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Today's Topics:
1. Re: Radios for satellite operations (Edward Cole)
2. OT-ish - anyone got FT-290 bits? (Gordon JC Pearce)
3. op error (Bob- W7LRD)
4. Arecibo (Nick Pugh K5QXJ)
5. Re: Radios for satellite operations (Gary "Joe" Mayfield)
6. Re: Arecibo (Rick - WA4NVM)
7. Re: Radios for satellite operations (Michael Tondee)
8. Re: Radios for satellite operations (James Duffey)
9. Re: Arecibo (i8cvs)
10. Re: Arecibo and circular polarization using cheap yagis (i8cvs)
11. Re: Arecibo (i8cvs)
12. Re: Radios for satellite operations
(Doug Faunt N6TQS +1-510-655-8604)
13. HO-68 Mode Schedule (John Zaruba Jr)
14. Arecibo--MUCH louder today! (Mark L. Hammond)
15. Re: Arecibo--MUCH louder today! (David Barber)
16. Re: Arecibo--MUCH louder today! (Edward Cole)
17. Re: [Moon-net] Arecibo--MUCH louder today! (David Barber)
----------------------------------------------------------------------
Message: 1
Date: Fri, 16 Apr 2010 22:44:55 -0800
From: Edward Cole <kl7uw@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: Radios for satellite operations
To: <amsat-bb@xxxxx.xxx>
Message-ID: <201004170644.o3H6ivfd024577@xxxxxxx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
Of course, each to his own choice.
I decided on the K3/10 (10w version of the K3), with subreceiver and
transverter interface (and a few other goodies) ...total $3000
Add a new DEMI 144/28 xvtr $500, and later a DEMI 432/28 xvtr kit
$400. These are the new design to be released in early June.
I added a ARR 50-Mhz preamp and building a 300w HF amp kit (cost $150).
When I have fully investigated running the K3 for full duplex under
sw control I will consider letting my FT-847 go. Keeping it for now
(also because I will not get the 432 xvtr right away).
Why not the Flex-500 + U/V? Well, cost is one, and the need to have
a computer was another. I will use my 6-lb. K3 for portable mw
operation (mainly CW) so its size, weight and ability to be fully
used without toting along a computer.
Undoubtedly the K3 and Flex-5000 are the top radios in the amateur
market as far as performance specs. I've had my K3 for about a month
and am still learning more about it. Its a keeper. (better be as I
will never spend this much on ham radio, again)
73, Ed - KL7UW
At 06:09 PM 4/16/2010, Gary \"Joe\" Mayfield wrote:
>Again if price is no object, you should be able to do it with a K3 from
>Elecraft (using the sub receive and their transverters).
>
>73,
>Joe kk0sd
>
>-----Original Message-----
>From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
>Behalf Of Michael Tondee
>Sent: Friday, April 16, 2010 8:26 PM
>To: amsat-bb@xxxxx.xxx
>Subject: [amsat-bb] Re: Radios for satellite operations
>
>The Kenwood TS-2000 and 2000X are still out there. They have an annoying
>birdie right smack dab on the downlink of SO-50 and AO-27 but both of
>those are FM sats. You can work around the birdie with a preamp but the
>pass time is shortened a bit because you are waiting for the receive
>frequency to get a little bit away from the birdie so you can hear. I
>don't know of any issues with SSB/CW sats though.
> Icom is coming out with a new radio that has HF plus sat capapbility
>but for the price I've heard you could just about buy a Flex 5000A and
>add the soon upcoming V/U module for not much more.
> The Flex 5000A is cutting edge technology but you have to get over
>most hams confounded affinity for knobs. I just got my 5000A today. I
>chose it over replacing the TS-2000X I used to have with another. It
>will be awhile before I can afford to add the V/U module but I'm willing
>to wait because IMHO the Flex is head and shoulders above any other
>radio on the market today.
>73,
>Michael, W4HIJ
>On 4/16/2010 12:18 PM, Jacob Tennant wrote:
> > Was wondering today after searching around on the internet, what radios
>are
> > people using for satellite operations as I noticed the ICOM IC-910H and
>the
> > Yaesu FT-847 are now discontinued?
> >
> >
> >
> > Was hoping to get into the SSB/CW satellites but was hoping to do it on a
> > new radio, but it seems the satellite radios are disappearing from the
> > market.
