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CX2SA > SATDIG 01.09.16 18:41l 751 Lines 24585 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: Satellite Radios (Ted)
2. Re: Satellite Radios (Jim Jerzycke)
3. Re: Satellite Radios (Peter Laws)
4. Re: Satellite Radios (James R. La Frieda)
5. Re: HIgh efficiency solar cells for cubesats (Edward R Cole)
6. Re: Satellite Radios (Glenn Miller - AA5PK)
7. Re: Very Small-Scale Solar Power for Ham Use? (Roger)
8. Re: Satellite Radios (Simon Brown)
9. Re: Satellite Radios (Jari A)
10. SpaceX Launch Pad Test Explosion (Alan)
11. (no subject) (jeffory broughton)
12. Re: Satellite Radios (on4cjq@xxxxxxx.xxx
13. Re: (no subject) (Zach Metzinger)
14. Satellite Radios (Gerald Payton)
----------------------------------------------------------------------
Message: 1
Date: Wed, 31 Aug 2016 16:08:34 -0700
From: "Ted" <k7trkradio@xxxxxxx.xxx>
To: "'Gerald Payton'" <gp_ab5r@xxxxxxx.xxx>, "'Amsat BB'"
<amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Satellite Radios
Message-ID: <001a01d203dc$99b685d0$cd239170$@xxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
KW TS-2000
Yaesu FT-847
IC-910
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Gerald
Payton
Sent: Wednesday, August 31, 2016 2:30 PM
To: Amsat BB
Subject: [amsat-bb] Satellite Radios
EXCLUDING the radios used for portable and with handheld antennas, what are
the radios used for FIXED operations? I have my IC-2730, which I understand
can be used, but wonder what other radio options are there out there. Are
the older second-hand radios (hard to find) the answer?
Any comments appreciated.
73,
Jerry AB5R
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. 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: Wed, 31 Aug 2016 23:40:29 +0000
From: Jim Jerzycke <kq6ea@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Satellite Radios
Message-ID: <abd3852b-0880-b879-505c-2a049ae2f822@xxxxxxx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
And for some *real* oldies, the Yeasu FT-736 and FT-726, as long as it
has the satellite module installed, and the Kenwood TS-790.
I have both the TS-790 and FT-847. I've never tried the 790 on
satellites, but for terrestrial use, it has a better receiver (quieter)
than the 847.
I run my 847 under SatPC32 control, which I also use to control my
rotors through a Fox Delta interface box.
73, Jim KQ6EA
On 08/31/2016 11:08 PM, Ted wrote:
> KW TS-2000
> Yaesu FT-847
> IC-910
>
> -----Original Message-----
> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Gerald
> Payton
> Sent: Wednesday, August 31, 2016 2:30 PM
> To: Amsat BB
> Subject: [amsat-bb] Satellite Radios
>
> EXCLUDING the radios used for portable and with handheld antennas, what are
> the radios used for FIXED operations? I have my IC-2730, which I understand
> can be used, but wonder what other radio options are there out there. Are
> the older second-hand radios (hard to find) the answer?
>
>
> Any comments appreciated.
>
>
> 73,
>
> Jerry AB5R
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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@xxxxx.xxx. 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: Wed, 31 Aug 2016 18:54:48 -0500
From: Peter Laws <plaws0@xxxxx.xxx>
To: AMSAT-BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Satellite Radios
Message-ID:
<CANVAiQ-edo6=TfaR1-V8-X9t7k6BD+n=QsW1DZe7i0COT0Dvvw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
On Wed, Aug 31, 2016 at 6:40 PM, Jim Jerzycke <kq6ea@xxxxxxx.xxx> wrote:
> I've never tried the 790 on satellites
I have, though not in this millennium. Worked great on AO-13.
--
Peter Laws | N5UWY | plaws plaws net | Travel by Train!
