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CX2SA > SATDIG 12.12.18 17:07l 752 Lines 26362 Bytes #999 (0) @ WW
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Sent: 181212/1459Z @:CX2SA.SAL.URY.SOAM #:59987 [Salto] FBB7.00e $:AMSATBB13415
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. AO-73 Telemetry (Greg Walls)
2. Re: new JY1SAT / Jordan-OSCAR 97 TLEs (Nico Janssen)
3. Re: AO-73 Telemeter (Hasan al-Basri)
4. Re: FoxTelem Program & RTL820T Dongles (Hasan al-Basri)
5. Re: Fox in a Box Question (Burns Fisher)
6. Re: Fox in a Box Question (Doug Phelps)
7. AO-7 (Meeko Kittika)
8. Re: AO-7 (Peter Goodhall)
9. Re: AO-7 (Ron VE8RT)
10. Re: AO-7 (Hans BX2ABT)
11. Comet Wirtanen (Bill Booth)
12. VHF/UHF/SHF Antenna book recommendations? (Bob Hammond)
----------------------------------------------------------------------
Message: 1
Date: Tue, 11 Dec 2018 16:41:23 -0500
From: "Greg Walls" <gwalls@?????.???>
To: "'AMSAT'" <AMSAT-BB@?????.???>
Subject: [amsat-bb] AO-73 Telemetry
Message-ID: <03cd01d4919a$45039200$cf0ab600$@?????.???>
Content-Type: text/plain; charset="us-ascii"
I copied my first telemetry from FunCube 1 back in 2016 and copied it for
several months, on and off. Then I got interested in other things and didn't
copy it for a while. Now I am back and have an anomaly that I would like to
have some advice on.
For the last few months I have not been very successful in copying
telemetry. I seem to be getting good signals with a M2 2MCP22 controlled in
AZ and EL. I use an Icom IC-910H for the receiver. I could not get dashboard
to reliably auto tune. I use HRD Satellite to tune the rig for doppler set
to 145.935. If I set the rig to USB, I don't copy anything. So just playing
around I tried CW and can hear the data but still not copy. Then I tried
adjusting the RIT and I stated copying. I only adjusted the RIT -0.65.
Should I go back to USB and adjust the frequency to find the signal?
Has the satellite changed from 145.935 or is it something here?
Thanks for your input!
73
Greg
W4GHW
------------------------------
Message: 2
Date: Tue, 11 Dec 2018 22:41:32 +0100
From: Nico Janssen <hamsat@??????.??>
To: Wouter Weggelaar <wouterweg@?????.???>, AMSAT-BB
<amsat-bb@?????.???>
Subject: Re: [amsat-bb] new JY1SAT / Jordan-OSCAR 97 TLEs
Message-ID: <ef7e82f7-04d8-48a4-0cdb-21f567457223@??????.??>
Content-Type: text/plain; charset=utf-8; format=flowed
Wouter,
With the new TLEs available I find that the best fit for JO 97 is now
object 43803.
But separation from object 43801 is only 2 s.
73, Nico
On 11-12-18 17:42, Wouter Weggelaar wrote:
> Hi All,
>
> New TLEs have been released by CSpOC, and currently we are looking at
> object 2018-099AV / 43801 for JY1Sat.
> Very close are also objects AX and AY, but the coming passes will show
> which one may produce a good fit.
>
> *note* the objects have not yet been assigned, so AV is still our best
> estimate. More observations are needed to confirm or amend.
>
> 73
>
> Wouter PA3WEG
> _______________________________________________
> 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: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 3
Date: Tue, 11 Dec 2018 15:53:47 -0600
From: Hasan al-Basri <hbasri.schiers6@?????.???>
To: gwalls@?????.???
Cc: AMSAT-BB@?????.???
Subject: Re: [amsat-bb] AO-73 Telemeter
Message-ID:
<CAM4UQf3R+t_ryNy2zgKR=52enudbqYjJQmCeHLMiOn1aOgb8-A@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
I get the best centered decodes on the SDR at 145.933.200
That holds nicely with the doppler corrections being applied by SDR Console
v 3.03
Rx with M2 Eggbeater at 7' and get about 100 frames every decent pass..
I do many unattended passes and get TLM from AO-73 just fine.
