OpenBCM V1.08-5-g2f4a (Linux)

Packet Radio Mailbox

IZ3LSV

[San Dona' di P. JN]

 Login: GUEST





  
CX2SA  > SATDIG   20.04.08 20:55l 787 Lines 27093 Bytes #999 (0) @ WW
BID : 62025-CX2SA
Read: GUEST
Subj: AMSAT-BB-digest V3 189
Path: IZ3LSV<IQ0LT<IK2XDE<DB0RES<ON0AR<I0TVL<CX2SA
Sent: 080420/1943Z @:CX2SA.LAV.URY.SA #:62025 [Minas] FBB7.00e $:62025-CX2SA
From: CX2SA@CX2SA.LAV.URY.SA
To  : SATDIG@WW


Today's Topics:

1. Re: XE83IARU (Patrick STODDARD (WD9EWK/VA7EWK))
2.  AO-16 (AT)2230z (Garie Halstead K8KFJ)
3. Re: [aprssig] APRS and the OLPC (Paul Kronenwetter)
4.  ANS-111  AMSAT Weekly Bulletins (Lee McLamb)
5. Re: Any feedback on Mirage KP1-440 Preamp? (Michael Pfeuffer)
6. Re: AO-16 (AT)2230z (Henk, PA3GUO)
7. Re: Any feedback on Mirage KP1-440 Preamp? (Edward Cole)
8.  software (Nick Pugh)


----------------------------------------------------------------------

Message: 1
Date: Sat, 19 Apr 2008 12:15:50 -0700
From: "Patrick STODDARD (WD9EWK/VA7EWK)" <amsat-bb(AT)wd9ewk.net>
Subject: [amsat-bb] Re: XE83IARU
To: amsat-bb(AT)amsat.org
Message-ID:
	<2e18ad3e0804191215s7adb34c7l501a0968e95d553c(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

Hi!

>       > I just worked XE83IARU- special station and callsign- on VO52
>
>   QSL Craig.  I heard him answer a W0EOZ CQ last night on VO52 (AT)
> 0418z.  Evidently, they're quite active right now.  Long callsign ..
> would hate to send it on CW.  :-)

Bernardo XE2HWB (DL44) operated as XE83IARU on the AO-51
pass (AT) 1415 UTC this morning, and plans to do more passes
during the weekend.  I don't know if Bernardo is working VO-52
passes, or if he is going to take care of the FM birds.

73!



Patrick WD9EWK/VA7EWK - now in Prescott AZ
http://www.wd9ewk.net/


------------------------------

Message: 2
Date: Sat, 19 Apr 2008 16:22:29 -0700 (PDT)
From: Garie Halstead K8KFJ <khyberpass65(AT)yahoo.com>
Subject: [amsat-bb]  AO-16 (AT)2230z
To: AMSAT-BB(AT)amsat.org
Message-ID: <743903.57743.qm(AT)web65716.mail.ac4.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1

Anyone hear any activity other than W0DXZ in DM33?

73, Gary  -K8KFJ-
WV <EM98cj>




---------------------------------
Be a better friend, newshound, and know-it-all with Yahoo! Mobile.  Try it
now.

------------------------------

Message: 3
Date: Sat, 19 Apr 2008 20:13:40 -0400
From: Paul Kronenwetter <n2kiq(AT)arrl.net>
Subject: [amsat-bb] Re: [aprssig] APRS and the OLPC
To: TAPR APRS Mailing List <aprssig(AT)lists.tapr.org>
Cc: amsat-bb(AT)amsat.org
Message-ID: <480A8AB4.7030903(AT)arrl.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

I've done a little more investigating and the only consistent error I'm
receiving is this:

sm[3179]: audio: snd_pcm_writei: File descriptor in bad state

I've briefly looked at the code in the alsaio.c modules and been tempted
to add code to help it recover from this state, but I'm not an alsa
programmer so I haven't a clue how far I'd need to go.  I welcome and
appreciate any help the community has to offer.

Soundmodem stays running and still properly decodes packets, but won't
encode anything.  It just outputs a large quantity of those error
messages.  What else can I provide?

