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CX2SA > SATDIG 05.04.08 14:00l 900 Lines 29521 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Re: cross boom? (Jim Jerzycke)
2. Re: Best HT's for sats? (Bill Dzurilla)
3. Re: [fm-satellite] Re: Re: Best HT's for sats? (Rafael Valdez G.)
4. Re: cross boom? (Gary "Joe" Mayfield)
5. Re: Best HT's for sats? (Robert Bruninga)
6. Delfi3C (G0MRF(AT)aol.com)
7. Re: Best HT's for sats? (Jim Jerzycke)
8. Re: Best HT's for sats? (Jeff Mock)
9. Looking for 10 Mtr loop info (Ronald Nutter)
10. Re: Best HT's for sats? (Scott Richardson)
11. Re: Best HT's for sats? (Bill Dzurilla)
12. AO7 PH7PCF (k3szh(AT)netzero.net)
13. Re: Delfi3C (Kent R. Frazier)
14. Re: Best HT's for sats? (Andrew Glasbrenner)
15. Re: cross boom? (Michael A. Tondee)
16. Re: cross boom? (Edward Cole)
----------------------------------------------------------------------
Message: 1
Date: Fri, 4 Apr 2008 13:06:51 -0700 (PDT)
From: Jim Jerzycke <kq6ea(AT)pacbell.net>
Subject: [amsat-bb] Re: cross boom?
To: Jonny 290 <jonny290(AT)gmail.com>, amsat-bb(AT)amsat.org
Message-ID: <831766.8799.qm(AT)web80604.mail.mud.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1
Max-Gain Systems has some great quality stuff at very
reasonable prices.
http://www.mgs4u.com/
73, Jim KQ6EA
--- Jonny 290 <jonny290(AT)gmail.com> wrote:
> I had good luck with Schedule 40 and a broomstick,
> as well. Run the
> broomstick through the PVC and bolt it twice on each
> end such that each end
> has two bolts running through it in a 'cross'
> configuration.
>
> It's not as light as fiberglass but the rigidity is
> great for my 2x8element
> array 25 feet off the ground.
>
>
> On Fri, Apr 4, 2008 at 12:49 PM, Curt Nixon
> <cptcurt(AT)flash.net> wrote:
>
> > Pretty simple to make a fiber pole functional
> equal.
> >
> > use a pc of schedule 40 PVC pipe. apply a couple
> of wraps of 5 oz glass
> > cloth using epoxy or polyester resin. The glass
> will prevent the PVC
> > from sagging and adds great strength.
> >
> > FWIW
> >
> > KU8L Curt
> >
> >
> >
> >
> >
> > K7WIN - Jeff wrote:
> > > Hi Bob,
> > >
> > > I ordered the fiberglass M2 boom from RANDL.com,
> item HDFGBOOMKIT
> > >
>
(http://www.rlham.com/cgi-bin/shop/modellookup.dbw?MODEL=HDFGBOOMKIT);
> > > however, is a bit pricey at $184.95 plus
> shipping. I have read where
> > other
> > > homemade methods have been used with success.
> > >
> > > Are you going to use both azimuth and elevation
> rotors or just azimuth?
> > >
> > > 73,
> > > Jeff - K7WIN
> > >
> > >
> > > ----- Original Message -----
> > > From: <w0dxz(AT)aol.com>
> > > To: <amsat-bb(AT)amsat.org>
> > > Sent: Friday, April 04, 2008 7:36 AM
> > > Subject: [amsat-bb] cross boom?
> > >
> > >
> > >
> > >> In putting together my antenna,?? (144-432)I
> need something to use as a
> > >> horizontal- cross? support boom. What would be
> the best length, and,?
> > what
> > >> would be the minimum length,,,? would 6? ft
> separation be OK?? To
> > minimize
> > >> problems, should I mount one beam horizontal,
> one vertical? Does it
> > matter
> > >> which one, is? which way?
> > >>
> > >> I doubt I can find a fiberglas boom locally,,,?
> what else could I use??
> > >> or, where can I order a fiberglas boom?
