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CX2SA > SATDIG 08.01.19 03:23l 626 Lines 22582 Bytes #999 (0) @ WW
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Sent: 190108/0118Z @:CX2SA.SAL.URY.SOAM #:62401 [Salto] FBB7.00e $:AMSATBB149
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: KR400 controller question (Zach Metzinger)
2. Re: KR400 controller question (W3AB/GEO)
3. Trade, Elecraft K2 for TH-D72A (Doug Faunt N6TQS +1-510-717-1197)
4. Antenna and Doppler Question (NA1SA Loon)
5. Re: Antenna and Doppler Question (jim@?????.????
6. FT-837 port config question (Mark Coulthurst)
7. Re: Antenna and Doppler Question (Greg D)
8. Re: FT-837 port config question (Alan)
9. Re: FT-837 port config question (Mark Coulthurst)
10. Experiences on Yaesu FT-712 for 70cm & Satellite?
(Pavel Milanes Costa)
11. HS_Soundmodem & MinXSS 2 (Gustavo Carpignano)
12. UPDATE (James McIrvin)
----------------------------------------------------------------------
Message: 1
Date: Mon, 7 Jan 2019 10:45:10 -0600
From: Zach Metzinger <zmetzing@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] KR400 controller question
Message-ID: <8ae91d88-3d2d-0c88-cd5b-dee7d1649602@?????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
On 1/7/19 3:28 AM, Paul wrote:
> Thanks George, I tried it with and without the resistor and couldn't see
> any difference with the LEDs so wondered if it was just put in to
> increase the life of the bulb. I'll leave them in and see how we go.
>
> The controllers now look like this adding a splash of colour to the
> shack. http://www.ukdx.org.uk/tv/rotator/400s.jpg
Paul,
Given this circuit:
Vsupply --- 1N4001>| --- /\/\/\/\ --- LED>| --- "Gnd"
You can calculate the proper resistor value with the formula:
Vsupply - Vf - Vdiode
----------------------
Iled
Vf is the LED forward voltage, Vdiode is the forward voltage of the
1N4001. Putting some numbers in there for a typical application with the
CREE C503B-RAN-CZ0C0AA2):
(28 - 0.7 - 2.1) / .020 = 1260 ohm
The absolute maximum rating of this LED is 50mA, so we can round down to
a 1.2kohm resistor safely. No need for additional resistors beyond this one.
To add additional LEDs, you can either put them in series and add up all
the forward voltages in that equation, or you can go parallel and add
pairs of resistor+LED.
Since you've got a half-wave rectifier, you might want to add a
capacitor after the 1N4001 to smooth out the ripple (and the obnoxious
flickering). A good value would be about 10uF.
A more efficient way to drive LEDs is to use an IC, which can also
provide PWM dimming via digital or analog (knob) input.
https://www.maximintegrated.com/en/products/power/led-drivers/MAX1570.html
73,
--- Zach
N0ZGO
------------------------------
Message: 2
Date: Mon, 07 Jan 2019 09:56:40 -0800
From: W3AB/GEO <w3ab@?????.???>
To: Paul <paul@????.???.??>
Cc: W3AB/GEO via AMSAT-BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] KR400 controller question
Message-ID: <5e504d50-e732-4042-ad7c-ca94377d0f98@?????.???>
Content-Type: text/plain; charset=UTF-8
Nice Paul. Very colorful. Your LED's should last forever.
I converted my Yeasu controllers to LED's years ago but have now gone to
RS-232 controllers which use a LCD panel. I'm prepping my station for remote
control.
?___
Sent from my two way wrist watch
73 de W3AB/GEO?
On Jan 7, 2019, 01:29, at 01:29, Paul <paul@????.???.??> wrote:
>Thanks George, I tried it with and without the resistor and couldn't
>see
>any difference with the LEDs so wondered if it was just put in to
>increase the life of the bulb. I'll leave them in and see how we go.
