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CX2SA > SATDIG 02.09.08 02:12l 753 Lines 25233 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Re: preamps (Edward Cole)
2. kg7p email? (W0DXZ(AT)aol.com)
3. Re: kg7p email? (Patrick STODDARD (WD9EWK/VA7EWK))
4. Re: Radio setups (James Duffey)
5. IC-910H question (W0DXZ(AT)aol.com)
6. Re: IC-910H question (Nigel Gunn G8IFF/W8IFF)
7. Frequencies for Phase 3E Express (RFI-EMI-GUY)
8. Re: Frequencies for Phase 3E Express (Nigel Gunn G8IFF/W8IFF)
9. Re: IC-910H question (George Henry)
10. Re: preamps (Luc Leblanc)
11. History in the making! (Alan P. Biddle)
12. AO-51 update (Andrew Glasbrenner)
13. AO-40 portable stations (Andrew Glasbrenner)
14. IM76QM portable activation EA4CYQ/p/qrp (Fernandez)
15. Re: AO-40 portable stations (Alan)
16. Re: AO-40 portable stations (Pedro A. Perez)
17. Is anyone using a discone antenna for AMSAT work?
(Mark Lunday, WD4ELG)
----------------------------------------------------------------------
Message: 1
Date: Sun, 31 Aug 2008 11:25:50 -0800
From: Edward Cole <kl7uw(AT)acsalaska.net>
Subject: [amsat-bb] Re: preamps
To: Michael Heim <kd0ar(AT)sbcglobal.net>
Cc: AMSAT-BB(AT)amsat.org
Message-ID: <200808311925.m7VJPpYg020573(AT)iris.acsalaska.net>
Content-Type: text/plain; charset="us-ascii"; format=flowed
At 08:59 AM 8/31/2008, you wrote:
>A recent post mentioned the need for a preamp. This reminded me of
>something I want to share with the group.
>
>Station here consists of an FT-817ND and an FT-857D. The 817 is
>pretty sensitive on UHF, but the 857 is a little lacking in comparison.
>
>I was looking for a preamp online that would help, especially with
>the 857. I went and ordered a Ramsey PR40. I figured for $15 I
>couldnt go wrong. Although its not a GaAs device, (its a bipolar),
>it works pretty well. I actually didnt want a GaAs because I was
>afraid of blowing the device anyway, being I'm running a homebrew
>"Arrow style" antenna on a fixed elevation mast, and the 144 MHz
>leakage getting into the preamp would probably blow the device the
>first time I keyed.
>
>I am not using any TR switching on the preamp. (I only work the FM
>birds at this time).
>
>After building the kit, I put it up, worked a pass on AO-27, then
>goofed and sent 432 TX energy up the line, blew the amp. I ordered
>replacement transistors from MCM for $.52 each!
>
>Although I cannot measure noise figure, it specs at 1dB, 15 dB
>gain. I know it makes a HUGE difference on my end. Satellites that
>were noisy before are now full quieting and armchair copy
>
>I have found this item a very cost effective solution. I wanted to
>share this experience with the group. I'm just pleased with the
>preamp and of course, receive no personal gain by recommending this product.
>
> Michael Heim
>ARS KD0AR
>_______________________________________________
Michael has discovered what many of us have been preaching for many
years. Preamps at the antenna makes a world of difference in what you hear.
But he also discovered how most preamps are blown. Its not from
leakage via the antenna but from transmitting on the coax going from
the radio to the preamp.
Solutions:
* Use coax relays to bypass around the preamp. (I am doing this
for 222 and 432 terrestrial antennas/preamps)
* Purchase a preamp designed for a transceiver (usually rated for
certain maximum power levels such as 25w or 160w, etc.).
* Modify the radio so the receiver has a separate antenna
connector. (I have this done on my FT-847)
* Use of protective devices that absorb transmit power (up to
50w, usually) and only reduce preamp gain a little bit.
So one should not be afraid to use Gasfet preamps. They are not
usually blown by signals entering the input side. However, If you
are in high lightning country you should provide for shorting the
antenna input to the preamp to avoid HV static discharge.