> > >>
> > >> thanks
> > >> Bob W0DXZ
> > >> _______________________________________________
> > >> 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
> > >
> > >
> >
> > _______________________________________________
> > 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: 2
Date: Fri, 4 Apr 2008 14:35:48 -0700 (PDT)
From: Bill Dzurilla <billdz.geo(AT)yahoo.com>
Subject: [amsat-bb] Re: Best HT's for sats?
To: fm-satellite(AT)yahoogroups.com
Cc: amsat-bb(AT)amsat.org
Message-ID: <152958.95133.qm(AT)web51112.mail.re2.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1
Dan,
Thanks for uploading the paper, very helpful. Guess
no one rig can please everyone, but what is it about
the FT-530 that makes it "very awkward to operate"?
Drew KO4MA gave the FT-530 high praise in his post.
I could never hear my downlink on the IC-W32A I
borrowed for Swan Island, and if you can't use it to
work full duplex, might as well buy a brand new FT-60
for about the same price as the W32A sells for on
eBay. Also, you can't work the ISS with an unmodified
W32A, as it won't transmit below 440 mhz.
I know it's possible to hear your downlink on the FM
birds with some rigs, because many have written about
it. I've had no luck with 3 different rigs, even with
separate radios and separate antennas. No problem for
me to work duplex on AO-7 and VO-52, must be the third
harmonic that is the issue with AO-51, AO-27, and
SO-50.
A lot of folks seem to like the Kenwood TH-D7A, but
the price tag is quite high for a radio that is "very
delicate," "extremely difficult to program," and "poor
battery life".
73, Bill NZ5N
>>Posted by: "Dan O'Barr" kl7dr(AT)yahoo.com kl7dr
Thu Apr 3, 2008 9:13 pm (PDT)
I uplaoded my white paper on the best Walkie-Talkies
to operate the LEO Amateur
satellites.
>>You can access this file at the URL:
http://groups. yahoo.com/
group/fm-satellite/files/Best%20Walkie-Talkies.doc
73,
Dan O, KL7DR
______________________________________________________________________________
______
You rock. That's why Blockbuster's offering you one month of Blockbuster Total
Access, No Cost.
http://tc.deals.yahoo.com/tc/blockbuster/text5.com
------------------------------
Message: 3
Date: Fri, 4 Apr 2008 14:52:13 -0700
From: "Rafael Valdez G." <rafavaldez(AT)hotmail.com>
Subject: [amsat-bb] Re: [fm-satellite] Re: Re: Best HT's for sats?
To: <fm-satellite(AT)yahoogroups.com>
Cc: amsat-bb(AT)amsat.org
Message-ID: <BAY111-W39F45304F547DEF7D595FDDBF60(AT)phx.gbl>
Content-Type: text/plain; charset="iso-8859-1"
Bill
I have been using FT530 for many years but on satellite for the last 12
months. is really easy to use once you have channels programed for both VFO's.
you only move VFO B (UHF) for doppler tracking and back to VFO for Tx. has two
volume/Squelch knob's and is excellent for full duplex operation....
Rafael Valdez Jr.
XE2RV (AT) DL55
10X-52716
QRV V/U Sat
EX-XE2PWF
P Before printing, please think about your responsibilityand commitment with
the ENVIRONMENT. Antes de Imprimir, piensa entu responsabilidad y compromiso
con el MEDIO AMBIENTE
To: fm-satellite(AT)yahoogroups.comCC: amsat-bb(AT)amsat.orgFrom:
billdz.geo(AT)yahoo.comDate: Fri, 4 Apr 2008 14:35:48 -0700Subject: [fm-
satellite] Re: [amsat-bb] Re: Best HT's for sats?
