At 12:37 PM 11/29/2010, Zachary Beougher wrote:
I apologize if there were any stations looking for me on HO68
today. We ended up leaving Troy sooner than I thought. Even though
I wanted to get on HO68, I think it worked out best that we left
early - I was receiving several questioning looks
At 09:10 AM 11/19/2010, Robert Bruninga wrote:
... a typical 1/4 wave antenna... is super for
terrestrial work, where we want to have as much
power as possible going out to the horizon...
but... from a station up 20 degrees or more, say,
you'll find that you're working with much less ...
At 02:19 PM 11/19/2010, Andy MacAllister wrote:
New HAMSATS could go up This Evening!
Check the specs, check the launch status, and watch it.
Start here http://fastrac.ae.utexas.edu/index.php
73 de Andy W5ACM
___
Sent via amsat...@amsat.org.
At 10:06 AM 10/8/2010, Sebastian wrote:
After being on 2 meter EME for about a month, I tuned my rig to 432
MHz this morning and copied OK1DFC at -20dB. I posted on the N0UK
logger and Zdenek asked me to call him. I had nothing to lose so I
obliged. Much to my surprise, we had a QSO, my
At 06:53 PM 9/11/2010, Matt Patterson wrote:
Just won this antenna on ebay for my portable V/S setup. Hope it will work
for what I'm wanting to do.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=160477089933
item=160477089933
Plan on mounting
I recently purchased the HyperGain® HG2409PCR
flat-panel 8-dBic RHCP 2.4 GHz antenna from L-com
to use for s-band Leo sats. I got a good price
but now they are listed for $28.99. I have a 0.8
dBNF DEMI preamp to use with my Drake
downconverters (left-over from AO-40 era).
Mine came with an address label. Received last week.
73, Ed - KL7UW
At 05:53 AM 9/3/2010, Gary \Joe\ Mayfield wrote:
My Journal arrived today
Does your Journal have your address on the label?
Mine has only my name and a bar code. I'm sure the bar code must be my
address, but my other
I received my copy of the May/June Journal today
73, Ed - KL7UW, WD2XSH/45
==
BP40IQ 500 KHz - 10-GHz www.kl7uw.com
EME: 144-QRT*, 432-100w, 1296-QRT*, 3400-fall 2010
DUBUS Magazine USA Rep dubus...@hotmail.com
==
*temp
At 11:28 AM 7/31/2010, i8cvs wrote:
- Original Message -
From: wa4...@comcast.net
To: AMSAT amsat-bb@amsat.org
Sent: Saturday, July 31, 2010 8:45 PM
Subject: [amsat-bb] AO27/TS2000
Just installed a preamp Ar2 { Advance Reciever Research) M# MSP432DG-160
and the birdy that the TS2000
That may be because the source of the birdie is near the radio and
not necessarily coming from the radio (e.g. nearby computers).
The FT-847 is famous for its internal birdies, but they are either
gone or diminished when I connect my eme antenna with tower-top
preamp. Some do not disappear so
This often requested list suggests another:
In addition to the D700, D710, TH-D7A (out of production), what other
radios are similarly equipped with APRS texting GPS. I have seen
recent advertisements suggesting this and some day will upgrade to
nice dual-band, duplex, APRS radio.
Has such
I am not sure what the requirements are for VUCC, WAS, DXCC other
awards but for valid contacts from rovers in ARRL VHF Contests there
is a requirement that the rover moves a min distance between
grids. This is to prevent a method of shortcutting contacts called
grid circling. So, even with
John,
I built essentially the same support: 3-foot RS tripod on plywood
square and 6-foot mast; used for roving in the back of my pickup with
a 3-element 6m beam, 2m 70cm 33cm yagis. It is high enough to
clear the roof of the truck cab but not snag overhead wires on the
road. It also is
Here is what I calculate:
10 dBm Tx power
0 dBiczero gain Tx antenna
20 dBic Rx antenna gain
0 dB Cross polarity loss
902 MHz
0.001 millions of km (1000km)
20 K sky temp
40 K Rx antenna temp
36 K receiver noise temp
20 Hz bandwidth
151.5 dB space loss at
Sorry a labled two lines backward:
-121.5 dBm is Ps signal level received from the s/c
-125.8 dBm is Pn sensitivity of receive system
S/N = Ps-Pn in dB
I also ignored any squint angle for the
transmitter on the ISS so that could add a lot more dB of loss.
