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CX2SA > SATDIG 22.08.08 15:25l 891 Lines 27954 Bytes #999 (0) @ WW
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Sent: 080822/1327Z @:CX2SA.LAV.URY.SA #:27664 [Minas] FBB7.00e $:27664_CX2SA
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: AO-51 V/S Mode Ops, Some Observations (Simon (HB9DRV))
2. Re: AO-51 V/S Mode Ops, Some Observations (Simon (HB9DRV))
3. Re: Compass over ZL (Alan Cresswell)
4. Re: Compass over ZL (Alan Cresswell)
5. Florida AMSAT Net (David J)
6. Re: Compass over ZL (Alan Cresswell)
7. Re: AO-51 V/S Mode Ops, Some Observations (Joe Westbrook)
8. Re: AO-51 V/S Mode Ops, Some Observations (Joe Westbrook)
9. FW: [PNWVHFS] FOR SALE IC820H (w7lrd(AT)comcast.net)
10. DO-64 observations (WILLIAMS MICHAEL)
11. compass-1 (Mr Jeffrey L Ross)
12. Re: Wanted, printable, scalable clockwise protractor image (i8cvs)
13. Re: compass-1 (Mike Rupprecht)
14. Re: LMR 400 (Nate Duehr)
15. COMPASS-1 beacon heard (Mike Rupprecht)
16. Back to mainland Scotland (John Mock)
17. Re: COMPASS-1 beacon heard (Mike Rupprecht)
----------------------------------------------------------------------
Message: 1
Date: Thu, 21 Aug 2008 21:07:23 +0200
From: "Simon \(HB9DRV\)" <simon(AT)hb9drv.ch>
Subject: [amsat-bb] Re: AO-51 V/S Mode Ops, Some Observations
To: <amsat-bb(AT)amsat.org>
Message-ID: <91464C2B776C4BD0AF0CB5CC40CE1D3E(AT)doubletrouble>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
We're probably looking at Saturday or Sunday for a technology preview.
Currently I'm adding dual radio support - radio 1 used for RX, radio 2 used
for TX. For example 2 x FT-857 or whatever you have in the shack.
Next week is 'add all rotators' week.
This evening - two episodes of Dr. House on Swiss TV :-)
Simon Brown, HB9DRV
www.ham-radio-deluxe.com
----- Original Message -----
From: "Alan P. Biddle" <APBIDDLE(AT)UNITED.NET>
> The current version of HRD has a buggy Doppler correction, and mode-S is
> so
> extreme it will show up there. However, Simon is doing a full rewrite of
> the satellite function, and it should be out for testing any day now.
------------------------------
Message: 2
Date: Thu, 21 Aug 2008 21:08:06 +0200
From: "Simon \(HB9DRV\)" <simon(AT)hb9drv.ch>
Subject: [amsat-bb] Re: AO-51 V/S Mode Ops, Some Observations
To: <amsat-bb(AT)amsat.org>
Message-ID: <116C1B72302249449CAFE986B73BFC1A(AT)doubletrouble>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=response
p l o n k a
Some screenshots:
http://www.ham-radio-
deluxe.com/Programs/HRDSatelliteTracking/tabid/97/Default.aspx
Simon Brown, HB9DRV
www.ham-radio-deluxe.com
----- Original Message -----
From: "Simon (HB9DRV)" <simon(AT)hb9drv.ch>
>
> This evening - two episodes of Dr. House on Swiss TV :-)
>
------------------------------
Message: 3
Date: Thu, 21 Aug 2008 19:46:25 -0000
From: "Alan Cresswell" <alancresswell(AT)xtra.co.nz>
Subject: [amsat-bb] Re: Compass over ZL
To: <amsat-bb(AT)amsat.org>
Message-ID: <7FDADC27B8544FF783EEA174AAA8B322(AT)Dell1>
Content-Type: text/plain; charset="US-ASCII"
Hi Mike,
Sent commands at 1006 UT at 8 deg el. on the eclipse pass last night and the
first three were acknowledged (14, 13, 16) but no further commands were
accepted. Tried again at higher elevations later in the pass but no
response.
First pass this morning (4.5 deg max el) all commands except the test beacon
command were acknowledged. No beacon heard but pass very short.