-Paul

Paul Kronenwetter wrote:
> All,
>
>  I've updated the laptop.org Wiki page with locations to download the
> packages I'm using on the XO.  I had a bit of a delay because I tried
> to update to one of the Joyride builds and it toasted the data on my
> SD card.  I lost all my work.  So, with that out of the way, here are
> the links:
>
> http://n2kiq.dyndns.org.nyud.net/xoaprs/
> http://n2kiq.dyndns.org/xoaprs/
>
> If you can, please use the Coral network to get a faster download speed.
>
> I'm also looking for help getting Thomas Saylor's soundmodem package
> to work with Alsa and a 2.6 kernel.  It builds and runs fine until it
> goes to actually do something with the sound card.  This problem isn't
> specific to the XO, it's just keeping me from using it and another
> system the way I want to.
>
> Thanks all & 73!
> -Paul
>
> Paul Kronenwetter wrote:
>> All,
>>
>> I've started a page on the laptop.org WIKI,  currently at:
>> http://wiki.laptop.org/go/User:Kronenpj to document what I've been
>> doing.  Once I get it a bit further along, I'll see if the OLPC folks
>> want amateur-radio stuff in their wiki or somewhere else.  In the
>> meantime, anyone with comments or suggestions, please use the discussion
>> tab and we'll work through things.
>>
>> -Paul
>>
>> Paul Kronenwetter wrote:
>>
>>> Bob Bruninga wrote:
>>>
>>>>> I think the XO is a... ground breaking device.  Did I get one? No,
>>>>> I realized that it is does not meet my needs and would end up in the
>>>>> closet or given away to a child...
>>>>>
>>>> ...
>>>> I can't wait for the ham software to start working with it.  Talk
>>>> about portability...  The ease of use, will assure that I will now
>>>> probbly have the ham radio laptop apps with me more often than
>>>> before since I will be more apt to carry the small XO at low risk
>>>> then lug the big laptop.
>>>>
>>>> Bob, WB4APR
>>>>
>>> For what it's worth, I've had good success getting Xastir working on
>>> the box.  The only part I'm having real trouble with is soundmodem
>>> keeps
>>> crashing when ever it decodes a packet.  Otherwise all is compiling
>>> and working
>>> nicely, once the appropriate prerequisite packages are installed.
>>>
>>>
>>> -Paul
>>>
>>>
>>
>>
>

--
Paul Kronenwetter - N2KIQ
AEC Technology
Orange County Emergency Amateur Radio Team
Amateur Radio is a hobby, Emergency Communications is a commitment!
http://www.w4mco.org/



------------------------------

Message: 4
Date: Sat, 19 Apr 2008 21:06:56 -0400
From: Lee McLamb <ku4os(AT)cfl.rr.com>
Subject: [amsat-bb]  ANS-111  AMSAT Weekly Bulletins
To: amsat-bb(AT)amsat.org
Message-ID:
	<20080420010657.DETL11174.cdptpa-omta03.mail.rr.com(AT)den.cfl.rr.com>
Content-Type: text/plain; charset="us-ascii"; format=flowed

AMSAT NEWS SERVICE
ANS-111

ANS is a free, weekly, news and information service of AMSAT North America,
The
Radio Amateur Satellite Corporation. ANS reports on the activities of a
worldwide group of Amateur Radio operators who share an active interest in
designing, building, launching and communicating through analog and digital
Amateur Radio satellites.

Please send any amateur satellite news or reports to:

ans-editor(AT)amsat.org


In this edition:
* AMSAT Store and Dayton Update
* Volunteer Opportunities at the AMSAT Lab
* ESA Call for Cubesat Proposals
* Cubesat Workshop Presentations Available
* European Student Earth Orbiter Update
* AMSAT-Australia and Ozdatgroup Combine Forces
* Satellite Shorts From All Over
* ARISS Status - 14 April 2008

SB SAT (AT) AMSAT $ANS-111.01
AMSAT Store and Dayton Update

AMSAT News Service Bulletin 111.01
From AMSAT HQ SILVER SPRING, MD.
April 20, 2008
To All RADIO AMATEURS
BID: $ANS-111.01

The AMSAT Store is still down, but we now have a computer that will be the
server for the AMSAT Store.  We hope to have the store operational as soon
as possible.  This is currently a volunteer effort, travel and work
obligations have slowed down the process of getting the software installed.

