What, exactly, is a helicoil antenna?
On 12-Jul-11 00:39, Kevin Deane wrote:
>
> Hello all, whats the take on these antennas? I am sure someone on here has
> used them and they certainly look cool but how do they perform?
>
> Dont you have to switch polerization on a cross polerized yagi?
>
> I
Don't forget the old FT-290, 490 and 690 series from Yaesu and the IC202 and
70cM versions from Icom.
Great portables of their time.
On 05-Jul-11 17:40, Patrick STODDARD (WD9EWK/VA7EWK) wrote:
> All you need now is something that will transmit and receive in all modes
> at 70cm. Maybe an old FT
d. Entering Satellite Frequency Data
Satellite frequency data is used by SatPC32 to tune your radio. This
information is stored in the Doppler.SQF file
located in the SatPC32 program directory. This is a text file and you should
follow the same procedures to modify it as
you would use for any
From HRD Satellite Tracking, click Satellite
From the window that opens, click the Kepler Data tab
From it's gidgets, click Add File
From the box that pops up, select your elements file.
Tick the Enable box for that file and untick all others.
Click Download Now.
It should update your definitions
http://www.qsl.net/oh2mcn/c6.htm
On 14-Jun-11 22:33, normn3...@stny.rr.com wrote:
> Hi all!
> My wife and I are heading down to the Bahamas in a few weeks. What are the
> chances of getting a reciprocal license once I get to Nassau?
> Thanks,
> Norm
>
The smartphone was just the computer and sensors. The communication was by UHF
radio.
On 09-Jun-11 15:09, Dave Webb KB1PVH wrote:
> Maybe this?
>
> Also, here is an article on their previous flight:
> http://www.foxnews.com/scitech/2011/02/11/
> cell-phones-space-smartphone-nasa/ 73,
>
___
Where does it say there's a cellphone?
On 09-Jun-11 14:24, Joe wrote:
> I thought per FCC rulings that cell phone use in these balloon flights
> is not legal?
>
> Joe WB9SBD
>
> The Original Rolling Ball Clock
> Idle Tyme
> Idle-Tyme.com
> http://www.idle-tyme.com
>
> On 6/9/2011 8:27 AM, Bob Brun
It's certainly the case that many people operate "out in the field" and do not
have a computer available.
My radios are not computer controlled, even in the shack.
On 09-Jun-11 11:08, Tom Schaefer, NY4I wrote:
> Is the state of the art still such that we are all using radios that do not
> suppo
.
On 08-Jun-11 03:33, Justin Pinnix wrote:
> Guess I learned the ITU version :-)
>
> http://en.wikipedia.org/wiki/Simplex_communication
>
> On Tuesday, June 7, 2011, Nigel Gunn G8IFF/W8IFF wrote:
>> That's half duplex, not simplex.
>>
>> On 07-Jun-11 14:5
That's half duplex, not simplex.
On 07-Jun-11 14:55, Justin Pinnix wrote:
> A packet satellite can also be operated simplex (TX and RX on the same
> frequency).
___
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author.
Not an AMSAT-NA
It could but it would require a dedicated computer. Packet just works within
the TNC or radio.
On 06-Jun-11 20:07, Greg Dober wrote:
>
>
> Could a system like the ISS be switched to a PSK31 or similar mode in the
> future?
___
Sent via AMSAT-BB@amsat.o
145.000 is not a good choice of frequency. It is a repeater input frequency.
On 04-Jun-11 17:37, jerry wrote:
> Is this a good time for EME comm. ? Moon seems right for it , but never
> tried it . Is psk31 possible ? What freq. ? Orbitron says 145.000 ? Going to
> send cq throughout the day via
Thanks Damon.
It takes hundreds of volunteers and countless free time to make it what it is.
On 23-May-11 15:55, wa4...@comcast.net wrote:
> I have heard of how great the Dayton hamfest is and now I can say its was
> AWSOME
> Hot Friday Night WA4HFN em55 Damon
> __
I agree with the Amsat times for the next pass over west coast.
Get a free copy of Orbitron.
On 16-May-11 22:17, Paul Delaney - K6HR wrote:
>
> OK now I'm getting somewhere!
> My SatPC32 predictions DO NOT match the info on the AMSAT link below!
>
> My location appears to be entered correctly into
ry Beougher
> Sent: Monday, May 16, 2011 10:00 AM
> To: Nigel Gunn G8IFF/W8IFF
> Cc: amsat-bb@amsat.org
> Subject: Re: [amsat-bb] Digi @ Dayton?
