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CX2SA > SATDIG 15.09.18 01:01l 762 Lines 27084 Bytes #999 (0) @ WW
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Sent: 180914/2254Z @:CX2SA.SAL.URY.SOAM #:53427 [Salto] FBB7.00e $:AMSATBB13312
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: newbie question: where to find active stations
(Martin A Schuette)
2. K4FEG SK (christy hunter)
3. Re: K4FEG SK (D. Craig Fox)
4. curious question (Bob- W7LRD)
5. Re: curious question (Paul Andrews)
6. Re: curious question (Bryan Green)
7. Re: Frank, K4FEG SK (christy hunter)
8. Re: curious question (Greg D)
9. Re: curious question (Bryan KL7CN)
10. Re: curious question (Greg D)
11. Re: curious question (Ed Krome)
12. Re: curious question (Jeff Johns)
----------------------------------------------------------------------
Message: 1
Date: Fri, 14 Sep 2018 02:11:59 +0000
From: Martin A Schuette <marty.schuette@???.???>
To: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] newbie question: where to find active stations
Message-ID:
<CY4PR07MB3557094A9B5183661320BA3D9F190@?????????????.????????.????.???????.??
?>
Content-Type: text/plain; charset="ks_c_5601-1987"
As others have said, Twitter is the best resource for skeds. Most serious
satellite grid and dx chasers, at least in North America, use twitter.
A few other resources you may consider include:
Bertrand, FG8OJ's, Sat Grid Hunting site (https://sat.fg8oj.com/satgrid.php)
can give you a general idea of how active particular grids are. I highly
suggest anyone who has not uploaded their satellite log to Burt's website to
do so, it is a great resource for us all.
Some satellite communities use apps like Whatsapp.
There is also the N8FQ Satellite QSO Sked Page.
(http://n8fq.org/sked/index.php?board=sat) It is not very active now but
would have potential. Also a good resource for skeds on HF.
73,
Marty Schuette, N9EAT
AMSAT LM-2507
???
________________________________
From: AMSAT-BB <amsat-bb-bounces@?????.???> on behalf of Don KB2YSI
<kb2ysi@?????.???>
Sent: Thursday, September 13, 2018 8:47:22 PM
To: AMSAT BB
Subject: Re: [amsat-bb] newbie question: where to find active stations
Lots of Twitter activity, #amsat is a good place to start looking for
people.
Almost any FM pass will have people on, if you want to skip looking for
someone to chase. They would at least help you learn how to receive, which
is the first step to making a QSO.
On Thu, Sep 13, 2018 at 9:31 PM Ryan Noguchi via AMSAT-BB <
amsat-bb@?????.???> wrote:
> Welcome! Hope to hear you on the birds soon.
>
> There isn't really a "spotting" network or site for satellite operating
> like in other niches of ham radio, such as SOTA or EME, for VHF/UHF in
> general (http://www.n6sjv.org/), or automated like the Reverse Beacon
> Network. Not sure if anyone's tried to use that N6SJV site for this
> purpose. There's no obvious indication on that site that they do not
> consider satellite operating to be in scope.
>
> The closest current resource to what you're seeking is probably Twitter.
> Many prolific satellite rover ops announce their upcoming grid operations
> (many from rare grid squares) in publicly accessible tweets. Many will
> announce the specific passes they plan to operate, or even in real time
> announce being QRV for a given pass. I think Twitter is the closest thing
> we have so far to what you're looking for. I didn't use Twitter until I
> started getting more active on satellites, and only use it in conjunction
> with satellite operating.
>
> 73, Ryan AI6DO (twitter.com/AI6DO)
>
>
>
> On Thursday, September 13, 2018, 6:12:30 PM PDT, David J. Schmocker <
> kj9idave@???????.???> wrote:
>
> Everyone:
> This newbie (not yet QRV, hope to be QRV within six months) is looking to
> find out which stations are active so that I can determine if possible to
> work certain stations.
>
> On 6m moon-bounce, we coordinate ?who?s on and which frequencies? using the
> internet ON4KST chat (EME page) [and then of course any QSO attempts move
> solely to the RF path off of the internet]. Is there a similar
> internet-based chat page (for purpose of coordinating and finding out who?s
> QRV real-time) for satellite CW, SSB, and FM work please?