AMSAT at the Dayton Hamvention continues to grow. We will have a great Forum
on Saturday morning and many new items available at the booth, including a
limited number of LVB Tracker boxes. The outdoor demonstration area will be
busy all three days plus offer an "Introduction to Amateur Satellite
Operation" talk Friday and Saturday afternoons.
Be sure and contact Martha to make your reservations for the joint
AMSAT/TAPR Banquet Friday night May 16.
Be sure an join us for the Pizza and Suds gathering on Thursday night.
Additional information can be found on the AMSAT web site,
http://www.amsat.org

[ANS thanks Gould, WA4SXM, for the above information]

 /EX


SB SAT (AT) AMSAT $ANS-111.02
Volunteer Opportunities at the AMSAT Lab

AMSAT News Service Bulletin 111.02
From AMSAT HQ SILVER SPRING, MD.
April 20, 2008
To All RADIO AMATEURS
BID: $ANS-111.02

Bob Davis, KF4KSS, AMSAT Lab Manager says the AMSAT Lab in Pocomoke
City, Maryland will be open for work days on the following Saturdays:

Sat Apr 26 Open 9-5
Sat May  3 Open 9-5
Sat May 10 Open 9-5
Sat May 17 Closed - Dayton Hamvention

Again, if you're interested in coming and need directions or just
want to talk first, send Bob an email KF4KSS(AT)amsat.org or call
443-783-7794.

[ANS thanks Bob, KF4KSS for the above information]

 /EX


SB SAT (AT) AMSAT $ANS-111.03
ESA Call for Cubesat Proposals

AMSAT News Service Bulletin 111.03
From AMSAT HQ SILVER SPRING, MD.
April 20, 2008
To All RADIO AMATEURS
BID: $ANS-111.03

The European Space Agency Education Office has received good response to
its call for CubeSat proposals issued last month to universities in ESA
member nations and other cooperating states.  This to participate in the
development of an educational payload for  the maiden flight of the new
Vega launch rocket currently scheduled for December.

The launch opportunity on the Vega maiden flight is being offered free of
charge for up to 6 CubeSats, with an additional 2 backup CubeSats on back
up standby.  The ESA Education Office says that it recognizes the growing
importance of CubeSat projects as a key tool in providing university
students with a valuable hands-on practical education across all space
engineering disciplines from end-to-end through the complete space project
lifecycle.

[ANS thanks Newsline for the above information]

 /EX


SB SAT (AT) AMSAT $ANS-111.04
Cubesat Workshop Presentations Available

AMSAT News Service Bulletin 111.04
From AMSAT HQ SILVER SPRING, MD.
April 20, 2008
To All RADIO AMATEURS
BID: $ANS-111.04

The 5th Annual  Cubesat Developers Workshop was held at CalPoly in San Luis
Obispo April 9-11 2008.

The workshop featured over forty presentations covering information for new
Cubesat developers, innovative avionics, nanosatellites, access to
space, ground
station operations, and unique missions.

All of the presentation have been posted on Cubesat.org:
http://cubesat.atl.calpoly.edu/pages/workshops/developers-workshop-2008.php

[ANS thanks Bryan, KF6ZEO, for the above information]

 /EX


SB SAT (AT) AMSAT $ANS-111.05
European Student Earth Orbiter Update

AMSAT News Service Bulletin 111.05
From AMSAT HQ SILVER SPRING, MD.
April 20, 2008
To All RADIO AMATEURS
BID: $ANS-111.05

It has been quite a time since the AMSAT-UK European Student Earth Orbiter
(ESEO) team have been able to provide an update on the progress of this
satellite payload and just recently ESA have made a major change to the
structure of the project organization.