>
>The controllers now look like this adding a splash of colour to the
>shack. http://www.ukdx.org.uk/tv/rotator/400s.jpg
>
>Paul
>Sussex Coast. JO00
>
>On 06/01/2019 22:33, W3AB/GEO wrote:
>> Paul,
>>
>> It appears that one unit uses 28V to? light the bulb & the other uses
>
>> 14V. If the mod is for the unit that is 14V, leave the resistor in
>the
>> circuit.
>>
>> ___
>> Sent from my two way wrist watch
>> 73 de W3AB/GEO
>> On Jan 6, 2019, at 03:26, Paul <paul@????.???.??
>> <mailto:paul@????.???.??>> wrote:
>>
>> As both my KR400 controllers have blown bulbs I've modified them
>to use
>> LEDs as per https://bit.ly/2TzeHud There is however a small
>difference
>> that I'd like an opinion on as I'm not very electronically
>minded.
>>
>> Eddie modified his KR-400RC however on my KR-400 controllers
>there is an
>> additional 100R between the transformer and bulb. What is its
>purpose
>> and should I leave it in or remove it when adding the diode,
>limiting
>> resistor and LEDs shown in the mod?
>>
>> CCT grabs showing the difference https://bit.ly/2FbKIo5
>>
>> Paul
>> Sussex Coast. JO00
>_______________________________________________
>Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available
>to all interested persons worldwide without requiring membership.
>Opinions expressed
>are solely those of the author, and do not reflect the official views
>of AMSAT-NA.
>Not an AMSAT-NA member? Join now to support the amateur satellite
>program!
>Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 3
Date: Mon, 7 Jan 2019 10:37:40 -0800
From: "Doug Faunt N6TQS +1-510-717-1197" <dougfaunt@?????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] Trade, Elecraft K2 for TH-D72A
Message-ID:
<CAHirYAipq082-EWZLPLMyQvwpwizq1aAXdf-Rnx80qHOLvSzxw@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
I have a K2-100, last used for the T33C DXpedition IIRC. It's got a couple
of mods for audio out on the mic connector and an IF output for a band
display.
I'd like to get a D72 for portable sat work.
73, Doug
------------------------------
Message: 4
Date: Mon, 7 Jan 2019 14:34:46 +0000
From: NA1SA Loon <na1saloon@???????.???>
To: AMSAT-BB <amsat-bb@?????.???>
Subject: [amsat-bb] Antenna and Doppler Question
Message-ID:
<DM6PR05MB3996FBE9931B0F916C408D75F2890@?????????????.????????.????.???????.??
?>
Content-Type: text/plain; charset="iso-8859-1"
Greetings,
I recently purchased an FT-857D with hopes of working some linear birds. I
know it's not the prime radio for the task, but I'm on a budget and would
like to remain happily married, although she understands and supports my
love for this hobby. The antennas are a rotatable array, each fixed 20
degree elevation, consisting of a Diamond A144S5 for 145mhz and a Diamond
A144S10 for 435mhz. The antennas are currently mounted 2 meter horizontal,
70cm vertical. I have had success using this configuration, knowing full
well I will not have the coverage I would as if I had circularly polarized
antennas for each band (again, budget and marital status come to mind). My
thought behind this was if I'm using my Arrow, the 2 meter and 70cm elements
are 90 deg to each other and it works, for both FM and SSB birds (seen it on
YouTube). Question is, would it be beneficial to put them (a) both
horizontal, (b) both vertical, or leave it like I currently have them?
Again, I know there is no correct
answer due to a tumbling satellite and changing polarity, I just haven't
had time to experiment with different configurations, and thought maybe
someone has and found that one configuration may have been more consistent
than the other.
Now for the linear bird question... I have an Icom IC-746PRO that I use to
listen to, or for, the downlink frequency. I was told to set the uplink
frequency and DO NOT touch it, just tune the downlink frequency. Running
CAT control (OmniRig with PstRotator), it is constantly updating both uplink
and downlink frequencies for doppler. I thought that was the whole purpose
of running CAT control with a doppler updating program, to keep you on
frequency, or close anyways. This area of the satellite world is all new to
me. I never had the chance to observe some work a linear bird to get an
idea on how to do it properly. I certainly do not expect to carry a QSO
throughout pass, I'm just seeking to explore another avenue of this hobby
and to have fun making a contact or two on a good pass. Like I said this
all new to me and I'm just seeking good advice and some positive guidance to
be successful.