------------------------------
Message: 4
Date: Wed, 31 Aug 2016 16:56:49 -0700
From: "James R. La Frieda" <lafrieda@xxxxxxxxx.xxx>
To: Gerald Payton <gp_ab5r@xxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Satellite Radios
Message-ID: <bf6055f9-0925-53ee-558a-b913e76ee800@xxxxxxxxx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
Hi Jerry,
Your IC-2730 can be used for satellites, and the same is true for those
of us-who have been licensed for over 60 years and who are now in our
mid to late 70's -
who are still using - for satellites- some of the earlier ICOM
multi-mode gear, such as the ICOM 211, ICOM 251A and ICOM 451A, which
are frequently sold on
E-Bay. e.g. for $100 -to - $200 :
http://www.ebay.com/itm/ICOM-IC-451A-430-MHz-MULTI-MODE-FM-SSB-CW-TRANSCEIVER-
/381751947130?hash=item58e2306f7a:g:bigAAOSwxg5Xw2Op
And, some of us - who are in our late 70's- are still using the ancient
dual band, dual receive HT that is known as the Yaesu FT-470 for
satellites.
In sum, it's wonderful to be able to work satellites with a Yaesu HT and
ICOM multi-mode VHF/UHF transceivers that still work, even though they
are over 40 years old.
All the Best,
73, Jim (N6MV)
On 8/31/2016 2:29 PM, Gerald Payton wrote:
> EXCLUDING the radios used for portable and with handheld antennas, what
are the radios used for FIXED operations? I have my IC-2730, which I
understand can be used, but wonder what other radio options are there out
there. Are the older second-hand radios (hard to find) the answer?
>
>
> Any comments appreciated.
>
>
> 73,
>
> Jerry AB5R
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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: Wed, 31 Aug 2016 16:30:53 -0800
From: Edward R Cole <kl7uw@xxxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] HIgh efficiency solar cells for cubesats
Message-ID: <201609010030.u810UsBY011034@xxxxxxxxx.xxxxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
Bob,
That's very interesting curve. Guessing for most home users its more
cost effective to purchase more cells for increased power than paying
more for higher efficiency.
I really don't recall what I paid for remote radio site solar power
about 15 years ago. I believe they were 30 to 50w panels and cost
about $400. Our first panels were made by Arco and Solar Electric
(something) made the last ones we installed.
This was commercial mountain-top comm sites only reachable by
helicopter about one month/year due to weather. Our largest site was
shared with State of Alaska who maintained a mw link from Kenai
Peninsula to Kodiak Island (about 70 mi over water). We had five
radios, most of which were 5w but two had 30w amps (all
FM). Originally we used a battery bank rated at 10,800 AH at 13.2v
(were air cells) which had to be replaced every three years. But we
installed a two panel solar charged system using two 100 AH
deep-cycle batteries to supplement the fixed battery bank during
roughly 6-months of high sunlight in the arctic summer.
We thought that would extend the main battery bank life to four years
but it did not quite do it. Energy use analysis was complicated by
multiple users so our guess fell short.
Helicopter cost each year for one trip to the mountain ran $5,000 for
40min flight one-way and standby time on the mountain while we worked
(usually four hours). After being stuck on the mountain for seven
days in 40F-40mph winds in rain we decided to keep the helo on the
mountain so we could get off quickly in event of bad wx which could
develop in 15-min socking in the mountain top for long
duration. Winter had the shelter covered over under 15-20 foot of
snow with winds upward of 200 mph. Top of the mountain had
year-round snow cover.