>
> Thank you in advance.
>
> Kind regards, looking forward to my 1st satellite QSO and many more.
>
> Very 73,
>
> David J. Schmocker, KJ9I
>
>
> _______________________________________________
> 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
>
--
73,
Don KB2YSI
https://www.hamqth.com/kb2ysi
_______________________________________________
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: 2
Date: Fri, 14 Sep 2018 07:08:46 -0700
From: christy hunter <cchunter3@??????????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] K4FEG SK
Message-ID: <3ebddbc4-6d15-d338-613a-81b21ed16b7a@??????????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
This was truly sad news.
From my many QSOs with Frank, and my listening to his many QSOs with
others, Frank was always ready to share helpful information or a quick
humorous remark. It was a treat to listen to his many cat stories,and
other interesting tales. We will very much miss his wry humor,
intellect, and friendly presence he brought to the Satellites' air waves.
Our thoughts are with Frank's family as well.
73 Christy KB6LTY
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------------------------------
Message: 3
Date: Fri, 14 Sep 2018 17:41:44 +0000
From: "D. Craig Fox" <DFox@??????.???>
To: 'christy hunter' <cchunter3@??????????.???>, "amsat-bb@?????.????
<amsat-bb@?????.???>
Subject: Re: [amsat-bb] K4FEG SK
Message-ID: <4c1eb0f8dc184ca79ccf808c5806d6a2@??????.???.???>
Content-Type: text/plain; charset="us-ascii"
What Christy said. His was always a welcome response to a CQ on an otherwise
quiet FO29.
Final 73s Frank
Craig
N6RSX
-----Original Message-----
From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of christy hunter
Sent: Friday, September 14, 2018 7:09 AM
To: amsat-bb@?????.???
Subject: [amsat-bb] K4FEG SK
This was truly sad news.
From my many QSOs with Frank, and my listening to his many QSOs with
others, Frank was always ready to share helpful information or a quick
humorous remark. It was a treat to listen to his many cat stories,and other
interesting tales. We will very much miss his wry humor, intellect, and
friendly presence he brought to the Satellites' air waves.
Our thoughts are with Frank's family as well.
73 Christy KB6LTY
---
This email has been checked for viruses by AVG.
https://www.avg.com
_______________________________________________
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
(If this message is spam, please report it to IT Dept. Thank you.)
------------------------------
Message: 4
Date: Fri, 14 Sep 2018 13:45:21 -0700 (PDT)
From: Bob- W7LRD <w7lrd@???????.???>
To: amsat-bb <amsat-bb@?????.???>
Subject: [amsat-bb] curious question
Message-ID: <1459841234.5891.1536957921793@???????.???????.???>
Content-Type: text/plain; charset=UTF-8
Hi All- Just wondering-in the real world how much attenuation is there with
trees? I am surrounded with fir trees, a huge maple tree and cedar tree, (I
live in the north west). I run a IC-910, preamps at the cp yagis.
73 Bob W7LRD
Seattle
------------------------------
Message: 5
Date: Fri, 14 Sep 2018 16:51:33 -0400
From: Paul Andrews <w2hro.fn20@?????.???>
To: Bob- W7LRD <w7lrd@???????.???>
Cc: amsat-bb <amsat-bb@?????.???>
Subject: Re: [amsat-bb] curious question
Message-ID:
<CAOsf+NT3Xbyw6Ag5pTM9r7aWqmk=+sN4+f3MRGzVWfpyu93qJA@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Trees cause real attenuation on both 2M and 70cm. Near field effects are
more pronounced that far field.
It's not a hobby killer but it will degrade your performance.
Trees are a hobby killer for EME on 2M and above.
73 - Paul - W2HRO
On Fri, Sep 14, 2018, 16:46 Bob- W7LRD <w7lrd@???????.???> wrote:
> Hi All- Just wondering-in the real world how much attenuation is there
> with trees? I am surrounded with fir trees, a huge maple tree and cedar
> tree, (I live in the north west). I run a IC-910, preamps at the cp
> yagis.
