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CX2SA > SATDIG 24.04.11 01:45l 815 Lines 27135 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Re: FO 29 help (K5OE)
2. Re: FO 29 help (Bill Dzurilla)
3. Re: FO 29 help (Kevin Deane)
4. Re: FO 29 help (Ted)
5. Re: FO 29 help (Dave Guimont)
6. Re: FO 29 help (Dave Guimont)
7. Re: Icom D-Star (Tony Langdon)
8. Re: FO 29 help (Jim Jerzycke)
9. Re: Icom D-Star (Tony Langdon)
10. Re: FO 29 help (Tony Langdon)
11. SSB/FM (Kevin Deane)
12. Re: FO 29 help (Gordon JC Pearce)
13. Re: FO 29 help (John Becker)
14. FO 29 help (Ted)
15. Thank You (Mike1234)
----------------------------------------------------------------------
Message: 1
Date: Sat, 23 Apr 2011 15:08:12 -0400 (EDT)
From: K5OE <k5oe@xxx.xxx>
Subject: [amsat-bb] Re: FO 29 help
To: amsat-bb@xxxxx.xxx
Message-ID: <8CDD000ECE7AF95-BEC-59E4@xxxxxxxxxxxx.xxxxxx.xxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Ted,
It sounds like you are hearing a "reflection" of your signal, not the
downlink from FO-29. This is a common malady associated with 3rd harmonic
interference on mode J (V/U) satellites. Try this on a pass that will reach
at least 30 degrees above the horizon:
1. Turn HRD control of your TS2K off
2. Set your uplink at 145.950 CW
3. At AOS you should hear the beacon about 8-10 kHz above the beacon freq
of 435.895 (about 435.904 MHz)
4. Tune your receiver to 435.850 plus that same delta from beacon (about
435.859 USB). You should be able to tune your receive and hear your CW dits
(clearly).
5. Zero beat the CW dits on the low side, switch to LSB and you should be
exactly on frequency and can turn on TRACE and go anywhere in the passband.
If you have auto-Doppler turned on in HRD, your program should do the same
thing as this manual procedure.
You should be able to hear yourself. If not, Google the diplexer fix for
the harmonic problem.
>From the center of the passbands, whatever the UHF Doppler shift is, the
VHF Doppler will be approximately 1/3 in the opposite direction. This is a
helpful rule for finding your downlink manually.
73,
Jerry, K5OE
-- original message --
Good morning,
Since putting up the Elk on a rotor (fixed el +- 25 deg), I decided to try
some linear birds.
I have tried FO 29 about 3x but seem to have some issues. I am using TS-2000
in SAT mode with HRD Sat program.
Up: 145.9 LSB
Dn: 435.8 USB
I am clearly able to track the bird with doppler as I can hear the CW beacon
through the entire pass (switching back and forth). I can also TX into the
bird and hear my signal coming back duplex. However, what is coming back is
my voice signal but totally unintelligible. Also, I have heard no other
stations on these passes.
Am I doing something wrong?
Tnx for any help
Ted, K7TRK
------------------------------
Message: 2
Date: Sat, 23 Apr 2011 13:29:31 -0700 (PDT)
From: Bill Dzurilla <billdz.geo@xxxxx.xxx>
Subject: [amsat-bb] Re: FO 29 help
To: amsat-bb@xxxxx.xxx
Message-ID: <576838.69962.qm@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
It sounds like you when you are hearing your distorted voice it is some
cross-mod from your own radio rather than a downlink signal from the bird.
I assume you are using a diplexer to split the coax from the Elk to 2m and
70cm, and then running coax to each output on the TS-2000? The diplexer may
not be providing adequate isolation.
The center of the FO-29 passband is 435.85, not 435.8, so as the bird is
approaching you most of the SSB signals will be at .85 and higher, you need
to tune around. Signals from this bird are usually quite loud, so there
must be a problem if you are not hearing anybody. This bird is
under-utilized but there are usually at least a couple of people on.
I am also using an Elk with fixed elevation (12 degrees) and it works great
with my FT-847, can work FO-29 almost to the horizon.
73, Bill NZ5N
> Date: Sat, 23 Apr 2011 11:08:29 -0700
> From: "Ted" <k7trkradio@xxxxxxx.xxx>
> Subject: [amsat-bb]? FO 29 help
> To: "'amsat-bb'" <amsat-bb@xxxxx.xxx>
> Message-ID:
> <4EDCCDC24E15410BA806C31CEDA08866@xxxxxxxxxxx>
> Content-Type: text/plain;???