>
> Just a regular position packet.
>
> Zack
> KD8KSN
>
> -Original Message- From: Nigel Gunn G8IFF/W8IFF
> Sent: Mo
What do you want to digi?
There are several APRS stations on 144.390 but I'm not aware of any general
packet stations.
On 16-May-11 13:42, Zachary Beougher wrote:
> Hi All,
>
> Does anyone know if anyone sets up a digipeater at Dayton, or do we rely on
> the local digi’s?
>
> 73,
>
> Zack
> KD
Anybody have one of what?
On 08-May-11 02:05, R Oler wrote:
>
> anyone have one? There must have been some telecons by now Robert G. Oler
> WB5MZO
>
> ___
> Sent via AMSAT-BB@amsat.org. Opinions expressed are thos
Works fine here.
On 13-Apr-11 22:57, Mark L. Hammond wrote:
> Anybody have "good luck" with the new beta version? I get errors and haven't
> yet been able to get a file downloaded...
>
> ARGHHH!!!
>
> Mark N8MH
___
Sent via AMSAT-BB@amsat.org. Opinions
That's a serious loss of spectrum.
On 13-Apr-11 21:00, Trevor . wrote:
> Ukraine Amateurs have lost Satellite allocations at 1.2, 2.4, 5, 10 GHz.
> See
> http://www.southgatearc.org/news/april2011/ukranian_rules.htm
>
> 73 Trevor M5AKA
> Daily Amateur Radio Email/RSS News: http://www.southgatearc.
I found, some years ago when just a visitor to the US, that the format of the
call was much more important than the
phonetics.
I took part in field day using my UK call which properly should have been
W/G8IFF, Whiskey Slash Golf Eight India
Foxtrot Foxtrot.
Most had problems with W/G8IFF, G8IF
I'm pretty certain you're going to be looking at something custom made.
At qrp powers it might not be a problem to DIY a set of filters but with
needing over 100dB of isolation between each
band it sounds expensive.
On 09-Apr-11 15:28, Floyd Rodgers wrote:
> Well, I do not actually need ports fo
And its diplexer and duplexer.
On 09-Apr-11 15:15, Anthony Monteiro wrote:
> Dear Friends,
>
> Perhaps this will help clear up the confusion.
>
> A "diplexor" is a passive device that lets you split
> and/or combine signals based on their frequencies.
> It does not matter whether the frequencies a
Sounds like a tall order.
You want <30MHz, 145, 430, 1300, 2400 or do you also need 50, 220 and 900?
On 09-Apr-11 14:28, Floyd Rodgers wrote:
> Since we are beating this horse.
> Does anyone have any pointers to units that allow more than three inputs
> or outputs or commercial higher power units?
Either term is equally correct.
The prefixes di and du both indicate TWO, so it multiplexes two signals. A
triplexer multiplexes three.
On 09-Apr-11 13:36, Gordon JC Pearce wrote:
> On Sat, 2011-04-09 at 12:22 +1000, Andrew Rich wrote:
>> Duplexor = tx rx more than one freq
>> Diplexor = rx onl
Send what to everyone?
On 23-Mar-11 08:31, Kevin Deane wrote:
>
>
> Sorry did not mean to send that to everyone...
>
> KF7MYK
> ___
> Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author.
> Not a
It's quite common.
On 13-Mar-11 00:25, Bill Dzurilla wrote:
> I was giving a presentation at our club meeting called Working DX on the
> Satellites and afterwards someone had a good question: is it at all possible
> that tropo, skip, or other form of enhanced propagation can enable a contact
>
http://gpredict.oz9aec.net/download.php#mac
On 08-Mar-11 07:41, PE0SAT wrote:
>
> Is there someone who has a compiled a dwg or an other binairy version for
> Mac OSX?
>
> 73 Jan PE0SAT
>
>
--
Nigel A. Gunn, 1865 El Camino Drive, Xenia, OH 45385-1115, USA. tel +1 937
825 5032
Amateur Radio G8
Alexandru has just made Gpredict 1.3 available free for all you Windows
operators at
https://sourceforge.net/projects/gpredict/files/Gpredict/1.3/
Of course, it's also available for Mac and Linux users.
--
Nigel A. Gunn, 1865 El Camino Drive, Xenia, OH 45385-1115, USA. tel +1 937
825 5032
There aren't any satellites on 6M.