Alan
ZL2BX
------------------------------
Message: 4
Date: Thu, 21 Aug 2008 21:54:58 -0000
From: "Alan Cresswell" <alancresswell(AT)xtra.co.nz>
Subject: [amsat-bb] Re: Compass over ZL
To: "'Robert Smith'" <dukenuke(AT)pixi.com>, <amsat-bb(AT)amsat.org>
Message-ID: <710AABF594B542BBBFCEF23C34FA8F22(AT)Dell1>
Content-Type: text/plain; charset="US-ASCII"
Hi Mike and Robert,
All commands sent and accepted at 2102 UT.
A test beacon was received 5min and 40 seconds after the test beacon
command.
A normal beacon began 3min and 40 seconds later but unfortunately Compass
was at zero deg elevation when the beacon began. I have a -1 deg horizon in
this direction so managed to get part of the frame as follows:
FF18090011710020........(LOS). The 11 in the middle was very noisy but
almost certain they are OK (Definitely 1 or 0) and just managed to confirm
that the heater was off before it went into the noise!
At least the system is up and running - good signal strength from the test
beacon.
Alan
ZL2BX
-----Original Message-----
From: Robert Smith [mailto:dukenuke(AT)pixi.com]
Sent: Thursday, 21 August 2008 20:14
To: Alan Cresswell
Subject: Re: [amsat-bb] Re: Compass over ZL
Aloha Alan
Compass will be over Hawaii within the
hour. I will send the heater off command
****14#200# and more importantly, listen
for any beacon. As she leaves me she
will be over u. With sunlight and all, between
the two of us you would think we could
catch a beacon. Keeping my fingers crossed
for around 2048Z.
73
robert NH7WN
in Honolulu
------------------------------
Message: 5
Date: Thu, 21 Aug 2008 18:30:28 -0400
From: "David J" <n4csitwo(AT)bellsouth.net>
Subject: [amsat-bb] Florida AMSAT Net
To: <amsat-bb(AT)amsat.org>
Cc: amsat-florida(AT)amsat.org
Message-ID: <000801c903dd$83da7e40$0202a8c0(AT)DHJ>
Content-Type: text/plain; charset="iso-8859-1"
Good Day Everyone,
For those of you that usually check into the Florida AMSAT Net at 19:30 ET
on Thursdays through the N4HHA repeater in Orlando, the repeater has a new
controller installed and appears to be working fine.
I haven't had a chance to speak with Mike about it, but I believe it is
capable of linking to the NI4CE repeater system as usual, so tonight's net
should go off without a hitch.
I won't be net control tonight due to water in my coax from Fay and a very
high SWR. I be present using a weak indoor antenna just to check in. K4ACB has
agreed to handle it tonight.
See you on the net,
Dave, AA4KN
------------------------------
Message: 6
Date: Thu, 21 Aug 2008 22:52:16 -0000
From: "Alan Cresswell" <alancresswell(AT)xtra.co.nz>
Subject: [amsat-bb] Re: Compass over ZL
To: <amsat-bb(AT)amsat.org>
Message-ID: <765246767A68435785FA8BC139322236(AT)Dell1>
Content-Type: text/plain; charset="US-ASCII"
Hi Mike,
All commands sent and acknowledged at 23:38:30 UT. No beacon or test
beacon.
Alan
ZL2BX
------------------------------
Message: 7
Date: Thu, 21 Aug 2008 18:21:30 -0500
From: "Joe Westbrook" <k7zt(AT)suddenlink.net>
Subject: [amsat-bb] Re: AO-51 V/S Mode Ops, Some Observations
To: "Andrew Glasbrenner" <glasbrenner(AT)mindspring.com>,
<amsat-bb(AT)amsat.org>, "Robert Felt"
<robertfelt(AT)bellsouth.net>
Cc: kb5yzg(AT)amsat.org
Message-ID: <005401c903e4$a4c0dee0$0702a8c0(AT)corp.global.level3.com>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=response
Drew:
The V/S Mode was fun!
I will look forward to the additional opportunities to get the doppler set
up correctly.
Regards,
- Joe K7ZT
----- Original Message -----
From: "Andrew Glasbrenner" <glasbrenner(AT)mindspring.com>
To: <k7zt(AT)suddenlink.net>; <amsat-bb(AT)amsat.org>; "Robert Felt"
<robertfelt(AT)bellsouth.net>
Cc: <kb5yzg(AT)amsat.org>
Sent: Thursday, August 21, 2008 1:06 PM
Subject: Re: [amsat-bb] Re: AO-51 V/S Mode Ops, Some Observations
> If you use the 910 for receive you could use the AFC feature to tune the
> downlink with no software required (once you acquire the signal). An HT or
> other simple low power transmitter is fine for the VHF uplink, and doesn't
> need to be tuned.