>
> 73 Bob W7LRD
>
> Seattle
> _______________________________________________
> 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: Fri, 14 Sep 2018 13:58:39 -0700
From: Bryan Green <bryan@?????.???>
To: amsat-bb <amsat-bb@?????.???>
Subject: Re: [amsat-bb] curious question
Message-ID: <7FD48688-C8F3-4A1F-ADF0-0F02FB7CFDE6@?????.???>
Content-Type: text/plain; charset=utf-8
Leaves on trees a make a difference for me.
I call it ?Arboreal QSB?.
One advantage of portable ops is that you can move away from the Arboreal QSB.
-- bag
Bryan KL7CN/W6
bryan@?????.???
> On Sep 14, 2018, at 13:45, Bob- W7LRD <w7lrd@???????.???> wrote:
>
> Hi All- Just wondering-in the real world how much attenuation is there
with trees? I am surrounded with fir trees, a huge maple tree and cedar
tree, (I live in the north west). I run a IC-910, preamps at the cp yagis.
>
> 73 Bob W7LRD
>
> Seattle
> _______________________________________________
> 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: Thu, 13 Sep 2018 19:05:16 -0700
From: christy hunter <cchunter3@??????????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Frank, K4FEG SK
Message-ID: <4834650d-392d-648d-4d19-2c4718437258@??????????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
This was truly sad news.
From my many QSOs with Frank, and my listening to his many QSOs with
others, Frank was always ready to share helpful information or a quick
humorous remark. It was a treat to listen to his many cat stories,and
other interesting tales (no pun intended). We will very much miss his
wry humor, intellect, and friendly presence he brought to the
Satellites' air waves.
Our thoughts are with Frank's family as well.
73 Christy KB6LTY
---
This email has been checked for viruses by AVG.
https://www.avg.com
------------------------------
Message: 8
Date: Fri, 14 Sep 2018 14:13:32 -0700
From: Greg D <ko6th.greg@?????.???>
To: Bob- W7LRD <w7lrd@???????.???>
Cc: amsat-bb <amsat-bb@?????.???>
Subject: Re: [amsat-bb] curious question
Message-ID: <4af3417b-a92f-6340-e3d1-b2ecf768e79a@?????.???>
Content-Type: text/plain; charset=us-ascii
Hi Bob,
Trees probably do have an effect, but unlike others, I've not found it
to be a significant problem. At least, not one where I need to plan my
passes around which trees might be in the way. The only time they did
was with AO-40, where transmitting on 70cm directly into a huge oak tree
would have the signal bounce back and interfere with the 2.4 ghz
downlink. One could map out where the limbs were based on the results.
In an area of the country where shade in the summer is prized more than
many other things, taking a chain saw to a heritage-sized oak tree in
pursuit of a QSO just wasn't an option. So, AO-40 contacts to the
south-east never happened. Then "unintended chemistry experiments in
space" made it no longer relevant. {sniff} The only issue I have with
the trees now is to keep them trimmed appropriately so they don't snag
the antennas as they swing round.
Greg KO6TH
Bob- W7LRD wrote:
> Hi All- Just wondering-in the real world how much attenuation is there
with trees? I am surrounded with fir trees, a huge maple tree and cedar
tree, (I live in the north west). I run a IC-910, preamps at the cp yagis.
>
> 73 Bob W7LRD
>
> Seattle
> _______________________________________________
> 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: Fri, 14 Sep 2018 14:21:12 -0700
From: Bryan KL7CN <bryan@?????.???>
To: amsat-bb <amsat-bb@?????.???>
Subject: Re: [amsat-bb] curious question
Message-ID: <A86CB276-7797-4A59-B8D9-13A682471A86@?????.???>
Content-Type: text/plain; charset=us-ascii
Well said, Greg -- to clarify my original comments:
1. Arboreal QSB is real, but...
2. It's not that significant.
3. Switching polarity helps quite a bit.
I really only notice it when operating FO-29 on passes during the height of
the Spring when the leaves seem to have the most moisture.
Otherwise, it's not a general concern. But it is fun to say "Arboreal QSB".
-- bag
Bryan KL7CN/W6
Location: CM98, usually
E-Mail: bryan@?????.???
Telephone/SMS: 408-836-7279
> On Sep 14, 2018, at 14:13, Greg D <ko6th.greg@?????.???> wrote:
>
> Hi Bob,
>
> Trees probably do have an effect, but unlike others, I've not found it
> to be a significant problem. At least, not one where I need to plan my
> passes around which trees might be in the way. The only time they did
> was with AO-40, where transmitting on 70cm directly into a huge oak tree
> would have the signal bounce back and interfere with the 2.4 ghz
> downlink. One could map out where the limbs were based on the results.