There's always the "old fashioned" solution, an HF receiver, an HF transmitter
and a pair of converters or transverters.
They're still available for the microwave bands.
There must be older 2M and 70cM multimode rigs available used ( IC211E, TS700,
IC202/404 e
Look further down the page, the remote control software is a penny less than
ONE HUNDRED THOUSAND dollars.
On 25-Feb-11 18:06, Alexandru Csete wrote:
> On Fri, Feb 25, 2011 at 6:22 PM, Dave Webb KB1PVH wrote:
>
>> HRO has the Icom 9100 on it's site now for the low low price of $3799.95
>>
>> htt
It's currently descending, approaching the east coast of Australia.
On 19-Feb-11 18:55, Joe wrote:
> I found a web page that says it can track
>
> http://www.n2yo.com/?s=7530
>
> and i installed a new Orbitron, and gave it the latest set of keps it
> wanted to do.
>
> Thing is the two things do no
My preference is for big linear supplies but perhaps I'm just an old fogey that
prefers traditional design.
On 18-Feb-11 18:44, zach hillerson wrote:
> I purchased a Yaesu 847 for both satellite and HF work. Since this is my 1st
> base-style transceiver I am now in need of a power supply. I wa
Of course you can blame that on the op, the same as if the batteries in his
radio die or he doesn't pay his electricity
bill.
It's all part of preparing your station for the intended job.
You wouldn't phone your mate and ask him to complete your contact because your
radio failed. You'd fix it a
I don't think the issue is whether or not you use a recorder, packet/psk31/rtty
ops are not penalised because they have
a computer record of the contact by virtue of the technology used for that
mode. If a voice recorder is part of your
shack, that's fine.
The issue is having to ask others if
Was on 14.280. Don't remember the day and time.
On 30-Jan-11 01:59, Alan Sieg WB5RMG wrote:
>> Anyone want to join in on 7.190 for a satellite group rag chew 24:00 utc
>> WA4hfn Damon
>
> Seems that there used to be a weekly AMSAT net on 20m,
>or am I just showing my age... I haven't kept up u
Full Duplex means that you can both receive and transmit simultaneously.
Half Duplex means that you can both receive and transmit but only one at a time.
Simplex means that you can either receice or transmit but not both.
Frequency and bands are irrelevent to the definitions.
On 16-Dec-10 21:47, T
Plug in a speaker/mic. The Kenwood ones usually have an earphone socket that is
easy to change if necessary.
On 10-Dec-10 08:37, Jeff Yanko wrote:
>
> Let me explain. I have the TH-D7(A) and used a plug adaptor to go from the
> 1/10", 2.5mm, recepticle to 1/4" for the headphones. Everything wo
It surpprises me that, 4 days after launch, Space Track appears to not have
keps for the bird despite having given it
(and the other payload components) int.designators on Sunday. We usually get
keps first and designators/names some days
later.
--
Nigel A. Gunn, 1865 El Camino Drive, Xenia
Here are the object numbers but, so far, no keps.
37222 STPSAT 2 (USA 217) 2010-062A
37223 RAX (USA 218) 2010-062B
37224 O/OREOS (USA 219) 2010-062C
37225 FASTSAT-HSV01 (USA 220) 2010-062D
37226 FALCONSAT 5 (USA 221) 2010-062E
3
Launch has just been rescheduled for 012500Z
On 19-Nov-10 23:34, Nigel Gunn G8IFF/W8IFF wrote:
> Here's the video
> http://www.livestream.com/spaceflightnow
>
>
> On 19-Nov-10 23:19, Andy MacAllister wrote:
>> New HAMSATS could go up This Evening!
>>
>> Ch
Here's the video
http://www.livestream.com/spaceflightnow
On 19-Nov-10 23:19, 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
>
>
>
>
What is the projected launch time?
On 19-Nov-10 20:14, PA3GUO wrote:
> At least my family will find that a much more reasonable time
> as the actual moment of launch :-)
>
> I did not test the kepler set yet, but Bob mentioned ~same
>
> Henk
>
> g0...@aol.com schreef:
>>
>> Excellent Henk.
>
ts submitted to QRZ, wouldn't
> it be easy enough to add the BB to the
> recipient list when it goes out?
>
> Dave - KB1PVH
>
> Sent from my Verizon Wireless DROID
>
> On Nov 11, 2010 12:37 PM, "Nigel Gunn G8IFF/W8IFF" <mailto:ni...@ngunn.net>> wrote:
>
Have you tried the Amsat web site?
