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CX2SA > SATDIG 07.10.20 01:30l 850 Lines 30832 Bytes #999 (0) @ WW
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Sent: 201006/2300Z @:CX2SA.SAL.URY.SOAM #:41128 [Salto] FBB7.00e $:AMSATBB15402
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: Fox Telemetry antenna? (Bob Hammond)
2. Fox Telemetry antenna? (Stephen DeVience)
3. Re: Fox Telemetry antenna? (Hasan N0AN)
4. Re: Fox Telemetry antenna? (Gary)
5. Re: Fox Telemetry antenna? (Stephen E. Belter)
6. Re: Fox Telemetry antenna? (Kevin)
7. Re: Fox Telemetry antenna? (Mark L. Hammond)
8. Re: Fox Telemetry antenna? (Mark L. Hammond)
----------------------------------------------------------------------
Message: 1
Date: Tue, 6 Oct 2020 13:59:30 -0700
From: Bob Hammond <propgrinder@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Fox Telemetry antenna?
Message-ID:
<CAKoB7Oqir+VdkiiJCM5iMDazoTL+eERAntorA+fy3DdSfe-6pA@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
So, can I just park my LEO antennas south just a bit above the horizon for
dedicated telemetry collection when not using them for sat ops?
Bob W7OTJ
On Tue, Oct 6, 2020 at 1:49 PM Stephen E. Belter via AMSAT-BB <
amsat-bb@?????.???> wrote:
> Kevin,
>
> I'm in West Lafayette, Indiana, so no salt water. My antennas are
> M-squared medium size antennas, 2MCP14 and 436CP30 with polarity switches,
> so not overloaded.
>
> Mark N8MH, has had similar experience with his Yaesu's. Since he is a
> dedicated telemetry collector like you, and since he is a control operator
> for the Fox satellites, he replaces his rotors when they fail. He had a
> volunteer to repair his broken rotors, so I transported 6-8 rotors from his
> garage in North Carolina (not near salt water either) to Indiana. Half
> were elevation rotors, half were azimuth rotors. I thought I was just
> having bad luck until Mark shared his experience.
>
> The last time mine failed, it was the azimuth rotor. Pointing the Yagis
> south just above the horizon worked a little better (long term) than an
> omnidirectional antenna. Since it failed while I was on a 3 month trip, I
> couldn't replace the rotor.
>
> I still recommend the G5500 rotors for normal operators, but they may not
> be the best choice for 24x7x365 telemetry collection. (I'm glad they work
> for you in that mode.) I've since switched to an AlphaSpid rotor with a
> Green Heron controller. You can buy the AlphaSpid rotors without the
> controller (my recommendation for heavy duty use) and use a Green Heron
> instead.
>
> Still: YMMV
>
> 73, Steve N9IP
> --
> Steve Belter, seb@??????.???
>
>
> ?On 10/6/20, 3:53 PM, "AMSAT-BB on behalf of Kevin via AMSAT-BB" <
> amsat-bb-bounces@?????.??? on behalf of amsat-bb@?????.???> wrote:
>
> Steve,
> What are you doing that is wearing it out in 4-8 months?
> overloaded?
> near the ocean with salt? something has to be wrong as mine go for
> years.
>
> 73 Kevin WA7FWF
>
> On 10/6/2020 10:21 AM, Stephen E. Belter via AMSAT-BB wrote:
> > Roy,
> >
> > In my experience, using the CP antennas with the G5500 will help you
> collect and decode about 4-6 times more packets than an omnidirectional
> antenna.
> >
> > But tracking the Fox satellites using the Yaesu rotors will wear out
> the rotors in 4-8 months. Replacement rotors are about $250 each (you won?t
> need to replace the controller).
> >
> > YMMV
> >
> > 73, Steve N9IP
> > --
> > Steve Belter, seb@??????.???
> >
> >
> >
>
> _______________________________________________
> Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership.
> Opinions expressed
> are solely those of the author, and do not reflect the official views
> of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite
> program!
> Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
>
> _______________________________________________
> Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
> expressed
> are solely those of the author, and do not reflect the official views of
> AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 2
Date: Tue, 6 Oct 2020 17:00:16 -0400
From: Stephen DeVience <sjdevience@?????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] Fox Telemetry antenna?
Message-ID:
<CAMPfQQBWuvPusW0WEQ9NsvTeixYksYypy4WZBk8Oa0=XFb3_cQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
During my time in Chicago, I collected telemetry with a QFH (no preamp)
that was actually designed for the NOAA satellites. It did an OK job but
wasn't going to put me on top of the leaderboard. A Lindenblad would
probably be better for the lower passes.
