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CX2SA  > SATDIG   16.06.19 18:30l 573 Lines 21074 Bytes #10 (0) @ WW
BID : AMSATBB14232
Subj: AMSAT-BB-digest V14 232
Path: ED1ZAC<ED1ZAC<IZ3LSV<IW8PGT<CX2SA
Sent: 190616/1621Z @:CX2SA.SAL.URY.SOAM #:8094 [Salto] FBB7.00e $:AMSATBB14232
From: CX2SA@CX2SA.SAL.URY.SOAM
To  : SATDIG@WW

Today's Topics:

   1. Re: A0-91 (Jeff Johns)
   2. Fwd:  A0-91 (Jeff Johns)
   3. ISS Digipeater (Jeff Johns)
   4. Re: ISS Digipeater (John Brier)
   5. Re: ISS Digipeater (Jeff Johns)
   6. Re: N7GV Field Day (Fernando Ramirez)
   7. input power question (mikflathead@???.????
   8. Re: input power question (Mark D. Johns)
   9. Re: input power question (B J)
  10. Re: input power question (Andrew Glasbrenner)
  11. Fixed elevation - how many elements? (Martin Cooper)
  12. Re: input power question (Ken M)


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

Message: 1
Date: Sat, 15 Jun 2019 19:21:49 -0500
From: Jeff Johns <jeff30339@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] A0-91
Message-ID: <2B558BBA-EE87-4BFA-9A7F-D26104BC3008@?????.???>
Content-Type: text/plain;	charset=utf-8

Please note that my post included my first and last names. Here?s my call,
WE4B. I guess it?s time to moderate me. Why has any anyone else been called
out for not posting their last name? There?s hundreds of examples.

Jeff WE4B

> On Jun 15, 2019, at 5:48 PM, Robert Bankston <ke4al@?????.???> wrote:
>
> Jeff,
>
> As a friendly reminder, please include your first name and your call sign
in all posts and replies to posts on the AMSAT-BB
>
> "All posts should include the author's first name and call sign, or full
name if not currently licensed."
> https://www.amsat.org/wordpress/wp-content/uploads/2013/05/AMSAT-AUP.pdf
>
> 73,
> Robert KE4AL
> AMSAT-NA VP of User Services.
> On Saturday, June 15, 2019, 2:37:46 PM CDT, Jeff Johns via AMSAT-BB
<amsat-bb@?????.???> wrote:
>
>
> If you were only on a VX7, you weren?t full duplex. It is what it is.
>
> > On Jun 15, 2019, at 11:59 AM, Joe Puma via AMSAT-BB <amsat-bb@?????.???>
wrote:
> >
> > Nice pass today over FN20, I was outside in the backyard with the Arrow
II and my XV-7R. If you heard my call through the pack of wolfs that hog
their way through during the whole pass let me know. Talking on these birds
is worst then trying to get to the front line of the food truck at the
county fair. Sheesh. Btw, I?m a city boy but felt the county fair reference
is relatable to most hams in the US, hi hi.
> >
> >
> > Joe
> > KD2NFC
> >
> > Sent from Mail for Windows 10
> >
> > _______________________________________________
> > 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: Sat, 15 Jun 2019 19:24:55 -0500
From: Jeff Johns <jeff30339@?????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] Fwd:  A0-91
Message-ID: <77E245FA-D18D-4230-8ED5-832DA33AE054@?????.???>
Content-Type: text/plain;	charset=utf-8