>
> SATPC32 will also tune the downlink provided you have it set up correctly
> with the downconverter offset.
>
> I'm real happy to hear folks enjoyed the V/S period, and am also happy to
> say that during the imminent 100% illumination period (beginning at the
> end of the month and lasting until next year) we hope to be able to run
> the S band downlink more often, and perhaps as an independent repeater
> along with the normal V/U.
>
> 73, Drew KO4MA
> AMSAT-NA VP Operations
>
> ----- Original Message -----
> From: <k7zt(AT)suddenlink.net>
> To: <amsat-bb(AT)amsat.org>; "Robert Felt" <robertfelt(AT)bellsouth.net>
> Cc: <kb5yzg(AT)amsat.org>
> Sent: Thursday, August 21, 2008 1:55 PM
> Subject: [amsat-bb] Re: AO-51 V/S Mode Ops, Some Observations
>
>
>> Hi Bob:
>> I too was on AO51 for the "S" Band event and I too found the doppler
>> tuning a challenge.
>>
>> I use Nova for the Antennas and Ham Radio Deluxe www.ham-radio-deluxe.com
>> for doppler. It usually does a good job most of the time, but I must be
>> doing something wrong when using it on AO51 S band.
>>
>> HRD is a feature rich CAT Program and is freeware!
>>
>> 73's
>> - Joe K7ZT
>>
>> ---- Robert Felt <robertfelt(AT)bellsouth.net> wrote:
>>> Thanks AMSAT for placing the AO-51 is V/S mode last week.
>>>
>>> It was the first time I have operated any S-band downlink. The AO-51 was
>>> really quiet on S-band downlink, not a lot of people yelling on top of
>>> each other and background noise was nil.
>>>
>>> I made some good QSOs including - N8BBQ, WB8OTH, N5UXT, N5AFV,
>>> KD8CAO, N8TLV, N5ZNL... and heard a lot more, but was too focused with
>>> the doppler to make contact.
>>>
>>> My station :
>>> On the receive side I am using a home brew antenna based on a 36" "BBQ"
>>> grill with a 5 turn helix feed, connected directly to a model UEK-3000
>>> down converter (by SSB) , into my AOR AR-5000A3 receiver.
>>>
>>> The transmit side was with my Icom-910 into a 11 element yagi.
>>>
>>> Antenna: My old Kenpro 5400 rotator was controlled through the LVB
>>> interface using NOVA software on my laptop. I used the frequency utility
>>> in the NOVA s/w to calculate and display the doppler on the down link,
>>> which varied from +50 to -35 KHz on most passes!! The doppler really
>>> keeps you busy on S-band, as there is no CAT output (just display) on
>>> the NOVA software, and you have to crank in the doppler manually. NOVA
>>> tracking software is very powerful and user friendly, but lacks radio
>>> CAT output. I would like to someday find a software program with the
>>> same or comparable look and feel as NOVA, but with CAT rig control
>>> interface in addition to the standard rotator interface. (SATPC is ok
>>> but has the look and feel (GUI) of an old 1980s DOS program).
>>>
>>> Is there a good CAT program rig control that I can run in the background
>>> while running NOVA for ant control and display?
>>>
>>> Anyway, Thanks AMSAT. Lets do this again some day.
>>>
>>> 73' de KB5YZG
>>>
>>> Bob Felt
>>> 1403 5th Ave West (EM85)
>>> Hendersonville, NC 28739
>>>
>>> email - kb5yzg(AT)amsat.org
>>> _______________________________________________
>>> Sent via AMSAT-BB(AT)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
>>
>> _______________________________________________
>> Sent via AMSAT-BB(AT)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
>
------------------------------
Message: 8
Date: Thu, 21 Aug 2008 18:23:50 -0500
From: "Joe Westbrook" <k7zt(AT)suddenlink.net>
Subject: [amsat-bb] Re: AO-51 V/S Mode Ops, Some Observations
To: "Simon \(HB9DRV\)" <simon(AT)hb9drv.ch>, <amsat-bb(AT)amsat.org>
Message-ID: <005a01c903e4$f8368840$0702a8c0(AT)corp.global.level3.com>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Thanks Simon, I'll look forward to the revision. Enjoy House this evening, I
watch that program as well!