Always locate the preamp close to the antenna to avoid cable losses
in between the antenna and preamp that directly add to the noise
figure. Use low-loss coax in that jumper. Coax from the preamp
output to the radio may be low cost coax since the preamp gain will
usually overcome these losses.
Thanks for your experience, Michael.
*****************************************************
73, Ed - KL7UW BP40iq, 6m - 3cm
144-EME: FT-847, mgf-1801, 4x-xp20, 185w
http://www.kl7uw.com AK VHF-Up Group
NA Rep. for DUBUS: dubususa(AT)hotmail.com
*****************************************************
------------------------------
Message: 2
Date: Sun, 31 Aug 2008 15:38:51 EDT
From: W0DXZ(AT)aol.com
Subject: [amsat-bb] kg7p email?
To: amsat-bb(AT)amsat.org
Message-ID: <d30.3ab8c089.35ec4d4b(AT)aol.com>
Content-Type: text/plain; charset="US-ASCII"
Does KG7P have an email address? Worked him 2x today on SO-52, good signal
into AZ, also heard Patrick, WD9EWK, strong signal. I can get into the
sat, and can hear it, now working on coordingating tx and rx.
Bob W0DXZ DM33
**************It's only a deal if it's where you want to go. Find your travel
deal here.
(http://information.travel.aol.com/deals?ncid=aoltrv00050000000047)
------------------------------
Message: 3
Date: Sun, 31 Aug 2008 12:56:46 -0700 (PDT)
From: "Patrick STODDARD \(WD9EWK/VA7EWK\)" <amsat-bb(AT)wd9ewk.net>
Subject: [amsat-bb] Re: kg7p email?
To: amsat-bb(AT)amsat.org
Message-ID: <734008.30219.qm(AT)web56106.mail.re3.yahoo.com>
Content-Type: text/plain; charset=us-ascii
Hi Bob!
> Does KG7P have an email address? Worked him 2x today on
> SO-52, good
> signal
> into AZ, also heard Patrick, WD9EWK, strong signal. I
Thanks for the signal report! That was a 75-degree VO-52 pass
out here in DM44ha, and at times my little FT-817ND receive
radio was up to S-7 and S-8 as the satellite went by. I'm not
making lots of SSB satellite QSOs, but I am making QSOs.
Little by little, I am improving my skills in dealing with
these satellites. Still fun!
I did not see an e-mail address for KG7P in a quick search.
Not a problem here - Stan said he was going to QSL, and I
will certainly send my card his way for another VO-52 QSO
in my log.
> can get into the
> sat, and can hear it, now working on coordingating tx and rx.
Are you going with computer control, or just manually doing
that initially? Have you tried AO-7 and Delfi-C3 (DO-64), or
just VO-52 so far? I don't remember if you have preamps in
your setup - do you?
Good luck, and hope to work you on the SSB birds soon. You
can see my portable SSB satellite setup in 2 weeks, at the
upcoming ARRL Southwestern Division convention (12-14
September). I'll be on VO-52 as well as the FM birds doing
demonstrations during the convention.
73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
------------------------------
Message: 4
Date: Sun, 31 Aug 2008 15:33:18 -0600
From: James Duffey <JamesDuffey(AT)comcast.net>
Subject: [amsat-bb] Re: Radio setups
To: amsat-bb(AT)wd9ewk.net
Cc: amsat-bb(AT)amsat.org
Message-ID: <5DC2775E-E537-4B05-90C9-40D14C4A9642(AT)comcast.net>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
On Aug 31, 2008, at 12:44 PM, Patrick STODDARD (WD9EWK/VA7EWK) wrote:
> I can, and regularly do, change my transmit
> frequency while transmitting on these 817s. Very nice! I don't
> know if that is possible with computer control, but the "big" knob
> on the front will do that.