73, N0AN
Hasan
On Tue, Dec 11, 2018 at 9:35 AM Greg <gwalls@?????.???> wrote:
> I copied my first telemetry from FunCube 1 back in 2016 and copied it for
> several months, on and off. Then I got interested in other things and
> didn't
> copy it for a while. Now I am back and have an anomaly that I would like to
> have some advice on.
>
>
>
> For the last few months I have not been very successful in copying
> telemetry. I seem to be getting good signals with a M2 2MCP22 controlled in
> AZ and EL. I use an Icom IC-910H for the receiver. I could not get
> dashboard
> to reliably auto tune. I use HRD Satellite to tune the rig for doppler set
> to 145.935. If I set the rig to USB, I don't copy anything. So just playing
> around I tried CW and can hear the data but still not copy. Then I tried
> adjusting the RIT and I stated copying. I only adjusted the RIT -0.65.
>
>
>
> Should I go back to USB and adjust the frequency to find the signal?
>
> Has the satellite changed from 145.935 or is it something here?
>
>
>
> Thanks for your input!
>
>
>
> 73
>
> Greg
>
> W4GHW
>
>
>
> _______________________________________________
> 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: http://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 4
Date: Tue, 11 Dec 2018 16:11:42 -0600
From: Hasan al-Basri <hbasri.schiers6@?????.???>
To: Burns Fisher <burns@??????.??>
Cc: amsat-bb@?????.???
Subject: Re: [amsat-bb] FoxTelem Program & RTL820T Dongles
Message-ID:
<CAM4UQf1va9rF4ZtxwJBzbZVMRAC7vKoQirizjW51RcteDhY20A@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
I am using an SDR with SDR Console v 3.03
It permits every receiver to set its own squelch. I feed the audio of each
rx to the decoding program.
It sits overnight and gets TLM from AO-85/91/92 because I have 3 rx running
at the same time with the SDR Console software.
SDRC v3 is windows only.
73, N0AN
Hasan
On Tue, Dec 11, 2018 at 3:22 PM Burns Fisher <burns@??????.??> wrote:
> Doug, Do you mean you are using a FunCube Dongle or something and having
> FoxTelem decode the RF (as opposed to feeding it audio). You can turn off
> the audio entirely by clicking on tab on the input section (just above the
> audio/FFT display) that says "Silence Audio". If that tab says "Monitor
> Audio" then it is already turned off. You can also monitor the audio and
> have it squelch when there is no telemetry being decoded using a checkbox
> on the side (Squelch when no telemetry" or something like that). If you
> mean to use this to listen to QSOs, remember that while you might be able
> to hear them sometimes, the ear is incredibly sensitive, so you might be
> squelching something you could actually hear and understand.
>
> On Tue, Dec 11, 2018 at 4:09 PM Doug Phelps via AMSAT-BB <
> amsat-bb@?????.???>
> wrote:
>
> > Sorry for the dumb question but how do I turn on the squelch in Fox
> > Telem? I would need to do this both on Windows and Linux (PI 3B+).
> >
> >
> > Sent with ProtonMail Secure Email.
> >
> > ??????? Original Message ???????
> > On Monday, December 10, 2018 5:01 PM, Hasan al-Basri <
> > hbasri.schiers6@?????.???> wrote:
> >
> > > Hi Bob,
> > >
> > > I have done that successfully with both an SDRPlay RSP2 and a FunCube
> > Pro +.
> > > Here is what I learned:
> > > You must run those FM rx with squelch on. In other words, set up each
> > SDRC
> > > rx with FM Squelch , Narrow Filters (12 kHz is fine).
> > >
> > > When I tried to run them unsquelched I got no decodes. Once squelched,
> > all
> > > decode fine if freq is clear (lots of junk on the downlink band from
> > > computer stuff)
> > >
> > > 73, N0AN
> > > Hasan
> > >
> > > On Sun, Dec 9, 2018 at 4:17 PM Bob KD7YZ kd7yz@???????????.?? wrote:
> > >
> > > > After reading the manual from FoxTelem, I decided to thy the 192KHz
> > wide
> > > > suggestion they made ... the intent being to use
> SDR-Console/Satellite
> > > > and the RTL820T Dongle.
> > > > SDRC/Satellite is unable to auto-switch to the next in a list of Sats
> > so
> > > > making a bandwidth big enough to take in the lower end of one to the
> > > > upper end of the others means, technically, 'set and forget' .
> > > > I never did understand though where the Find-Sat "switch" was. I was
> > > > hoping a strong signal somewhere in the bandwidth, which I could see
> > was
> > > > wide enough to cover the 4, would be enough to make the FoxTelem
> > > > program seek out the Sat and decode it.