> From: Jeff Johns <jeff30339@?????.???>
> Date: June 15, 2019 at 7:24:22 PM CDT
> To: Robert Bankston <ke4al@?????.???>
> Subject: Re: [amsat-bb] A0-91
>
> Robert, your email telling me to to use my last name did not include your
last name, just like most others that participate here.
>
> Jeff Johns WE4B
>
>> On Jun 15, 2019, at 5:48 PM, Robert Bankston <ke4al@?????.???> wrote:
>>
>> Jeff,
>>
>> As a friendly reminder, please include your first name and your call sign
in all posts and replies to posts on the AMSAT-BB
>>
>> "All posts should include the author's first name and call sign, or full
name if not currently licensed."
>> https://www.amsat.org/wordpress/wp-content/uploads/2013/05/AMSAT-AUP.pdf
>>
>> 73,
>> Robert KE4AL
>> AMSAT-NA VP of User Services.
>> On Saturday, June 15, 2019, 2:37:46 PM CDT, Jeff Johns via AMSAT-BB
<amsat-bb@?????.???> wrote:
>>
>>
>> If you were only on a VX7, you weren?t full duplex. It is what it is.
>>
>> > On Jun 15, 2019, at 11:59 AM, Joe Puma via AMSAT-BB
<amsat-bb@?????.???> wrote:
>> >
>> > Nice pass today over FN20, I was outside in the backyard with the Arrow
II and my XV-7R. If you heard my call through the pack of wolfs that hog
their way through during the whole pass let me know. Talking on these birds
is worst then trying to get to the front line of the food truck at the
county fair. Sheesh. Btw, I?m a city boy but felt the county fair reference
is relatable to most hams in the US, hi hi.
>> >
>> >
>> > Joe
>> > KD2NFC
>> >
>> > Sent from Mail for Windows 10
>> >
>> > _______________________________________________
>> > 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: 3
Date: Sat, 15 Jun 2019 23:25:21 -0500
From: Jeff Johns <jeff30339@?????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] ISS Digipeater
Message-ID: <AFC7A089-A116-4756-8396-DA0686285FBF@?????.???>
Content-Type: text/plain;	charset=us-ascii

is anyone else having issues with the ISS APRS difipeater hearing them? I
have only been able to get one or two packets heard by it, even on high
passes.

Jeff Johns WE4B

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

Message: 4
Date: Sun, 16 Jun 2019 00:28:03 -0400
From: John Brier <johnbrier@?????.???>
To: Jeff Johns <jeff30339@?????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] ISS Digipeater
Message-ID:
<CALn0fKPXseF09iCDg_GeY43soDp78HUON5zkCDm-wiCkbzFCEg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"

I have read reports of this exact problem over the last few months. Some
say Kenwood radios seems to have better luck getting in. The equipment is
on the fritz.

73, John Brier KG4AKV

On Sun, Jun 16, 2019 at 12:26 AM Jeff Johns via AMSAT-BB <amsat-bb@?????.???>
wrote:

> is anyone else having issues with the ISS APRS difipeater hearing them? I
> have only been able to get one or two packets heard by it, even on high
> passes.
>
> Jeff Johns WE4B
> _______________________________________________
> 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: Sun, 16 Jun 2019 00:23:57 -0500
From: Jeff Johns <jeff30339@?????.???>
To: "robert_switzer@???.???? <robert_switzer@???.???>
Cc: amsat-bb@?????.???
Subject: Re: [amsat-bb] ISS Digipeater
Message-ID: <BB2B397E-1924-4FB4-9D4A-D80E039DEB73@?????.???>
Content-Type: text/plain;	charset=utf-8

Thanks for all the responses at least I know it?s not just me.

Jeff Johns WE4B

> On Jun 15, 2019, at 11:45 PM, Robert Switzer <rs2atmink@?????.???> wrote:
>
> Jeff
>
> Yes, with my D72A have been having a very hard time
>
> Robert KA2CZU
>
> Sent from Yahoo Mail on Android
>
> On Sun, Jun 16, 2019 at 12:26 AM, Jeff Johns via AMSAT-BB
> <amsat-bb@?????.???> wrote:
> is anyone else having issues with the ISS APRS difipeater hearing them? I
have only been able to get one or two packets heard by it, even on high
passes.
>
> Jeff Johns WE4B
> _______________________________________________
> 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: Sat, 15 Jun 2019 20:55:28 -0700
From: Fernando Ramirez <framirezferrer@?????.???>
To: Ray Soifer <rsoifer1@???.???>
Cc: AMSAT -BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] N7GV Field Day
Message-ID:
<CAGHXx8hfAZUug7JVmyJ8yVJ8P6VHcbahuh-N1ks+aWbEeWZKnQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"

Best wishes to everybody up there in G.V. I'll be in Nogales those days, in
case you need a backup, let me know.

73!