On 11-Nov-10 17:25, Dave Webb KB1PVH wrote:
>I hope I don't get lynched for asking this question, but here it goes. Why
> do I have to go to QRZ.COM to read the weekly AMSAT News Report? I know it
> used to be posted on the BB. Is there an issue with doing t
Looks as though the Eutelsat bird launched by ESA yesterday has been lost.
It has suffered a propellant leak and is stuck in it's transfer/parking orbit.
--
Nigel A. Gunn, 1865 El Camino Drive, Xenia, OH 45385-1115, USA. tel +1 937
825 5032
Amateur Radio G8IFF W8IFF (was KC8NHF 9H3GN), e-mai
But did you use keps from that time period? Today's keps won't work.
On 22-Sep-10 14:26, Zachary Beougher wrote:
> Frank,
>
> I simulated that time on Orbitron ( 06 January 2009, 20:20 UTC), and
> according to Orbitron, neither AO27 or VO52 were over your QTH at the time.
> I am sending you the sc
Remember that "less than a buck" crystals are mass produced, often to
relatively loose tolerances and poor temperature
stability, and is unlikely to match your oscillator configuration.
A properly cut crystal to your specification will probably cost you 30-40 bucks.
My choice of supplier is http
Problem there is that we will never agree on the list of satellites to support.
Here's my current list:
OSCAR 3
1 01293U 65016F 10241.71079289 -.0103 +0-0 -30765-4 0 08859
2 01293 070.0765 303.6137 0020103 301.7493 058.1662 14.04801695321392
OSCAR 5
1 04321U 70008B 10241.67576056 -.000
I wouldn't trust that website, it still recommends using Internet Explorer 5.5!
On 30-Aug-10 23:58, Gary "Joe" Mayfield wrote:
>
> There is something that can be done, and that information is available here:
>
> http://epubwatch.usps.gov
>
> The guys at my local post office clued me into "Pubwatc
Dunno but on SpaceTrack you need the NASA 3 line keps.
Here are the two you need.
OSCAR 23
1 19070U 88033A 10241.88541763 +.0056 +0-0 +1-3 0 08735
2 19070 090.2658 195.9583 0188372 220.8263 137.8631 13.27127631082025
OSCAR 25
1 19419U 88074A 10241.87525650 +.0066 +0-0 +100
The two in question are labelled as OSCAR 23 and OSCAR 25.
Others are labelled as NOVAs, yet others as TRANSITs.
On 30-Aug-10 22:49, Dave Marthouse wrote:
> With all this talk of the Transit satellites on 149.985MHZ, how are they
> listed in the keps. I checked for other satellites of interest o
It's there. You just don't know how to cut and pastebroken URLs.
On 29-Aug-10 18:05, John Neeley wrote:
> Not only you didnt assemble it, it has disappeared, heh nothing with that
> eBay number, Joe... Think that CR with 7836 is the culprit.not sure
> though.
>
> W6ZKH
>
>
>
>
>
>
>
Not for the majority who are not in the US.
On 28-Aug-10 01:04, Michael wrote:
> But ultimately doesn't all frequency allocation fall back on the F.C.C. I
> mean even with the Military ?
> Best wishes
>
>
>Mike
> ___
> Sent
Correct.
There will be legal problems in Europe as citizens (and amateurs) are not
allowed to listen on frequencies that are not
authorised in their countries.
On 27-Aug-10 23:28, George Henry wrote:
> Question: since there is no amateur radio allocation at 149.985, "we"
> (hams) would be aski
OK. The complete catalogue has 2 of each OSCAR 23 and OSCAR 25.
I need the ones with the 90dgf inclination.
On 25-Aug-10 22:11, Nigel Gunn G8IFF/W8IFF wrote:
> That's OSCAR 23 and OSCAR 25.
> Arn't they both Korean sats?
>
___
That's OSCAR 23 and OSCAR 25.
Arn't they both Korean sats?
On 25-Aug-10 21:54, Robert Bruninga wrote:
>> Which two Transit series satellites did you say it might be?
>> There seems a choice of several.
>
> The only two that are working I think. #23 and #25.
> They are object numbers. 19070 and 19
Which two Transit series satellites did you say it might be? There seems a
choice of several.
On 25-Aug-10 16:27, Robert Bruninga wrote:
> Possible new AMSAT Application?