> charset="us-ascii"
>
> Good morning,
>
> Since putting up the Elk on a rotor (fixed el +- 25 deg), I
> decided to try
> some linear birds.
>
> I have tried FO 29 about 3x but seem to have some issues. I
> am using TS-2000
> in SAT mode with HRD Sat program.
> Up: 145.9? LSB
> Dn: 435.8? USB
>
> I am clearly able to track the bird with doppler as I can
> hear the CW beacon
> through the entire pass (switching back and forth). I can
> also TX into the
> bird and hear my signal coming back duplex. However, what
> is coming back is
> my voice signal but totally unintelligible. Also, I have
> heard no other
> stations on these passes.
>
> Am I doing something wrong?
>
> Tnx for any help
>
------------------------------
Message: 3
Date: Sat, 23 Apr 2011 13:37:07 -0700
From: Kevin Deane <summit496@xxxx.xxx>
Subject: [amsat-bb] Re: FO 29 help
To: <amsat-bb@xxxxx.xxx>
Message-ID: <COL107-W2307B6CB2DD7F0567D9B7183940@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Or he could just use FM since hardly anyone uses the SSB birds compared to
the other sats.
Although I am sure there are a million reasons not to use FM. even though it
works just fine on the SSB birds. The feedback I got from the FO-29 Control
Team was that SSB was pretty much "the rule" or "band plan" if you will.
I may be wrong in my opinion, but I dont see why we cant use FM other than
to keep usage down? I hope everyone dosent freak out, as this seems to be
"Taboo"
Kevin
KF7MYK
> To: amsat-bb@xxxxx.xxx
> From: k5oe@xxx.xxx
> Date: Sat, 23 Apr 2011 15:08:12 -0400
> Subject: [amsat-bb] Re: FO 29 help
>
>
> Ted,
> It sounds like you are hearing a "reflection" of your signal, not the
downlink from FO-29. This is a common malady associated with 3rd harmonic
interference on mode J (V/U) satellites. Try this on a pass that will reach
at least 30 degrees above the horizon:
> 1. Turn HRD control of your TS2K off
> 2. Set your uplink at 145.950 CW
> 3. At AOS you should hear the beacon about 8-10 kHz above the beacon freq
of 435.895 (about 435.904 MHz)
> 4. Tune your receiver to 435.850 plus that same delta from beacon (about
435.859 USB). You should be able to tune your receive and hear your CW dits
(clearly).
> 5. Zero beat the CW dits on the low side, switch to LSB and you should be
exactly on frequency and can turn on TRACE and go anywhere in the passband.
>
> If you have auto-Doppler turned on in HRD, your program should do the same
thing as this manual procedure.
>
> You should be able to hear yourself. If not, Google the diplexer fix for
the harmonic problem.
>
> >From the center of the passbands, whatever the UHF Doppler shift is, the
VHF Doppler will be approximately 1/3 in the opposite direction. This is a
helpful rule for finding your downlink manually.
>
> 73,
> Jerry, K5OE
>
> -- original message --
> Good morning,
>
> Since putting up the Elk on a rotor (fixed el +- 25 deg), I decided to try
> some linear birds.
>
> I have tried FO 29 about 3x but seem to have some issues. I am using TS-2000
> in SAT mode with HRD Sat program.
> Up: 145.9 LSB
> Dn: 435.8 USB
>
> I am clearly able to track the bird with doppler as I can hear the CW beacon
> through the entire pass (switching back and forth). I can also TX into the
> bird and hear my signal coming back duplex. However, what is coming back is
> my voice signal but totally unintelligible. Also, I have heard no other
> stations on these passes.
>
> Am I doing something wrong?
>
> Tnx for any help
>
> Ted, K7TRK
>
>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 4
Date: Sat, 23 Apr 2011 13:44:04 -0700
From: "Ted" <k7trkradio@xxxxxxx.xxx>
Subject: [amsat-bb] Re: FO 29 help
To: "'Bill Dzurilla'" <billdz.geo@xxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID: <D541743A76D4471A85991FF4AF9220D9@xxxxxxxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
Thanks Bill. Yes, a single feed line goes to a Diamond duplexer then 2 lines
to the radio (meter and preamp in line)
I will adjust the freqs next time
73, Ted
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Bill Dzurilla
Sent: Saturday, April 23, 2011 1:30 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: FO 29 help
It sounds like you when you are hearing your distorted voice it is some
cross-mod from your own radio rather than a downlink signal from the bird.