Nice to be retired <smile>
73, Ed - KL7UW
http://www.kl7uw.com
"Kits made by KL7UW"
Dubus Mag business:
dubususa@xxxxx.xxx
------------------------------
Message: 6
Date: Wed, 31 Aug 2016 19:45:13 -0500
From: "Glenn Miller - AA5PK" <aa5pk@xxxxxxxxxx.xxx>
To: "Gerald Payton" <gp_ab5r@xxxxxxx.xxx>, "James R. La Frieda"
<lafrieda@xxxxxxxxx.xxx>, "AMSAT BBS" <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Satellite Radios
Message-ID: <227178251BEE4D79BCDDD4C4FA6D2DBB@xxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=response
Let's not forget the IC-202S and IC-402 :-)
Glenn
AA5PK
-----Original Message-----
From: James R. La Frieda
Sent: Wednesday, August 31, 2016 6:56 PM
To: Gerald Payton
Cc: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Satellite Radios
Hi Jerry,
Your IC-2730 can be used for satellites, and the same is true for those
of us-who have been licensed for over 60 years and who are now in our
mid to late 70's -
who are still using - for satellites- some of the earlier ICOM
multi-mode gear, such as the ICOM 211, ICOM 251A and ICOM 451A, which
are frequently sold on
E-Bay. e.g. for $100 -to - $200 :
http://www.ebay.com/itm/ICOM-IC-451A-430-MHz-MULTI-MODE-FM-SSB-CW-TRANSCEIVER-
/381751947130?hash=item58e2306f7a:g:bigAAOSwxg5Xw2Op
And, some of us - who are in our late 70's- are still using the ancient
dual band, dual receive HT that is known as the Yaesu FT-470 for
satellites.
In sum, it's wonderful to be able to work satellites with a Yaesu HT and
ICOM multi-mode VHF/UHF transceivers that still work, even though they
are over 40 years old.
All the Best,
73, Jim (N6MV)
On 8/31/2016 2:29 PM, Gerald Payton wrote:
> EXCLUDING the radios used for portable and with handheld antennas, what
are the radios used for FIXED operations? I have
> my IC-2730, which I understand can be used, but wonder what other radio
options are there out there. Are the older
> second-hand radios (hard to find) the answer?
>
>
> Any comments appreciated.
>
>
> 73,
>
> Jerry AB5R
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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@xxxxx.xxx. 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: Wed, 31 Aug 2016 13:59:09 -0700
From: Roger <ai7rogerroger@xxxxx.xxx>
To: Scott <scott23192@xxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Very Small-Scale Solar Power for Ham Use?
Message-ID:
<CAEahN0LN3sUP-C0RXNiQg7Tz3j-Aw+CPf7845B--1ayKyMTuAw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
What Bob said,
or you can go to TESSCO website and I'm sure others and they have off the
shelf solutions.
73, Roger
W7TZ
CN83ia
On Wed, Aug 31, 2016 at 1:28 PM, Robert Bruninga <bruninga@xxxx.xxx> wrote:
> It is very easy to design a stand-alone solar power system. Just add up
> the
> power requirements of your loads, taking into the account the duty cycles.
> Then multiply by 24 hours to come up with your daily AMP-hour requirement.
>
> Then get a battery that is probably 5 or more times that capacity (to live
> 5
> days with bad weather and to minimize daily discharge). Then get a solar
> panel that can provide at least 8 times that Amp rating (because you can
> only assume about 4 solid sun hours a day (which has to provide 24 hours of
> power)) and this gives you a factor of 2 margin. Something like that
> anyway.
>
> Bob, WB4APR
>
> -----Original Message-----
> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Scott
> Sent: Wednesday, August 31, 2016 3:20 PM
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Very Small-Scale Solar Power for Ham Use?
>
>
> Greetings to everyone.
>
> This is only satellite-related in the most peripheral sense, but since much
> of our equipment requires electricity, I hope it?s a valid question.
>
> I?m normally very good with Google searches, but for some reason I?m coming
> up empty on this one.
>
> In the U.S. (and probably elsewhere), it?s common now to see highway signs
> and stand-alone telemetry installations installed with a small solar panel
> and a utility box that I assume protects a charge regulator and battery for
> night operations.
>
> I have an interest in duplicating this type of setup for experimental
> antenna installations that are too far from my house to conveniently run
> normal power, as well as for portable use.
>
> I don?t know if the installations that I see on the highway are turn-key
> setups (solar panel, charge controller, battery) or if they have been
> pieced
> together sized to fit the need.
>
> Naturally, the question of power requirements would affect the response
> from
> those of you who might be particularly knowledgeable about this kind of
> thing. I?m talking about the low end... just enough to power things like a
> wi-fi router, USB webcam, or perhaps a small notebook PC charger or
> Raspberry Pi... that kind of thing. At the high end, perhaps a small
> AZ-only TV rotator which would be a VERY intermittent draw.