But the link is not as bad as one
At 12:19 PM 6/30/2010, Michael Tondee wrote:
I'm in the process of putting together a portable FM satellite station
and I intend to homebrew the antenna using the WA5VJB cheap yagi
design. In looking at a picture in the May/June 2007 AMSAT Journal I've
noticed that the so called AMSAT
, John
On Jun 8, 2010, at 10:15 PM, Edward R Cole wrote:
Thanks, John!
At 02:37 PM 6/7/2010, John Belstner wrote:
Hi Domenico,
The HG2414P is a linearly polarized patch.
http://www.34t.com/PDF/hg2414p.pdf
The HG2409PC is a circular polarized patch (LH or RH available).
http
Thanks, John!
At 02:37 PM 6/7/2010, John Belstner wrote:
Hi Domenico,
The HG2414P is a linearly polarized patch.
http://www.34t.com/PDF/hg2414p.pdf
The HG2409PC is a circular polarized patch (LH or RH available).
http://www.34t.com/PDF/hg2409pc.pdf
Just ordered one for $14.99+ shipping. I
For space oriented antenna (satellite, eme, radio astronomy) that are
elevated to the sky, the height above ground should not matter since
ground-gain is not a factor once a minimum of elevation occurs. Many
antennas in these services are mounted close to ground to achieve
several objectives:
At 04:51 PM 6/3/2010, Pete Norris, K1HZU wrote:
Hi All:
I am rebuilding a 440 MHZ Helix that I built several years ago . It
worked very well, but I would like to reduce the size of the
reflector to a more manageable size than I had before. The only
reference to reflector size I can find is,
At 10:23 AM 6/3/2010, Clint Bradford wrote:
Two visuals that really put the depth and breadth of the Gulf oil
disaster in perspective for me -
A widget that converts barrels into gallons as it maintains a
running total of the spill - http://tinyurl.com/bp-widget
And a site where you can
Just a quick comment on Doppler effects. Doppler
offset from the resting frequency is observable
only on the radial velocity component of the
satellite and that is usually most significant at
AOS or LOS. BUT what the operator is usually
responding is to the rate of change of Doppler
and
At 03:44 AM 5/27/2010, Bill Jones wrote:
On 26 May 2010 at 23:06, Auke de Jong wrote:
If Galaxy 15's transponders are all of opposite polarities, then wouldn't
the potential interference be cancelled-out by around -60dB due to the
polarisation mis-match on both the uplink and downlink
At 02:38 PM 5/17/2010, tosca...@umn.edu wrote:
On May 16 2010, Sebastian wrote:
Perhaps others such as DEMI, will see this as an opportunity and come up
with alternatives?
Well, keep in mind that DEMI's strength is in transverters, and what is
hard to obtain for satellite operation from most
Watching from the sidelines (with my FT-847 and K3).
One of the reasons I held onto my FT-847 was that with the addition
of my DEMI 144/1296 xvtr the total outlay (when they were new) was
$1600 + $395 ~ $2K. And that covers 160m - 6m, 2m, 70cm, 23cm. The
FT-847 IS a satellite radio,
At 12:07 PM 5/11/2010, i8cvs wrote:
- Original Message -
From: Greg D. ko6th_g...@hotmail.com
To: w...@montana.com
Cc: amsat-bb@amsat.org
Sent: Tuesday, May 11, 2010 7:47 AM
Subject: [amsat-bb] Re: PC clock
Hi Larry,
Ok, I understand the need for an accurate clock, though I believe
At 03:49 PM 5/2/2010, John wrote:
I have owned the FT-847 for five years and tried the TS2000 extensively.
Both are excellent rigs. The only downside I see with the TS2000 is the
birdie. However, it has a more sensitive and quieter receiver, has an
antenna tuner and dual receive. On the other
At 06:51 PM 5/2/2010, James Duffey wrote:
On May 2, 2010, at 7:38 PM, Edward R Cole wrote:
But in my opinion K3 (dual Rx) + DEMI is far above the TS2000x for
near the same money.
While I understand the K3 performance being above the TS-2000X, I
don't understand the near the same money
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