The plan has been to develop a package to provide downlink telemetry at 400
bps
and provide backup tele-command and ranging facilities for the mission
management teams. It would, additionally, provide a 435 to 2400 MHz (Mode U/S)
linear transponder using both analogue and DSP based systems.

ESEO is a 110kg student satellite project intended for launch in to low
inclination GTO elliptical orbit.

Until the beginning of 2008 the whole ESEO project had been organized directly
by ESA Education Office under the SSETI (Student Space Exploration &
Technology
Initiative) banner but they have now decided to adopt new arrangements.

To quote from the ESA website

" To date, both projects (ESEO and ESMO)  have proceeded in the early
phases
with a project team consisting entirely of students with project
management and
ad hoc technical support provided by ESA.

It is now intended to implement a new project team structure for these two
projects in order to enhance the educational benefits given to the
students and
to ensure that the project progresses through major reviews to a successful
completion on schedule. The new project structure consists of:

* a System Prime responsible for the system engineering and technical
management of the project, the provision of specialist technical
advice to the
students where needed, and supervising the student AIV(Assembly
Integration &
Verification) of the satellite at ESTEC.

* a Network of Universities responsible for the delivery of payload
items,
satellite subsystem items and ground segment systems by their
student teams and
ensuring the adequate supervision/long-term continuity of the
student teams
locally."

What does this mean for AMSAT-UK's involvement in the project?

The launch date is now not expected to be earlier than 2011.

The process for the appointment of the System Prime Contractor is presently
underway and is expected to be completed by later this year.

After the System Prime has been appointed, we will work with them and with ESA
Education to ensure that the AMSAT sub-system is available when required by
the
programme.

Further information should be available in time for the AMSAT-UK Colloquium
which is being held at the University of Surrey at Guildford from
Friday 25th to
Sunday 28th July,

[ANS thanks AMSAT-UK for the above information]

 /EX


SB SAT (AT) AMSAT $ANS-111.06
AMSAT-Australia and Ozdatgroup Combine Forces

AMSAT News Service Bulletin 111.06
From AMSAT HQ SILVER SPRING, MD.
April 20, 2008
To All RADIO AMATEURS
BID: $ANS-111.06

You may not be aware that AMSAT-Australia and the Ozsatgroup have
amalgamated, and that the new combined group has retained the name
AMSAT-Australia.

AMSAT-Australia and the Ozsatgroup have been working together for more
than two years, and have been discussing such an amalgamation for some
time.

The decision to go ahead with the amalgamation was made after Graham
Ratcliff, VK5AGR formally tended his resignation as AMSAT-Australia
National Coordinator and as AMSAT Coordinator for the Wireless
Institute of Australia (WIA) in his annual report to the WIA 2008
Federal Convention on Monday, 7th April 2008.

The role of AMSAT-Australia National Coordinator has been taken on by
myself Paul Paradigm, VK2TXT, formally the Coordinator of the
Ozsatgroup, and joined by Judy Williams, VK2TJU in the role of
AMSAT-Australia Secretary.

I would like to take this opportunity on behalf of both the Amateur
Radio operators on the AMSAT-Australia mailing list and the members of
the former Ozsatgroup to thank Graham for his outstanding contribution
to the Amateur Radio community here in Australia and around the world.

Graham has been in the role of AMSAT-Australia National Coordinator
since 1983, and has been the driving force behind AMSAT-Australia
since its inception.

Visit our website at http://www.amsat-vk.org for more information.

73's

Paul - VK2TXT
AMSAT-Australia National Coordinator.

[ANS thanks Paul, VK2TXT for the above information]

 /EX


SB SAT (AT) AMSAT $ANS-111.07
Satellite Shorts From All Over

AMSAT News Service Bulletin 111.07
From AMSAT HQ SILVER SPRING, MD.
April 20, 2008
To All RADIO AMATEURS
BID: $ANS-111.07

+ Robert, G8ATE has updated his web site at
http://www.turlington.supanet.com to show an SSTV contact with
GM0ICF via VO52 and Field Hell tests via AO7 mode B, AO16,S O50,
AO51 & VO52.