>
> Anyway, if anyone is already providing for small power needs in this
> fashion, or is familiar with the installs that I see along the road, I sure
> would appreciate your input.
>
> Further, one would assume that it would be cheaper to DIY this... so
> recommendations for small outdoor solar/charger/battery discrete components
> would of course be helpful, too.
>
> Thanks!
>
> -Scott, K4KDR
> Montpelier, VA USA
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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@xxxxx.xxx. 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: 8
Date: Thu, 1 Sep 2016 08:57:07 +0100
From: "Simon Brown" <simon@xxxxxxxxx.xxx>
To: "'Amsat BB'" <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Satellite Radios
Message-ID: <003401d20426$6fb29a90$4f17cfb0$@xxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Jerry,
If you're adventurous you could use a SDR on receive (Airspy, SDRplay,
FUNcube, ...) and any radio which transmits the desired mode on 2m / 70cms.
Myself I'm using an Airspy / FT-991 combination, in a week or two it'll be
fully automated by the computer.
Simon Brown, GK4ELI
http://sdr-radio.com
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Gerald
Payton
EXCLUDING the radios used for portable and with handheld antennas, what are
the radios used for FIXED operations? I have my IC-2730, which I understand
can be used, but wonder what other radio options are there out there. Are
the older second-hand radios (hard to find) the answer?
------------------------------
Message: 9
Date: Thu, 1 Sep 2016 12:25:04 +0300
From: Jari A <oh2fqv@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Satellite Radios
Message-ID:
<CAEVbYfkQVR_hiMb+eQ0bCcE4MNnPG26f5KuyToHL_1JHkDXP-g@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Kenwood TS-711 (2m) and TS-811 (70cm). They has PC control possibility
Also TM-255 and TM-455 are good for basestation use, without external
control.
:Jari / OH2FQV
On Thu, Sep 1, 2016 at 11:17 AM, Jari A <oh2fqv@xxxxx.xxx> wrote:
> Kenwood TS-711 (2m) and TS-811 (70cm). Also TM-255 and TM-455 are good for
> basestation use.
>
> :Jari / OH2FQV
>
> On Thu, Sep 1, 2016 at 12:29 AM, Gerald Payton <gp_ab5r@xxxxxxx.xxx>
> wrote:
>
>> EXCLUDING the radios used for portable and with handheld antennas, what
>> are the radios used for FIXED operations? I have my IC-2730, which I
>> understand can be used, but wonder what other radio options are there out
>> there. Are the older second-hand radios (hard to find) the answer?
>>
>>
>> Any comments appreciated.
>>
>>
>> 73,
>>
>> Jerry AB5R
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. 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: Thu, 1 Sep 2016 10:00:27 -0500
From: Alan <wa4sca@xxxxx.xxx>
To: "AMSAT-BB" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] SpaceX Launch Pad Test Explosion
Message-ID: <000201d20461$9393ee10$babbca30$@xxxxx.xxx>
http://motherboard.vice.com/read/spacex-loses-rocket-200-million-satellite-in-
test-fire-explosion
73s,
Alan
WA4SCA
-----------------------------------
Keep Calm and Carry On
------------------------------
Message: 11
Date: Thu, 1 Sep 2016 12:01:52 -0400
From: jeffory broughton <jefforybroughton@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] (no subject)
Message-ID:
<CACm2je0D6VKWC=J5QS-z5s-3AZ-m8hnnz4s8DnXQNJa6eKyBdw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
I have had several FT 847 radios.Great low cost choice and works well with
satpc32.However ,for just a few dollars
More get a used IC910. Much better rx sens with a lower noise figure.Also
REAL
DNR circuitry.Make listening for long periods a pleasure,not so exhausting.