Dan,Thanks for uploading the paper, very helpful. Guessno one rig can please
everyone, but what is it aboutthe FT-530 that makes it "very awkward to
operate"? Drew KO4MA gave the FT-530 high praise in his post.I could never
hear my downlink on the IC-W32A Iborrowed for Swan Island, and if you can't
use it towork full duplex, might as well buy a brand new FT-60for about the
same price as the W32A sells for oneBay. Also, you can't work the ISS with an
unmodifiedW32A, as it won't transmit below 440 mhz.I know it's possible to
hear your downlink on the FMbirds with some rigs, because many have written
aboutit. I've had no luck with 3 different rigs, even withseparate radios and
separate antennas. No problem forme to work duplex on AO-7 and VO-52, must be
the thirdharmonic that is the issue with AO-51, AO-27, andSO-50.A lot of folks
seem to like the Kenwood TH-D7A, butthe price tag is quite high for a radio
that is "verydelicate," "extremely difficult to program," and "poorbatter!
y life".73, Bill NZ5N>>Posted by: "Dan O'Barr" kl7dr(AT)yahoo.com kl7drThu
Apr 3, 2008 9:13 pm (PDT)I uplaoded my white paper on the best Walkie-
Talkiesto operate the LEO Amateursatellites.>>You can access this file at the
URL:http://groups. yahoo.com/group/fm-satellite/files/Best%20Walkie-
Talkies.doc73,Dan O, KL7DR
__________________________________________________________You rock. That's why
Blockbuster's offering you one month of Blockbuster Total Access, No Cost.
http://tc.deals.yahoo.com/tc/blockbuster/text5.com__._,_.___
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------------------------------
Message: 4
Date: Fri, 4 Apr 2008 17:15:10 -0500
From: "Gary \"Joe\" Mayfield" <gary_mayfield(AT)hotmail.com>
Subject: [amsat-bb] Re: cross boom?
To: <w0dxz(AT)aol.com>, <amsat-bb(AT)amsat.org>
Message-ID: <BLU137-DAV645945C65C9C9D421242D8AF60(AT)phx.gbl>
Content-Type: text/plain; charset="us-ascii"
You were not clear on whether they are circular or linear. If they are
linear mount them both vertical and use steel tubing. If they are circular
you can still use steel tubing, just be careful where on the boom you attach
it.
It's and age old debate :-)
http://www.g6lvb.com/fibermetalboom.htm
73,
Joe kk0sd
-----Original Message-----
From: amsat-bb-bounces(AT)amsat.org [mailto:amsat-bb-bounces(AT)amsat.org] On
Behalf Of w0dxz(AT)aol.com
Sent: Friday, April 04, 2008 9:36 AM
To: amsat-bb(AT)amsat.org
Subject: [amsat-bb] cross boom?
In putting together my antenna,?? (144-432)I need something to use as a
horizontal- cross? support boom. What would be the best length, and,? what
would be the minimum length,,,? would 6? ft separation be OK?? To minimize
problems, should I mount one beam horizontal, one vertical? Does it matter
which one, is? which way?
I doubt I can find a fiberglas boom locally,,,? what else could I use?? or,
where can I order a fiberglas boom?
thanks
Bob W0DXZ
_______________________________________________
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: 5
Date: Fri, 4 Apr 2008 19:16:12 -0400
From: "Robert Bruninga" <bruninga(AT)usna.edu>
Subject: [amsat-bb] Re: Best HT's for sats?
To: <fm-satellite(AT)yahoogroups.com>
Cc: amsat-bb(AT)amsat.org
Message-ID: <004901c896a9$dfe95770$42577a83(AT)ewlab.usna.edu>
Content-Type: text/plain; charset="us-ascii"
> A lot of folks seem to like the Kenwood TH-D7A, but
> the price tag is quite high for a radio that is "very
> delicate," "extremely difficult to program," and "poor
> battery life".
I donno. I've drop kicked mine a number of times. It is trivial
to program either with the TEXT menus, and full 4-way joy stick,
or the PC program. Poor battery life only if you have evrything
running to the max:
1) Both internal radios on
2) Internal TNC on
3) Battery saver off
4) Transmitting APRS beacons evey minute at high power
But then that's why most people bought the radio to do all those
things..