> >
> >
> >
> > I do have a Yaesu FT-857D that I am getting setup to do the FM satellites
> > with and will try the SSB/CW satellites if I can do it with that radio.
> >
> >
> >
> > Jacob Tennant - K8JWT
> >
> >
>
>_______________________________________________
>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
73, Ed - KL7UW, WD2XSH/45
======================================
BP40IQ 500 KHz - 10-GHz www.kl7uw.com
EME: 144-600w, 432-100w, 1296-60w, 3400-fall 2010
DUBUS Magazine USA Rep dubususa@xxxxxxx.xxx
======================================
------------------------------
Message: 2
Date: Sat, 17 Apr 2010 08:51:42 +0100
From: Gordon JC Pearce <gordonjcp@xxxx.xxx>
Subject: [amsat-bb] OT-ish - anyone got FT-290 bits?
To: AMSAT-BB@xxxxx.xxx
Message-ID: <1271490702.22622.32.camel@xxxxx.xxxx>
Content-Type: text/plain; charset="UTF-8"
Hi all,
In order to get onto the linear transponders I picked up a
slight-project Yaesu FT-290 at a rally last weekend. It's pretty much
working, but the display is faulty. It pretty much only ever displays a
backwards F, no matter what you do. Other than that it tunes,
memorises, clarifies and generally seems to behave itself, so I suspect
that the display IC is faulty and the CPU is actually okay.
So, does anyone have a dead FT-[267]90 for spares? Really, I just need
the display PCB (the LCD seems fine, so I'd take a chance on one with a
broken LCD) or even just the chip. If I could find spec on the chip I'd
even have a crack at building a replacement controller.
Feel free to reply offlist if you don't want to noise up the list with
radio fixing chatter.
Thanks,
Gordon MM0YEQ
------------------------------
Message: 3
Date: Sat, 17 Apr 2010 08:06:44 +0000 (UTC)
From: Bob- W7LRD <w7lrd@xxxxxxx.xxx>
Subject: [amsat-bb] op error
To: amsat-bb@xxxxx.xxx
Message-ID:
<2127631653.6955331271491604439.JavaMail.root@xxxxxxx.xxxxxxxxxx.xx.xxxx.xxxxx
xx.xxx>
Content-Type: text/plain; charset=utf-8
My 910 in cw will tx when key is closed whether in vox mode or not.? Set the
key for external keyer.? I'm sure it's simple, I? can't figure it out.
73 Bob W7LRD
------------------------------
Message: 4
Date: Sat, 17 Apr 2010 06:09:25 -0500
From: "Nick Pugh K5QXJ" <quadpugh@xxxxxxxxx.xxx>
Subject: [amsat-bb] Arecibo
To: <amsat-bb@xxxxx.xxx>
Message-ID: <000001cade1e$710700f0$531502d0$@xxx>
Content-Type: text/plain; charset="us-ascii"
Hi All
I have a KLM 436 with < 1 db preamp I did not here them yesterday. I have
about 2 db of sun noise. The question I have for those who copied Arecibo
yesterday how much sun noise do you have in a 2.4 KHz band with filter?
Thanks
nick
Office 337 593 8700
Cell 337 258 2527
Helping UL become a world Class Engineering and Educational School
------------------------------
Message: 5
Date: Sat, 17 Apr 2010 07:04:36 -0500
From: "Gary \"Joe\" Mayfield" <gary_mayfield@xxxxxxx.xxx>
Subject: [amsat-bb] Re: Radios for satellite operations
To: <amsat-bb@xxxxx.xxx>
Message-ID: <COL114-DS13E76899A1483A7C3454A88A0D0@xxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Ed,
You are building my dream station! I would love to go the K3 route.
I am curious why you went with the DEM transverters as opposed to the
Elecraft ones. I'm not being critical, just curious as to what you found.
73,
Joe kk0sd
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Edward Cole
Sent: Saturday, April 17, 2010 1:45 AM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Radios for satellite operations
Of course, each to his own choice.
I decided on the K3/10 (10w version of the K3), with subreceiver and
transverter interface (and a few other goodies) ...total $3000
Add a new DEMI 144/28 xvtr $500, and later a DEMI 432/28 xvtr kit
$400. These are the new design to be released in early June.
I added a ARR 50-Mhz preamp and building a 300w HF amp kit (cost $150).
When I have fully investigated running the K3 for full duplex under
sw control I will consider letting my FT-847 go. Keeping it for now
(also because I will not get the 432 xvtr right away).