One of the nice features of the old FT-780R is the switch on the back
of the rig that allows one to activate a "SAT" mode which allows one
to switch between having the transmitter changing frequency during
transmit and having it locked during transmit. This is a nice feature;
one gets the best of both worlds. I would think this would be easy to
implement in software with today's modern radios. - Duffey
--
KK6MC
James Duffey
Cedar Crest NM
------------------------------
Message: 5
Date: Sun, 31 Aug 2008 19:01:54 EDT
From: W0DXZ(AT)aol.com
Subject: [amsat-bb] IC-910H question
To: amsat-bb(AT)amsat.org
Message-ID: <c3d.3ea6523b.35ec7ce2(AT)aol.com>
Content-Type: text/plain; charset="US-ASCII"
went to plug in my CW paddle to the back of my IC-910H,,, the manual shows
a standard 1/4 inch phono plug,,, the back of my radio has something else...
I havent turned it all the way around to see what it is, have to disconnect
lots of wires,,,but it isn't a 1/4 inch plug...
anyone else notice this?
Bob DM33
**************It's only a deal if it's where you want to go. Find your travel
deal here.
(http://information.travel.aol.com/deals?ncid=aoltrv00050000000047)
------------------------------
Message: 6
Date: Sun, 31 Aug 2008 23:26:58 +0000
From: Nigel Gunn G8IFF/W8IFF <nigel(AT)ngunn.net>
Subject: [amsat-bb] Re: IC-910H question
To: amsat-bb(AT)amsat.org
Message-ID: <48BB28C2.1080608(AT)ngunn.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Nope. Never seen the back of your radio.
W0DXZ(AT)aol.com wrote:
> went to plug in my CW paddle to the back of my IC-910H,,, the manual
shows
> a standard 1/4 inch phono plug,,, the back of my radio has something
else...
> I havent turned it all the way around to see what it is, have to
disconnect
> lots of wires,,,but it isn't a 1/4 inch plug...
> anyone else notice this?
> Bob DM33
------------------------------
Message: 7
Date: Sun, 31 Aug 2008 20:20:20 -0400
From: RFI-EMI-GUY <Rhyolite(AT)NETTALLY.COM>
Subject: [amsat-bb] Frequencies for Phase 3E Express
To: amsat-bb(AT)amsat.org
Message-ID: <48BB3544.50207(AT)NETTALLY.COM>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Kudo's to Emily for that fine document!
--
Joe Leikhim K4SAT
"The RFI-EMI-GUY"?
"Treason doth never prosper: what's the reason?
For if it prosper, none dare call it treason."
"Follow The Money" ;-P
------------------------------
Message: 8
Date: Mon, 01 Sep 2008 00:37:23 +0000
From: Nigel Gunn G8IFF/W8IFF <nigel(AT)ngunn.net>
Subject: [amsat-bb] Re: Frequencies for Phase 3E Express
To: Rhyolite(AT)NETTALLY.COM
Cc: amsat-bb(AT)amsat.org
Message-ID: <48BB3943.4030106(AT)ngunn.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Which fine document?
RFI-EMI-GUY wrote:
> Kudo's to Emily for that fine document!
>
------------------------------
Message: 9
Date: Sun, 31 Aug 2008 20:00:57 -0500
From: "George Henry" <ka3hsw(AT)att.net>
Subject: [amsat-bb] Re: IC-910H question
To: <W0DXZ(AT)aol.com>, <amsat-bb(AT)amsat.org>
Message-ID: <001d01c90bce$322a95f0$0601a8c0(AT)parents>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
It should be a standard stereo 1/8" jack (it is on my 910H)... for a
paddle, tip is dot, ring is dash, and shell is common. You have to set
"paddle" from the SSB/CW "set" mode, and you can choose normal or reverse
polarity, or "bug" mode.
73,
George, KA3HSW
----- Original Message -----
From: <W0DXZ(AT)aol.com>
To: <amsat-bb(AT)amsat.org>
Sent: Sunday, August 31, 2008 6:01 PM
Subject: [amsat-bb] IC-910H question
> went to plug in my CW paddle to the back of my IC-910H,,, the manual
> shows
> a standard 1/4 inch phono plug,,, the back of my radio has something
> else...
> I havent turned it all the way around to see what it is, have to
> disconnect
> lots of wires,,,but it isn't a 1/4 inch plug...
> anyone else notice this?