Fernando
NP4JV

On Sat, Jun 15, 2019, 10:06 AM Ray Soifer via AMSAT-BB <amsat-bb@?????.???>
wrote:

> In years past, the Green Valley (Arizona) ARC has operated HF and
> Satellite FD under the call WE7GV.  This year will be the first with our
> new call N7GV, in memory of the late Lloyd Miller.
> Look for N7GV (me operating) on FO-29 CW, and possibly AO-7.
> 73 Ray W2RS
> _______________________________________________
> 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: 7
Date: Sun, 16 Jun 2019 12:26:24 +0000 (UTC)
From: mikflathead@???.???
To: amsat-bb@?????.???
Subject: [amsat-bb] input power question
Message-ID: <2038401672.1858563.1560687984478@????.?????.???>
Content-Type: text/plain; charset=UTF-8

I have completed my sat station but am having trouble hearing myself. I have
checked cables and antenna ( M2) sat antenna. All seems well with low SWR. I
can hear on the 2 meter downlink. How much power is needed on the UHF
uplink? Hope to figure this out shortly. This is being done on the SSB sats.
Thanks Mike WB8PFZ


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

Message: 8
Date: Sun, 16 Jun 2019 08:46:55 -0500
From: "Mark D. Johns" <mjohns+K0JM@??????.???>
To: mikflathead@???.???
Cc: AMSAT <amsat-bb@?????.???>
Subject: Re: [amsat-bb] input power question
Message-ID:
<CAHKCqnBgYhjBK6e-4TVg2zMvRc0eVO4xAbhJ=JtD62YdwFO3Zw@????.?????.???>
Content-Type: text/plain; charset="UTF-8"

This is a very common issue for newcomers to the linear satellites.
Almost every pass, there is someone calling CQ over and over again
with a loud signal, but completely oblivious to the several stations
trying to answer them.

Downlinks on the linear satellites, especially on UHF, are MUCH weaker
than on the FM satellites. Remember that the transmit power of the
satellite is being distributed across an entire passband that many
stations are sharing -- unlike FM, where all the power is just on one
frequency for one station at a time (ideally).

You are going to need the best, low-loss feedline you can afford for
UHF, and that feedline needs to be as short as possible. If your
feedline is more than about 50 feet (or about 15 meters) you are going
to want to have a pre-amplifier very near the antenna. A good pre-amp,
with RF switching so that you don't accidentally blow it up by
transmitting through it, can be had for less than $150 from several
manufacturers. Or, there are designs around to roll your own, if you
are good at that sort of thing.

Good luck, and hope to work you on the linear sats very soon!
--
Mark D. Johns
K?JM / M?GZO / ex-9H3DJ / ex-K?MDJ
Brooklyn Park, MN USA   EN35hd
-----------------------------------------------
"Heaven goes by favor; if it went by merit,
   you would stay out and your dog would go in."
    ---Mark Twain

On Sun, Jun 16, 2019 at 7:26 AM WB8PFZ via AMSAT-BB <amsat-bb@?????.???>
wrote:
>
> I have completed my sat station but am having trouble hearing myself. I
have checked cables and antenna ( M2) sat antenna. All seems well with low
SWR. I can hear on the 2 meter downlink. How much power is needed on the UHF
uplink? Hope to figure this out shortly. This is being done on the SSB sats.
Thanks Mike WB8PFZ
> _______________________________________________
> 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: 9
Date: Sun, 16 Jun 2019 13:49:26 +0000
From: B J <va6bmj@?????.???>
To: mikflathead@???.???
Cc: amsat-bb@?????.???
Subject: Re: [amsat-bb] input power question
Message-ID:
<CAP7QzkPUyo67iwA6jAO42MMFcb56J+=CXCNTp0gibtBk8Mnfrg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"

On 6/16/19, WB8PFZ via AMSAT-BB <amsat-bb@?????.???> wrote:
> I have completed my sat station but am having trouble hearing myself. I have
> checked cables and antenna ( M2) sat antenna. All seems well with low SWR. I
> can hear on the 2 meter downlink. How much power is needed on the UHF
> uplink? Hope to figure this out shortly. This is being done on the SSB sats.

<snip>

I've found that 5 W is adequate for both my IC-910 and my FT-847.

73s

Bernhard VA6BMJ @ DO33FL


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

Message: 10
Date: Sun, 16 Jun 2019 09:59:17 -0400
From: Andrew Glasbrenner <glasbrenner@??????????.???>
To: mikflathead@???.???
Cc: amsat-bb@?????.???
Subject: Re: [amsat-bb] input power question
Message-ID: <B7A9FB7A-3451-4633-B103-10875BAB5C06@??????????.???>
Content-Type: text/plain;	charset=us-ascii

Hi Mike,

What are the antennas and feedline type and length?