Why not the Flex-500 + U/V? Well, cost is one, and the need to have
a computer was another. I will use my 6-lb. K3 for portable mw
operation (mainly CW) so its size, weight and ability to be fully
used without toting along a computer.
Undoubtedly the K3 and Flex-5000 are the top radios in the amateur
market as far as performance specs. I've had my K3 for about a month
and am still learning more about it. Its a keeper. (better be as I
will never spend this much on ham radio, again)
73, Ed - KL7UW
At 06:09 PM 4/16/2010, Gary \"Joe\" Mayfield wrote:
>Again if price is no object, you should be able to do it with a K3 from
>Elecraft (using the sub receive and their transverters).
>
>73,
>Joe kk0sd
>
>-----Original Message-----
>From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
>Behalf Of Michael Tondee
>Sent: Friday, April 16, 2010 8:26 PM
>To: amsat-bb@xxxxx.xxx
>Subject: [amsat-bb] Re: Radios for satellite operations
>
>The Kenwood TS-2000 and 2000X are still out there. They have an annoying
>birdie right smack dab on the downlink of SO-50 and AO-27 but both of
>those are FM sats. You can work around the birdie with a preamp but the
>pass time is shortened a bit because you are waiting for the receive
>frequency to get a little bit away from the birdie so you can hear. I
>don't know of any issues with SSB/CW sats though.
> Icom is coming out with a new radio that has HF plus sat capapbility
>but for the price I've heard you could just about buy a Flex 5000A and
>add the soon upcoming V/U module for not much more.
> The Flex 5000A is cutting edge technology but you have to get over
>most hams confounded affinity for knobs. I just got my 5000A today. I
>chose it over replacing the TS-2000X I used to have with another. It
>will be awhile before I can afford to add the V/U module but I'm willing
>to wait because IMHO the Flex is head and shoulders above any other
>radio on the market today.
>73,
>Michael, W4HIJ
>On 4/16/2010 12:18 PM, Jacob Tennant wrote:
> > Was wondering today after searching around on the internet, what radios
>are
> > people using for satellite operations as I noticed the ICOM IC-910H and
>the
> > Yaesu FT-847 are now discontinued?
> >
> >
> >
> > Was hoping to get into the SSB/CW satellites but was hoping to do it on
a
> > new radio, but it seems the satellite radios are disappearing from the
> > market.
> >
> >
> >
> > I do have a Yaesu FT-857D that I am getting setup to do the FM
satellites
> > with and will try the SSB/CW satellites if I can do it with that radio.
> >
> >
> >
> > Jacob Tennant - K8JWT
> >
> >
>
>_______________________________________________
>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
73, Ed - KL7UW, WD2XSH/45
======================================
BP40IQ 500 KHz - 10-GHz www.kl7uw.com
EME: 144-600w, 432-100w, 1296-60w, 3400-fall 2010
DUBUS Magazine USA Rep dubususa@xxxxxxx.xxx
======================================
_______________________________________________
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: 6
Date: Sat, 17 Apr 2010 07:54:56 -0500
From: "Rick - WA4NVM" <wa4nvm@xxxxxxx.xxx>
Subject: [amsat-bb] Re: Arecibo
To: "i8cvs" <domenico.i8cvs@xxx.xx>, "Luc Leblanc"
<lucleblanc6@xxxxxxxxx.xx>, "AMSAT-BB" <amsat-bb@xxxxx.xxx>
Message-ID: <A9FC42D7243A41029F647723DFEA65E4@xxxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
>> Luc and All,
>>
>> I was able to copy the CW signal "fair" at times (when my local pulse
>> noise was down) today around 1840 utc with just a Cushcraft 432-20T
>>
>> 73 all,
>> Rick WA4NVM
>>
> Hi Rick, WA4NVM
>
> As far I remember the 432-20T should be a 10 + 10 elements crossed yagi.
> Do you remember if your antenna is connected for RHCP or LHCP ?
>
> Since Arecibo transmit a RHCP toward the moon and the moon reflects
> back a LHCP wave if you was able to copy the CW signal then your antenna
> should be LHCP.
>
> Please let us know if possible.
>
> Tanks
>
> 73" de
>
> i8CVS Domenico
You are correct about the antenna. It is a 10 + 10 element crossed yagi.
At the
time I put it back up a few years ago, I didn't know what the FM birds were
using,
RH or LH. So, I took the delay line off and hooked up both driven elements
to
the phasing harness "Y" in what Cushcraft called "axial radiation".