> Bob DM33
>
------------------------------
Message: 10
Date: Sun, 31 Aug 2008 23:24:52 -0400
From: Luc Leblanc <lucleblanc6(AT)videotron.ca>
Subject: [amsat-bb] Re: preamps
To: amsat-bb(AT)AMSAT.Org
Message-ID: <48BB2844.1899.1EBC976(AT)lucleblanc6.videotron.ca>
Content-Type: text/plain; charset=US-ASCII
On 31 Aug 2008 at 11:25, Edward Cole wrote:
> At 08:59 AM 8/31/2008, you wrote:
>
>
> >A recent post mentioned the need for a preamp. This reminded me of
> >something I want to share with the group.
> >After building the kit, I put it up, worked a pass on AO-27, then
> >goofed and sent 432 TX energy up the line, blew the amp. I ordered
> > Michael Heim
> >ARS KD0AR
> >_______________________________________________
>
> Michael has discovered what many of us have been preaching for many
> years. Preamps at the antenna makes a world of difference in what you hear.
>
> But he also discovered how most preamps are blown. Its not from
> leakage via the antenna but from transmitting on the coax going from
> the radio to the preamp.
>
> Solutions:
> * Use coax relays to bypass around the preamp. (I am doing this
> for 222 and 432 terrestrial antennas/preamps)
> * Purchase a preamp designed for a transceiver (usually rated for
> certain maximum power levels such as 25w or 160w, etc.).
> * Modify the radio so the receiver has a separate antenna
> connector. (I have this done on my FT-847)
> * Use of protective devices that absorb transmit power (up to
> 50w, usually) and only reduce preamp gain a little bit.
> So one should not be afraid to use Gasfet preamps. They are not
> usually blown by signals entering the input side. However, If you
> are in high lightning country you should provide for shorting the
> antenna input to the preamp to avoid HV static discharge.
>
>
>
I was a non believer too but preamp for VHF UHF is mandatory If you don't want
to use the sat 3 minutes only at TCA or calling CQ in the
void. When someone like you is using as much power answer you it is already
too late the pass band is close as all the other user also
cranked up their power.
BLOWN PREAMP
Who never blow his preamp please raise your hand? I blow 3 repair 1 2 to go.
But as the famous "transistor" is always hard to get! on
my icom i order 6 just in case..Even if they are protected i managed to use an
external voltage bias source who was always on when
switching between bands. I ended up with the bad combination plus a mike who
fell down just over my straight key and POOF not exactly it's
insidious when you switch back to normal you don't hear the noise increased
then you say !!!! (censored)
Here is below the solution i found. I know they are not the best for signal to
noise ratio but as the run for the curliest girl on the
dance floor syndrome the next one can also dance.
http://cgi.ebay.com/New-Icom-AG-25-Pre-
amplifier_W0QQitemZ380058676218QQihZ025QQcategoryZ40059QQssPageNameZWDVWQQrdZ1
QQcmdZViewItem
http://cgi.ebay.com/New-Icom-AG-35-Pre-amp-IC-910H-IC-970-IC-820-IC-
821_W0QQitemZ380058336577QQihZ025QQcategoryZ4674QQssPageNameZWDVWQQrdZ1QQcmdZV
iewItem
Happy labor day week end. I will try to be on the sat tomorrow if my wife
gardening crisis slow down a bit...50% off on trees and plants
over here. 6 uprooted 1 planted 5 to go BUT could be next year "finger
crossed" she return back tomorrow!!!
"-"
Luc Leblanc VE2DWE
Skype VE2DWE
www.qsl.net/ve2dwe
WAC BASIC CW PHONE SATELLITE
------------------------------
Message: 11
Date: Mon, 1 Sep 2008 08:02:14 -0500
From: "Alan P. Biddle" <APBIDDLE(AT)UNITED.NET>
Subject: [amsat-bb] History in the making!
To: "AMSAT-BB" <amsat-bb(AT)amsat.org>
Message-ID: <3C18C9DE15F94614AFD95928F1DABB26(AT)AlanPortable>
Content-Type: text/plain; charset="us-ascii"
Congratulations on surviving the first calendar month since June 1913 which
had no reportable sunspots. And counting. Of course, we satellite
operators don't need no stinking sunspots, but have a word of sympathy for
your friends who work only HF.