------------------------------
Message: 6
Date: Fri, 4 Apr 2008 19:59:25 EDT
From: G0MRF(AT)aol.com
Subject: [amsat-bb] Delfi3C
To: amsat-bb(AT)amsat.org
Message-ID: <d5a.24335d27.35281add(AT)aol.com>
Content-Type: text/plain; charset="US-ASCII"
Hi all.
Hopefully 16 days and counting...
The following has appeared on the website. delfi3c.nl
"The launch preparation team has safely arrived in India and is busy checking
Delfi-C3. Everything has been found ok so far. The launch window remains as
is. "
Regards
David
------------------------------
Message: 7
Date: Fri, 4 Apr 2008 17:03:33 -0700 (PDT)
From: Jim Jerzycke <kq6ea(AT)pacbell.net>
Subject: [amsat-bb] Re: Best HT's for sats?
To: bruninga(AT)usna.edu, fm-satellite(AT)yahoogroups.com
Cc: amsat-bb(AT)amsat.org
Message-ID: <731325.86036.qm(AT)web80602.mail.mud.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1
I agree with Bob. Mine's been banged around more than
a little bit, and keeps working just fine. As far as
the battery life "issue", I bought a replacement PB39
100mAH NiMH pack from the NiCd Lady for $45, and it
lasts quite a while.
I'm very satisfied with it.
Jim KQ6EA
--- Robert Bruninga <bruninga(AT)usna.edu> wrote:
> > A lot of folks seem to like the Kenwood TH-D7A,
> but
> > the price tag is quite high for a radio that is
> "very
> > delicate," "extremely difficult to program," and
> "poor
> > battery life".
>
> I donno. I've drop kicked mine a number of times.
> It is trivial
> to program either with the TEXT menus, and full
> 4-way joy stick,
> or the PC program. Poor battery life only if you
> have evrything
> running to the max:
>
> 1) Both internal radios on
> 2) Internal TNC on
> 3) Battery saver off
> 4) Transmitting APRS beacons evey minute at high
> power
>
> But then that's why most people bought the radio to
> do all those
> things..
>
> _______________________________________________
> 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: Fri, 04 Apr 2008 17:04:40 -0700
From: Jeff Mock <jeff(AT)mock.com>
Subject: [amsat-bb] Re: Best HT's for sats?
To: amsat-bb(AT)amsat.org
Message-ID: <47F6C218.7070301(AT)mock.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Bill Dzurilla wrote:
>
> I could never hear my downlink on the IC-W32A I
> borrowed for Swan Island, and if you can't use it to
> work full duplex, might as well buy a brand new FT-60
> for about the same price as the W32A sells for on
> eBay. Also, you can't work the ISS with an unmodified
> W32A, as it won't transmit below 440 mhz.
>
An unmodified W32A transmits on both 70cm and 2m, it should
be fine for working ISS:
http://www.mock.com/icw32ae_manual.pdf
It's kind of a cool full duplex radio that you don't
really see anymore. It has 2 VHF receivers, 2 UHF
receivers, 1 VHF transmitter, and 1 UHF transmitter that
all tune independently, so it's quite flexible. I've
had mine for 10-years now and I haven't found something
to replace it.
jeff
AD6EO
------------------------------
Message: 9
Date: Fri, 04 Apr 2008 19:13:59 -0500
From: Ronald Nutter <rnutter(AT)networkref.com>
Subject: [amsat-bb] Looking for 10 Mtr loop info
To: amsat-bb(AT)amsat.org
Message-ID: <47F6C447.2070400(AT)networkref.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I am trying to put together an antenna for AO-7 downlink on 10 meters.
At one point I had a copy of an article from an older AMSAT journal but
due to a move last year across country, I seem to have misplaced it.
Does anyone happen to have a copy they can share with me ? I am trying
to get fluent with the SSB birds prior to Field Day since the FM birds
will pretty be useless that weekend.
Thanks,
Ron
KA4KYI
------------------------------
Message: 10
Date: Fri, 4 Apr 2008 20:15:13 -0400
From: "Scott Richardson" <scott(AT)aves-specta.com>
Subject: [amsat-bb] Re: Best HT's for sats?