I would think this would give me the "best and worst" of everything. It
would make
my uplink power and downlink receive "half" of what they could be if they
were
phased correctly. Since I don't have any way to switch polarity, I use it
this way
on all the birds. I'm still very surprised I heard anything on this setup.
73,
Rick WA4NVM
------------------------------
Message: 7
Date: Sat, 17 Apr 2010 09:07:59 -0400
From: Michael Tondee <mat_62@xxxxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: Radios for satellite operations
To: amsat-bb@xxxxx.xxx
Message-ID: <4BC9B2AF.8010401@xxxxxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hi Ed,
I think the K3 is a great radio. My uncle has one and loves it. Sounds
like you have made an excellent choice for your situation. I can fully
understand not wanting to lug around a PC ( even a laptop) for portable
work.
The only comparison you make that puzzles me is cost. I haven't added
up the exact prices so I could be a little off but it seems to me that
the equipment you mention is going to come out about the same price wise
as the Flex 5K with the V/U module added.
Of course you would have to add in the cost of the PC but in my home
station application I already have that here. As you say though, "each
to his own choice" and I hope you enjoy your new setup. Sounds like a
nice one.
I agree with the comment about spending so much on ham radio. I intend
for my 5k to last me the rest of my hamming days and so does my wife!!
HI HI :-)
73,
Michael, W4HIJ
On 4/17/2010 2:44 AM, Edward Cole wrote:
> Of course, each to his own choice.
>
> I decided on the K3/10 (10w version of the K3), with subreceiver and
> transverter interface (and a few other goodies) ...total $3000
> Add a new DEMI 144/28 xvtr $500, and later a DEMI 432/28 xvtr kit
> $400. These are the new design to be released in early June.
> I added a ARR 50-Mhz preamp and building a 300w HF amp kit (cost $150).
>
> When I have fully investigated running the K3 for full duplex under
> sw control I will consider letting my FT-847 go. Keeping it for now
> (also because I will not get the 432 xvtr right away).
>
> Why not the Flex-500 + U/V? Well, cost is one, and the need to have
> a computer was another. I will use my 6-lb. K3 for portable mw
> operation (mainly CW) so its size, weight and ability to be fully
> used without toting along a computer.
>
> Undoubtedly the K3 and Flex-5000 are the top radios in the amateur
> market as far as performance specs. I've had my K3 for about a month
> and am still learning more about it. Its a keeper. (better be as I
> will never spend this much on ham radio, again)
>
> 73, Ed - KL7UW
>
> At 06:09 PM 4/16/2010, Gary \"Joe\" Mayfield wrote:
>
>> Again if price is no object, you should be able to do it with a K3 from
>> Elecraft (using the sub receive and their transverters).
>>
>> 73,
>> Joe kk0sd
>>
>> -----Original Message-----
>> From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
>> Behalf Of Michael Tondee
>> Sent: Friday, April 16, 2010 8:26 PM
>> To: amsat-bb@xxxxx.xxx
>> Subject: [amsat-bb] Re: Radios for satellite operations
>>
>> The Kenwood TS-2000 and 2000X are still out there. They have an annoying
>> birdie right smack dab on the downlink of SO-50 and AO-27 but both of
>> those are FM sats. You can work around the birdie with a preamp but the
>> pass time is shortened a bit because you are waiting for the receive
>> frequency to get a little bit away from the birdie so you can hear. I
>> don't know of any issues with SSB/CW sats though.
>> Icom is coming out with a new radio that has HF plus sat capapbility
>> but for the price I've heard you could just about buy a Flex 5000A and
>> add the soon upcoming V/U module for not much more.
>> The Flex 5000A is cutting edge technology but you have to get over
>> most hams confounded affinity for knobs. I just got my 5000A today. I
>> chose it over replacing the TS-2000X I used to have with another. It
>> will be awhile before I can afford to add the V/U module but I'm willing
>> to wait because IMHO the Flex is head and shoulders above any other
>> radio on the market today.
>> 73,
>> Michael, W4HIJ
>> On 4/16/2010 12:18 PM, Jacob Tennant wrote:
>>
>>> Was wondering today after searching around on the internet, what radios
>>>
>> are
>>
>>> people using for satellite operations as I noticed the ICOM IC-910H and
>>>
>> the
>>
>>> Yaesu FT-847 are now discontinued?
