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CX2SA > SATDIG 18.02.11 22:07l 396 Lines 12607 Bytes #999 (0) @ WW
BID : AMSATBB6105
Read: GUEST
Subj: AMSAT-BB-digest V6 105
Path: IZ3LSV<IK2XDE<ON4HU<CX2ACB<LU7DBL<CX2SA
Sent: 110218/2004Z @:CX2SA.LAV.URY.SA #:53506 [Minas] FBB7.00e $:AMSATBB6105
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: AO-51 may have crashed... (GW1FKY@xxx.xxxx
2. AO-51 back on (Andrew Glasbrenner)
3. Florida AMSAT Net 18Feb 0030 UTC (John Papay)
4. Re: Yaesu 847 vs. Icom 910 (Phil)
5. Re: Yaesu 847 vs. Icom 910 (Jim Sanford)
6. Using Predict with a dynamic qth file (Bobby Lacey)
7. QST Article on ARISSat-1 Available (Clint Bradford)
8. Yaesu 847 power supply -linear vs. switching (zach hillerson)
9. Re: Yaesu 847 power supply -linear vs. switching
(Nigel Gunn G8IFF/W8IFF)
10. News regarding HO-68? (PE0SAT)
11. Linear vs. switching and HV DC (Bob Bruninga)
----------------------------------------------------------------------
Message: 1
Date: Thu, 17 Feb 2011 15:13:52 -0500 (EST)
From: GW1FKY@xxx.xxx
Subject: [amsat-bb] Re: AO-51 may have crashed...
To: glasbrenner@xxxxxxxxxx.xxxx amsat-bb@xxxxx.xxx
Message-ID: <25cab.2869c6d7.3a8edb80@xxx.xxx>
Content-Type: text/plain; charset="US-ASCII"
Hi Drew,
Confirms my fears as I did not hear any activity over here in UK (Wales)
on the high elevation pass between
1555 -1610 hrs GMT.
Trust that it is not related to the "Solar Flare " that has been forecast
to disrupt communication etc.
Good Luck.
Ken Eaton
GW1FKY
Amsat -UK
Amsat NA
------------------------------
Message: 2
Date: Thu, 17 Feb 2011 16:06:55 -0500 (GMT-05:00)
From: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
Subject: [amsat-bb] AO-51 back on
To: amsat-bb <amsat-bb@xxxxx.xxx>
Message-ID:
<13785156.1297976815743.JavaMail.root@xxxxxxxxxxxxx.xxx.xx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Luckily, it was a simple issue. Please post your reports to oscar.dcarr.org
through the weekend, it really helps the command team.
73, Drew KO4MA
------------------------------
Message: 3
Date: Thu, 17 Feb 2011 16:33:05 -0500
From: John Papay <john@xxxxxx.xxx>
Subject: [amsat-bb] Florida AMSAT Net 18Feb 0030 UTC
To: amsat-bb@xxxxx.xxx
Message-ID: <355363.35041.qm@xxxxxxx.xxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
The Florida AMSAT net is held every Thursday
evening at 7:30pm Eastern Time (18Feb 0030z).
Many Florida repeaters are connected together
for this net but others are welcome to join
by using the AMSAT Echolink Conference Node.
Mike N4HHA is usually the moderator. Bring
your questions and news items to share.
73,
John K8YSE/4
------------------------------
Message: 4
Date: Wed, 16 Feb 2011 15:46:20 +1000
From: Phil <phillor@xxxxxxx.xxx>
Subject: [amsat-bb] Re: Yaesu 847 vs. Icom 910
To: amsat-bb@xxxxx.xxx
Message-ID: <201102161546.20404.phillor@xxxxxxx.xxx>
Content-Type: Text/Plain; charset="iso-8859-1"
On Tue, 15 Feb 2011 12:00:41 pm zach hillerson wrote:
> I am finally in the market for a base station radio for satellites. I
> should mention that I am also planning to install a wire dipole in the
> backyard for HF work, but convenience shouldn't be the reason to buy/not
> to buy a radio.....
>
> It seems that the Icom 910 and Yaesu 847 are the two main transceivers in
> base use for satellites. I know some folks are using the Kenwood TS2000,
> bu i t I understand thatit has a "birdie" that makes operation on a couple
> FM satellites challenging. I am hoping to work both the linear and fm
> birds with this transceiver.
>
> Is there a BB favorite? Have I just opened up a bad can of worms? I just
> want to make sure that I am purchasing the proper parts the first time....
