224.78.1237824738.squirrel@xxx.xxxxxxx.xxx>
Content-Type: text/plain;charset=iso-8859-1
The ISS/Discovery combination did a little dance yesterday in adjusting
the orbit to avoid some more 'space junk'... It may not have been enough
to be noticable right away, but a new element set will be in order soon.
More detail is available from :
http://spaceflightnow.com/shuttle/sts119/090322fd8/index4.html
Thanks /;^)
--
<- Licensed in 1976, WB5RMG = Alan Sieg * AMSAT#20554 ->
<- http://www.somenet.net * http://wb5rmg.somenet.net ->
<- http://www.linkedin.com/in/alansieg * My 'Day Job' ->
------------------------------
_______________________________________________
Sent via amsat-bb@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
http://amsat.org/mailman/listinfo/amsat-bb
End of AMSAT-BB Digest, Vol 4, Issue 139
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