>>>
>>>
>>>
>>> Was hoping to get into the SSB/CW satellites but was hoping to do it on a
>>> new radio, but it seems the satellite radios are disappearing from the
>>> market.
>>>
>>>
>>>
>>> I do have a Yaesu FT-857D that I am getting setup to do the FM satellites
>>> with and will try the SSB/CW satellites if I can do it with that radio.
>>>
>>>
>>>
>>> Jacob Tennant - K8JWT
>>>
>>>
>>>
>>
>>
>
------------------------------
Message: 8
Date: Sat, 17 Apr 2010 08:13:22 -0600
From: James Duffey <jamesduffey@xxxxxxx.xxx>
Subject: [amsat-bb] Re: Radios for satellite operations
To: Edward Cole <kl7uw@xxxxxxxxx.xxx>
Cc: James Duffey <jamesduffey@xxxxxxx.xxx>, amsat-bb@xxxxx.xxx
Message-ID: <A192C671-B4BF-4FE1-B394-C16500A78C56@xxxxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Can the K3 do full duplex in the same band? Elecraft's FAQ seems to indicate
that they do not support this mode:
"Can the subreceiver provide unbroken audio using any antenna input while
the K3 is transmitting?'
"This is "full duplex" operation, which is very difficult to do inside a
single cabinet. However, it may be possible if you're using the transverter
I/O (0 dBm TX power). We'll be testing this case and will post full specs
later."
Does the firmware support this?
I am very interested in your experiments. Will you need to modify the DEMI
transverter IFs? - Duffey
On Apr 17, 2010, at 12:44 AM, Edward Cole wrote:
> Of course, each to his own choice.
>
> I decided on the K3/10 (10w version of the K3), with subreceiver and
> transverter interface (and a few other goodies) ...total $3000
> Add a new DEMI 144/28 xvtr $500, and later a DEMI 432/28 xvtr kit
> $400. These are the new design to be released in early June.
> I added a ARR 50-Mhz preamp and building a 300w HF amp kit (cost $150).
>
> When I have fully investigated running the K3 for full duplex under
> sw control I will consider letting my FT-847 go. Keeping it for now
> (also because I will not get the 432 xvtr right away).
>
> Why not the Flex-500 + U/V? Well, cost is one, and the need to have
> a computer was another. I will use my 6-lb. K3 for portable mw
> operation (mainly CW) so its size, weight and ability to be fully
> used without toting along a computer.
>
> Undoubtedly the K3 and Flex-5000 are the top radios in the amateur
> market as far as performance specs. I've had my K3 for about a month
> and am still learning more about it. Its a keeper. (better be as I
> will never spend this much on ham radio, again)
>
> 73, Ed - KL7UW
--
James Duffey KK6MC
DM65tc
Cedar Crest NM
< jamesduffey@xxxxxxx.xxx >
------------------------------
Message: 9
Date: Sat, 17 Apr 2010 18:00:11 +0200
From: "i8cvs" <domenico.i8cvs@xxx.xx>
Subject: [amsat-bb] Re: Arecibo
To: "Nick Pugh K5QXJ" <quadpugh@xxxxxxxxx.xxx>, "AMSAT-BB"
<amsat-bb@xxxxx.xxx>
Message-ID: <002601cade47$0f542ee0$0201a8c0@xxx.xx>
Content-Type: text/plain; charset="iso-8859-1"
Hi Nick, K5QXJ
Is your KLM 436 a linearly polarized antenna or a circularly polarized
antenna ?
If it is circularly polarized switch polarization to LHCP because Arecibo
transmit RHCP toward the moon but the moon reflect back isotropically
a signal in LHCP
If your KLM 436 is linearly polarized no matter if it is horizontal or
vertical because Arecibo comes to you circularly LHCP
About the sun-noise supposing that the gain of your antenna is 16 dBi
corresponding to the gain of a dish with diameter of 6.5 feet and that
the sun activity yesterdat 16 April was 75 sfu at 2800 MHz (10.7 cm)
using the program NOISE.EXE with 75 kelvin for your 1 dB of NF
for preamplifier and 70 kelvin for the antenna temperature with the
elevation of the sun 75? it outcomes that the sun-noise you should
receive as a (S+N)/N ratio is 2.8 dB maximum
So you receive the right sun-noise figure from your system no matter
if the antenna is linearly or circularly polarized because the sun-noise
is a uncoherent signal no polarized.
