Re: [Repeater-Builder] Snide Remarks redux (was 12-Step Program for Carrier Squelch Addiction (was: snide remarks))

2004-12-03 Thread grizzarv

 From: Nate Duehr [EMAIL PROTECTED]
 Date: Fri, 3 Dec 2004 00:59:37 -0700
 Subject: [Repeater-Builder] 12-Step Program for Carrier Squelch Addiction 
 (was: snide remarks)
 
 On Dec 2, 2004, at 9:05 PM, Tony King - W4ZT wrote:
 
  Unfortunately, Nate apparently missed the entire point...
 
 No I didn't.

Sure you did.  It sailed right over your head; that's what that whoosh
you heard was.  Is your hair any shorter on top?

 Drop the insults

That's what he's trying to persuade all the list members to do.  *That*
is the point that you missed, Mr. Duehr.

de kg7yy





 
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Re: [Repeater-Builder] snide remarks

2004-12-03 Thread grizzarv

 From: JOHN MACKEY [EMAIL PROTECTED]
 Date: Fri, 03 Dec 2004 00:46:28 -0600
 Subject: Re: [Repeater-Builder] snide remarks
 
 Coordination has become a joke in certain areas, because the coordination
 representatives are not professional or following decent rules of conduct.

[snip]

Gee.  Tony's intent and meaning sailed right over the top of your head,
didn't it?  Are you normally this oblivious, or is this a special case?

Am I justified in calling your powers of observation into question?

If I am, is a public forum the proper place to do so?

Let's return to the events that led to Mr. King's ire, shall we?

A new repeater builder asked how to invert the sense of a squelch
signal, and one of the august (yes, august is properly capitalized.
Look it up) members of this mailing list jumped on him with all four
feet.  Yes, I just did imply that the jumper is an animal; allow me to
make it explicit by calling him a jackass.  For the wasted bandwidth, he
could have answered the question two or three ways; instead, he chose to
assuage his own feelings of inferiority by lording it over someone he
saw as lower on the totem pole.  Was that justified?

Another member of this list attempted to dissuade a would-be repeater
ownder from erecting another 10 meter repeater.  In the course of that
discussion, someone mentioned coordination -- and another august member
of this list loosed a highly unprofessional broadside at someone that
was not present to defend himself.  You yourself have continued to beat
the place in the road where there used to be a greasy spot where a dead
horse used to lay, hijacking Mr. King's thread in order to do so.  What
is your justification in doing so?

Now allow me to add one of my own.

A new member posted in HTML.  After a request that he quit doing so, he
did.  He left Micro$oft's damnedable smart quotes enabled, though, and
thoroughly scrambled the presentation in my xterm window on my Linux
computer.  When I asked him to turn them off, yet another august member
of this list set up a straw man and thoroughly demolished it, implying
as he did so that I was less than capable if I could not parse meaning
from within HTML coding.  I didn't think he needed to be set straight in
public, so I sent him a private E-mail informing him that his bogus
argument was, in point of fact, bogus.  See, Micro$lop used control
characters for their damnedable smart quotes, and terminals -- such as
xterm, the X Terminal -- use control characters to, well, control the
behavior of the terminal.  They ring the bell, or turn off scroll, or
reposition the cursor, or clear the viewing window, or any number of
other things.  That's why they're called control characters and why
the key used to create them is called the control key.  Apparently,
instead of correcting him in private I should have exposed his ignorance
in public and held him to account for it.  Mea culpa.  I have corrected
my error here.

Mr. Mackey, do you care to address even *one* of these three examples 
of what Mr. King is inveighing against, or do you merely wish to continue
to beat the spot where a dead horse used to lie?  Your call, sir.

de kg7yy





 
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Re: [Repeater-Builder] IC 2720

2004-11-26 Thread grizzarv

 From: Mr. Edgar McKinney [EMAIL PROTECTED]
 Date: Fri, 26 Nov 2004 07:41:28 -0500
 Subject: Re: [Repeater-Builder] IC 2720

True.  You still have to deal with the problem of the radio not being
certified under Part 90 for your church usage and not being NTIA
compliant.

 Not hard cause the part 90 does not apply to inter gov usage.
 
 Ed - kb8qeu
 
 [EMAIL PROTECTED] wrote:
 
   From: Mr. Edgar McKinney [EMAIL PROTECTED]
   Date: Thu, 25 Nov 2004 11:45:04 -0500
   Subject: Re: [Repeater-Builder] IC 2720
  
   I now have 3 2720s and yes they are ham rigs. Also, They are tuned for 
   local comercial freq that we do church ops on as well commercial freq for 
   Severe Weather Research.
  