+ When operating on AO-7 keep an ear open for the informal "DX
Watering Hole" near 145.959 MHz +/-.  This is the proposed
frequency for those "footprint stretching", edge-to-edge QSO's
on AO-7.

+ The Federal Communications Commission says it is seeking
applications from engineering school graduates with superior
academic credentials and an interest in communications engineering
for its 2008 Engineer-in-Training Program. Additional information
is available on the FCC's EIT Program page at
http://www.fcc.gov/EITprogram, or by contacting the FCC's Human
Resources Office at area code 202-418-0130.  You can also e-mail
for more information to recruit(AT)fcc.gov. (via Amateur Radio Newsline)

+ Reminder!  Visit the AMSAT Dayton Web page to learn of the latest
events planned for this year's Hamvention:
http://www.amsat.org/amsat-new/hamvention/2008/Dayton2008.php

[ANS thanks everyone for the above information]

 /EX



SB SAT (AT) AMSAT $ANS-111.08
ARISS Status - 14 April 2008

AMSAT News Service Bulletin 111.08
From AMSAT HQ SILVER SPRING, MD.
April 20, 2008
To All RADIO AMATEURS
BID: $ANS-111.08

1. Upcoming School Contacts

Arnold Palmer Hospital for Children in Orlando, Florida has been scheduled for
an Amateur Radio on the International Space Station (ARISS) contact on Monday,
April 21 at 17:48 UTC via the telebridge station W6SRJ in Santa Rosa,
California.  The audio for this event will be fed into the EchoLink AMSAT (101
377) and JK1ZRW (277 208) Conference Room servers and the IRLP Discovery
Reflector 9010.


2. Croatian Contact Successful

On Monday, April 7, students from Osnovna skola Pazin in Croatia
participated in
a successful Amateur Radio on the International Space Station (ARISS) contact.
Garrett Reisman, KE5HAE, answered 15 questions posed to him by 6 students as
an
audience of 100 people gathered around the radio.  Three national television
stations, three radio stations and five newspapers covered the
event.  The audio
was fed into the EchoLink AMSAT (101 377) and JK1ZRW (277 208) servers and
received 16 connections, including 3 link nodes and 1 repeater node, from 11
countries.


3. First Korean Contact Successful

Students attending the Han Gwang Boys & Girls High School in Pyeong Taek City,
Republic of Korea experienced an Amateur Radio on the International Space
Station (ARISS) contact on Sunday, April 13. South Korean space visitor Yi
So-yeon, HL0ARISS, answered 12 students' questions. Over 500 people
attended the
event. Media coverage included 5 television stations and 10 newspapers.


4. ARISS Crew Debrief Held

A debrief session was held between the Amateur Radio on the International
Space
Station (ARISS) team and Expedition 16 crew member Leopold Eyharts,
KE5FNO/FX0STD, on Monday, April 7. Eyharts provided feedback on ARISS school
contacts and operation of the ARISS radio equipment.


5. ARISS Presentation at Dayton Hamvention

The Dayton Hamvention will be held at the Hara Arena Complex in Dayton, Ohio
on
May 16 - 18. The American Radio Relay League (ARRL) and the Radio Amateur
Satellite Corporation (AMSAT) will both support exhibit booths at the event.
Amateur Radio on the International Space Station (ARISS) Chairman Frank Bauer
plans to give a presentation on "A Ham Radio Operator's View of ARISS" at the
AMSAT forum which will cover new ARISS initiatives and a status report on
SuitSat-2.  The Dayton Hamvention is an internationally attended amateur radio
convention that draws crowds of 25,000 annually.
For more information on Dayton Hamvention 2008, go to:
http://www.hamvention.org/hv2008/forums/forumlist.htm

[ANS thanks Carol, KB3LKI, for the above information]

 /EX


In addition to regular membership, AMSAT offers membership in the President's
Club. Members of the President's Club, as sustaining donors to AMSAT Project
Funds, will be eligible to receive additional benefits. Application forms are
available from the AMSAT Office.