In a separate email I have sent to you the software NOISE.EXE a
very simple but powerful program working in DOS
73" de
i8CVS Domenico
----- Original Message -----
From: "Nick Pugh K5QXJ" <quadpugh@xxxxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Sent: Saturday, April 17, 2010 1:09 PM
Subject: [amsat-bb] Arecibo
> Hi All
>
> I have a KLM 436 with < 1 db preamp I did not here them yesterday. I have
> about 2 db of sun noise. The question I have for those who copied Arecibo
> yesterday how much sun noise do you have in a 2.4 KHz band with filter?
>
>
>
>
>
> Thanks
>
>
>
> nick
>
> Office 337 593 8700
>
> Cell 337 258 2527
>
>
>
> Helping UL become a world Class Engineering and Educational School
>
>
>
> _______________________________________________
> 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: 10
Date: Sat, 17 Apr 2010 18:20:43 +0200
From: "i8cvs" <domenico.i8cvs@xxx.xx>
Subject: [amsat-bb] Re: Arecibo and circular polarization using cheap
yagis
To: "Idle-Tyme" <nss@xxx.xxx>, "AMSAT-BB" <amsat-bb@xxxxx.xxx>
Message-ID: <000001cade4a$2fe0faa0$0201a8c0@xxx.xx>
Content-Type: text/plain; charset="iso-8859-1"
----- Original Message -----
From: "Idle-Tyme" <nss@xxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Sent: Saturday, April 17, 2010 4:51 AM
Subject: [amsat-bb] Re: Arecibo and circular polarization using cheap yagis
But what about antennas like the M2 ants where it's a balanced feed, and
there is no + side of the element or coax?
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
Hi Idle-Tyme
The M2 antennas uses folded dipoles wich is a balanced system with
impedance of 200 ohm.
In order to transform the impedance from 200 to 50 ohm and change
from a balanced system (the folded dipole) to a unbalanced system
(the 50 ohm feed line) a 1/2 electrical wavelenght of 50 ohm coax
cable called balun is connected with the inner conductors across the
dipole studs.
the braids of the 1/2 electrical wavelenght coax balun are soldered
togheter with the braid of the 50 ohm coax feed line and grounded
to the center of the antenna boom.
The side of the folded dipole connected to the inner conductor of the
feed line is the (+) side of the element.
I hope this helps
73" de
i8CVS Domenico
------------------------------
Message: 11
Date: Sat, 17 Apr 2010 18:57:21 +0200
From: "i8cvs" <domenico.i8cvs@xxx.xx>
Subject: [amsat-bb] Re: Arecibo
To: "Rick - WA4NVM" <wa4nvm@xxxxxxx.xxx>, "Luc Leblanc"
<lucleblanc6@xxxxxxxxx.xx>, "AMSAT-BB" <amsat-bb@xxxxx.xxx>
Message-ID: <005a01cade4f$0bfd1b00$0201a8c0@xxx.xx>
Content-Type: text/plain; charset="iso-8859-1"
----- Original Message -----
From: "Rick - WA4NVM" <wa4nvm@xxxxxxx.xxx>
To: "i8cvs" <domenico.i8cvs@xxx.xx>; "Luc Leblanc"
<lucleblanc6@xxxxxxxxx.xx>; "AMSAT-BB" <amsat-bb@xxxxx.xxx>
Sent: Saturday, April 17, 2010 2:54 PM
Subject: Re: [amsat-bb] Re: Arecibo
>
> You are correct about the antenna. It is a 10 + 10 element crossed yagi.
> At the time I put it back up a few years ago, I didn't know what the FM
> birds were using, RH or LH. So, I took the delay line off and hooked up
> both driven elements to the phasing harness "Y" in what Cushcraft called
> "axial radiation".
>
> I would think this would give me the "best and worst" of everything. It
> would make my uplink power and downlink receive "half" of what they could
> be if they were phased correctly. Since I don't have any way to switch
> polarity, I use it this way on all the birds. I'm still very surprised I
> heard anything on this setup.
>
> 73,
>
> Rick WA4NVM
>
Hi Rick, WA4NVM
I know very well the Cushcraft 432-20T and I have one here never used.
It is a very short antenna and it's gain is much lower than the minimum
of 15 dBi required to receive Arecibo.