>
> We may have access to two old TRANSIT navigation satellites
___
Sent via amsat
That doesn't work.
On 21-Aug-10 01:23, Rick Tejera wrote:
>
> Redownload the program from the website:
> http://www.satscape.info/modx/index.php?id=50 and it will point to the
> correct location. Your settings will be preserved.
>
___
Sent via amsat...
The old version never worked and the new Java version won't install.
Orbitron is still the best freebe out there or my "standard", InstantTrack.
On 20-Aug-10 20:43, Yanko Yankov wrote:
> Satscape never worked for me . I wasn't able to get the times right . It
> was running like a hour behind and I
Or look at yuor GPS.
On 14-Aug-10 22:49, Steve Meuse wrote:
> John Neeley expunged (w6...@att.net):
>
>> First Mike, you are in EN81gq, per QRZ.com, and second you dont need the
>> last 2
>
> I would avoid using QRZ.com *if you want your 6 digit grid locator*
>
> I discovered they use the geo
VANGUARD 1
1 5U 58002B 10214.89179569 +.0028 +0-0 +35487-4 0 06439
2 5 034.2536 171.7615 1846588 332.5583 018.8295 10.83957078813785
VANGUARD 2
1 00011U 59001A 10215.36215070 -.0015 0-0 -44733-5 0 254
2 00011 032.8630 248.1690 1482466 093.5401 283.5282 11.826139861890
That's around 45 feet, I believe the owner of the GPS network only claims half
that accuracy most of the time.
On 26-Jul-10 00:19, Glenn AA5PK wrote:
> Garmin claims 15 meters average accuracy on their Web site.
> http://www8.garmin.com/aboutGPS/
>
> Glenn AA5PK
__
Nobody guarentees your GPS to be accurate to within 30 feet and neither does
Google maps.
My GPS usually claims around 10-12 feet accuracy provided it can see around 10
satellites.
Leave your GPS on laying in your yard for a couple of hours plotting it's
course and see how far it wanders.
On 25
Don't worry about it.
The US doesn't comply with the IARU bandplans on any of the HF bands either.
On 17-Jul-10 21:14, James Duffey wrote:
and it does not conform to the IARU band plan
___
Sent via amsat...@amsat.org. Opinions expressed are those of th
James.
You're a few years out of date.
Joe Kasser has lived in Australia, Britain and Israel since he was a /W3.
QRZ currently puts him in Britain although he is actually in Singapore at the
National University.
On 17-Jul-10 14:29, James Duffey wrote:
>
>Give credit where credit is due, to thos
Perhaps that's because it doesn't really matter which sideband you use on the
linear sats although I believe it's
customary to Tx USB.
On 29-Jun-10 23:39, Dads wrote:
>
> Hi : I sent a couple friends that are interested to the AMSAT
> website.
> I told them to
You fill out whatever you told the guy on the other end of the QSO when you
gave him a signal report as part of the QSO.
Something like "your 5 and 9 old man. Please repeat your call and location!"
On 23-Jun-10 18:20, Yanko Yankov wrote:
>
> Greetings All
>
> I want to ask about the proper way t
There's probably less desence than using two antennas without diplexers/filters.
On 09-Jun-10 19:36, PA3GUO wrote:
> Hi John
> Let me try tomorrow and report back, I have never tested this.
> Henk, PA3GUO
>
>
> Has anyone on the list tried using a Kenwood TS2000 on full duplex satellite
> operatat
Look inside and see who manufactured the chip and go to their website for them.
On 02-Jun-10 15:59, Mark L. Hammond wrote:
> Hello,
>
> I've spent the last hour or two trying my best to find WindowsXP
> drivers for this USB to 4-port serial port converter box:
>
> Drivers needed Tripp-Lite U209-00
You probably need to go to the address at the end of every message, unsubscribe
from the list and subscribe under your
new address.
On 01-Jun-10 00:41, Josh Smith wrote:
> I recently moved and need to update my address with AMSAT. I can't find
> anywhere on the website to do this. Am I missin
I've still got an Oscarlocator marked for AO7, UO9 and MIR with the ground
circle based on eastern England.
On 27-May-10 19:11, Dave Guimont wrote:
> Someone is decoding Oscar 9 telemetry, and I accidentally deleted his
> message...
>
> If he is interested, I have a recording of the last Oscar 9
Where does one find this information?