Thanks,
NA1SA
------------------------------
Message: 5
Date: Mon, 7 Jan 2019 11:32:07 -0800 (PST)
From: "jim@?????.???? <jim@?????.???>
To: "AMSAT-BB" <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Antenna and Doppler Question
Message-ID: <1546889527.971722468@????.?????????.???>
Content-Type: text/plain;charset=UTF-8
For your first part, if they are fixed polarity, I would recommend crossed
polarization as it helps prevent killing your downlink with your own uplink.
This is particularly true for Mode V/U operation where that third harmonic
can be particularly troublesome.
For your second question, that one can be debated forever. The official
"One True Rule" is to adjust both uplink and downlink to maintain the same
frequency at the satellite. That is fine IF everyone in the conversation is
using computer frequency control. If you are manually correcting for
doppler, it's almost impossible. Therefore, the alternative rule is to tune
the higher frequency. In reality, it will somewhat depend on what the other
person is doling or is capable of. Personally I never used computerized
frequency control - mainly as a limitation of my Yaesu FT-736 which only has
one way CAT control. I found it to be an absolute pain in the backsides to
attempt to dial around looking for conversations from the computer
Jim Walls
K6CCC
-----Original Message-----
From: "NA1SA Loon" <na1saloon@???????.???>
Sent: Monday, January 7, 2019 06:34
To: "AMSAT-BB" <amsat-bb@?????.???>
Subject: [amsat-bb] Antenna and Doppler Question
Greetings,
I recently purchased an FT-857D with hopes of working some linear birds. I
know it's not the prime radio for the task, but I'm on a budget and would
like to remain happily married, although she understands and supports my
love for this hobby. The antennas are a rotatable array, each fixed 20
degree elevation, consisting of a Diamond A144S5 for 145mhz and a Diamond
A144S10 for 435mhz. The antennas are currently mounted 2 meter horizontal,
70cm vertical. I have had success using this configuration, knowing full
well I will not have the coverage I would as if I had circularly polarized
antennas for each band (again, budget and marital status come to mind). My
thought behind this was if I'm using my Arrow, the 2 meter and 70cm elements
are 90 deg to each other and it works, for both FM and SSB birds (seen it on
YouTube). Question is, would it be beneficial to put them (a) both
horizontal, (b) both vertical, or leave it like I currently have them?
Again, I know there is no correct
answer due to a tumbling satellite and changing polarity, I just haven't
had time to experiment with different configurations, and thought maybe
someone has and found that one configuration may have been more consistent
than the other.
Now for the linear bird question... I have an Icom IC-746PRO that I use to
listen to, or for, the downlink frequency. I was told to set the uplink
frequency and DO NOT touch it, just tune the downlink frequency. Running
CAT control (OmniRig with PstRotator), it is constantly updating both uplink
and downlink frequencies for doppler. I thought that was the whole purpose
of running CAT control with a doppler updating program, to keep you on
frequency, or close anyways. This area of the satellite world is all new to
me. I never had the chance to observe some work a linear bird to get an
idea on how to do it properly. I certainly do not expect to carry a QSO
throughout pass, I'm just seeking to explore another avenue of this hobby
and to have fun making a contact or two on a good pass. Like I said this
all new to me and I'm just seeking good advice and some positive guidance to
be successful.
Thanks,
NA1SA
_______________________________________________
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: Mon, 7 Jan 2019 19:52:38 +0000
From: Mark Coulthurst <mark@??????????.??.??>
To: AMSAT-BB@?????.???
Subject: [amsat-bb] FT-837 port config question
Message-ID:
<CANXzQC2AN3wDoYUR=FfVMMP82sko0-9BOUPJOwEnD=j3m96_kQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Hi
Im new to the BB list so i hope this has been done correctly....
I have a Yaesu FT847. I have satpc32 that will connect happily to the radio
and control everything as required but this only works if i set the radio
CAT menu to 9600.