>
Hello Zach,
I've owned an FT-847 for the past eleven years and although it has served me
well (mostly satellite use but some HF operation as well) it has several
annoying birdies which are most noticeable the 144 MHz band. One particularly
annoying S7 birdie appears around 145.9 MHz which makes communication via
VO-52 difficult at times.
Other that that it has been a very reliable radio.
--
Regards,
Phil
------------------------------
Message: 5
Date: Thu, 17 Feb 2011 19:24:14 -0500
From: Jim Sanford <wb4gcs@xxxxxx.xxx>
Subject: [amsat-bb] Re: Yaesu 847 vs. Icom 910
To: Phil <phillor@xxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <4D5DBC2E.9040503@xxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I have a 910, a friend has an 847. We typically use both at Field Day.
I think the 910 is a better satellite radio.
Good luck!
73,
Jim
wb4gcs@xxxxx.xxx
On 2/16/2011 12:46 AM, Phil wrote:
> On Tue, 15 Feb 2011 12:00:41 pm zach hillerson wrote:
>> I am finally in the market for a base station radio for satellites. I
>> should mention that I am also planning to install a wire dipole in the
>> backyard for HF work, but convenience shouldn't be the reason to buy/not
>> to buy a radio.....
>>
>> It seems that the Icom 910 and Yaesu 847 are the two main transceivers in
>> base use for satellites. I know some folks are using the Kenwood TS2000,
>> bu i t I understand thatit has a "birdie" that makes operation on a couple
>> FM satellites challenging. I am hoping to work both the linear and fm
>> birds with this transceiver.
>>
>> Is there a BB favorite? Have I just opened up a bad can of worms? I just
>> want to make sure that I am purchasing the proper parts the first time....
>>
> Hello Zach,
>
> I've owned an FT-847 for the past eleven years and although it has served me
> well (mostly satellite use but some HF operation as well) it has several
> annoying birdies which are most noticeable the 144 MHz band. One
particularly
> annoying S7 birdie appears around 145.9 MHz which makes communication via
> VO-52 difficult at times.
>
> Other that that it has been a very reliable radio.
>
------------------------------
Message: 6
Date: Fri, 18 Feb 2011 12:27:43 -0500
From: Bobby Lacey <amsat@xxxxxxxxxxx.xxx>
Subject: [amsat-bb] Using Predict with a dynamic qth file
To: amsat-bb@xxxxx.xxx
Message-ID:
<AANLkTikBC5OyUz9DOX8vM4LUWJHn_gc4bokLZtw5H=Xy@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hi,
Is it possible to dynamically change predict's qth file from a socket
connection? Looking to develop a small web app that gives updates on pass
times depending on your current geolocation.
73
Bobby KF4GTA
------------------------------
Message: 7
Date: Fri, 18 Feb 2011 10:16:09 -0800
From: Clint Bradford <clintbradford@xxx.xxx>
Subject: [amsat-bb] QST Article on ARISSat-1 Available
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Message-ID: <5FAB6AC0-7CF6-4607-8FA6-F6A10278E50C@xxx.xxx>
Content-Type: text/plain; CHARSET=US-ASCII
David Jordan AA4KN's excellent article on working ARISSat-1 that was
published in the February, 2011 issue of QST magazine is available for
download to all.
http://tinyurl.com/work-arissat1
It is a 1.1MB .pdf document.
Clint Bradford, K6LCS
(Permission received from the ARRL to publish.)
------------------------------
Message: 8
Date: Fri, 18 Feb 2011 10:44:03 -0800 (PST)
From: zach hillerson <qstick333@xxxxx.xxx>
Subject: [amsat-bb] Yaesu 847 power supply -linear vs. switching
To: amsat-bb@xxxxx.xxx
Message-ID: <117372.56707.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
I purchased a Yaesu 847 for both satellite and HF work.? Since this is my
1st base-style transceiver I am now in need of a power supply.? I was
originally considering the Astron RS35M and am curious if linear or?
switching is the proper choice?? Is there a Amsat BB favorite between
switching and linear??
Thanks for any help!
Zach
N4ERZ
------------------------------
Message: 9
Date: Fri, 18 Feb 2011 18:53:41 +0000
From: Nigel Gunn G8IFF/W8IFF <nigel@xxxxx.xxx>
Subject: [amsat-bb] Re: Yaesu 847 power supply -linear vs. switching
To: zach hillerson <qstick333@xxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <4D5EC035.1040809@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
My preference is for big linear supplies but perhaps I'm just an old fogey
that prefers traditional design.