Alan
WA4SCA
------------------------------
Message: 12
Date: Mon, 1 Sep 2008 10:07:45 -0400
From: "Andrew Glasbrenner" <glasbrenner(AT)mindspring.com>
Subject: [amsat-bb] AO-51 update
To: <amsat-bb(AT)AMSAT.Org>
Cc: ao51-modes(AT)AMSAT.Org
Message-ID: <C944BB63F12F4C00BD2C60CB15398ECB(AT)Andrewlaptop>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
AO-51 will be unavailable for a few days beginning Tuesday morning EDT. The
command team needs to reload part of the spacecraft operating software
beginning at that time. The repeater should be back up and running within 48
hours, with the BBS following soon.
Due to the reload and the recent return to continuous illumination, we
haven't finalized a schedule for September. There have been a few special
requests, including the return of AMSAT College Night, and requests for some
L/S time. As soon as the second reload is complete, we'll have the schedule
up. Sorry for any inconvenience.
73, Drew KO4MA
AMSAT-NA VP Operations
------------------------------
Message: 13
Date: Mon, 1 Sep 2008 10:12:53 -0400
From: "Andrew Glasbrenner" <glasbrenner(AT)mindspring.com>
Subject: [amsat-bb] AO-40 portable stations
To: <amsat-bb(AT)AMSAT.Org>
Message-ID: <4C8CC8FE350444658C1F7B3E70FFE7B7(AT)Andrewlaptop>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
I'm trying to collect some data on the typical successful AO-40
portable-type station. What worked and what didn't work for a portable,
throw it in a suitcase type setup, or CC&R evading driveway or backyard
setups, either U/S or L/S. If you have any photos and/or descriptions of
your setup, please forward them direct to me at ko4ma(AT)amsat.org , or point
me to a link if you have them on the web. Thanks in advance!
73,
Drew KO4MA
------------------------------
Message: 14
Date: Mon, 1 Sep 2008 16:12:12 +0200
From: Fernandez Monta?a, Juan Antonio <jafernandez(AT)iberdrola.es>
Subject: [amsat-bb] IM76QM portable activation EA4CYQ/p/qrp
To: <amsat-bb(AT)amsat.org>
Message-ID:
<9DB85308D177F744876F4D5DDBA94DB112C8CB(AT)CLFEXBUZ12A.corp.iberdrola.lo
cal>
Content-Type: text/plain; charset="iso-8859-1"
Hi all,
I will spend a fortnight at IM76QM in the west passes over Spain in the AO-51
and AO-27 sats.
My setup is an IOio antenna and a THD7 HT, I have just successfully worked
several passes. I have yesterday worked to ea8bwy/p from Canary Island, He was
working with the same setup, and IOio and 5 Watts. The AO51 let us an
impressive contact.
Juan Antonio
EA4CYQ
73s
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------------------------------
Message: 15
Date: Mon, 1 Sep 2008 12:08:31 -0500
From: "Alan" <ve4yz(AT)mts.net>
Subject: [amsat-bb] Re: AO-40 portable stations
To: "'Andrew Glasbrenner'" <glasbrenner(AT)mindspring.com>,
<amsat-bb(AT)amsat.org>
Message-ID: <E125BDF913FE4758AF3674002C214D61(AT)athlon>
Content-Type: text/plain; charset="us-ascii"
A comment; Google will often dig up some good stuff, but, because the way
some amateurs title their personal web pages and use descriptive text, and
googlers select search phrases, not even Google can get all the neat stuff.
I'm sure some really fine setups don't even get published to the web.
If AO-51 will be running in L/S or U/S mode more often during its full sun
period, perhaps some of the replies to Drew could be copied to this list for
everyone to tweak their systems.