73's - Joe
----- Original Message -----
From: "Simon (HB9DRV)" <simon(AT)hb9drv.ch>
To: <amsat-bb(AT)amsat.org>
Sent: Thursday, August 21, 2008 2:07 PM
Subject: [amsat-bb] Re: AO-51 V/S Mode Ops, Some Observations
> We're probably looking at Saturday or Sunday for a technology preview.
>
> Currently I'm adding dual radio support - radio 1 used for RX, radio 2
> used
> for TX. For example 2 x FT-857 or whatever you have in the shack.
>
> Next week is 'add all rotators' week.
>
> This evening - two episodes of Dr. House on Swiss TV :-)
>
> Simon Brown, HB9DRV
> www.ham-radio-deluxe.com
>
> ----- Original Message -----
> From: "Alan P. Biddle" <APBIDDLE(AT)UNITED.NET>
>
>
>> The current version of HRD has a buggy Doppler correction, and mode-S is
>> so
>> extreme it will show up there. However, Simon is doing a full rewrite of
>> the satellite function, and it should be out for testing any day now.
>
> _______________________________________________
> Sent via AMSAT-BB(AT)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
------------------------------
Message: 9
Date: Fri, 22 Aug 2008 02:44:05 +0000
From: w7lrd(AT)comcast.net
Subject: [amsat-bb] FW: [PNWVHFS] FOR SALE IC820H
To: AMSAT-BB(AT)amsat.org (AMSAT-BB)
Message-ID:
<082220080244.27072.48AE27F50006DDF2000069C022120207840B9D04C999(AT)comc
ast.net>
Content-Type: text/plain
I am just fowarding this on the AMSAT-bb, just in case. If interested contact
the gent below.
73 Bob W7LRD
--
"if this were easy, everyone would be doing it"
-------------- Forwarded Message: --------------
From: "Merle Cox" <w7yoz(AT)easystreet.net>
To: PNWVHFS(AT)googlegroups.com
Subject: [PNWVHFS] FOR SALE IC820H
Date: Thu, 21 Aug 2008 21:19:19 +0000
I have for sale a 9.5 of 10 IC820H 144 & 432 MHz (plus out of band rcv & xmt)
multimode transceiver. $575 OBO plus shipping (if required). Merle W7YOZ
Phone 360 432 0701.
--~--~---------~--~----~------------~-------~--~----~
~The Voice of the Pacific NorthWest VHF Society~
You received this message because you are subscribed to the Google Groups
"PNWVHFS" group.
To post to this group, send email to PNWVHFS(AT)googlegroups.com
To unsubscribe from this group, send email to PNWVHFS-
unsubscribe(AT)googlegroups.com
For more options, visit this group at http://groups.google.com/group/PNWVHFS
-~----------~----~----~----~------~----~------~--~---
------------------------------
Message: 10
Date: Thu, 21 Aug 2008 20:02:32 -0700 (PDT)
From: WILLIAMS MICHAEL <k9qho6762(AT)sbcglobal.net>
Subject: [amsat-bb] DO-64 observations
To: amsat-bb(AT)amsat.org
Message-ID: <785386.67305.qm(AT)web82705.mail.mud.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1
These is my personal observations about DO-64.
The descending (morning) passes seem to be LHCP. My down link antenna is
fixed LCHP only, and I hear the descending passes really well and can access
DO-64 easily even at low elevations.
Above 45 degrees, DO-64 is loud and I can back off power < 5 watts CW. Up
link antenna is a 11 turn helix RHCP.
The ascending (evening) passes are very weak. Probably RHCP as I am fixed
LHCP. At this time, DO-64 is not in sunlight on the ascending (evening) passes
over the central U.S.
The beacon at 145.870 is easily heard. When you hear the beacon, you can put
a signal through the transponder.
435.556 MHz up puts you real close to the center of the 40KHz wide
transponder and 145.900 MHz down.
DO-64 does not have the booming signal as VO-52. I think I remember from the
video that the transponder output is 200 mW.
On the first half of the pass, the signals seem to be much stronger than the
second half.