By the way if you have removed the delay line from the phasing arness
and if you feed both dipoles with the Y arness than you get an "axial
radiation" wich is a linear radiation with a maximum field at 45? and
135? if the antenna elements are crossed like the signe +
Since Arecibo comes to you circularly polarized LHCP you should be
in condition to receive Arecibo not "fair at time" but much better than
actually provided the gain of the 432-20T would be a little bit greater.
Tank you very much for your information.
73" de
i8CVS Domenico
------------------------------
Message: 12
Date: Sat, 17 Apr 2010 13:23:37 -0400 (EDT)
From: Doug Faunt N6TQS +1-510-655-8604 <faunt@xxxxx.xxx>
Subject: [amsat-bb] Re: Radios for satellite operations
To: jamesduffey@xxxxxxx.xxx
Cc: amsat-bb@xxxxx.xxx
Message-ID: <20100417172337.5649A14B98@xxxxxx.xxxxx.xxx>
Re: K3 full-duplex- I asked Wayne about this today, at Visalia.
It's theoretically possible in the hardware, but there's a LOT of
software/firmware necessary, and no one is working on that.
It MAY happen, but NOT soon.
73, doug
From: James Duffey <jamesduffey@xxxxxxx.xxx>
Date: Sat, 17 Apr 2010 08:13:22 -0600
Can the K3 do full duplex in the same band? Elecraft's FAQ seems to
indicate that they do not support this mode:
"Can the subreceiver provide unbroken audio using any antenna input while
the K3 is transmitting?'
"This is "full duplex" operation, which is very difficult to do inside a
single cabinet. However, it may be possible if you're using the transverter
I/O (0 dBm TX power). We'll be testing this case and will post full specs
later."
Does the firmware support this?
I am very interested in your experiments. Will you need to modify the
DEMI transverter IFs? - Duffey
On Apr 17, 2010, at 12:44 AM, Edward Cole wrote:
> Of course, each to his own choice.
>
> I decided on the K3/10 (10w version of the K3), with subreceiver and
> transverter interface (and a few other goodies) ...total $3000
> Add a new DEMI 144/28 xvtr $500, and later a DEMI 432/28 xvtr kit
> $400. These are the new design to be released in early June.
> I added a ARR 50-Mhz preamp and building a 300w HF amp kit (cost $150).
>
> When I have fully investigated running the K3 for full duplex under
> sw control I will consider letting my FT-847 go. Keeping it for now
> (also because I will not get the 432 xvtr right away).
>
> Why not the Flex-500 + U/V? Well, cost is one, and the need to have
> a computer was another. I will use my 6-lb. K3 for portable mw
> operation (mainly CW) so its size, weight and ability to be fully
> used without toting along a computer.
>
> Undoubtedly the K3 and Flex-5000 are the top radios in the amateur
> market as far as performance specs. I've had my K3 for about a month
> and am still learning more about it. Its a keeper. (better be as I
> will never spend this much on ham radio, again)
>
> 73, Ed - KL7UW
------------------------------
Message: 13
Date: Sat, 17 Apr 2010 10:53:21 -0400
From: John Zaruba Jr <k2za@xxxxx.xxx>
Subject: [amsat-bb] HO-68 Mode Schedule
To: amsat-bb@xxxxx.xxx
Message-ID: <672343D2-87AB-4CCA-BA41-4A95C2CD12CF@xxxxx.xxx>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
Does anyone know if HO-68 will move to an automated schedule after
commissioning?
Does the satellite have the ability to automatically schedule it's
operational state or does it require interaction from the ground
command station? The english language version of CAMSAT's website does
not discuss this aspect of the satellite's operation.
73,
John K2ZA
------------------------------
Message: 14
Date: Sat, 17 Apr 2010 13:41:01 -0400
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
Subject: [amsat-bb] Arecibo--MUCH louder today!
To: "Amsat-bb" <amsat-bb@xxxxx.xxx>
Message-ID: <6hgy1e0011e3qRF05hgy3z@xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Hearing test carriers MUCH better today! Give it a listen, they are saying
350W output today (rather than 30W yesterday ;)
73!
Mark N8MH
Mark L. Hammond [N8MH]
------------------------------
Message: 15
Date: Sat, 17 Apr 2010 18:57:59 +0100
From: "David Barber" <david.barber@xxxxxxxxxxxxx.xx.xx>
Subject: [amsat-bb] Re: Arecibo--MUCH louder today!