Once-upon-a-time, AO-51 had experimenter's Wednesday when those who were
building their own 2.4 and 1.2 patches, helix, etc had an opportunity,
within the next week or so, to test their construction skills. I miss that,
but, with the second radio on AO-51 running less conventional modes on a
regular basis, we again have that opportunity. For me, that means I might
be able to continue tweaking my setup and install a more permanent version
on the roof before the snow flies.
My 2.4GHz Image Dumpster:
http://picasaweb.google.com/ve4yz.alan/24Ghz
73, Alan VE4YZ
EN19kw
AMSAT LM 2352
-----Original Message-----
From: amsat-bb-bounces(AT)amsat.org [mailto:amsat-bb-bounces(AT)amsat.org] On
Behalf Of Andrew Glasbrenner
Sent: September 1, 2008 9:13 AM
To: amsat-bb(AT)amsat.org
Subject: [amsat-bb] AO-40 portable stations
I'm trying to collect some data on the typical successful AO-40
portable-type station. What worked and what didn't work for a portable,
throw it in a suitcase type setup, or CC&R evading driveway or backyard
setups, either U/S or L/S. If you have any photos and/or descriptions of
your setup, please forward them direct to me at ko4ma(AT)amsat.org , or point
me to a link if you have them on the web. Thanks in advance!
73,
Drew KO4MA
_______________________________________________
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: 16
Date: Mon, 1 Sep 2008 19:38:14 +0200
From: "Pedro A. Perez" <eb4dka(AT)teleline.es>
Subject: [amsat-bb] Re: AO-40 portable stations
To: <amsat-bb(AT)amsat.org>
Message-ID: <003601c90c59$83a2b170$de00a8c0(AT)pegasus>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hi Drew, here is my mobile setup for AO-40 mode U/S. I?ve worked lot of
stations using this little gear:
UPLINK: Kenwood TM-455 with my comet SBB-5 dual band mobile antenna (fixed
on the roof of my car).
DOWNLINK: Kenwood TH-F7E HT with a pair of earbuds + Wimo PA-13R-20 Flat
Panel Antenna (33cm x 33cm) with a DB6NT converter.
Images:
http://eb4dka.laserenadigital.com/Imagenes/EB4DKA_AO40_MOBILE.jpg
http://eb4dka.laserenadigital.com/Imagenes/EB4DKA_AO40_MOBILE2.jpg
And this is my RX-only portable station for AO-40 mode S:
http://eb4dka.laserenadigital.com/Imagenes/EB4DKA_AO40_RX.jpg
Best 73 from Spain,
Pedro EB4DKA
http://eb4dka.laserenadigital.com
----- Original Message -----
From: "Andrew Glasbrenner" <glasbrenner(AT)mindspring.com>
To: <amsat-bb(AT)amsat.org>
Sent: Monday, September 01, 2008 4:12 PM
Subject: [amsat-bb] AO-40 portable stations
> I'm trying to collect some data on the typical successful AO-40
> portable-type station. What worked and what didn't work for a portable,
> throw it in a suitcase type setup, or CC&R evading driveway or backyard
> setups, either U/S or L/S. If you have any photos and/or descriptions of
> your setup, please forward them direct to me at ko4ma(AT)amsat.org , or
point
> me to a link if you have them on the web. Thanks in advance!
>
> 73,
> Drew KO4MA
>
> _______________________________________________
> Sent via AMSAT-BB(AT)amsat.org. Opinions expressed are those of the author.
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------------------------------
Message: 17
Date: Mon, 1 Sep 2008 13:47:49 -0400
From: "Mark Lunday, WD4ELG" <mlunday(AT)nc.rr.com>
Subject: [amsat-bb] Is anyone using a discone antenna for AMSAT work?
To: <amsat-bb(AT)amsat.org>
Message-ID: <000001c90c5a$d9c69570$8d53c050$(AT)rr.com>
Content-Type: text/plain; charset="us-ascii"
Looking at the DS3000A from AOR USA. Wondering if it isa good
backup/permanent installation versus the portable of handheld yagis like the
Arrow.
Mark Lunday
WD4ELG
wd4elg(AT)arrl.net
http://wd4elg.net
------------------------------
_______________________________________________
Sent via amsat-bb(AT)amsat.org. 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 3, Issue 442
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