It is a challenge and fun to work through this sat .
This no battery satellite is a good idea.
Many thanks,
Mike Williams
K9QHO
AMSAT 33589
------------------------------
Message: 11
Date: Thu, 21 Aug 2008 23:02:15 -0400
From: "Mr Jeffrey L Ross" <radiooperator(AT)comcast.net>
Subject: [amsat-bb] compass-1
To: "amsat" <amsat-bb(AT)amsat.org>
Message-ID: <005201c90403$7bcf3580$6401a8c0(AT)hamshackcomputer>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
hi folks, thought i would try for compass-1. Had a good 81 degree pass my
location just now and listened and got the last of a cw beacon as I think it
goes/xmits every 8 mins. So to get a beacon is just a matter of luck if it
beacons while over head.
sounded powerfull though, will be looking for it the next pass's.
kc8gkf
p.s. had to change freq from 437.275 to 437.405 for the packet. wish they
were on the same freq.
guess I have to decide what one i want to try for.
anyone know how they xmit us the pics? or if any pics have been downloaded
as of yet?
------------------------------
Message: 12
Date: Fri, 22 Aug 2008 06:03:23 +0200
From: "i8cvs" <domenico.i8cvs(AT)tin.it>
Subject: [amsat-bb] Re: Wanted, printable, scalable clockwise
protractor image
To: "Tyler J Doering" <tyler.doering(AT)gmail.com>, "'Doug Faunt N6TQS
+1-510-655-8604'" <faunt(AT)panix.com>, "AMSAT-BB" <amsat-
bb(AT)amsat.org>
Message-ID: <001d01c9040c$06995300$0201a8c0(AT)tin.it>
Content-Type: text/plain; charset="iso-8859-1"
Hy Tyler, KI4YLJ
I use a 0-360? protractor for the AZ and a 0-90? protractor for the EL
for my manual traking system used for several years in 432 MHz EME
and AO40
The moving needle in the center of the protractor is mounted on the
shaft of a Selsyn motor receiver wich is fitted in the control box while
the Selsyn motor transmitter is mechanically coupled to the moving shaft
of the antenna.
Only 5 wires are necessary to connect a Selsyn transmitter to a Selsyn
receiver.
Three wires are needed to connect in parallel S1-S2-S3 of both stators
and two wires are needed to connect in parallel R1 and R2 of both
rotors while in general a 115 volt AC 50 or 60 Hz depending on the
model is supplied to R1 and R2
Depending on the size and torque of Selsyn motors it is possible to
move a long needle for high accuracy as about 1/2 degrees as in my case
using a 15 cm long needle mounted over the shaft of a 2" Muirhead
Selsyn motors originally used to point marine guns on battle-ships
during the WWII
Using an integrated circuit AD2S80 from the Analog Device it is actually
possible to make the conversion Syncro to Digital showing the angular
position in digital form and get out as well a 0 to 5 volt DC to be used for
the automatic antenna traking with a computer and this is what I plan to do
as soon as possible.
In a separate email I will send to you some pics of my actual manual
control box showing the schematic diagram and the type of Selsyn
motors that I have used.
Selsyn motors of different type and different voltages are actually
available as new or as used at a really low cost on ebay.
73" de
i8CVS Domenico
----- Original Message -----
From: "Tyler J Doering" <tyler.doering(AT)gmail.com>
To: "'Doug Faunt N6TQS +1-510-655-8604'" <faunt(AT)panix.com>;
<amsat-bb(AT)amsat.org>
Sent: Tuesday, August 19, 2008 8:27 PM
Subject: [amsat-bb] Re: Wanted, printable,scalable clockwise protractor
image
> Doug:
>
> Here is a simple pdf 48x36 that I have used in the past to help track
LEO's.
>
> Linked here as well:
> http://www.cslab.uky.edu/~tjdoer2/drop/080719%20-%20Degree%20Marking.pdf
>
> Thanks
>
> Tyler, KI4YLJ
>
> -----Original Message-----
> From: amsat-bb-bounces(AT)amsat.org [mailto:amsat-bb-bounces(AT)amsat.org]
On
> Behalf Of Doug Faunt N6TQS +1-510-655-8604
> Sent: Tuesday, August 19, 2008 1:42 PM
> To: amsat-bb(AT)amsat.org
> Subject: [amsat-bb] Wanted, printable, scalable clockwise protractor image
>
> Hi all,
> I think it'd be easier for me to manually track LEO's if I had a image
like
> this one, but with the numbers clockwise. Any help?