> > > > I'd hoped to be able to activate the programs overnight and collect
> > from
> > > > 85 91 92 95 .
> > > > It didn't work out. Though in testing, I could visually see the
> > > > Telem/Signal come up.
> > > > So is anyone using this combo willing to give me some pointers?
> > > > Thanks
> > > > --
> > > > 73
> > > > Bob KD7YZ
> > > > AMSAT LM #901
> > > >
> > > > 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:
> http://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: http://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: http://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: http://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 5
Date: Tue, 11 Dec 2018 17:28:31 -0500
From: Burns Fisher <burns@??????.??>
To: DougPhelps@??????????.???
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Fox in a Box Question
Message-ID:
<CABX7KxVU9TF9wt5mt=mOv731fvtZYvQSHC7J8kSMRsHTOhUmAw@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Doug,
We'll have to wait for Chris to answer the question about compensating for
the I/Q offset (which is what gives the peak in the middle). I have not
had that trouble at all, so I assumed he did it automatically like SDR#
does. I use (and the FIAB should have the same offset if you downloaded
the image) 145930 as the center frequency. That makes all the Foxes appear
on one side or the other. I have found birdies in the spectrum, which I
think comes from ethernet switches around my house. Some are pretty close
to Fox frequencies. To work around that, I go to the Spacecraft menu and
chose the particular s/c that is too close to the noise and adjust the
lower and upper search bounds a bit to exclude the noise. I think at worst
I made high maybe 3 or 4KHz above the center, and I had no trouble at AOS.
I assume that you do have "track" enable so that it is only looking within
those bounds for a signal?
BTW, do you have a FunCube Dongle Pro Plus (it has a + in the center of the
O in the logo)? Chris has not had a FCD Pro (not plus) to fiddle with so
it may have a worse problem.
On Tue, Dec 11, 2018 at 4:08 PM Doug Phelps via AMSAT-BB <amsat-bb@?????.???>
wrote:
> I had no problem replicating the Fox in a Box. My 3B+ runs around 70% CPU
> when decoding white noise. I am having trouble receiving the satellites
> because of the Spike in the center of the passband as well as images to the
> side. Is there anyway to compensate for the offset voltage in LINUX that
> will run on the P! 3B+? Programs like HDSDR allow you to do the correction
> within the program but I cannot find where to do it in Fox Telem. There is
> a Funcube control program for Windows but I have not found one for the PI.
> According to the Fauncube site, alignment is required every time you loose
> power to the PI.
>
> Also, I presume that the internet interface for the leader board is not
> supported? When I click on leaderboard, I get a message that it is not
> supported but when I acknowledge the pop up, the web brouser launches. It
> does not seem to have this problem when sending or receiving data to the
> server. Is this normal.
>
> I you would like to call me, my number is 847-514-8566. Thank you for all
> of the work you put into the Fox in a Box. If I can fix the DC offset
> problems, I plan to deploy one to Denver, CO and another to McAllen TX.
>
> Sent with [ProtonMail](https://protonmail.com) Secure Email.
> _______________________________________________
> 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: http://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 6
Date: Tue, 11 Dec 2018 22:55:46 +0000
From: Doug Phelps <DougPhelps@??????????.???>
To: Burns Fisher <burns@??????.??>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Fox in a Box Question
Message-ID:
<CzhP0MBZdrubk9f4Y9keCaX6BqDyApCeYvpNaIiPDAanFQXG76X6qSP0y_hL0BbYhw-1MP4-dhOZf
NqBS66mzEtcO1ePFicJN_Z0olFKiPA=@??????????.???>
Content-Type: text/plain; charset=UTF-8
Yes, I have both the pro and the pro plus. I am using the pro plus because
the front end filtering is supposed to be better, With the Pro (not plus) I
still have the IQ offset but I do not have the left and right images.
Limiting the scan range is a good idea and I will try it. The IQ offset and
images, on the pro plus, show up on both the computer and the Raspberry PI.
I put multiple ferrites on all cables connected to the PI and shielded the
Pro Plus with aluminum foil connected to RF ground with no improvement. The
spikes are there when I terminate with a 50 ohm load. The spikes are
definitely coming out of the Funcube.
Finally, you are correct, I have track enabled and I downloaded the image.
