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CX2SA > SATDIG 14.05.20 20:15l 842 Lines 28246 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: MFJ-916BMN duplexer (Don KB2YSI)
2. Re: Huskysat in safe mode (Stephen E. Belter)
3. Relayed sked request (Jari A)
4. Re: MFJ-916BMN duplexer (KI7UNJ Tucker)
5. Re: MFJ-916BMN duplexer (Paul Stoetzer)
6. Huskysat in safe mode (Roy Dean)
7. Re: HUSKYSAT-1 LOTW? (Nick KE8AKW)
8. Huskysat in safe mode (Roy Dean)
9. Re: ANS-135 AMSAT News Service Special Bulletin - HuskySat-1
Designated HuskySat-OSCAR 107 (HO-107) (Mark Hammond)
10. Re: MFJ-916BMN duplexer (Michael Walker)
11. Re: MFJ-916BMN duplexer (GEO Badger)
----------------------------------------------------------------------
Message: 1
Date: Thu, 14 May 2020 11:39:35 -0400
From: Don KB2YSI <kb2ysi@?????.???>
To: Michael Walker <va3mw@??????????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] MFJ-916BMN duplexer
Message-ID:
<CAAJiE8OHLHBL+i3HTQyO09+eAthf0G4hgTThsB-tLJ-sqwo=3A@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
I and other have pushed 20-25w through one without issue.
On Thu, May 14, 2020, 11:37 Michael Walker <va3mw@??????????.???> wrote:
> Just to mention on the BLP-200+, you can't transmit through it as it has a
> 0.5 watt maximum RF power. It is designed for a receive-only lines.
>
> Mike va3mw
>
> On Thu, May 14, 2020 at 11:32 AM Don KB2YSI via AMSAT-BB <
> amsat-bb@?????.???> wrote:
>
>> I have used a MFJ-916B in my portable setup and it was the biggest
>> improvement I have made to my setup. I have since moved to a Mini-Circuits
>> BLP-200+ as I use 2 radios verse a single full duplex radio.
>>
>> On Thu, May 14, 2020 at 10:14 AM BeetleJerald Oliver via AMSAT-BB <
>> amsat-bb@?????.???> wrote:
>>
>> > I am still having problems with the 9700 on Mode J. Has anyone yet used
>> > the MFJ-916BMN duplexer on their system? I like the fact that it is
>> > designed for outdoor use and can be mounted to the mast. I have a comet
>> > CF-416, but would have to build a waterproof box for it if used and
>> left on
>> > the tower....Any thoughts
>> > 73
>> > Jerry
>> > KJ4EU
>> > _______________________________________________
>> > 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
>> >
>>
>>
>> --
>> 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: https://www.amsat.org/mailman/listinfo/amsat-bb
>>
>
------------------------------
Message: 2
Date: Thu, 14 May 2020 15:46:55 +0000
From: "Stephen E. Belter" <seb@??????.???>
To: Kevin <wa7fwf@?????.???>, "amsat-bb@?????.????
<amsat-bb@?????.???>
Subject: Re: [amsat-bb] Huskysat in safe mode
Message-ID: <57EB0069-D65C-45E8-850F-6BD3C313FE61@??????.???>
Content-Type: text/plain; charset="utf-8"
Kevin,
I'm sure you were correct about safe mode. More than likely one of our
crack control stations brought HO-107 back to life!
73, Steve N9IP
--
Steve Belter, seb@??????.???
?On 5/14/20, 11:40 AM, "AMSAT-BB on behalf of Kevin via AMSAT-BB"
<amsat-bb-bounces@?????.??? on behalf of amsat-bb@?????.???> wrote:
Well what can I say other than last night it was transmitting about once
every 2 mins and the mode said "safe", this morning I see the mode is
back to "health"
Maybe I was dreaming.
Kevin
On 5/14/2020 5:10 AM, Roy Dean via AMSAT-BB wrote:
>> Huskysat appears to be in safe mode. Kevin WA7FWF
>
> Interesting that the status block shows "Safe Mode: False"
>
> --Roy
> K3RLD
> _______________________________________________
> 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: Thu, 14 May 2020 18:56:43 +0300
From: Jari A <oh2fqv@?????.???>
To: AMSAT-BB <amsat-bb@?????.???>
Subject: [amsat-bb] Relayed sked request
Message-ID:
<CAEVbYfncJmpkgW6--rF8MUvtYzkT4O6p49-A-FCB+akKAADqwQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Hi Guys,
Kob, E21EJC is excited to work via RS-44.