>
> http://www.mathsisfun.com/geometry/images/degrees-360.gif
>
> 73, doug
------------------------------
Message: 13
Date: Fri, 22 Aug 2008 08:57:27 +0200
From: "Mike Rupprecht" <mail(AT)mike-rupprecht.de>
Subject: [amsat-bb] Re: compass-1
To: "'Mr Jeffrey L Ross'" <radiooperator(AT)comcast.net>, "'amsat'"
<amsat-bb(AT)amsat.org>
Message-ID: <000301c90424$57218c80$0564a580$(AT)de>
Content-Type: text/plain; charset="iso-8859-1"
Hi Jeff,
thank you for listening to COMPASS. Could you decode the beacon or did you
record it?
COMPASS is in emergency mode and the beacon is transmitting every 8..9
minutes if the voltage is higher than 2.8 volts. The RX/TX seems to work
with voltages down to 2.4 volt. This explains why COMPASS responds to
commands but no beacon sends.
If the batteries are charged and the voltage is higher than 3.7 volts (!) -
COMPASS will switch autonomous into NORMAL mode. Only in this mode the FM
transmitter (437.405MHz) is on and the satellite can send packets on
request.
To take a picture the following points must fulfilled:
- NORMAL mode
- ADCS active and in control mode - that means COMPASS is not tumbling and
stabilized,
camera is pointing to earth
- COMPASS must command to take a picture
- everyone :-) should listen to COMPASS and collect the received packets (
300 Kbyte data )
- request the missing packet frames
- compose the frames to an picture
But we are far away from this point. The first goal is - bring back COMPASS
into normal operation mode.
Thanks and 73,
Mike
DK3WN
-----Urspr?ngliche Nachricht-----
Von: amsat-bb-bounces(AT)amsat.org [mailto:amsat-bb-bounces(AT)amsat.org] Im
Auftrag von Mr Jeffrey L Ross
Gesendet: Freitag, 22. August 2008 05:02
An: amsat
Betreff: [amsat-bb] compass-1
hi folks, thought i would try for compass-1. Had a good 81 degree pass my
location just now and listened and got the last of a cw beacon as I think it
goes/xmits every 8 mins. So to get a beacon is just a matter of luck if it
beacons while over head.
sounded powerfull though, will be looking for it the next pass's.
kc8gkf
p.s. had to change freq from 437.275 to 437.405 for the packet. wish they
were on the same freq.
guess I have to decide what one i want to try for.
anyone know how they xmit us the pics? or if any pics have been downloaded
as of yet?
_______________________________________________
Sent via AMSAT-BB(AT)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
------------------------------
Message: 14
Date: Fri, 22 Aug 2008 01:38:20 -0600
From: Nate Duehr <nate(AT)natetech.com>
Subject: [amsat-bb] Re: LMR 400
To: AMSAT BB <amsat-bb(AT)amsat.org>
Message-ID: <C20B22D5-5BD1-4DCA-92F7-A40DEEB2EE67(AT)natetech.com>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
On Aug 19, 2008, at 7:09 PM, James - KB7TBT wrote:
> 400-Series Coaxial Bulk Cable- Available by the Foot or Reel
>
> http://www.hyperlinktech.com/productfamily.aspx?id=249
I recognize the CommScope brand name in this website, and know that
lots of commercial folks use their hardline... but the other
manufacturer I don't recognize.
"True" LMR-400 is only made by Times-Microwave. There are a lot of
"copy-cats" on the market now, but little engineering data on whether
or not it performs to rated specifications.
Has anyone on the list tested any of this "400-series" type cable from
either of these two manufacturers to see if it lives up to real
LMR-400 specs?
I hate to say it, but I've been burned enough times by the old adage,
"You get what you pay for" that I'm leery of these LMR-400 "series"
copies.
LMR-400 has also been traced to PIM (passive intermod) problems on
many commercial sites when used in feeding repeaters, due to the "foil
over braid" design, and many repeater owner/operators won't use it
anymore. (Every little "bump" in the braid touching the foil is
another tiny little junction where diode-behavior can create IM mixes.)