You could probably make a phased array of either type if you wanted.
-Stephen
N8URE
------------------------------
Message: 3
Date: Tue, 6 Oct 2020 16:18:54 -0500
From: Hasan N0AN <hbasri.schiers6@?????.???>
To: Bob Hammond <propgrinder@?????.???>
Cc: AMSAT-BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Fox Telemetry antenna?
Message-ID:
<CAM4UQf2YLDr25EQ7L=VL_rd7uYvR8fuSo3fREw909SwOO28LOQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Bob,
It really depends on how much wear and tear your rotor will put up with.
I use an interlaced 2/70cm yagi with fixed uptilt of 15 deg for capturing
TLM and am doing very well. I am using only an azimuth rotor, the Yaesu
G-1000DXA, with computer control. It runs 24/7 and I have had no issues
with it running it a couple years like this.
I also have a pair of M2 EggBeaters that work reasonably well, but not
nearly as well as the interlaced yagi (5 EL 2m, 8 EL 70cm)
I am running SDRC v3 software on a FunCube Pro+ SDR Dongle with a GASFET
preamp in front of it, and the software schedules all the passes and not
only switches satellites, but also points the rotor. All I need do is leave
the 4 TLM programs running and everything is automatic.
73, N0AN
Hasan
On Tue, Oct 6, 2020 at 11:25 AM Bob Hammond via AMSAT-BB <amsat-bb@?????.???>
wrote:
> I'm going to get set up to monitor Fox telemetry. For those of you who
> already do so, what antenna are you using?
>
> I'm set up with 2M, 70cm, and 23cm CP antennas on a G5500 rotator but I
> understand I can also use a fixed antenna such as a Lindenblad or
> quadrifilar. Suggestions?
>
> Bob W7OTJ
> _______________________________________________
> Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
> expressed
> are solely those of the author, and do not reflect the official views of
> AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 4
Date: Tue, 6 Oct 2020 22:18:17 +0000
From: Gary <gary_mayfield@???????.???>
To: Bob Hammond <propgrinder@?????.???>, "AMSAT-BB@?????.????
<AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] Fox Telemetry antenna?
Message-ID:
<CH2PR13MB38642928692923594E1B68058A0D0@?????????????.????????.????.???????.??
?>
Content-Type: text/plain; charset="utf-8"
I am curious do they stop turning or do they quit indicating?
The Alpha Spid looks cool and reliable, but at a completely different price
point.
Thanks and 73,
Gary "Joe" kk0sd
-----Original Message-----
From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Bob Hammond via
AMSAT-BB
Sent: Tuesday, October 6, 2020 4:00 PM
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Fox Telemetry antenna?
So, can I just park my LEO antennas south just a bit above the horizon for
dedicated telemetry collection when not using them for sat ops?
Bob W7OTJ
On Tue, Oct 6, 2020 at 1:49 PM Stephen E. Belter via AMSAT-BB <
amsat-bb@?????.???> wrote:
> Kevin,
>
> I'm in West Lafayette, Indiana, so no salt water. My antennas are
> M-squared medium size antennas, 2MCP14 and 436CP30 with polarity
> switches, so not overloaded.
>
> Mark N8MH, has had similar experience with his Yaesu's. Since he is a
> dedicated telemetry collector like you, and since he is a control
> operator for the Fox satellites, he replaces his rotors when they
> fail. He had a volunteer to repair his broken rotors, so I
> transported 6-8 rotors from his garage in North Carolina (not near
> salt water either) to Indiana. Half were elevation rotors, half were
> azimuth rotors. I thought I was just having bad luck until Mark shared
his experience.
>
> The last time mine failed, it was the azimuth rotor. Pointing the
> Yagis south just above the horizon worked a little better (long term)
> than an omnidirectional antenna. Since it failed while I was on a 3
> month trip, I couldn't replace the rotor.
>
> I still recommend the G5500 rotors for normal operators, but they may
> not be the best choice for 24x7x365 telemetry collection. (I'm glad
> they work for you in that mode.) I've since switched to an AlphaSpid
> rotor with a Green Heron controller. You can buy the AlphaSpid rotors
> without the controller (my recommendation for heavy duty use) and use
> a Green Heron instead.
>
> Still: YMMV
>
> 73, Steve N9IP
> --
> Steve Belter, seb@??????.???