Everything esle i run works at the 57600 CAT Rate and i have to change the
radio every time to 9600 CAT rate to use satpc32.
My question is this:
i presume there is a file that has the radio CAT configurations within the
sodtware. I would like to know if this is accessable and if i can overide
the 9600 current setting within satpc32 to change it to 57600?
Thanks in advance
M1AEC
------------------------------
Message: 7
Date: Mon, 7 Jan 2019 11:54:49 -0800
From: Greg D <ko6th.greg@?????.???>
To: "jim@?????.???? <jim@?????.???>
Cc: AMSAT-BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Antenna and Doppler Question
Message-ID: <b15f41af-5f58-62ee-93aa-b711ddbf14e5@?????.???>
Content-Type: text/plain; charset=UTF-8
jim@?????.??? wrote:
> Personally I never used computerized frequency control - mainly as a
limitation of my Yaesu FT-736 which only has one way CAT control. I found
it to be an absolute pain in the backsides to attempt to dial around looking
for conversations from the computer
Yeah, I agree. CAT is wonderful for the FM birds, but of marginal use
for SSB/CW if you can't grab the knob.
What I often do is use the computer to help me find myself in the
passband, then turn off CAT and go manual. The computer gets me close,
then it's usually a slight twist of the Tx or Rx (whichever is the
higher band) to fine tune. Flip to REVerse tracking (or NORmal if
non-inverting transponder) and go hunting for a QSO to join.
Greg KO6TH
------------------------------
Message: 8
Date: Mon, 7 Jan 2019 14:10:35 -0600
From: "Alan" <wa4sca@?????.???>
To: "'Mark Coulthurst'" <mark@??????????.??.??>, <AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] FT-837 port config question
Message-ID: <000001d4a6c5$0d755b30$28601190$@?????.???>
Content-Type: text/plain; charset="us-ascii"
Mark,
Look under Radio Setup: The top dropdown box normally says Model. However,
you can select Baud Rate. The FT-847 will work fine at 57600 baud with
SatPC32.
73,
Alan
WA4SCA
<-----Original Message-----
<From: AMSAT-BB [mailto:amsat-bb-bounces@?????.???? On Behalf Of Mark
<Coulthurst
<Sent: Monday, January 07, 2019 13:53 PM
<To: AMSAT-BB@?????.???
<Subject: [amsat-bb] FT-837 port config question
<
<Hi
<Im new to the BB list so i hope this has been done correctly....
<
<I have a Yaesu FT847. I have satpc32 that will connect happily to the radio
<and control everything as required but this only works if i set the radio
<CAT menu to 9600.
<
<Everything esle i run works at the 57600 CAT Rate and i have to change the
<radio every time to 9600 CAT rate to use satpc32.
<
<My question is this:
<i presume there is a file that has the radio CAT configurations within the
<sodtware. I would like to know if this is accessable and if i can overide
<the 9600 current setting within satpc32 to change it to 57600?
<
<Thanks in advance
<
<M1AEC
<_______________________________________________
<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: Mon, 7 Jan 2019 20:14:26 +0000 (UTC)
From: Mark Coulthurst <mark@??????????.??.??>
To: <APBIDDLE@???????.???>, 'Mark Coulthurst' <mark@??????????.??.??>,
<AMSAT-BB@?????.???>
Subject: Re: [amsat-bb] FT-837 port config question
Message-ID: <113529299.22841332.1546892066993@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Thanks that works ??
Regards
Mark Coulthurst
m. 07827 968 562e. mark@??????????.??.??
On Monday, January 7, 2019, 20:10, Alan <wa4sca@?????.???> wrote:
Mark,
Look under Radio Setup:? The top dropdown box normally says Model.? However,
you can select Baud Rate.? The FT-847 will work fine at 57600 baud with
SatPC32.
73,
Alan
WA4SCA
<-----Original Message-----
<From: AMSAT-BB [mailto:amsat-bb-bounces@?????.???? On Behalf Of Mark
<Coulthurst
<Sent: Monday, January 07, 2019 13:53 PM
<To: AMSAT-BB@?????.???