Still good specifications for simplex services like satellite, no
doubt -- but just mentioning that it does have some limitations/
downfalls in duplex service on FM repeaters.
--
Nate Duehr, WY0X
nate(AT)natetech.com
------------------------------
Message: 15
Date: Fri, 22 Aug 2008 10:19:43 +0200
From: "Mike Rupprecht" <mail(AT)mike-rupprecht.de>
Subject: [amsat-bb] COMPASS-1 beacon heard
To: "'amsat'" <amsat-bb(AT)amsat.org>
Message-ID: <000c01c9042f$d4f415f0$7edc41d0$(AT)de>
Content-Type: text/plain; charset="iso-8859-1"
Hi all,
I have one day off and tried to command COMPASS in full sunlight.
The first pass (for Europe) this morning was low, only 6?. All commands were
accepted and confirmed several time by COMPASS.
At 0801UTC the beacon came with 00 compass ff0660000000002100009800ff
It shows, that the heater was still on ? in spite of confirmed commands. I
will try the next pass (nearly 90?)?
73, Mike
DK3WN
------------------------------
Message: 16
Date: Fri, 22 Aug 2008 02:38:38 -0700 (PDT)
From: John Mock <kd6pag(AT)yahoo.com>
Subject: [amsat-bb] Back to mainland Scotland
To: amsat-bb(AT)amsat.org
Message-ID: <643721.99209.qm(AT)web34301.mail.mud.yahoo.com>
Content-Type: text/plain; charset=us-ascii
Thanks to all that i've worked, both in Europe and state-side. Not
traveling solo, it's been hard at times to be both available and have
a good horizon for trans-Altlantic passes. Half the time, no one has
been on! But they have been alot easier to work than those over Europe.
I'm experiencing lots of QRM soon after the bird goes overhead on
morning AO-51 passes and people calling CQ who can't hear the bird.
But on less busy passes, i'm making contacts and hope to talk to more
of you from mainland Scotland. Internet access has been sparse but you
can suggest a sked and i'll respond if i can. Hope to talk to more of
you, especially across the pond, from now until roughly September. 73's
and good luck!
-- KD6PAG
------------------------------
Message: 17
Date: Fri, 22 Aug 2008 12:00:19 +0200
From: "Mike Rupprecht" <mail(AT)mike-rupprecht.de>
Subject: [amsat-bb] Re: COMPASS-1 beacon heard
To: "'Mike Rupprecht'" <mail(AT)mike-rupprecht.de>, "'amsat'"
<amsat-bb(AT)amsat.org>
Message-ID: <001501c9043d$e2c2c060$a8484120$(AT)de>
Content-Type: text/plain; charset="iso-8859-1"
Hi all,
A replay of the previous pass! All commands sent and acknowledged at 0939
UTC.
Beacon received at 0943 UTC: 00 compass ff0740150600002100009000ff
Solar Cell Voltage 5.00 V
Solar Panel 6 Cur 43.92 mA
Solar Panel 2 Cur 0.00 mA
Solar Panel 3 Cur 37.65 mA
Solar Panel 4 Cur 131.76 mA
Solar Panel 5 Cur 401.57 mA
EPS Reset Counter 0
Power Level Critical Battery Capacity
Heater Active Battery Heater ON
Power Safe Counter 0
Emergency Mode Counter 0
Battery Voltage 2.82 V
Battery Current 0.00 mA
Battery Temperature -1 ?C
Heater still on - I think there is no internal communication between the
units (I2C bus down).
Mhh, I haven't got a clue.
73, Mike
DK3WN
-----Urspr?ngliche Nachricht-----
Von: amsat-bb-bounces(AT)amsat.org [mailto:amsat-bb-bounces(AT)amsat.org] Im
Auftrag von Mike Rupprecht
Gesendet: Freitag, 22. August 2008 10:20
An: 'amsat'
Betreff: [amsat-bb] COMPASS-1 beacon heard
Hi all,
I have one day off and tried to command COMPASS in full sunlight.
The first pass (for Europe) this morning was low, only 6?. All commands were
accepted and confirmed several time by COMPASS.
At 0801UTC the beacon came with 00 compass ff0660000000002100009800ff
It shows, that the heater was still on ? in spite of confirmed commands. I
will try the next pass (nearly 90?)?
73, Mike
DK3WN
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------------------------------
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End of AMSAT-BB Digest, Vol 3, Issue 427
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