73,
This week's ANS Editor,
Lee McLamb, KU4OS
ku4os at amsat dot org



------------------------------

Message: 5
Date: Sat, 19 Apr 2008 21:53:17 -0500
From: Michael Pfeuffer <wq5c(AT)texas.net>
Subject: [amsat-bb] Re: Any feedback on Mirage KP1-440 Preamp?
To: amsat-bb(AT)amsat.org
Message-ID: <6.1.2.0.2.20080419214934.0a0953c0(AT)pop.texas.net>
Content-Type: text/plain; charset=us-ascii; format=flowed

DEMI makes a couple of nice pre-amps, but they don't have switching and
require external power.  Has anyone tried to add a T/R switch & coax bias
to mast mount them?

--Mike  WQ5C


At 03:23 PM 4/18/2008, Michael Tondee wrote:
>I just got the Icom AG-35 to use with my IC-820H. It's  a bit cheaper than
>the ARR and SSB electronics units and handles 100 watts. I know that it
>doesn't have as good a noise figure as the ARR and SSB electronic units but
>I couldn't afford them and I got the Icom at a discount from a ham store I
>used to work for. I used to have an ARR 160 rated watt mast mount and sold
>it when I sold my TS-2000X. I'm just now about to install the AG-35 so I
>hope it helps. One things for sure, it's tough sledding without a preamp on
>70cm.
>73,
>Michael, W4HIJ
>----- Original Message -----
>From: "Mike Ryan" <mryan301(AT)comcast.net>
>To: <amsat-bb(AT)amsat.org>
>Sent: Thursday, April 17, 2008 11:13 PM
>Subject: [amsat-bb] Any feedback on Mirage KP1-440 Preamp?
>
>
> > Hello all,
> >
> > Zapped my ARR RX only preamp for the second time out of stupidity. Time
>for a switched model. Cant afford the $200+ amps from SSB and such. The
>Mirage seems attractive. Can anyone share their experiences with this model
>or suggest a differnt affordable preamp? I looked at the ARR switched models
>already. The high powerd mast mount is too much $$ and the low power one
>only handles 25 watts. I could easily smoke that one out of stupidity as
>well (my rig can do 50 watts).
> >
> > Mike WB1AAT
>
>_______________________________________________
>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: 6
Date: Sun, 20 Apr 2008 08:36:07 +0200 (CEST)
From: "Henk, PA3GUO" <hamoen(AT)iae.nl>
Subject: [amsat-bb] Re: AO-16 (AT)2230z
To: <amsat-bb(AT)amsat.org>
Message-ID: <1345.212.61.85.173.1208673367.squirrel(AT)webmail.iae.nl>
Content-Type: text/plain; charset=iso-8859-1

Hi Gary,

No, I didn't, but the passes before that one were great.
Yesterday was for me the 1st time I had time to try AO16.

Signals got really strong(er) in the last minutes of a pass.
Between 2 downto 0.5 degrees elevation the link was better as
between 5 downto 2 degrees. I recall that AO7 145/29mhz mode
had the same effect at my station. Kinda good for long distance
contacts :-)

Anyway, despite that, I 'only' worked other European stations,
no Canada or US (OZ1MY, RK3DXB, SP9TTX, G8ATE). MP3 recordings
are on my website (http://www.qsl.net/pa3guo under LOGS).

But: of course looking forward to some intercontinental QSOs !

Henk, PA3GUO

> Anyone hear any activity other than W0DXZ in DM33?
> 73, Gary  -K8KFJ-





------------------------------

Message: 7
Date: Sat, 19 Apr 2008 23:15:37 -0800
From: Edward Cole <kl7uw(AT)acsalaska.net>
Subject: [amsat-bb] Re: Any feedback on Mirage KP1-440 Preamp?
To: Michael Pfeuffer <wq5c(AT)texas.net>, amsat-bb(AT)amsat.org
Message-ID: <200804200715.m3K7FbvJ099379(AT)hermes.acsalaska.net>
Content-Type: text/plain; charset="us-ascii"; format=flowed

Adding a coax relay is not hard.  I don't get why its such a big deal
to power preamps thru the coax.  Serious VHFers do not do this but
run separate power wiring to the preamp.