I assume you are using a diplexer to split the coax from the Elk to 2m and
70cm, and then running coax to each output on the TS-2000? The diplexer may
not be providing adequate isolation.
The center of the FO-29 passband is 435.85, not 435.8, so as the bird is
approaching you most of the SSB signals will be at .85 and higher, you need
to tune around. Signals from this bird are usually quite loud, so there
must be a problem if you are not hearing anybody. This bird is
under-utilized but there are usually at least a couple of people on.
I am also using an Elk with fixed elevation (12 degrees) and it works great
with my FT-847, can work FO-29 almost to the horizon.
73, Bill NZ5N
> Date: Sat, 23 Apr 2011 11:08:29 -0700
> From: "Ted" <k7trkradio@xxxxxxx.xxx>
> Subject: [amsat-bb]? FO 29 help
> To: "'amsat-bb'" <amsat-bb@xxxxx.xxx>
> Message-ID:
> <4EDCCDC24E15410BA806C31CEDA08866@xxxxxxxxxxx>
> Content-Type: text/plain;???
> charset="us-ascii"
>
> Good morning,
>
> Since putting up the Elk on a rotor (fixed el +- 25 deg), I
> decided to try
> some linear birds.
>
> I have tried FO 29 about 3x but seem to have some issues. I
> am using TS-2000
> in SAT mode with HRD Sat program.
> Up: 145.9? LSB
> Dn: 435.8? USB
>
> I am clearly able to track the bird with doppler as I can
> hear the CW beacon
> through the entire pass (switching back and forth). I can
> also TX into the
> bird and hear my signal coming back duplex. However, what
> is coming back is
> my voice signal but totally unintelligible. Also, I have
> heard no other
> stations on these passes.
>
> Am I doing something wrong?
>
> Tnx for any help
>
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 5
Date: Sat, 23 Apr 2011 13:47:57 -0700
From: Dave Guimont <dguimon1@xxx.xx.xxx>
Subject: [amsat-bb] Re: FO 29 help
To: "Ted" <k7trkradio@xxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <27.D4.20874.AFA33BD4@xxxxxxxxxxxxx.xxxx.xx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
>
>
>
>I am clearly able to track the bird with doppler as I can hear the CW beacon
>through the entire pass (switching back and forth). I can also TX into the
>bird and hear my signal coming.let us know when u find it!!
>Totally clear and full quiet no distortion
>
>
>----------
>From: Dave Guimont [mailto:dguimon1@xxx.xx.xxxx
>Sent: Saturday, April 23, 2011 1:48 PM
>To: Ted
>Cc: amsat-bb@xxxxx.xxx
>Subject: Re: [amsat-bb] FO 29 help
>
>
>
>
>I am clearly able to track the bird with doppler as I can hear the CW beacon
>through the entire pass (switching back and forth). I can also TX into the
>bird and hear my signal coming back duplex. However, what is coming back is
>my voice signal but totally unintelligible. Also, I have heard no other
>stations on these passes.
>
>
>Ted, what does it sound like on cw??
>
>
73, Dave, WB6LLO
dguimon1@xxx.xx.xxx
Disagree: I learn....
Pulling for P3E...
------------------------------
Message: 7
Date: Sun, 24 Apr 2011 07:33:12 +1000
From: Tony Langdon <vk3jed@xxxxx.xxx>
Subject: [amsat-bb] Re: Icom D-Star
To: Gregg Wonderly <greggwon@xxxxx.xxx>, Gordon JC Pearce
<gordonjcp@xxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <4db3459f.28758e0a.177f.338f@xx.xxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
At 01:42 AM 4/24/2011, Gregg Wonderly wrote:
>In the end, digital compression of spectrum space is going to happen more and
>more. AM style broadcast is hugely inefficient even though it is painfully
>simple to do. I don't really believe that D-Star is the right choice for
>"everything" because it is single source. But, so is Microsoft windows,
There's no "one size fits all. D-STAR has its place, and being the
new kid on the block, it's open to a lot of tinkering.