On 27-May-10 11:44, Bill Jones wrote:
> I think the transponders on both sats are 36MHz wide, spaced every 40 MHz.
> AMC-11
> has vertical transponders at 3720, 3760,.4120,4160 and horizontal from
> 3740,3780,...4140,4180. There is about a 4 MHz gap b
I have No 18, dated July 1977.
On 21-May-10 10:22, Jim List wrote:
> Hi Folks,
>
>Oscar News has been published by AMSAT UK since the mid 1970's and we are
> attempting to find some of the early editions which are absent from the
> 'master archive'.
>
> The editions we are missing are number
Doesn't your prediction software have the option to put you clock right when it
starts?
Mine does.
On 08-May-10 20:48, Larry Gerhardstein wrote:
> My PC's clock keeps getting off by enough to cause problems on near
> overhead passes. I've seen it off by more than 30 seconds. It is using
> Inter
This from the Kenwood.co.jp site.
HF/50MHz All-Mode Transceiver - TS-590S (tentative naming)
Featuring a 32-bit floating-point DSP, the TS-590S will offer advanced receiver
performance and an extensive range of
features that make it ideal for beginner and seasoned DX’er alike. The radio’s
exc
True but we're talking the US equivalent of RAYNET providing emergency backup
communications.
On 06-May-10 20:50, Gordon JC Pearce wrote:
>
>
> If they are wanting "mission-critical" emergency comms, then they should
> be staying off the amateur bands and using the frequencies assigned to
> them
I don't think we're talking public service frequencies.
I think we're talking ARES/RACES/WARN backup on amateur bands.
On 06-May-10 20:29, Clint Bradford wrote:
> It is against FCC regulations in the United States to use amateur gear on
> frequencies allocated for public service.
>
>>> ... Do you
Do you also demand commercial quality radios?
Here, it's standard amateur transceivers, antennas and power supplies.
On 06-May-10 20:12, Clint Bradford wrote:
>>> ... homebrew equipment. Some can even be better than commercial!
>
> I would not live in a community where my public service departmen
Only because they have nobody on their staff who knows what an antenna is.
They don't pay high bucks for the fun of it.
I mean, does your local police department and city works comms centers have
home-made Yagis on their installations? Of
course not.
_
Keyspan's product development stratergy is not the issue.
The issue is that a fellow amateur needs the correct device drivers.
Device drivers are usually written by the chip manufacturer for USB interface
chips.
On 02-May-10 18:44, Clint Bradford wrote:
> You think contacting the chip manufactu
In any event, Keyspan didn't manufacture the USB interface chip.
The chip manufacturers website would be a better place to find the driver.
On 02-May-10 18:26, Clint Bradford wrote:
>>> ... as I can tell they DO NOT have a Windows 7 driver for the KeySpan ...
>
> Keyspan seemed optimistic when th
That's debatable.
Friedrichshafen might be just as big.
On 01-May-10 00:13, Mark Thompson wrote:
> Dayton Hamvention is the biggest gathering of ham radio operators on
> the planet
___
Sent via amsat...@amsat.org. Opinions expressed are those of the aut
Perhaps we should stick to the unambiguous exponential/scientific notation.
Today's date is 2.01E3:4E0:2.3E1
On 23-Apr-10 11:50, Andrew Glasbrenner wrote:
>
> If you really want to bang your head against the wall at how man can't agree
> on anything, take a look at the concept of long and short
I guess because it's impossible to build an isotropic radiator and therefore
just as impossible to measure it.
Why would I believe, or want to use, something I can neither have, use or
measure?
An isotropic antenna doesn't exist.
On 22-Apr-10 10:20, Stephen Melachrinos wrote:
> In fact, the am
Is it the original?
I had a mass produced plastic one (with a 50Hz motor) back in the early 1980's
(or earlier).
Unfortunately, your web site doesn't appear to give dates.
On 21-Apr-10 23:28, Idle-Tyme wrote:
>
> The Original Rolling Ball Clock
> Idle Tyme
> Idle-Tyme.com
> http://www.idle-tyme
And, as usual, your opinion is absolutely true.
Only needs to be to the precision that you can measure or the nearest
"preferred value".
On 21-Apr-10 22:57, Robert Bruninga wrote:
> People need to learn engineering significance. Just because a
> calculator spits out 9 digits of precision, using
Agreed.
The only thing, other than for times and dates, that I write between numbers is
a decimal point.
Commas and dots to split numbers into groups of three have no use.