BTW you can leave preamps powered all the time (even when
transmitting); GasFets are more immune to burn out when biased on.  I
am talking about a small amount of RF leakage thru the coax
relay.  This applies only for simple preamps and not the RF switched
versions.  Most of those sense RF and switch to bypass in
transmit.  Transmitting directly into a simple preamp will destroy it.

If you are running a transceiver with only a single antenna connector
for receive and transmit, you will need two coax relays: one on the
antenna side of the preamp and one on the radio side.  In transmit
the relays bypass the preamp with a short coax jumper.  The coax
relays will need to be controlled by the radio's PTT control
line.  Most high-level muli-mode radios have this available on an
accessory jack.  I do not know if this is normally available on
FM-only VHF/UHF radios and you will have to look in the manual for
your radio to determine this.

If you must power your preamp thru the coax then DEMI makes a bias
inserter.  If you do this then you will need to pick off 12v from the
inserter to power the preamp and relays.  Configure the relays to
bypass when unpowered.  Again, this does not apply to RF switched
preamps.  As far as I know most radios are unable to supply
sufficient current to power a relay.  I think powering preamps with
your radio up th ecoax mostly applies to the RF-switched versions.

As a side note:  I have added a webpage to show how to provide a
direct rx antenna connection on the FT-847:
http://www.kl7uw.com/FT-847RXANT.htm

It refers to article done by DL4MEA.

73 Ed - KL7UW



At 06:53 PM 4/19/2008, Michael Pfeuffer wrote:
>DEMI makes a couple of nice pre-amps, but they don't have switching and
>require external power.  Has anyone tried to add a T/R switch & coax bias
>to mast mount them?
>
>--Mike  WQ5C
>
>
>At 03:23 PM 4/18/2008, Michael Tondee wrote:
> >I just got the Icom AG-35 to use with my IC-820H. It's  a bit cheaper than
> >the ARR and SSB electronics units and handles 100 watts. I know that it
> >doesn't have as good a noise figure as the ARR and SSB electronic units but
> >I couldn't afford them and I got the Icom at a discount from a ham store I
> >used to work for. I used to have an ARR 160 rated watt mast mount and sold
> >it when I sold my TS-2000X. I'm just now about to install the AG-35 so I
> >hope it helps. One things for sure, it's tough sledding without a preamp on
> >70cm.
> >73,
> >Michael, W4HIJ
> >----- Original Message -----
> >From: "Mike Ryan" <mryan301(AT)comcast.net>
> >To: <amsat-bb(AT)amsat.org>
> >Sent: Thursday, April 17, 2008 11:13 PM
> >Subject: [amsat-bb] Any feedback on Mirage KP1-440 Preamp?
> >
> >
> > > Hello all,
> > >
> > > Zapped my ARR RX only preamp for the second time out of stupidity. Time
> >for a switched model. Cant afford the $200+ amps from SSB and such. The
> >Mirage seems attractive. Can anyone share their experiences with this model
> >or suggest a differnt affordable preamp? I looked at the ARR switched
models
> >already. The high powerd mast mount is too much $$ and the low power one
> >only handles 25 watts. I could easily smoke that one out of stupidity as
> >well (my rig can do 50 watts).
> > >
> > > Mike WB1AAT
> >
> >_______________________________________________
> >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: Sun, 20 Apr 2008 04:54:13 -0500
From: "Nick Pugh" <quadpugh(AT)bellsouth.net>
Subject: [amsat-bb]  software
To: <amsat-bb(AT)amsat.org>
Message-ID: <003401c8a2cc$7e7dc960$6301a8c0(AT)nick1>
Content-Type: text/plain;	charset="iso-8859-1"

Hi Amsatters
I am looking for software that will capture data out of a rs232 serial port. I
expect the data to be ascii or hex. The format I would like to what you see
when you turn the trace command on a TNC.

thanks
nick

------------------------------

_______________________________________________
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 189
****************************************


Read previous mail | Read next mail


 14.03.2026 10:12:39lGo back Go up