To: <amsat-bb(AT)amsat.org>
Message-ID: <00ca01c896b2$1fd336a0$6501a8c0(AT)seaturtle>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
I've been using a VX-150 and FT-470 and it has been working well. I haven't
tried duplex with the 470. It's a quirky hamfest bargain.
To replace my handhelds, I'd wonder about the best mobiles for sats -- a
little more oomph when necessary, larger display and controls -- that would
serve well as a solar-powered portable. But that's probably another thread.
73, Scott N1AIA
------------------------------
Message: 11
Date: Fri, 4 Apr 2008 17:20:40 -0700 (PDT)
From: Bill Dzurilla <billdz.geo(AT)yahoo.com>
Subject: [amsat-bb] Re: Best HT's for sats?
To: amsat-bb(AT)amsat.org
Message-ID: <461378.20896.qm(AT)web51112.mail.re2.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1
You mean you have to switch to the receive VFO and
then switch back to the uplink VFO every time we
need to make a Doppler correction? It's not cold here
in Florida, but I can sure see how that would be
annoying. Andrew said the FT-530 has a "subband
tune function," what about that?
73, Bill
> --- Dan O'Barr <kl7dr(AT)yahoo.com> wrote:
>
> > Hi Rafael and Bill,
> >
> > That?s the issue with the FT-530, and it?s the
> same
> > with the Alinco DJ-580.
> > They are both very good radios for full duplex. If
> > you are in a warm climate,
> > and do not have to wear gloves, then all the
> button
> > pushing to change back and
> > forth between VHF for transmitting and then to UHF
> > for receiving and changing
> > frequencies for Doppler, then it?s no big deal.
> > However, up here the ability to
> > just program 5 spit channels, like the VX-7R,
> makes
> > it a lot easier to work a
> > pass. I believe the FT-51 has the capability of
> > working full duplex with a
> > setting that allows the operator to transmit on
> one
> > band and receive and tune
> > on the other.
______________________________________________________________________________
______
You rock. That's why Blockbuster's offering you one month of Blockbuster Total
Access, No Cost.
http://tc.deals.yahoo.com/tc/blockbuster/text5.com
------------------------------
Message: 12
Date: Sat, 5 Apr 2008 01:04:22 GMT
From: "k3szh(AT)netzero.net" <k3szh(AT)netzero.net>
Subject: [amsat-bb] AO7 PH7PCF
To: amsat-bb(AT)amsat.org
Message-ID: <20080404.180422.27188.0(AT)webmail19.dca.untd.com>
Content-Type: text/plain; charset=windows-1252
Great job and congratulation Aldert on your 1000 plus qso's on AO7, it's a
wonderful satellite on which we can actually have a meaningful qso.I am glad
to be one of your many friends to be part of that.
73
Joe
Amsat 3788
_____________________________________________________________
Own the Ultimate Platinum Credit Card. Click here.
http://thirdpartyoffers.netzero.net/TGL2221/fc/Ioyw6i4tDlh8nJcx8oh1fYl100TkO6m
8vgk9rtn4UYhLFfIFs15QTT/
------------------------------
Message: 13
Date: Fri, 4 Apr 2008 20:26:56 -0500
From: "Kent R. Frazier" <k5knt(AT)amsat.org>
Subject: [amsat-bb] Re: Delfi3C
To: AMSAT-BB <amsat-bb(AT)amsat.org>
Message-ID:
<7caa889a0804041826k12e2a544k6bd6710abc4f43e2(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
I can't load the page...
"Firefox can't find the server at www.delfi3c.nl"
Resolved, it should be http://www.delfic3.nl
Kent
On Fri, Apr 4, 2008 at 6:59 PM, <G0MRF(AT)aol.coIm> wrote:
> Hi all.
>
> Hopefully 16 days and counting...
>
> The following has appeared on the website. delfi3c.nl
>
>
> "The launch preparation team has safely arrived in India and is busy
> checking
> Delfi-C3. Everything has been found ok so far. The launch window remains
> as
> is. "
> Regards
> David
>
>
>
>
> _______________________________________________
> 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
>
--
Kent R. Frazier, K5KNT
------------------------------
Message: 14
Date: Fri, 4 Apr 2008 21:53:27 -0400
From: "Andrew Glasbrenner" <glasbrenner(AT)mindspring.com>
Subject: [amsat-bb] Re: Best HT's for sats?