Bangkok OK03FP86MH
He would be very happy to find stations to work with.
Done three qsos with him at extreme distance 7898km / 4907 miles.
He has good station for long distance qsos.
Please contact him at:
e21ejc (a) yahoo.com
Best regards and wishes to avoid corona
: Jari / OH2FQV
Ps. open for ssb/fm skeds as well... kp20mf87ss
------------------------------
Message: 4
Date: Thu, 14 May 2020 08:57:00 -0700
From: KI7UNJ Tucker <ki7unj@?????.???>
To: Michael Walker <va3mw@??????????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] MFJ-916BMN duplexer
Message-ID:
<CAPFr_UnaN_9bhkB+ADTy0swxWReYpyf41DmOes0M6qBEUdmOXg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Mike,
The 0.5w while is on the spec sheet for the BLP.... many of us use it and
use way more than 0.5w.
https://twitter.com/w8lid/status/1172144221081542657?s=20
As someone who has an IC-9700, I do not suffer desene with mode J (and
don't use the BLP on my setup). I'm betting those who do have J-Mode
issuses have 1 of 2 problems 1) higher SWR or 2) running to much power.
As I stated in a previous e-mail:
I have to say I'm not getting desense with my IC-9700, unless I'm using
more power than is needed or should be using on the SSB Sats.
Maybe try to lower your power? RS-44 can easily be worked at around 2% (2w)
power and I work SO-50 at 0-3% every time (500mw-3w)
On Thu, May 14, 2020 at 8:48 AM Michael Walker via AMSAT-BB <
amsat-bb@?????.???> wrote:
> Just to mention on the BLP-200+, you can't transmit through it as it has a
> 0.5 watt maximum RF power. It is designed for a receive-only lines.
>
> Mike va3mw
>
> On Thu, May 14, 2020 at 11:32 AM Don KB2YSI via AMSAT-BB <
> amsat-bb@?????.???>
> wrote:
>
> > I have used a MFJ-916B in my portable setup and it was the biggest
> > improvement I have made to my setup. I have since moved to a
> Mini-Circuits
> > BLP-200+ as I use 2 radios verse a single full duplex radio.
> >
> > On Thu, May 14, 2020 at 10:14 AM BeetleJerald Oliver via AMSAT-BB <
> > amsat-bb@?????.???> wrote:
> >
> > > I am still having problems with the 9700 on Mode J. Has anyone yet
> used
> > > the MFJ-916BMN duplexer on their system? I like the fact that it is
> > > designed for outdoor use and can be mounted to the mast. I have a
> comet
> > > CF-416, but would have to build a waterproof box for it if used and
> left
> > on
> > > the tower....Any thoughts
> > > 73
> > > Jerry
> > > KJ4EU
> > > _______________________________________________
> > > 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
> > >
> >
> >
> > --
> > 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: 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
>
--
*Casey Tucker KI7UNJ*
https://twitter.com/KI7UNJ
------------------------------
Message: 5
Date: Thu, 14 May 2020 11:59:37 -0400
From: Paul Stoetzer <n8hm@????.???>
To: Michael Walker <va3mw@??????????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] MFJ-916BMN duplexer
Message-ID:
<CABzOSOqmoELCi_e7j9nLwQaOjcAB1HhPaoUjH3FTYtg_aeP4YQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
I put 30 watts through mine all the time. It's had 70 watts put
through it and survived.
W8LID got an explanation of the power rating from the manufacturer.
I'll see if he can post it here.
73,
Paul, N8HM
On Thu, May 14, 2020 at 11:44 AM Michael Walker via AMSAT-BB
<amsat-bb@?????.???> wrote:
>
> Just to mention on the BLP-200+, you can't transmit through it as it has a
> 0.5 watt maximum RF power. It is designed for a receive-only lines.
>
> Mike va3mw
>
> On Thu, May 14, 2020 at 11:32 AM Don KB2YSI via AMSAT-BB
<amsat-bb@?????.???>
> wrote:
>
> > I have used a MFJ-916B in my portable setup and it was the biggest
> > improvement I have made to my setup. I have since moved to a Mini-Circuits
> > BLP-200+ as I use 2 radios verse a single full duplex radio.