>
>
> ?On 10/6/20, 3:53 PM, "AMSAT-BB on behalf of Kevin via AMSAT-BB" <
> amsat-bb-bounces@?????.??? on behalf of amsat-bb@?????.???> wrote:
>
> Steve,
> What are you doing that is wearing it out in 4-8 months?
> overloaded?
> near the ocean with salt? something has to be wrong as mine go for
> years.
>
> 73 Kevin WA7FWF
>
> On 10/6/2020 10:21 AM, Stephen E. Belter via AMSAT-BB wrote:
> > Roy,
> >
> > In my experience, using the CP antennas with the G5500 will help
> you collect and decode about 4-6 times more packets than an
> omnidirectional antenna.
> >
> > But tracking the Fox satellites using the Yaesu rotors will wear
> out the rotors in 4-8 months. Replacement rotors are about $250 each
> (you won?t need to replace the controller).
> >
> > YMMV
> >
> > 73, Steve N9IP
> > --
> > Steve Belter, seb@??????.???
> >
> >
> >
>
> _______________________________________________
> Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership.
> Opinions expressed
> are solely those of the author, and do not reflect the official
> views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite
> program!
> Subscription settings:
> https://www.amsat.org/mailman/listinfo/amsat-bb
>
> _______________________________________________
> Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership.
> Opinions expressed are solely those of the author, and do not reflect
> the official views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
>
_______________________________________________
Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available to all
interested persons worldwide without requiring membership. Opinions
expressed are solely those of the author, and do not reflect the official
views of AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 5
Date: Tue, 6 Oct 2020 21:54:01 +0000
From: "Stephen E. Belter" <seb@??????.???>
To: Bob Hammond <propgrinder@?????.???>, "amsat-bb@?????.????
<amsat-bb@?????.???>
Subject: Re: [amsat-bb] Fox Telemetry antenna?
Message-ID: <FF43C110-0929-4C9D-9B6B-14ED6D000E6B@??????.???>
Content-Type: text/plain; charset="utf-8"
Bob,
From my experience, yes, you could park your LEO Pack Yagi's (or other
directional antenna) and decode a few more packets that using an
omnidirectional antenna. Since the LEO Pack has a broader beamwidth than
higher gain antennas, I would expect it to do well for telemetry for
satellite passes go south of you. You should decode more of the packets
than an omni, but much fewer than a directional antenna that tracks each
satellite across the sky.
But you won't wear out your rotors.
YMMV
73, Steve N9IP
--
Steve Belter, seb@??????.???
?On 10/6/20, 5:41 PM, "AMSAT-BB on behalf of Bob Hammond via AMSAT-BB"
<amsat-bb-bounces@?????.??? on behalf of amsat-bb@?????.???> wrote:
So, can I just park my LEO antennas south just a bit above the horizon for
dedicated telemetry collection when not using them for sat ops?
Bob W7OTJ
On Tue, Oct 6, 2020 at 1:49 PM Stephen E. Belter via AMSAT-BB <
amsat-bb@?????.???> wrote:
> Kevin,
>
> I'm in West Lafayette, Indiana, so no salt water. My antennas are
> M-squared medium size antennas, 2MCP14 and 436CP30 with polarity
switches,
> so not overloaded.
>
> Mark N8MH, has had similar experience with his Yaesu's. Since he is a
> dedicated telemetry collector like you, and since he is a control
operator
> for the Fox satellites, he replaces his rotors when they fail. He had a
> volunteer to repair his broken rotors, so I transported 6-8 rotors
from his
> garage in North Carolina (not near salt water either) to Indiana. Half
> were elevation rotors, half were azimuth rotors. I thought I was just
> having bad luck until Mark shared his experience.
>
> The last time mine failed, it was the azimuth rotor. Pointing the Yagis
> south just above the horizon worked a little better (long term) than an
> omnidirectional antenna. Since it failed while I was on a 3 month
trip, I
> couldn't replace the rotor.
>
> I still recommend the G5500 rotors for normal operators, but they may
not
> be the best choice for 24x7x365 telemetry collection. (I'm glad they
work
> for you in that mode.) I've since switched to an AlphaSpid rotor with a
> Green Heron controller. You can buy the AlphaSpid rotors without the
> controller (my recommendation for heavy duty use) and use a Green Heron
> instead.
>
> Still: YMMV
>
> 73, Steve N9IP
> --
> Steve Belter, seb@??????.???