73, Drew KO4MA

> On Jun 16, 2019, at 8:26 AM, WB8PFZ via AMSAT-BB <amsat-bb@?????.???> wrote:
>
> I have completed my sat station but am having trouble hearing myself. I
have checked cables and antenna ( M2) sat antenna. All seems well with low
SWR. I can hear on the 2 meter downlink. How much power is needed on the UHF
uplink? Hope to figure this out shortly. This is being done on the SSB sats.
Thanks Mike WB8PFZ
> _______________________________________________
> 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: 11
Date: Sun, 16 Jun 2019 07:32:39 -0700
From: Martin Cooper <kd6yam@?????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] Fixed elevation - how many elements?
Message-ID:
<CAGEtHiLPcYx+3Ldvw+zbotxapWSiECJcTUXUoDiFNWnwgdWKXQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"

I'm contemplating building a couple of yagis, possibly even crossed
ones, and putting them up at fixed elevation (i.e. az-only rotator).
What I'm unclear about is how many elements to consider.

My location is really pretty dreadful for seeing sky. There's a big
hill to the NE that restricts me to above 40 degrees in that
direction. I'm in a single-storey house, with neighbouring two-storey
houses to the NW, SW, and S. In between all that, there are other
single-storey houses, and trees in most of the gaps between houses. I
can't afford to put up a tower (and it could never get above the hill
anyway), so I'm looking at not too much above my roofline.

To at least get through the trees, I'd think more elements would be
better. But more elements narrows the beam, and at fixed elevation,
that, at some point, will restrict even further how much of the sky I
can play with.

I'm looking for thoughts on how many elements would be recommended,
and how many would be too many, for a fixed elevation, both for VHF
and UHF. Ultimately, I'd like to be able to get on the linears, so not
limited to the FM sats. Any thoughts would be much appreciated.

Thanks in advance.

Martin.
KD6YAM


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

Message: 12
Date: Sun, 16 Jun 2019 16:17:19 +0000
From: Ken M <va7kbm@???????.???>
To: "amsat-bb@?????.???? <amsat-bb@?????.???>
Subject: Re: [amsat-bb] input power question
Message-ID:
<MWHPR01MB2640721618CB8C1F0E310FAD98E80@?????????????.????.????????????.???>

Content-Type: text/plain; charset="utf-8"

Hello Mark,

Picking up on your comment about UHF pre-amps that "can be had for less
than $150 from several manufacturers", could you provide a list or some
suggestions. I haven't searched exhaustively but some of seen are north
of $300 and I would love to find a less expensive, but quality, option.

Thanks & 73, Ken, VA7KBM

On 2019-06-16 6:46 a.m., Mark D. Johns via AMSAT-BB wrote:
> This is a very common issue for newcomers to the linear satellites.
> Almost every pass, there is someone calling CQ over and over again
> with a loud signal, but completely oblivious to the several stations
> trying to answer them.
>
> Downlinks on the linear satellites, especially on UHF, are MUCH weaker
> than on the FM satellites. Remember that the transmit power of the
> satellite is being distributed across an entire passband that many
> stations are sharing -- unlike FM, where all the power is just on one
> frequency for one station at a time (ideally).
>
> You are going to need the best, low-loss feedline you can afford for
> UHF, and that feedline needs to be as short as possible. If your
> feedline is more than about 50 feet (or about 15 meters) you are going
> to want to have a pre-amplifier very near the antenna. A good pre-amp,
> with RF switching so that you don't accidentally blow it up by
> transmitting through it, can be had for less than $150 from several
> manufacturers. Or, there are designs around to roll your own, if you
> are good at that sort of thing.
>
> Good luck, and hope to work you on the linear sats very soon!
> --
> Mark D. Johns
> K?JM / M?GZO / ex-9H3DJ / ex-K?MDJ
> Brooklyn Park, MN USA   EN35hd
> -----------------------------------------------
> "Heaven goes by favor; if it went by merit,
>     you would stay out and your dog would go in."
>      ---Mark Twain
>
> On Sun, Jun 16, 2019 at 7:26 AM WB8PFZ via AMSAT-BB <amsat-bb@?????.???>
wrote:
>> I have completed my sat station but am having trouble hearing myself. I
have checked cables and antenna ( M2) sat antenna. All seems well with low
SWR. I can hear on the 2 meter downlink. How much power is needed on the UHF
uplink? Hope to figure this out shortly. This is being done on the SSB sats.
Thanks Mike WB8PFZ
>> _______________________________________________
>> 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

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

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 14, Issue 232
*****************************************


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