To: <amsat-bb@xxxxx.xxx>, "'Moon-Net'" <moon-net@xxxxxxxxx.xxxxxx.xxx>
Cc: "'Mark L. Hammond'" <marklhammond@xxxxx.xxx>
Message-ID: <36494D4808E84EE9AAC4D6D51940B946@xxxxxxxx>
Content-Type: text/plain; charset="us-ascii"
Hearing them R3 S1 here in UK. Peaking S3.
19 element Tonna on 4ft ground mounted tripod.
SSB SP7000
IC910
David
G8OQW
********
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Mark L. Hammond
Sent: 17 April 2010 18:41
To: Amsat-bb
Subject: [amsat-bb] Arecibo--MUCH louder today!
Hearing test carriers MUCH better today! Give it a listen, they are saying
350W output today (rather than 30W yesterday ;)
73!
Mark N8MH
Mark L. Hammond [N8MH]
_______________________________________________
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: 16
Date: Sat, 17 Apr 2010 10:31:42 -0800
From: Edward Cole <kl7uw@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: Arecibo--MUCH louder today!
To: <amsat-bb@xxxxx.xxx>
Message-ID: <201004171831.o3HIVgtW023209@xxxxxxx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
At 09:41 AM 4/17/2010, Mark L. Hammond wrote:
>Hearing test carriers MUCH better today! Give it a listen, they are
>saying 350W output today (rather than 30W yesterday ;)
>
>73!
>
>Mark N8MH
>
>Mark L. Hammond [N8MH]
>
>
>_______________________________________________
>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
Nothing heard here, but the M2 11-element yagi (11.3 dBd/13.4 dBi)
cannot be elevated (Moon is now 18-deg) so probably Moon is out of
the beam. I am using a Gasfet preamp on this antenna whose normal
use is for terrestrial 70cm SSB/FM.
Back to work on getting the dish ready (perhaps tomorrow?): hooking
up 432 antenna, preamps for 432 & 1296, and 432 TR relay, plus
getting az-el system calibrated. Got the 432 & 1296 Pa's installed
yesterday and some things that didn't work out and will have to be
done after the weekend. All wiring to the dish have to be tested,
yet. Yeah, a bit behind the curve for working Arecibo ;-)
73, Ed - KL7UW, WD2XSH/45
======================================
BP40IQ 500 KHz - 10-GHz www.kl7uw.com
EME: 144-600w, 432-100w, 1296-60w, 3400-fall 2010
DUBUS Magazine USA Rep dubususa@xxxxxxx.xxx
======================================
------------------------------
Message: 17
Date: Sat, 17 Apr 2010 19:38:08 +0100
From: "David Barber" <david.barber@xxxxxxxxxxxxx.xx.xx>
Subject: [amsat-bb] Re: [Moon-net] Arecibo--MUCH louder today!
To: <amsat-bb@xxxxx.xxx>, "'Moon-Net'" <moon-net@xxxxxxxxx.xxxxxx.xxx>
Message-ID: <F2CB9096E72949BA801752EBA3B34DBB@xxxxxxxx>
Content-Type: text/plain; charset="us-ascii"
Now R5 S5 here in UK @ 18.37UTC
What a fantastic signal...
David
G8OQW
********
-----Original Message-----
From: moon-net-bounces@xxxxxxxxx.xxxxxx.xxx
[mailto:moon-net-bounces@xxxxxxxxx.xxxxxx.xxxx On Behalf Of David Barber
Sent: 17 April 2010 18:58
To: amsat-bb@xxxxx.xxxx 'Moon-Net'
Cc: 'Mark L. Hammond'
Subject: Re: [Moon-net] [amsat-bb] Arecibo--MUCH louder today!
Hearing them R3 S1 here in UK. Peaking S3.
19 element Tonna on 4ft ground mounted tripod.
SSB SP7000
IC910
David
G8OQW
********
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Mark L. Hammond
Sent: 17 April 2010 18:41
To: Amsat-bb
Subject: [amsat-bb] Arecibo--MUCH louder today!
Hearing test carriers MUCH better today! Give it a listen, they are saying
350W output today (rather than 30W yesterday ;)
73!
Mark N8MH
Mark L. Hammond [N8MH]
_______________________________________________
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
_______________________________________________
Moon-Net posting and subscription instructions are at
http://www.nlsa.com/nets/moon-net-help.html
------------------------------
_______________________________________________
Sent via amsat-bb@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
http://amsat.org/mailman/listinfo/amsat-bb
End of AMSAT-BB Digest, Vol 5, Issue 173
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