> >
> > On Thu, May 14, 2020 at 10:14 AM BeetleJerald Oliver via AMSAT-BB <
> > amsat-bb@?????.???> wrote:
> >
> > > I am still having problems with the 9700 on Mode J. Has anyone yet used
> > > the MFJ-916BMN duplexer on their system? I like the fact that it is
> > > designed for outdoor use and can be mounted to the mast. I have a comet
> > > CF-416, but would have to build a waterproof box for it if used and left
> > on
> > > the tower....Any thoughts
> > > 73
> > > Jerry
> > > KJ4EU
> > > _______________________________________________
> > > 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
> > >
> >
> >
> > --
> > 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: https://www.amsat.org/mailman/listinfo/amsat-bb
> >
> _______________________________________________
> Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
expressed
> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 6
Date: Thu, 14 May 2020 12:07:52 -0400
From: Roy Dean <royldean@?????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] Huskysat in safe mode
Message-ID:
<CADGPg2uc5NLM8MYcDiYKb==yn3-SQsfGMD0naF90Zj+24JQX4A@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
>
> Well what can I say other than last night it was transmitting about once
> every 2 mins and the mode said "safe", this morning I see the mode is
> back to "health" Maybe I was dreaming. Kevin
I don't think you were dreaming. When I checked this morning, the first
line of the HuskySat Telemetry page (
https://www.amsat.org/tlm/health.php?id=6&port=) said "Safe", but the "Safe
Mode" indicator in the Spacecraft Status block said "False". So something
was going on.....
--Roy
K3RLD
------------------------------
Message: 7
Date: Thu, 14 May 2020 12:29:11 -0400
From: Nick KE8AKW <nicholasmahr1@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] HUSKYSAT-1 LOTW?
Message-ID:
<CAGu+VYtryXVY0pdc5e5tGwaRfcb9NJ5FfeEqGoJ4LsouFGFdaw@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
It hasent been put into LOTW yet. It only just officially got its OSCAR
number which makes its legally a Amatuer Radio Satellite. I am sure it will
be added very soon.
73 Nick KE8AKW
------------------------------
Message: 8
Date: Thu, 14 May 2020 12:48:08 -0400
From: Roy Dean <royldean@?????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] Huskysat in safe mode
Message-ID:
<CADGPg2u3zkdM0aAWy183nD-e7=a-1H634bZUDp-ChArBuw5asA@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
https://network.satnogs.org/observations/2201621/
It appears to have changed modes at about 9:40z this morning....
I don't think you were dreaming. When I checked this morning, the first
> line of the HuskySat Telemetry page (
> https://www.amsat.org/tlm/health.php?id=6&port=) said "Safe", but the
> "Safe
> Mode" indicator in the Spacecraft Status block said "False". So something
> was going on..... --Roy
> K3RLD
------------------------------
Message: 9
Date: Thu, 14 May 2020 13:11:25 -0400
From: Mark Hammond <marklhammond@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] ANS-135 AMSAT News Service Special Bulletin -
HuskySat-1 Designated HuskySat-OSCAR 107 (HO-107)
Message-ID: <740f947a-4fa5-7a9f-e647-6426aa37c851@?????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
Yay!? This is awesome.? Seem like not long ago it was in the "teens."?
Lots of growth.? Thanks to the folks making this happen.?? Great example
of a fruitful university and AMSAT partnership.?? Hope there are many more.
Mark N8MH
On 5/14/2020 10:51 AM, Paul Stoetzer via AMSAT-BB wrote:
> AMSAT NEWS SERVICE SPECIAL BULLETIN
> ANS-135
>
> The AMSAT News Service bulletins are a free, weekly news and infor-
> mation service of AMSAT North America, The Radio Amateur Satellite
> Corporation. ANS publishes news related to Amateur Radio in Space
> including reports on the activities of a worldwide group of Amateur
> Radio operators who share an active interest in designing, building,
> launching and communicating through analog and digital Amateur Radio
> satellites.
>
> The news feed on http://www.amsat.org publishes news of Amateur
> Radio in Space as soon as our volunteers can post it.
>
> Please send any amateur satellite news or reports to:
> ans-editor at amsat.org.
>
> You can sign up for free e-mail delivery of the AMSAT News Service
> Bulletins via the ANS List; to join this list see:
> http://www.amsat.org/mailman/listinfo/ans
>
> In this edition:
>
> * HuskySat-1 Designated HuskySat-OSCAR 107 (HO-107)
>
> SB SAT @ AMSAT $ANS-135
> ANS-135 AMSAT News Service Special Bulletin
>
> AMSAT News Service Bulletin 135.01
> From AMSAT HQ KENSINGTON, MD.