>MacOS-X, and many other software based systems. If you are an FPGA
>programmer,
>perhaps you can build an FPGA based CODEC for amateur radio that
>would do voice
>compression etc. But in the end, you also have to have an
>transmitter with the
>appropriate bandwidth output to reduce the spectrum used.
Well, maybe one day someone will package something like Codec2 into a
chip. That will be a good day for ham radio, BUT it'll never make
D-STAR. Why? Because it's not in the spec and will break the
existing installed hardware base. However, the future is likely to
consist of "multimode" radios, which can handle multiple codecs and
protocols, and which will be capable of having a yet unknown cocecs
installed in the field. Also, eventually the DVSI patent will run
out, just like the patent for SSB did many years ago.
>The simple fact is that HAM radio emission standards (simple voice modulated
>with some simple emission standard) are now more than a century old. As
Not quite. CW certainly is, AM is around the century mark, I think
SSB is a little over 80 years old from its first conception, and FM
is 75 years old. :)
>capable as they are, the abilities they present seortant functions to
me. If something happened that required falling back to older analog
modes, there's a pool of experienced operators on hand, who know he
quirks that the commercial world will forget.
>But, we all have to understand that it costs money to do anything "new and
>different". People experimenting with stuff is great, but it
>minimizes who can
>participate if you have to "build it" or "pay a lot". That's just life in
>general. You can't participate in everything unless you have the
>resources to
>do that.
And there's experimentation. I don't have the background and
resources to play at a low hardware or software level, but at a
higher level, equivalent to "mashups" on the Internet I have played
and still do.
>In the US, any digital communications that is coded in some way only needs to
>have a publicly visible document detailing how it works for the FCC
>regulations
>to be met. Other places in the world may have different requirements and
>that's nothing new is it?
Requirements here are much the same as the US, somewhat more liberal
when it comes to modulation and coding. Basically there are two
things that matter. (1) Not to exceed the maximum necessary
bandwidth (D-STAR fits on all bands except 2200m), and (2) The coding
must not be for the purpose of "obscuring the meaning of the
message". D-STAR certainly fits, because radios are readily
available, and they don't need encryption keys.
73 de VK3JED / VK3IRL
http://vkradio.com
------------------------------
Message: 8
Date: Sat, 23 Apr 2011 21:34:21 +0000
From: Jim Jerzycke <kq6ea@xxxxxxx.xxx>
Subject: [amsat-bb] Re: FO 29 help
To: Kevin Deane <summit496@xxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <4DB345DD.2050508@xxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
There are some very good reasons to NEVER use FM on a linear
transponder, especially FO-29 and AO-7.
Since FM is running a constant carrier, it sucks all the available power
away from other users on the transponder, and makes the transponder run
a full-carrier on the output.
This is VERY hard on the power system of a satellite that was never
designed for it, and particularly hard on the batteries of an older bird
like FO-29.
Since AO-7 is running entirely on its solar cells, forcing it to
transmit a full carrier would drag the system voltage down to where it
would probably reset the satellite, and possibly cause other damage.
If you want to run FM, stay on the FM satellites and keep off the linear
birds!
Jim KQ6EA
On 04/23/2011 08:37 PM, Kevin Deane wrote:
>
> Or he could just use FM since hardly anyone uses the SSB birds compared
to the other sats.
>
> Although I am sure there are a million reasons not to use FM. even though
it works just fine on the SSB birds. The feedback I got from the FO-29
tried FO 29 about 3x but seem to have some issues. I am using
TS-2000
>> in SAT mode with HRD Sat program.
>> Up: 145.9 LSB
>> Dn: 435.8 USB
>>
>> I am clearly able to track the bird with doppler as I can hear the CW
beacon
>> through the entire pass (switching back and forth). I can also TX into the
>> bird and hear my signal coming back duplex. However, what is coming back is
>> my voice signal but totally unintelligible. Also, I have heard no other
>> stations on these passes.
>>
>> Am I doing something wrong?