>
> In an area of the country where shade in the summer is prized more than
> many other things, taking a chain saw to a heritage-sized oak tree in
> pursuit of a QSO just wasn't an option. So, AO-40 contacts to the
> south-east never happened. Then "unintended chemistry experiments in
> space" made it no longer relevant. {sniff} The only issue I have with
> the trees now is to keep them trimmed appropriately so they don't snag
> the antennas as they swing round.
>
> Greg KO6TH
>
>
> Bob- W7LRD wrote:
>> Hi All- Just wondering-in the real world how much attenuation is there
with trees? I am surrounded with fir trees, a huge maple tree and cedar
tree, (I live in the north west). I run a IC-910, preamps at the cp yagis.
>>
>> 73 Bob W7LRD
>>
>> Seattle
>> _______________________________________________
>> 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: 10
Date: Fri, 14 Sep 2018 14:45:40 -0700
From: Greg D <ko6th.greg@?????.???>
To: Bryan KL7CN <bryan@?????.???>, amsat-bb <amsat-bb@?????.???>
Subject: Re: [amsat-bb] curious question
Message-ID: <250681ea-b3e4-3de4-062c-8fa494092c53@?????.???>
Content-Type: text/plain; charset=us-ascii
Agreed!
Good point about polarity choices. It's kind of interesting to consider
the diffraction effects that large, long hunks of wet wood might have on
a 70cm signal. Probably less so on 2m, given the wavelength.
Oh, I forgot to mention that green wood is pretty much a killer on 2.4
ghz. Think of what makes your microwave oven work. I suspect, but have
not tried it yet, that the 1.2 ghz uplink to AO-92 on weekends might be
affected if you don't have a lot of power to start with.
For some time, a bunch of years ago, our home internet was delivered via
a commercial Wi-Fi-based service. I was a bit of a test subject, being
on the fringe needing to burn a bit of an RF hole through yet more of
our dear oak trees. What was interesting was that the presence of rain
didn't make much of a difference on that band. Wood, wet or "dry" still
absorbed signal quite well, and as the trees grew over time, the signal
degraded to the point of stopping service. Fortunately, the cable
internet folks came through about the same time and we switched.
So there is a point, somewhere between 70cm and 13 cm, where trees
become a crippling factor. Below that, they're mostly just shade.
Greg KO6TH
Bryan KL7CN wrote:
> Well said, Greg -- to clarify my original comments:
>
> 1. Arboreal QSB is real, but...
> 2. It's not that significant.
> 3. Switching polarity helps quite a bit.
>
> I really only notice it when operating FO-29 on passes during the height
of the Spring when the leaves seem to have the most moisture.
>
> Otherwise, it's not a general concern. But it is fun to say "Arboreal QSB".
>
> -- bag
>
> Bryan KL7CN/W6
> Location: CM98, usually
> E-Mail: bryan@?????.???
> Telephone/SMS: 408-836-7279
>
>> On Sep 14, 2018, at 14:13, Greg D <ko6th.greg@?????.???> wrote:
>>
>> Hi Bob,
>>
>> Trees probably do have an effect, but unlike others, I've not found it
>> to be a significant problem. At least, not one where I need to plan my
>> passes around which trees might be in the way. The only time they did
>> was with AO-40, where transmitting on 70cm directly into a huge oak tree
>> would have the signal bounce back and interfere with the 2.4 ghz
>> downlink. One could map out where the limbs were based on the results.
>>
>> In an area of the country where shade in the summer is prized more than
>> many other things, taking a chain saw to a heritage-sized oak tree in
>> pursuit of a QSO just wasn't an option. So, AO-40 contacts to the
>> south-east never happened. Then "unintended chemistry experiments in
>> space" made it no longer relevant. {sniff} The only issue I have with
>> the trees now is to keep them trimmed appropriately so they don't snag
>> the antennas as they swing round.