<Subject: [amsat-bb] FT-837 port config question
<
<Hi
<Im new to the BB list so i hope this has been done correctly....
<
<I have a Yaesu FT847. I have satpc32 that will connect happily to the radio
<and control everything as required but this only works if i set the radio
<CAT menu to 9600.
<
<Everything esle i run works at the 57600 CAT Rate and i have to change the
<radio every time to 9600 CAT rate to use satpc32.
<
<My question is this:
<i presume there is a file that has the radio CAT configurations within the
<sodtware. I would like to know if this is accessable and if i can overide
<the 9600 current setting within satpc32 to change it to 57600?
<
<Thanks in advance
<
<M1AEC
<_______________________________________________
<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: Mon, 7 Jan 2019 15:43:19 -0500
From: Pavel Milanes Costa <pavelmc@?????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] Experiences on Yaesu FT-712 for 70cm & Satellite?
Message-ID: <f67e2336-082a-b035-cc6b-f121f4bde411@?????.???>
Content-Type: text/plain; charset=utf-8; format=flowed
I know, this is a pretty old rig.
But in Cuba we can't just buy a radio from a shelf, and one of these
(FT-712L) appeared on the local swap market, having problems with my
Baofengs for Satellite I was wondering if any of you have some
experience with one of this units?
Pros, cons?
73 Pavel CO7WT.
------------------------------
Message: 11
Date: Mon, 7 Jan 2019 21:17:04 +0000 (UTC)
From: Gustavo Carpignano <lw2dtz@?????.???.??>
To: AMSAT BB <amsat-bb@?????.???>
Subject: [amsat-bb] HS_Soundmodem & MinXSS 2
Message-ID: <1637597157.14507427.1546895824280@????.?????.???>
Content-Type: text/plain; charset=UTF-8
I'm using the HS_soundmodem from UZ7HO, to receive? at 9600 baud? theMinXSS
2 packets. I also use the frame decoder of the MinXSS provided bythe
satellite's team.?For that I use the AGW port 8000 and the host local
address 127.0.0.1
For some reason the packets do not arrive from the HS_modem to the decoder.?
Any help is welcome.
73 Gustavo, LW2DTZ
------------------------------
Message: 12
Date: Mon, 7 Jan 2019 20:13:34 -0500
From: James McIrvin <arsn1ipa@?????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] UPDATE
Message-ID:
<CAHKjG8M0WhiVbRNw919s3j+FLSTwi25NAcnnDGOStr6xdnQOxw@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Good evening all.
I would like to thank all of those that have helped with information that
they have sent to me and also Erich Eichmann for him pointing me in the
right direction to finding my error in trying to get the software working
with the radio.
He forced me to look at things deeper than I had and once I did what he
said things came together nicely.
Now that I have been able to make a small handful of contacts on the XW-2
sats, I can start to work on some of the other things to make it much more
enjoyable and be able to see about doing a couple other sats where there is
digital stuff going on.
Have to take some of this in small steps to get it working and that is what
is going on.
I also have to figure out the settings to tweak the doppler file for the
radio so that I may not have to fiddle with too many adjustments. I know
that there will be some, but that is the way things work.
I also have to work on making up some cheat sheets for myself, now that I
am able to get on some I look forward in working some of you folks when the
sats permit me to have those qso's.
However, the next venture I need to deal with here is getting mast mounted
preamps setup so that I will have a better chance of hearing things and
working more stuff when it is there. The ones that I have made have been
with just the eggbeater antenna's that I have set up on a temp tripod and
the radio preamp. I know once I get it out at the base of the antenna it
will enhance things due to feedline loss that I have now. Once I figure
out what I want to do with some of this stuff as to placement of the
antennas to a more permanent location in the yard I can tweak feedline and
alike. However, here in the northeast with the ice and snow at this time
can't do much in trying to dig up the ground and lay a conduit to the site
for working with this stuff. It all comes in time.
THANK YOU AGAIN TO ALL THOSE THAT HAVE HELPED ME.
Have a great evening.
73 de Jim N1IPA
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------------------------------
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!
http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
End of AMSAT-BB Digest, Vol 14, Issue 9
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