>
>
> On 10/6/20, 3:53 PM, "AMSAT-BB on behalf of Kevin via AMSAT-BB" <
> amsat-bb-bounces@?????.??? on behalf of amsat-bb@?????.???> wrote:
>
> Steve,
> What are you doing that is wearing it out in 4-8 months?
> overloaded?
> near the ocean with salt? something has to be wrong as mine go for
> years.
>
> 73 Kevin WA7FWF
>
> On 10/6/2020 10:21 AM, Stephen E. Belter via AMSAT-BB wrote:
> > Roy,
> >
> > In my experience, using the CP antennas with the G5500 will help
you
> collect and decode about 4-6 times more packets than an omnidirectional
> antenna.
> >
> > But tracking the Fox satellites using the Yaesu rotors will wear
out
> the rotors in 4-8 months. Replacement rotors are about $250 each (you
won?t
> need to replace the controller).
> >
> > YMMV
> >
> > 73, Steve N9IP
> > --
> > Steve Belter, seb@??????.???
> >
> >
> >
>
> _______________________________________________
> Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum
available
> to all interested persons worldwide without requiring membership.
> Opinions expressed
> are solely those of the author, and do not reflect the official
views
> of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite
> program!
> Subscription settings:
https://www.amsat.org/mailman/listinfo/amsat-bb
>
> _______________________________________________
> Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership.
Opinions
> expressed
> are solely those of the author, and do not reflect the official views of
> AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite
program!
> Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
>
_______________________________________________
Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available
to all interested persons worldwide without requiring membership.
Opinions expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 6
Date: Tue, 6 Oct 2020 15:04:43 -0700
From: Kevin <wa7fwf@?????.???>
To: "Stephen E. Belter" <seb@??????.???>, "amsat-bb@?????.????
<amsat-bb@?????.???>
Subject: Re: [amsat-bb] Fox Telemetry antenna?
Message-ID: <fbe9e4a5-39ac-92de-6898-68fa4f637ac6@?????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
Steve,
??? I run the same antennas here, maybe something I do to my rotors
make a difference.
? I clean and grease them with a marine grease, the old wire on the
slider style pots have been replaced with the newer style closed back
ones, I added thermal switches to the inside of the motors so if
something snags they shutoff rather than burn up, an interesting note is
that it looks like Yaesu had planned for a cutout as the pc board inside
the motor has a spot where you move one wire and then there are two
holes that line up perfectly with a spot to slip the cutout into the
motor and solder to the board, I also Loctite the drive screws.
?For me when they do finally fail it is the pot that gets erratic, a
new pot and re-grease and away they go.
? If yours were dying every 4-8 months I can see where spending the
bucks for the Spid makes perfect sense, It's also possible you guys
track way more sats than I do, with AO-92 going dark I only track 4 sats
on a daily basis now.
73, Kevin WA7FWF
On 10/6/2020 1:29 PM, Stephen E. Belter wrote:
> Kevin,
>
> I'm in West Lafayette, Indiana, so no salt water. My antennas are
M-squared medium size antennas, 2MCP14 and 436CP30 with polarity switches,
so not overloaded.
>
> Mark N8MH, has had similar experience with his Yaesu's. Since he is a
dedicated telemetry collector like you, and since he is a control operator
for the Fox satellites, he replaces his rotors when they fail. He had a
volunteer to repair his broken rotors, so I transported 6-8 rotors from his
garage in North Carolina (not near salt water either) to Indiana. Half were
elevation rotors, half were azimuth rotors. I thought I was just having bad
luck until Mark shared his experience.
>
> The last time mine failed, it was the azimuth rotor. Pointing the Yagis
south just above the horizon worked a little better (long term) than an
omnidirectional antenna. Since it failed while I was on a 3 month trip, I
couldn't replace the rotor.
>
> I still recommend the G5500 rotors for normal operators, but they may not
be the best choice for 24x7x365 telemetry collection. (I'm glad they work
for you in that mode.) I've since switched to an AlphaSpid rotor with a
Green Heron controller. You can buy the AlphaSpid rotors without the
controller (my recommendation for heavy duty use) and use a Green Heron
instead.
>
> Still: YMMV
>
> 73, Steve N9IP
------------------------------
Message: 7
Date: Tue, 6 Oct 2020 18:30:00 -0400
From: "Mark L. Hammond" <marklhammond@?????.???>
To: Bob Hammond <propgrinder@?????.???>
Cc: Amsat - BBs <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Fox Telemetry antenna?