Sent with [ProtonMail](https://protonmail.com) Secure Email.
??????? Original Message ???????
On Tuesday, December 11, 2018 4:28 PM, Burns Fisher <burns@??????.??> wrote:
> Doug,
>
> We'll have to wait for Chris to answer the question about compensating for
the I/Q offset (which is what gives the peak in the middle). I have not had
that trouble at all, so I assumed he did it automatically like SDR# does. I
use (and the FIAB should have the same offset if you downloaded the image)
145930 as the center frequency. That makes all the Foxes appear on one side
or the other. I have found birdies in the spectrum, which I think comes
from ethernet switches around my house. Some are pretty close to Fox
frequencies. To work around that, I go to the Spacecraft menu and chose the
particular s/c that is too close to the noise and adjust the lower and upper
search bounds a bit to exclude the noise. I think at worst I made high
maybe 3 or 4KHz above the center, and I had no trouble at AOS.
>
> I assume that you do have "track" enable so that it is only looking within
those bounds for a signal?
>
> BTW, do you have a FunCube Dongle Pro Plus (it has a + in the center of
the O in the logo)? Chris has not had a FCD Pro (not plus) to fiddle with
so it may have a worse problem.
>
> On Tue, Dec 11, 2018 at 4:08 PM Doug Phelps via AMSAT-BB
<amsat-bb@?????.???> wrote:
>
>> I had no problem replicating the Fox in a Box. My 3B+ runs around 70%
CPU when decoding white noise. I am having trouble receiving the satellites
because of the Spike in the center of the passband as well as images to the
side. Is there anyway to compensate for the offset voltage in LINUX that
will run on the P! 3B+? Programs like HDSDR allow you to do the correction
within the program but I cannot find where to do it in Fox Telem. There is
a Funcube control program for Windows but I have not found one for the PI.
According to the Fauncube site, alignment is required every time you loose
power to the PI.
>>
>> Also, I presume that the internet interface for the leader board is not
supported? When I click on leaderboard, I get a message that it is not
supported but when I acknowledge the pop up, the web brouser launches. It
does not seem to have this problem when sending or receiving data to the
server. Is this normal.
>>
>> I you would like to call me, my number is 847-514-8566. Thank you for
all of the work you put into the Fox in a Box. If I can fix the DC offset
problems, I plan to deploy one to Denver, CO and another to McAllen TX.
>>
>> Sent with [ProtonMail](https://protonmail.com) Secure Email.
>> _______________________________________________
>> 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: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 7
Date: Tue, 11 Dec 2018 21:38:21 +0000
From: Meeko Kittika <meekoblue@???????.??.??>
To: "amsat-bb@?????.???? <amsat-bb@?????.???>
Subject: [amsat-bb] AO-7
Message-ID:
<DB3PR0502MB4076A7BA055C7B7FE280BF6DE5A60@???????????????.????????.????.??????
?.???>
Content-Type: text/plain; charset="us-ascii"
Hi
Whats the current operational status of AO-7?
I ask because I'm returning to amateur radio after a lapse of about
*cough*30 plus years!
AO-7 is like sn old friend i remember and wkuld love to try working sometime
soon for old times sake.
I understand its only operational when not eclipsed, but wondering about
prefered mode/power etc and frankly does anyone else still use the old dear
anymore?
Many thanks in advance
Meeko
M0FVD
------------------------------
Message: 8
Date: Wed, 12 Dec 2018 12:56:34 +0000
From: Peter Goodhall <pgoodhall@?????.???>
To: Meeko Kittika <meekoblue@???????.??.??>
Cc: Amsat <amsat-bb@?????.???>
Subject: Re: [amsat-bb] AO-7
Message-ID:
<CAFvUaiqRqomv-H+TU4WisreyW-rmZd8VBU1-R2GniifCGRiokw@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
AO-7 is still working although attention to uplink power needs observed,
keep it low as possible.
It switches between U/V & V/A & still the go to satellite for working DX
You can see the status of all the satellites via the status page
http://www.amsat.org/status/
Look forward to hearing you on the birds
Peter, 2M0SQL
On Wed, 12 Dec 2018, 12:41 Meeko Kittika <meekoblue@???????.??.?? wrote:
> Hi
> Whats the current operational status of AO-7?
>
> I ask because I'm returning to amateur radio after a lapse of about
> *cough*30 plus years!
> AO-7 is like sn old friend i remember and wkuld love to try working
> sometime soon for old times sake.