>>
>> Greg KO6TH
>>
>>
>> Bob- W7LRD wrote:
>>> Hi All- Just wondering-in the real world how much attenuation is there
with trees? I am surrounded with fir trees, a huge maple tree and cedar
tree, (I live in the north west). I run a IC-910, preamps at the cp yagis.
>>>
>>> 73 Bob W7LRD
>>>
>>> Seattle
>>> _______________________________________________
>>> 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: Fri, 14 Sep 2018 17:58:52 -0400
From: Ed Krome <e.krome@???????.???>
To: Bryan KL7CN <bryan@?????.???>
Cc: amsat-bb <amsat-bb@?????.???>
Subject: Re: [amsat-bb] curious question
Message-ID: <B063652F-4733-44BD-85BC-A967B931179C@???????.???>
Content-Type: text/plain; charset=utf-8
As some brilliant person once said ? best amplifier I ever bought was a
chain saw?.
Ed Krome K9EK
Sent from my iPhone
> On Sep 14, 2018, at 5:21 PM, Bryan KL7CN <bryan@?????.???> wrote:
>
> Well said, Greg -- to clarify my original comments:
>
> 1. Arboreal QSB is real, but...
> 2. It's not that significant.
> 3. Switching polarity helps quite a bit.
>
> I really only notice it when operating FO-29 on passes during the height
of the Spring when the leaves seem to have the most moisture.
>
> Otherwise, it's not a general concern. But it is fun to say "Arboreal QSB".
>
> -- bag
>
> Bryan KL7CN/W6
> Location: CM98, usually
> E-Mail: bryan@?????.???
> Telephone/SMS: 408-836-7279
>
>> On Sep 14, 2018, at 14:13, Greg D <ko6th.greg@?????.???> wrote:
>>
>> Hi Bob,
>>
>> Trees probably do have an effect, but unlike others, I've not found it
>> to be a significant problem. At least, not one where I need to plan my
>> passes around which trees might be in the way. The only time they did
>> was with AO-40, where transmitting on 70cm directly into a huge oak tree
>> would have the signal bounce back and interfere with the 2.4 ghz
>> downlink. One could map out where the limbs were based on the results.
>>
>> In an area of the country where shade in the summer is prized more than
>> many other things, taking a chain saw to a heritage-sized oak tree in
>> pursuit of a QSO just wasn't an option. So, AO-40 contacts to the
>> south-east never happened. Then "unintended chemistry experiments in
>> space" made it no longer relevant. {sniff} The only issue I have with
>> the trees now is to keep them trimmed appropriately so they don't snag
>> the antennas as they swing round.
>>
>> Greg KO6TH
>>
>>
>> Bob- W7LRD wrote:
>>> Hi All- Just wondering-in the real world how much attenuation is there
with trees? I am surrounded with fir trees, a huge maple tree and cedar
tree, (I live in the north west). I run a IC-910, preamps at the cp yagis.
>>>
>>> 73 Bob W7LRD
>>>
>>> Seattle
>>> _______________________________________________
>>> 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: 12
Date: Fri, 14 Sep 2018 17:50:30 -0500
From: Jeff Johns <jeff30339@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] curious question
Message-ID: <48F7D45F-6F4A-4E9E-919C-2B815C9B6AD5@?????.???>
Content-Type: text/plain; charset=utf-8
Trees with wet leafs on them tend to gobble up UHF uplinks. It?s not quite
as bad on VHF but can have an affect.
Jeff WE4B
> On Sep 14, 2018, at 3:51 PM, Paul Andrews <w2hro.fn20@?????.???> wrote:
>
> Trees cause real attenuation on both 2M and 70cm. Near field effects are
> more pronounced that far field.
>
> It's not a hobby killer but it will degrade your performance.
>
> Trees are a hobby killer for EME on 2M and above.
>
> 73 - Paul - W2HRO
>
>> On Fri, Sep 14, 2018, 16:46 Bob- W7LRD <w7lrd@???????.???> wrote:
>>
>> Hi All- Just wondering-in the real world how much attenuation is there
>> with trees? I am surrounded with fir trees, a huge maple tree and cedar
>> tree, (I live in the north west). I run a IC-910, preamps at the cp
>> yagis.
>>
>> 73 Bob W7LRD
>>
>> Seattle
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Sent via amsat-bb@?????.???.
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End of AMSAT-BB Digest, Vol 13, Issue 312
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