>>
>> Tnx for any help
>>
>> Ted, K7TRK
>>
>>
>>
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 9
Date: Sun, 24 Apr 2011 07:42:08 +1000
From: Tony Langdon <vk3jed@xxxxx.xxx>
Subject: [amsat-bb] Re: Icom D-Star
To: Gordon JC Pearce <gordonjcp@xxxx.xxx>, amsat-bb@xxxxx.xxx
Message-ID: <4db347b7.4132440a.0d53.1882@xx.xxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
At 04:42 AM 4/24/2011, Gordon JC Pearce wrote:
>On Sat, 2011-04-23 at 10:42 -0500, Gregg Wonderly wrote:
> > In the end, digital compression of spectrum space is going to
> happen more and
> > more. AM style broadcast is hugely inefficient even though it is
> painfully
>
>Okay, but *why*? Why are we so obsessed with squeezing bandwidth down
>and down, at the expense of intelligibility?
I find D-STAR more intelligible than a significant proportion of FM
transmissions. And why are we obsessed with reducing bandwidth? 2 reasons:
1. It's economics, bandwidth is expensive in the commercial world,
and in the ham world, some countries are suffering congestion.
2. Reducing the amount of information to be transmitted means more
range (Shannon's Law). And don't we all want a bit more range in the
ham world?
>I've got my spectrum analyser hooked up to my 2m aerial at the moment.
>For the past half hour it has indicated the odd little spike at
>144.800MHz indicating a little bit of (weak) APRS traffic, a big spike
>at the output of GB3CS (because it's line-of-sight), a couple of
>slightly smaller spikes from the other two local repeaters (PA and KE)
>and a bump where FE, FF and AY are supposed to be (they're quite weak
>here).
Well, everyone's in a different situation. I have had days in
Melbourne where it's hard to find a free 2m simplex frequency. I'm
certain in the US there's places where 2m is congested. Sure, where
I am now, 2m is fairly quite, but I'm outside the big cities, and
separated from Melbourne by a mountain range. With only a few dozen
hams in the area, bandwidth usage isn't a high priority issue, but
that's not going to stop me playing with narrowband voice modes.
>This is where D-Star falls down - it's *still* just a 12.5kHz-wide
>channel. Without getting into linear PAs and the like, it's going to be
>quite hard to do anything else and have a useful data rate.
We do have linear PAs available on VHF and UHF... We could always do
FDMDV on 70cm to really save bandwidth. ;)
73 de VK3JED / VK3IRL
http://vkradio.com
------------------------------
Message: 10
Date: Sun, 24 Apr 2011 07:44:47 +1000
From: Tony Langdon <vk3jed@xxxxx.xxx>
Subject: [amsat-bb] Re: FO 29 help
To: Kevin Deane <summit496@xxxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID: <4db34855.6237440a.3e63.ffffb5e0@xx.xxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
At 06:37 AM 4/24/2011, Kevin Deane wrote:
> Or he could just use FM since hardly anyone uses the SSB birds
> compared to the other sats.
>
>Although I am sure there are a million reasons not to use FM. even
>though it works just fine on the SSB birds. The feedback I got from
>the FO-29 Control Team was that SSB was pretty much "the rule" or
>"band plan" if youes sense, thanks for taking the time to explain...
Kevin
------------------------------
Message: 12
Date: Sat, 23 Apr 2011 23:21:58 +0100
From: Gordon JC Pearce <gordonjcp@xxxx.xxx>
Subject: [amsat-bb] Re: FO 29 help
To: amsat-bb@xxxxx.xxx
Message-ID: <1303597318.4273.2.camel@xxxxxxxxx.xxxxxxxxxxx>
Content-Type: text/plain; charset="UTF-8"
On Sat, 2011-04-23 at 13:37 -0700, Kevin Deane wrote:
> I may be wrong in my opinion, but I dont see why we cant use FM other
> than to keep usage down? I hope everyone dosent freak out, as this
> seems to be "Taboo"
It would be technically okay if the linear sats were still healthy with
nice new batteries and shiny clean solar panels. They're not, though,
and the continuous FM carrier could well pull the power bus down beyond
the point where the satellite becomes uncontrollable.
They're all a bit fragile now; even AO-51 is getting a bit reluctant now
that it's passing into long periods of eclipse. For us Earth-dwellers
it's cheap and easy to replace batteries every two years, but for those
little satellites it's much harder. You'd have to catch them, for a
start...
Gordon MM0YEQ
------------------------------
Message: 13
Date: Sat, 23 Apr 2011 17:41:55 -0500
From: John Becker <w0jab@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: FO 29 help
To: amsat-bb@xxxxx.xxx
Message-ID: <5.2.0.9.2.20110423173509.03e9cca0@xxxx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
2 real good points.