Also if you compare the specs of the IC910 and IC 9100 uhf and vhf
SECTIONS, you will see they are IDENTICAL!
jeff broughton
------------------------------
Message: 12
Date: Thu, 1 Sep 2016 18:05:11 +0200 (CEST)
From: on4cjq@xxxxxxx.xx
To: Gerald Payton <gp_ab5r@xxxxxxx.xxx>
Cc: Amsat BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Satellite Radios
Message-ID:
<1962019414.257190125.1472745911033.JavaMail.root@xxxxxxx.xx>
Content-Type: text/plain; charset=utf-8
Hi Jerry
I'm active again on satellite a lot, using my old TS-790,most of the time
manuel tuned, sometimes via pc. From time to time a change to TM255+455(
which can be tuned via pc homemade interface which is almost finished, or
Yaesu FT290+FT790,both with add-on ampli's from +-25w,manuel tuned.
Antennas in use: commercial 2m and 70cm crossyagis with pol.switch, homemade
crossyagis for 2,70 and 23. Just looking what is best for rx AO-7 mode A.
Look for TS-2000, FT-847,FT817 with amsat interface(arrl),IC-910...
Good hunting.
73,
Jerry,ON4CJQ
----- Oorspronkelijk bericht -----
Van: "Gerald Payton" <gp_ab5r@xxxxxxx.xxx>
Aan: "Amsat BB" <amsat-bb@xxxxx.xxx>
Verzonden: Woensdag 31 augustus 2016 23:29:41
Onderwerp: [amsat-bb] Satellite Radios
EXCLUDING the radios used for portable and with handheld antennas, what are
the radios used for FIXED operations? I have my IC-2730, which I understand
can be used, but wonder what other radio options are there out there. Are
the older second-hand radios (hard to find) the answer?
Any comments appreciated.
73,
Jerry AB5R
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. 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: 13
Date: Thu, 1 Sep 2016 11:17:17 -0500
From: Zach Metzinger <zmetzing@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] (no subject)
Message-ID: <fe20c928-7b8f-59a0-a1a7-02bee62adaac@xxxxx.xxx>
Content-Type: text/plain; charset=windows-1252
On 09/01/16 11:01, jeffory broughton wrote:
> I have had several FT 847 radios.Great low cost choice and works well with
> satpc32.However ,for just a few dollars
> More get a used IC910. Much better rx sens with a lower noise figure.Also
> REAL
> DNR circuitry.Make listening for long periods a pleasure,not so exhausting.
> Also if you compare the specs of the IC910 and IC 9100 uhf and vhf
> SECTIONS, you will see they are IDENTICAL!
I wouldn't focus on noise figure at the receiver, unless you happen to
have 1' of cable between the rig and your antenna. Instead, I'd put a
bias-T-powered LNA at the antenna to preserve your SNR (Friis formula).
Having recently built a U310-based LNA, I can say that a single night's
work of soldering and testing pays off well. Total parts cost was in the
$5 range.
I plan to build a new LNA based on a pHEMT just for fun. Only a couple
of bucks from Digikey. Why settle for 1.0dB when you can potentially get
0.25dB! :-)
--- Zach
N0ZGO
------------------------------
Message: 14
Date: Thu, 1 Sep 2016 16:29:27 +0000
From: Gerald Payton <gp_ab5r@xxxxxxx.xxx>
To: Amsat BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Satellite Radios
Message-ID:
<MWHPR11MB195287B46198DA5564439508D0E20@xxxxxxxxxxxxx.xxxxxxxx.xxxx.xxxxxxx.xx
x>
Content-Type: text/plain; charset="iso-8859-1"
Thanks ALL of you giving you comments and suggestions. I kept a tally sheet
to see which showed up the most. Of course, it's like "which car do you
like question." (smile) Seriously, your answers have been helpful.
Generally, I like a "table top" type radio as compared to the smaller mobile
units. That's just MY "druthers."
Zach, I appreciate you input on the FunCube Pro +. I do not have one, but
have played with the other cheaper types and several software packages.
Currently, I have settled with a SDRPlay RSP. What is the advantage(s) of
the FunCube dongle?
Again, thanks to everyone chipping in with their 2 cents. It helps me,
maybe others lurking.
73,
Jerry AB5R
------------------------------
Subject: Digest Footer
_______________________________________________
Sent via amsat-bb@xxxxx.xxx.
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End of AMSAT-BB Digest, Vol 11, Issue 279
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