Message-ID:
<CAPRXzyoGfHPb+VVPwZiWOc=4D3Kni_mo7r0W0s1GRs19if3rmA@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Hi Bob, I have found that a parked yagi yields more telemetry than an
omini. And for a Fox satellite, pointing N or S works pretty well; pick
the better horizon/less obstruction view!
Mark L. Hammond [N8MH]
AMSAT Director and Command Station
On Tue, Oct 6, 2020 at 5:39 PM Bob Hammond via AMSAT-BB <amsat-bb@?????.???>
wrote:
> So, can I just park my LEO antennas south just a bit above the horizon for
> dedicated telemetry collection when not using them for sat ops?
>
> Bob W7OTJ
>
> On Tue, Oct 6, 2020 at 1:49 PM Stephen E. Belter via AMSAT-BB <
> amsat-bb@?????.???> wrote:
>
> > Kevin,
> >
> > I'm in West Lafayette, Indiana, so no salt water. My antennas are
> > M-squared medium size antennas, 2MCP14 and 436CP30 with polarity
> switches,
> > so not overloaded.
> >
> > Mark N8MH, has had similar experience with his Yaesu's. Since he is a
> > dedicated telemetry collector like you, and since he is a control
> operator
> > for the Fox satellites, he replaces his rotors when they fail. He had a
> > volunteer to repair his broken rotors, so I transported 6-8 rotors from
> his
> > garage in North Carolina (not near salt water either) to Indiana. Half
> > were elevation rotors, half were azimuth rotors. I thought I was just
> > having bad luck until Mark shared his experience.
> >
> > The last time mine failed, it was the azimuth rotor. Pointing the Yagis
> > south just above the horizon worked a little better (long term) than an
> > omnidirectional antenna. Since it failed while I was on a 3 month trip,
> I
> > couldn't replace the rotor.
> >
> > I still recommend the G5500 rotors for normal operators, but they may not
> > be the best choice for 24x7x365 telemetry collection. (I'm glad they
> work
> > for you in that mode.) I've since switched to an AlphaSpid rotor with a
> > Green Heron controller. You can buy the AlphaSpid rotors without the
> > controller (my recommendation for heavy duty use) and use a Green Heron
> > instead.
> >
> > Still: YMMV
> >
> > 73, Steve N9IP
> > --
> > Steve Belter, seb@??????.???
> >
> >
> > ?On 10/6/20, 3:53 PM, "AMSAT-BB on behalf of Kevin via AMSAT-BB" <
> > amsat-bb-bounces@?????.??? on behalf of amsat-bb@?????.???> wrote:
> >
> > Steve,
> > What are you doing that is wearing it out in 4-8 months?
> > overloaded?
> > near the ocean with salt? something has to be wrong as mine go for
> > years.
> >
> > 73 Kevin WA7FWF
> >
> > On 10/6/2020 10:21 AM, Stephen E. Belter via AMSAT-BB wrote:
> > > Roy,
> > >
> > > In my experience, using the CP antennas with the G5500 will help
> you
> > collect and decode about 4-6 times more packets than an omnidirectional
> > antenna.
> > >
> > > But tracking the Fox satellites using the Yaesu rotors will wear
> out
> > the rotors in 4-8 months. Replacement rotors are about $250 each (you
> won?t
> > need to replace the controller).
> > >
> > > YMMV
> > >
> > > 73, Steve N9IP
> > > --
> > > Steve Belter, seb@??????.???
> > >
> > >
> > >
> >
> > _______________________________________________
> > Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum
> available
> > to all interested persons worldwide without requiring membership.
> > Opinions expressed
> > are solely those of the author, and do not reflect the official views
> > of AMSAT-NA.
> > Not an AMSAT-NA member? Join now to support the amateur satellite
> > program!
> > Subscription settings:
> https://www.amsat.org/mailman/listinfo/amsat-bb
> >
> > _______________________________________________
> > Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available
> > to all interested persons worldwide without requiring membership.
> Opinions
> > expressed
> > are solely those of the author, and do not reflect the official views of
> > AMSAT-NA.
> > Not an AMSAT-NA member? Join now to support the amateur satellite
> program!
> > Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
> >
> _______________________________________________
> Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
> expressed
> are solely those of the author, and do not reflect the official views of
> AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 8
Date: Tue, 6 Oct 2020 18:36:49 -0400
From: "Mark L. Hammond" <marklhammond@?????.???>
To: Gary <gary_mayfield@???????.???>
Cc: "AMSAT-BB@?????.???? <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] Fox Telemetry antenna?