I for one DON'T see what the big deal is about the FM birds
other then being very easy.
Every time I listen it's like a free for all.
Sure do miss AO-40
John, W0JAB
AMSAT life member
At 04:44 PM 4/23/2011, you wrote:
>At 06:37 AM 4/24/2011, Kevin Deane wrote:
>
>
>> Or he could just use FM since hardly anyone uses the SSB birds
>> compared to the other sats.
>>
>>Although I am sure there are a million reasons not to use FM. even
>>though it works just fine on the SSB birds. The feedback I got from
>>the FO-29 Control Team was that SSB was pretty much "the rule" or
>>"band plan" if you will.
>
>FM works, but it is STRONGLY discouraged for 2 reasons:
>
>1. It uses more of the transponder's bandwidth (meaning less users
>on the bird)
>
>2. It uses more transponder power, which is a serious consideration,
>given that many of our birds are getting old and the batteries are
>getting weak.
>
>73 de VK3JED / VK3IRL
>http://vkradio.com
------------------------------
Message: 14
Date: Sat, 23 Apr 2011 16:04:48 -0700
From: "Ted" <k7trkradio@xxxxxxx.xxx>
Subject: [amsat-bb] FO 29 help
To: "'Bill Dzurilla'" <billdz.geo@xxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID: <7EC7A2117AD54469BF364929AD09F9D0@xxxxxxxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
Thanks to all that offered advice...
I just copied the last -bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Bill Dzurilla
Sent: Saturday, April 23, 2011 1:30 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: FO 29 help
It sounds like you when you are hearing your distorted voice it is some
cross-mod from your own radio rather than a downlink signal from the bird.
I assume you are using a diplexer to split the coax from the Elk to 2m and
70cm, and then running coax to each output on the TS-2000? The diplexer may
not be providing adequate isolation.
The center of the FO-29 passband is 435.85, not 435.8, so as the bird is
approaching you most of the SSB signals will be at .85 and higher, you need
to tune around. Signals from this bird are usually quite loud, so there
must be a problem if you are not hearing anybody. This bird is
under-utilized but there are usually at least a couple of people on.
I am also using an Elk with fixed elevation (12 degrees) and it works great
with my FT-847, can work FO-29 almost to the horizon.
73, Bill NZ5N
> Date: Sat, 23 Apr 2011 11:08:29 -0700
> From: "Ted" <k7trkradio@xxxxxxx.xxx>
> Subject: [amsat-bb]? FO 29 help
> To: "'amsat-bb'" <amsat-bb@xxxxx.xxx>
> Message-ID:
> <4EDCCDC24E15410BA806C31CEDA08866@xxxxxxxxxxx>
> Content-Type: text/plain;???
> charset="us-ascii"
>
> Good morning,
>
> Since putting up the Elk on a rotor (fixed el +- 25 deg), I
> decided to try
> some linear birds.
>
> I have tried FO 29 about 3x but seem to have some issues. I
> am using TS-2000
> in SAT mode with HRD Sat program.
> Up: 145.9? LSB
> Dn: 435.8? USB
>
> I am clearly able to track the bird with doppler as I can
> hear the CW beacon
> through the entire pass (switching back and forth). I can
> also TX into the
> bird and hear my signal coming back duplex. However, what
> is coming back is
> my voice signal but totally unintelligible. Also, I have
> heard no other
> stations on these passes.
>
> Am I doing something wrong?
>
> Tnx for any help
>
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------------------------------
Message: 15
Date: Sat, 23 Apr 2011 19:32:53 -0400
From: "Mike1234" <mikef1234@xxxxxxxxxxxxxxx.xxx>
Subject: [amsat-bb] Thank You
To: "AMSAT" <AMSAT-BB@xxxxx.xxx>
Message-ID: <5F4CFF643F5849E9B9388514CB05C3E2@xxxxxxxxxxxxx>
Content-Type: text/plain; charset="us-ascii"
I would thank everyone who commented on my question about the diplexer. The
discussion opened up some new thoughts where, had I not read about duplexers
I may have been kicking myself in the rear. Hopefully if weather holds I
will have everything going ! Thanks again to everyone and I hope to eyeball
some of you at Dayton !
Mike N8GBU
------------------------------
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End of AMSAT-BB Digest, Vol 6, Issue 237
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