OK, I might write 5 megawatts as 5E6 watts.
On 21-Apr-10 22:22, i8cvs wrote:
>
> Wath make confusion in the WF1F stateme
What was written was (243 million, 902 thousand, 443 units) million watts.
That's 243 Terawatts.
On 21-Apr-10 21:23, i8cvs wrote:
>
> I disagree with your numbars:
>
> 1 tera watt =1 TW = 1 x 10^12 watt or 1,000,000,000,000 watt
>
> 1 mega watt = 1MW = 1 x 10^6 watt or 1,000,000 watt or 1 million
Of course, this ia all rubbish as the stated power of 243TeraWatts (READ BELOW
CAREFULLY) is clearly not true.
That would require an antenna gain of, in the regeon of, 120dB.
On 21-Apr-10 17:49, i8cvs wrote:
>
> The only official data given for Arecibo by WF1F are the following :
>
>> The 1,000
The anomoly you see is because the 60dB gain given is dBi and the "real" gain
used to calculate the power is dBd (gain
referenced to a dipole and not isotropic). The difference is around 2.4dB.
On 21-Apr-10 11:46, Fabio Azzarello wrote:
> Hello,
> thanks for the reply, but now I have another que
Only 4 lines of sig. The 2 dashes are the delimiter put in by the e-mail client.
Could be worse. I could put the sig at the top!
Also bugs me when people dont crop the recipient list.
On 14-Apr-10 04:39, Steve Meuse wrote:
> Nigel Gunn G8IFF/W8IFF expunged (ni...@ngunn.net):
>
>> To
Top posting is the better option.
On 13-Apr-10 06:50, Gordon JC Pearce wrote:
>
> What ever happened to not top-posting, and changing the Subject: header
> when the topic changes? ;-)
--
Nigel A. Gunn, 1865 El Camino Drive, Xenia, OH 45385-1115, USA. tel +1 937
825 5032
Amateur Radio G8IFF
QRZ says kb8...@miaprs.net
On 07-Apr-10 18:49, Michael Wolthuis wrote:
> Chris (KC0YBM),
>
> If you read the BB please contact me at �kb8zgl at kb8zgl.net� as your email
> is not listed on your QRZ page and I haven�t found it through any other ham
> websites or searches on Google.
>
__
They are quite popular but I doubt they do anything "very well".
On 27-Mar-10 13:04, Gary "Joe" Mayfield wrote:
> Has anyone bought and played with one of these ultra cheap WOUXUN dual band
> hand helds that are selling on eBay? Do they hear well enough for satellite
> operation?
>
> 73,
> Joe kk
Garmin handheld units give grid squares and indicate directions.
If you want one that talks, possibly not.
On 25-Mar-10 17:07, Bob- W7LRD wrote:
>
>
>
>
> Hello
>
> Is there a GPS device that has the capability of
>
> 1. giving directions
>
> 2. showing lat/long or even grid squares
>
> 73 Bob W7L
I beleive fractal antennas have been "ignored" because of patent issues.
On 13-Mar-10 22:26, Dave Marthouse wrote:
> This seems almost too good to be true. Keep in mind that I'm
> not an engineer. Maybe this technology could be used for future amateur
> satellites, wider bandwidth
About 15 degrees elevation is usually considered optimum.
On 12-Mar-10 01:32, Jacob Tennant wrote:
and the booms angled 30 to 40 degrees
> front end up
--
Nigel A. Gunn, 1865 El Camino Drive, Xenia, OH 45385-1115, USA. tel +1 937
825 5032
Amateur Radio G8IFF W8IFF (was KC8NHF), e-mail ni..
It's predominantly sold to the commercial/government market.
On 01-Mar-10 21:04, Steve Meuse wrote:
>
> I generally agree with these questions, but how do you explain the Icom
> IC-7800? That's a $10,000 rig!
>
___
Sent via amsat...@amsat.org. Opinions
The biggest problem for most people transporting radios is that they spend
their life talking about it and not doing it.
On 28-Feb-10 05:44, Reid Crowe wrote:
> Has anyone had luck with transporting an HT on a commercial flight in
> their carry on luggage recently? I doubt I'd have much luck wit
You saying that if I lived on another planet or in another star system then my
satellites wouldn't have keps and I
couldn't use my software to track them?
That sounds rediculous.
On 27-Feb-10 09:43, Jeff Yanko wrote:
>
> Since the planets revolve around the Sun ,and not the Earth, there can't
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