On 18-Feb-11 18:44, zach hillerson wrote:
> I purchased a Yaesu 847 for both satellite and HF work. Since this is my
1st base-style transceiver I am now in need of a power supply. I was
originally considering the Astron RS35M and am curious if linear or
switching is the proper choice? Is there a Amsat BB favorite between
switching and linear?
>
> Thanks for any help!
>
> Zach
> N4ERZ
>
>
>
>
>
> _______________________________________________
> 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
>
--
Nigel A. Gunn, 1865 El Camino Drive, Xenia, OH 45385-1115, USA. tel +1 937
825 5032
Amateur Radio G8IFF W8IFF (was KC8NHF 9H3GN), e-mail nigel@xxxxx.xxx
www http://www.ngunn.net
Member of ARRL, GQRP #11396, QRPARCI #11644, SOC #548, Flying Pigs QRP
Club International #385,
Dayton ARA #2128, AMSAT-NA LM-1691, AMSAT-UK 0182, MKARS, ALC,
GCARES, XWARN, EAA382.
------------------------------
Message: 10
Date: Fri, 18 Feb 2011 20:45:23 +0100
From: "PE0SAT" <pe0sat@xxxxx.xx>
Subject: [amsat-bb] News regarding HO-68?
To: amsat-bb@xxxxx.xxx
Message-ID: <20110218194523.EC6C878001@xx.xxxxx.xx>
Content-Type: text/plain;charset=iso-8859-1
Hi,
Thanks for reading this message. Is there any news regarding HO-68?
Or can somebody give us a link where we can find this information?
73 Jan - PE0SAT
--
With regards PE0SAT
Internet web-page http://www.ham.vgnet.nl/
------------------------------
Message: 11
Date: Fri, 18 Feb 2011 14:54:43 -0500
From: "Bob Bruninga" <bruninga@xxxx.xxx>
Subject: [amsat-bb] Linear vs. switching and HV DC
To: "'Nigel Gunn G8IFF/W8IFF'" <nigel@xxxxx.xxx>, "'zach hillerson'"
<qstick333@xxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <01df01cbcfa5$af7fe8a0$0e7fb9e0$@xxx>
Content-Type: text/plain; charset="us-ascii"
> Is there a Amsat BB favorite between switching and linear [power
supplies]?
I won't speak to noise, which is the only potential issue with switching
power supplies, but other than that, I am writing an article for QST that
points out how the world of power and emergency power has changed
drastically over the last decades. Entirely due to switching power supplies
and regulators:
PROS:
1) A 90% reduction in size and weight
2) Laptop supplies that can supply 12v at 5 to 10 amps
3) Universal inputs 115V to 240V AC
4) * also run on 150 to 330 VDC
5) Hybrids and Electric Vehicles have Kilowatts of 150 to 330 VDC available
6) Home grid-tie solar has Kilowatts of high voltage DC available
7) 12VDC to 120VAC inverters are now sine and modified sine at 90%+
efficiency
8) * These internally run on 200 VDC or so. Easy to run great distances on
small wire if you run them directly on HV DC derived from your Hybrid or
Solar.
CONS: with today's litigious society and general ignorance (compared to the
vacuum tube days when even cub-scouts built 2 tube radios with High
Voltage), it is doubtful that QST will publish the article. They have
rejected it before, but I keep whittling away at the details.
Bottom line, is that high efficiency high voltage DC is everywhere and
because everything runs on switching power supplies that run internally on
HV DC and regulators that accept a wide range of input, then HV DC could be
the new universal power source.
Problem is, Hybrid and EV MFR's are not going to provide access to HV DC
willingly due to safety an liability issues. Same for Solar installers....
Same for QST.
But you can get some of what I am writing about on this page:
http://aprs.org/FD-Prius-Power.html
http://aprs.org/alternative-energy.html
For example, buried in a Camry Hybrid is a nice compact stand-alone 14 volt
100 AMP DC/DC supply. Input can be 200 to 350 volts DC (which you can get
from 120V or 240VAC with just some diodes).. Problem is, it is bolted to
the $1000 salvage battery and the salvage guys won't sell it separately.
The Prius 100amp 14v supply is integrated into the huge drivetrain inverter
and inseparable from that $3000 unit (salvage cost).
As we electrify transportation and anyone with good sun goes solar, HV DC
will be something Hams will be getting used to again.
Bob, Wb4APR
------------------------------
_______________________________________________
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 6, Issue 105
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