> DATE May 14, 2020
> To All RADIO AMATEURS
> BID: $ANS-135.01
>
> HuskySat-1 Designated HuskySat-OSCAR 107 (HO-107)
>
> On November 2, 2019, the HuskySat-1 cubesat launched on the Cygnus NG-
> 12 mission from Wallops Island, Virginia, USA. The satellite was con-
> structed by the Husky Satellite Lab at the University of Washington,
> and utilizes an AMSAT-constructed radio system for primary communica-
> tions. Deployed from the Cygnus vehicle on January 31, 2020 after de-
> parting the ISS, HuskySat-1 began a 3-month educational mission. Upon
> completion of that mission, the satellite began operation of a V/u
> linear transponder in amateur service.
>
> At the request of the Husky Satellite Lab and AMSAT teams, AMSAT here-
> by designates HuskySat-1 as HuskySat-OSCAR 107 (HO-107). We congratu-
> late the Husky Satellite Lab, thank them for their contribution to the
> amateur satellite community, and wish them continued success on this
> and future projects.
>
> 73,
>
> Drew Glasbrenner, KO4MA
> AMSAT VP Operations / OSCAR Number Administrator
>
> [ANS thanks Drew Glasbrenner, KO4MA, AMSAT Vice President - Operations
> for the above information]
>
> /EX
>
> In addition to regular membership, AMSAT offers membership in the
> President's Club. Members of the President's Club, as sustaining
> donors to AMSAT Project Funds, will be eligible to receive addi-
> tional benefits. Application forms are available from the AMSAT
> Office.
>
> 73 and Remember to help Keep Amateur Radio in Space,
>
> This week's ANS Contributing Editor,
>
> Paul Stoetzer, N8HM
> n8hm at amsat dot org
> _______________________________________________
> 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
--
Mark L. Hammond [N8MH]
------------------------------
Message: 10
Date: Thu, 14 May 2020 13:40:24 -0400
From: Michael Walker <va3mw@??????????.???>
To: Paul Stoetzer <n8hm@????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] MFJ-916BMN duplexer
Message-ID:
<CA+33ts4MMxqX85SYpmXP_DB4XP8eam+zpuCtdrusozYYXuR1SQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
If it works, awesome! Problem solved.
I tend to trust the data the designer publishes first. After all, they
know the limit of the components they use.
I would be concerned that any heat generated by the RF power would change
the specs of the components used and that may result in more attenuation
and may change the design specs. That could also result in higher SWR
values.
If I had one, I would sweep it to make sure it still works as it should.
Maybe someone who has a tracking generator has done that already.
There is a big difference between 0.5 watts and 25 watts.
500mwatts is about 14 V P-P and 25 watts is 100 V P-P
Mike va3mw
On Thu, May 14, 2020 at 11:59 AM Paul Stoetzer <n8hm@????.???> wrote:
> I put 30 watts through mine all the time. It's had 70 watts put
> through it and survived.
>
> W8LID got an explanation of the power rating from the manufacturer.
> I'll see if he can post it here.
>
> 73,
>
> Paul, N8HM
>
> On Thu, May 14, 2020 at 11:44 AM Michael Walker via AMSAT-BB
> <amsat-bb@?????.???> wrote:
> >
> > Just to mention on the BLP-200+, you can't transmit through it as it has
> a
> > 0.5 watt maximum RF power. It is designed for a receive-only lines.
> >
> > Mike va3mw
> >
> > On Thu, May 14, 2020 at 11:32 AM Don KB2YSI via AMSAT-BB <
> amsat-bb@?????.???>
> > wrote:
> >
> > > I have used a MFJ-916B in my portable setup and it was the biggest
> > > improvement I have made to my setup. I have since moved to a
> Mini-Circuits
> > > BLP-200+ as I use 2 radios verse a single full duplex radio.
> > >
> > > On Thu, May 14, 2020 at 10:14 AM BeetleJerald Oliver via AMSAT-BB <
> > > amsat-bb@?????.???> wrote:
> > >
> > > > I am still having problems with the 9700 on Mode J. Has anyone yet
> used
> > > > the MFJ-916BMN duplexer on their system? I like the fact that it is
> > > > designed for outdoor use and can be mounted to the mast. I have a
> comet
> > > > CF-416, but would have to build a waterproof box for it if used and
> left
> > > on
> > > > the tower....Any thoughts
> > > > 73
> > > > Jerry
> > > > KJ4EU
> > > > _______________________________________________
> > > > 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
> > > >
> > >
> > >
> > > --
> > > 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: 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: 11
Date: Thu, 14 May 2020 18:01:35 +0000 (UTC)
From: GEO Badger <w3ab@?????.???>
To: Paul Stoetzer <n8hm@????.???>, Michael Walker
<va3mw@??????????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] MFJ-916BMN duplexer
Message-ID: <1431753566.319376.1589479295687@????.?????.???>
Content-Type: text/plain; charset=UTF-8
The manufacturer's power rating for this part is much higher than a typical,
operative term, sat radio will put out. I use the Comet CF-360 with 100W and
have experienced no heating of the duplexer.