To: "Bill Dzurilla" <billdz.geo(AT)yahoo.com>, <amsat-bb(AT)AMSAT.Org>
Message-ID: <C50815459A9A4F39B956ADCCDC20B571(AT)Andrewlaptop>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Bill,
The 530 lets you select one band as the transmit band, and the other as the
band that the dial tunes. Simply set the 2m side to the 2m uplink, the 70cm
to the downlink + expected doppler shift, set the sub band tune to tune the
70cm side, and then when you push the ptt it will transmit on 2m. The only
thing you'll need to touch during the pass is the main tuning knob, and the
PTT. This feature is only on the 530, on the 470 you have to swap bands,
tune, then swap back before transmitting. With the 470 figure on doing this
5 times on a long pass, and I was always able to do it with one hand, even
with gloves standing knee deep in snow in South Dakota.
To answer an earlier question (or to not answer it) I've never had the need
or desire to operate a full duplex rig where the receive band mutes on tx.
There are cheap earphones that work for full duplex just about everywhere. I
still use a pair I picked up for free from JetBlue two years ago. If I'm
doing a demo where I want others to hear, like at a hamfest, I have an
extension speaker from MFJ (read CHEAP) that I screwed a belt clip from an
old cell phone onto, so that it clips to the back of my belt facing the
other way from me. This and careful volume control will normally prevent it
from squealing due to feedback.
Think about this...full duplex means you can tweak your antenna orientation
WHILE transmitting for max signal. All the FM microsats use a single whip
for receive, meaning a linear yagi like the Arrow will have ~20db!!! of
variation on the uplink due to cross polarization. If on your next
dxpedition, would you bring along a 500w amp if it only had the size and
weight of a pair of earbud headphones?
73, Drew KO4MA
----- Original Message -----
From: "Bill Dzurilla" <billdz.geo(AT)yahoo.com>
To: <amsat-bb(AT)amsat.org>
Sent: Friday, April 04, 2008 8:20 PM
Subject: [amsat-bb] Re: Best HT's for sats?
You mean you have to switch to the receive VFO and
then switch back to the uplink VFO every time we
need to make a Doppler correction? It's not cold here
in Florida, but I can sure see how that would be
annoying. Andrew said the FT-530 has a "subband
tune function," what about that?
73, Bill
> --- Dan O'Barr <kl7dr(AT)yahoo.com> wrote:
>
> > Hi Rafael and Bill,
> >
> > That's the issue with the FT-530, and it's the
> same
> > with the Alinco DJ-580.
> > They are both very good radios for full duplex. If
> > you are in a warm climate,
> > and do not have to wear gloves, then all the
> button
> > pushing to change back and
> > forth between VHF for transmitting and then to UHF
> > for receiving and changing
> > frequencies for Doppler, then it's no big deal.
> > However, up here the ability to
> > just program 5 spit channels, like the VX-7R,
> makes
> > it a lot easier to work a
> > pass. I believe the FT-51 has the capability of
> > working full duplex with a
> > setting that allows the operator to transmit on
> one
> > band and receive and tune
> > on the other.
______________________________________________________________________________
______
You rock. That's why Blockbuster's offering you one month of Blockbuster
Total Access, No Cost.
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Message: 15
Date: Fri, 4 Apr 2008 22:38:05 -0400
From: "Michael A. Tondee" <mat_62(AT)netcommander.com>
Subject: [amsat-bb] Re: cross boom?
To: <amsat-bb(AT)amsat.org>
Message-ID: <009401c896c6$13e0f4e0$6500a8c0(AT)w4hij>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
I used schedule 80 PVC with a large wooden dowel pushed inside for added
rigidity. I sealed each end with epoxy. It's been going strong for a couple
of years now. I saw your other post about antennas. At present I'm using a
four element 2 meter beam and an 11 element 70cm beam in vertical
polarization. Both are homebrewed using Ken Britain's "cheap yagi" design.