>
> I understand its only operational when not eclipsed, but wondering about
> prefered mode/power etc and frankly does anyone else still use the old dear
> anymore?
>
> Many thanks in advance
> Meeko
> M0FVD
> _______________________________________________
> 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: http://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 9
Date: Wed, 12 Dec 2018 06:29:01 -0700
From: Ron VE8RT <ve8rt@?????.??>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] AO-7
Message-ID: <20181212062901.6290694766d58d2879899d85@?????.??>
Content-Type: text/plain; charset=US-ASCII
Hi Meeko,
I'd also been away from satellites for 20 years plus, came back for
a little activity this summer. That included looking for contacts on
AO-7 (worked a UA1).
Ron VE8RT DP22
On Tue, 11 Dec 2018 21:38:21 +0000
Meeko Kittika <meekoblue@???????.??.??> wrote:
> Hi
> Whats the current operational status of AO-7?
>
> I ask because I'm returning to amateur radio after a lapse of about
*cough*30 plus years!
> AO-7 is like sn old friend i remember and wkuld love to try working
sometime soon for old times sake.
>
> I understand its only operational when not eclipsed, but wondering about
prefered mode/power etc and frankly does anyone else still use the old dear
anymore?
>
> Many thanks in advance
> Meeko
> M0FVD
> _______________________________________________
> 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: http://www.amsat.org/mailman/listinfo/amsat-bb
--
Ron VE8RT <ve8rt@?????.??>
------------------------------
Message: 10
Date: Wed, 12 Dec 2018 21:43:33 +0800
From: Hans BX2ABT <hans.bx2abt@???.?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] AO-7
Message-ID: <510b5a97-c906-814f-a9ed-23fcf669edfb@???.?????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
Are the beacons still working? I've tried to get them many times, but
not a trace. Might be my modest setup, though.
73 de Hans
BX2ABT
On 12/12/2018 08:56 PM, Peter Goodhall wrote:
> AO-7 is still working although attention to uplink power needs observed,
> keep it low as possible.
>
> It switches between U/V & V/A & still the go to satellite for working DX
>
> You can see the status of all the satellites via the status page
> http://www.amsat.org/status/
>
> Look forward to hearing you on the birds
>
> Peter, 2M0SQL
>
>
> On Wed, 12 Dec 2018, 12:41 Meeko Kittika <meekoblue@???????.??.?? wrote:
>
>> Hi
>> Whats the current operational status of AO-7?
>>
>> I ask because I'm returning to amateur radio after a lapse of about
>> *cough*30 plus years!
>> AO-7 is like sn old friend i remember and wkuld love to try working
>> sometime soon for old times sake.
>>
>> I understand its only operational when not eclipsed, but wondering about
>> prefered mode/power etc and frankly does anyone else still use the old dear
>> anymore?
>>
>> Many thanks in advance
>> Meeko
>> M0FVD
>> _______________________________________________
>> 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: http://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: http://www.amsat.org/mailman/listinfo/amsat-bb
>
>
>
------------------------------
Message: 11
Date: Wed, 12 Dec 2018 09:17:08 -0500
From: Bill Booth <ve3nxk@?????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] Comet Wirtanen
Message-ID: <5C111864.20101@?????.???>
Content-Type: text/plain; charset=windows-1252; format=flowed
Not really part of AMSAT stuff but close. Has anyone got numbers, software
or a
location spot on the net for the Comet 46P/Wirtanen.
I can find lots of sky charts but nothing like a readout/print we would have
for
satellites.
Bill Booth VE3NXK
Sundridge ON, Canada
79.23.37 W x 45.46.18 N
FN05ns
Visit my weather WebCam at http://www.almaguin.com/wxcurrent/weather.html
Organ and Tissue Donation - The Gift of Life
Talk to your family. Your decision can make a difference.
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Message: 12
Date: Wed, 12 Dec 2018 06:45:50 -0800
From: Bob Hammond <propgrinder@?????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] VHF/UHF/SHF Antenna book recommendations?
Message-ID:
<CAKoB7OqwTahQ_jfphNk+2PwtQtsgXkhcfhpS3biQ8FTKsEPqXg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Any recommendations on a good book for VHF/UHF/SHF antenna theory,
construction, design? Hopefully including polarity switches.....or is it
really necessary?
Bob
WL7CQX
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End of AMSAT-BB Digest, Vol 13, Issue 415
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