Message-ID:
<CAPRXzypCy7_RYC+zwX=m0VKBX+UZ285sOrdqG2ASH-SU76Ko+A@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Rotor/coax snags, then burned out motor. Or just a burned out motor.
That's been the most common problem for me. Stops turning...
Mark L. Hammond [N8MH]
AMSAT Director and Command Station
On Tue, Oct 6, 2020 at 6:28 PM Gary via AMSAT-BB <amsat-bb@?????.???> wrote:
> I am curious do they stop turning or do they quit indicating?
>
> The Alpha Spid looks cool and reliable, but at a completely different
> price point.
>
> Thanks and 73,
> Gary "Joe" kk0sd
>
> -----Original Message-----
> From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Bob Hammond via
> AMSAT-BB
> Sent: Tuesday, October 6, 2020 4:00 PM
> To: amsat-bb@?????.???
> Subject: Re: [amsat-bb] Fox Telemetry antenna?
>
> So, can I just park my LEO antennas south just a bit above the horizon for
> dedicated telemetry collection when not using them for sat ops?
>
> Bob W7OTJ
>
> On Tue, Oct 6, 2020 at 1:49 PM Stephen E. Belter via AMSAT-BB <
> amsat-bb@?????.???> wrote:
>
> > Kevin,
> >
> > I'm in West Lafayette, Indiana, so no salt water. My antennas are
> > M-squared medium size antennas, 2MCP14 and 436CP30 with polarity
> > switches, so not overloaded.
> >
> > Mark N8MH, has had similar experience with his Yaesu's. Since he is a
> > dedicated telemetry collector like you, and since he is a control
> > operator for the Fox satellites, he replaces his rotors when they
> > fail. He had a volunteer to repair his broken rotors, so I
> > transported 6-8 rotors from his garage in North Carolina (not near
> > salt water either) to Indiana. Half were elevation rotors, half were
> > azimuth rotors. I thought I was just having bad luck until Mark shared
> his experience.
> >
> > The last time mine failed, it was the azimuth rotor. Pointing the
> > Yagis south just above the horizon worked a little better (long term)
> > than an omnidirectional antenna. Since it failed while I was on a 3
> > month trip, I couldn't replace the rotor.
> >
> > I still recommend the G5500 rotors for normal operators, but they may
> > not be the best choice for 24x7x365 telemetry collection. (I'm glad
> > they work for you in that mode.) I've since switched to an AlphaSpid
> > rotor with a Green Heron controller. You can buy the AlphaSpid rotors
> > without the controller (my recommendation for heavy duty use) and use
> > a Green Heron instead.
> >
> > Still: YMMV
> >
> > 73, Steve N9IP
> > --
> > Steve Belter, seb@??????.???
> >
> >
> > ?On 10/6/20, 3:53 PM, "AMSAT-BB on behalf of Kevin via AMSAT-BB" <
> > amsat-bb-bounces@?????.??? on behalf of amsat-bb@?????.???> wrote:
> >
> > Steve,
> > What are you doing that is wearing it out in 4-8 months?
> > overloaded?
> > near the ocean with salt? something has to be wrong as mine go for
> > years.
> >
> > 73 Kevin WA7FWF
> >
> > On 10/6/2020 10:21 AM, Stephen E. Belter via AMSAT-BB wrote:
> > > Roy,
> > >
> > > In my experience, using the CP antennas with the G5500 will help
> > you collect and decode about 4-6 times more packets than an
> > omnidirectional antenna.
> > >
> > > But tracking the Fox satellites using the Yaesu rotors will wear
> > out the rotors in 4-8 months. Replacement rotors are about $250 each
> > (you won?t need to replace the controller).
> > >
> > > YMMV
> > >
> > > 73, Steve N9IP
> > > --
> > > Steve Belter, seb@??????.???
> > >
> > >
> > >
> >
> > _______________________________________________
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> >
> > _______________________________________________
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> >
> _______________________________________________
> Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available to
> all interested persons worldwide without requiring membership. Opinions
> expressed are solely those of the author, and do not reflect the official
> views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
> _______________________________________________
> Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
> expressed
> are solely those of the author, and do not reflect the official views of
> AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
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------------------------------
Subject: Digest Footer
_______________________________________________
Sent via amsat-bb@?????.???.
AMSAT-NA makes this open forum available to all interested persons worldwide
without requiring membership. Opinions expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
Not an AMSAT member? Join now to support the amateur satellite program!
https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
End of AMSAT-BB Digest, Vol 15, Issue 402
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