73,
Michael, W4HIJ
----- Original Message -----
From: <w0dxz(AT)aol.com>
To: <amsat-bb(AT)amsat.org>
Sent: Friday, April 04, 2008 10:36 AM
Subject: [amsat-bb] cross boom?
> In putting together my antenna,?? (144-432)I need something to use as a
> horizontal- cross? support boom. What would be the best length, and,? what
> would be the minimum length,,,? would 6? ft separation be OK?? To minimize
> problems, should I mount one beam horizontal, one vertical? Does it matter
> which one, is? which way?
>
> I doubt I can find a fiberglas boom locally,,,? what else could I use??
> or, where can I order a fiberglas boom?
>
> thanks
> Bob W0DXZ
> _______________________________________________
> 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
>
>
> --
> No virus found in this incoming message.
> Checked by AVG.
> Version: 7.5.519 / Virus Database: 269.22.6/1360 - Release Date: 4/4/2008
> 6:02 PM
------------------------------
Message: 16
Date: Fri, 04 Apr 2008 20:50:30 -0800
From: Edward Cole <kl7uw(AT)acsalaska.net>
Subject: [amsat-bb] Re: cross boom?
To: "Michael A. Tondee" <mat_62(AT)netcommander.com>,
<amsat-bb(AT)amsat.org>
Message-ID: <200804050450.m354ocke082816(AT)malik.acsalaska.net>
Content-Type: text/plain; charset="us-ascii"; format=flowed
If you are using linearly polarized yagis, just mount each vertical
and separate horizontally about 5-6 feet using an aluminum
crossboom. There is no need for non-metallic boom if the crossboom
is perpendicular to the plane of polarization. Ideally, the
separation would be so that the field of neither antenna were to
touch, but practical separation of the field of the higher frequency
antenna is sufficient. If you get cross-talk between VHF and UHF it
may be and advantage to have one antenna place in the opposite
polarization. Then mount each on a 45-degree slant \-----/
I use two x-yagis mounte on metallic crossboom. The antennas are
mounted in an X----X configuration and both are RHCP with no problem
of cross-talk using up to 50w. Preamps are used with both antennas
so either mode-UV or VU may be used. My crossboom is about 6-foot
long and both antennas have about 18-foot booms.
73 Ed - KL7UW
http://www.kl7uw.com/sat.htm
for pictures
At 06:38 PM 4/4/2008, Michael A. Tondee wrote:
>I used schedule 80 PVC with a large wooden dowel pushed inside for added
>rigidity. I sealed each end with epoxy. It's been going strong for a couple
>of years now. I saw your other post about antennas. At present I'm using a
>four element 2 meter beam and an 11 element 70cm beam in vertical
>polarization. Both are homebrewed using Ken Britain's "cheap yagi" design.
>73,
>Michael, W4HIJ
>----- Original Message -----
>From: <w0dxz(AT)aol.com>
>To: <amsat-bb(AT)amsat.org>
>Sent: Friday, April 04, 2008 10:36 AM
>Subject: [amsat-bb] cross boom?
>
>
> > In putting together my antenna,?? (144-432)I need something to use as a
> > horizontal- cross? support boom. What would be the best length, and,? what
> > would be the minimum length,,,? would 6? ft separation be OK?? To minimize
> > problems, should I mount one beam horizontal, one vertical? Does it matter
> > which one, is? which way?
> >
> > I doubt I can find a fiberglas boom locally,,,? what else could I use??
> > or, where can I order a fiberglas boom?
> >
> > thanks
> > Bob W0DXZ
> > _______________________________________________
> > 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
> >
> >
> > --
> > No virus found in this incoming message.
> > Checked by AVG.
> > Version: 7.5.519 / Virus Database: 269.22.6/1360 - Release Date: 4/4/2008
> > 6:02 PM
> >
> >
>
>_______________________________________________
>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.
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End of AMSAT-BB Digest, Vol 3, Issue 170
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