It is however, not to be used outdoors where it can be exposed to
precipitation. If used outdoors an easily made enclosure can be made from a
tupperware or like product. I use the plastic takeout containers we get here
in coastal CenCal. Right now I have a gazillion of them.? lol
---?
Ciao baby, catch you on the flip side??
73 de W3AB/GEO ???
http://www.w3ab.org
You can say "over", you can say "out", you just can't say "over and out".
On Thursday, May 14, 2020, 10:44:36 AM PDT, Michael Walker via AMSAT-BB
<amsat-bb@?????.???> wrote:
If it works, awesome!? Problem solved.
I tend to trust the data the designer publishes first.? After all, they
know the limit of the components they use.
I would be concerned that any heat generated by the RF power would change
the specs of the components used and that may result in more attenuation
and may change the design specs.? That could also result in higher SWR
values.
If I had one, I would sweep it to make sure it still works as it should.
Maybe someone who has a tracking generator has done that already.
There is a big difference between 0.5 watts and 25 watts.
500mwatts is about 14 V P-P and 25 watts is 100 V P-P
Mike va3mw
On Thu, May 14, 2020 at 11:59 AM Paul Stoetzer <n8hm@????.???> wrote:
> I put 30 watts through mine all the time. It's had 70 watts put
> through it and survived.
>
> W8LID got an explanation of the power rating from the manufacturer.
> I'll see if he can post it here.
>
> 73,
>
> Paul, N8HM
>
> On Thu, May 14, 2020 at 11:44 AM Michael Walker via AMSAT-BB
> <amsat-bb@?????.???> wrote:
> >
> > Just to mention on the BLP-200+, you can't transmit through it as it has
> a
> > 0.5 watt maximum RF power.? It is designed for a receive-only lines.
> >
> > Mike va3mw
> >
> > On Thu, May 14, 2020 at 11:32 AM Don KB2YSI via AMSAT-BB <
> amsat-bb@?????.???>
> > wrote:
> >
> > > I have used a MFJ-916B in my portable setup and it was the biggest
> > > improvement I have made to my setup. I have since moved to a
> Mini-Circuits
> > > BLP-200+ as I use 2 radios verse a single full duplex radio.
> > >
> > > On Thu, May 14, 2020 at 10:14 AM BeetleJerald Oliver via AMSAT-BB <
> > > amsat-bb@?????.???> wrote:
> > >
> > > > I am still having problems with the 9700 on Mode J.? Has anyone yet
> used
> > > > the MFJ-916BMN duplexer on their system?? I like the fact that it is
> > > > designed for outdoor use and can be mounted to the mast.? I have a
> comet
> > > > CF-416, but would have to build a waterproof box for it if used and
> left
> > > on
> > > > the tower....Any thoughts
> > > > 73
> > > > Jerry
> > > > KJ4EU
> > > > _______________________________________________
> > > > Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum
> available
> > > > to all interested persons worldwide without requiring membership.
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> > > > expressed
> > > > are solely those of the author, and do not reflect the official
> views of
> > > > AMSAT-NA.
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> > > >
> > >
> > >
> > > --
> > > 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.
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> > > AMSAT-NA.
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> > >
> > _______________________________________________
> > Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available
> > to all interested persons worldwide without requiring membership.
> Opinions expressed
> > are solely those of the author, and do not reflect the official views of
> AMSAT-NA.
> > Not an AMSAT-NA member? Join now to support the amateur satellite
> program!
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>
_______________________________________________
Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available
to all interested persons worldwide without requiring membership. Opinions
expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Subject: Digest Footer
_______________________________________________
Sent via amsat-bb@?????.???.
AMSAT-NA makes this open forum available to all interested persons worldwide
without requiring membership. Opinions expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
Not an AMSAT member? Join now to support the amateur satellite program!
https://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
End of AMSAT-BB Digest, Vol 15, Issue 161
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