 
  How did you manage to get them type accepted for transmission on Part 90
  bands?
 
  de kg7yy
 
 
  Yahoo! Groups Links
 
 
 
 
 
 
 
 
 
  
 Yahoo! Groups Links
 
 
 
  
 
 
 





 
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Re: [Repeater-Builder] IC 2720

2004-11-25 Thread grizzarv

 From: Mr. Edgar McKinney [EMAIL PROTECTED]
 Date: Thu, 25 Nov 2004 11:45:04 -0500
 Subject: Re: [Repeater-Builder] IC 2720
 
 I now have 3 2720s and yes they are ham rigs. Also, They are tuned for local 
 comercial freq that we do church ops on as well commercial freq for Severe 
 Weather Research.
 

How did you manage to get them type accepted for transmission on Part 90
bands?

de kg7yy




 
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[Repeater-Builder] Re: radial tire static?

2004-11-18 Thread grizzarv

 From: na6df [EMAIL PROTECTED]
 Date: Wed, 17 Nov 2004 21:11:58 -
 Subject: [Repeater-Builder] radial tire static?
 
 Not repeater related so much, but I thought the great minds here 
 might know...
 
 One of my corporate bosses, a ham, is having his bridgestone tires 
 generate static while they are rolling, interfering with AM radio 
 reception. I know somebody used to sell a powder to put in the tires 
 that dissapated the static, but can't find any info on it now. It 
 has to do with some problem with low rolling resistance tires that 
 have low carbon content..
 
 Any ideas? thanks!

The one I remember hearing about was a graphite powder that would make
the carcass more conductive.  In use, a quantity was injected in the
tire before it was inflated.  NB:  This material may be limited to
tube tires at present.

The wheel bearing grease also caused some problems by insulating the
tires from the frame, so the bearing assembly would have a spring that
bore on the bearing cap and on the spindle to keep them at the same
potential.

HTH





 
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Re: [Repeater-Builder] GROL - benefit?

2004-10-22 Thread grizzarv

 From: russ [EMAIL PROTECTED]
 Date: Thu, 21 Oct 2004 11:01:57 -0400
 Subject: Re: [Repeater-Builder] GROL - benefit?

I wish it had been that simple.

I was 19, with a second class commercial radiotelephone license so new
the ink wasn't dry yet (and since the FCC ran them off en masse on a
line printer that is saying something).  I interviewed for a job based
on the license, and the gentleman I was talking to said, You have a
second 'phone?  I do too -- had to take the test three times [I think;
this was a while ago] before I passed it.  How many times did you test
before you passed?  Being honest, I said, Only once.  Well, he
straightened right up in his chair, went from friendly and curious to
polite, and said, I do have some other candidates for the position, but
I will definitely keep you in mind.  Thank you for coming to see me
today.

I sorta' had the sinking feeling that he wasn't going to offer me a job,
and so far he hasn't.  I think it was that only that torpedoed my
chances.

de kg7yy

 To but it simple. It will get you in the door. Then it is up to you.
 73 Russ,




 
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Re: [Repeater-Builder] Re: Happy radio day! - Happy 10-4 Day ...

2004-10-09 Thread grizzarv

 From: Wade Lake [EMAIL PROTECTED]
 Date: Sat, 9 Oct 2004 12:05:27 -0600
 Subject: Re: [Repeater-Builder] Re: Happy radio day! - Happy 10-4 Day ...
 
 10-9?   10-9 anyone?
 
I'm sorry; I didn't catch that.  Could you repeat it, please?

 I guess today is happy 10-9 day then

  ;-)





 
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Re: [Repeater-Builder] Re Circulator

2004-10-08 Thread grizzarv

 From: Eric Lemmon [EMAIL PROTECTED]
 Date: Thu, 07 Oct 2004 18:49:13 -0700
 Subject: Re: [Repeater-Builder] Re Circulator
 
 Andy,
 
 My understanding of British radio terminology is not complete, so I am a
 little confused by your statement about the receive port of the
 circulator.
 
 In circulator (isolator) applications I am familiar with, the input of
 the circulator connects directly to the transmitter output, the output
 of the circulator connects to the TX input cavity of the duplexer, and a
 50 ohm load is connected to the side connector.

I learned that was an isolator.

The product I work on in my dayside job has a four-port circulator.  The
transmitter is connected to port one, which passes any signal
clockwise (for the sake of argument) to port two.  The antenna is
connected to port two, the receiver to port three, and a load to port
four.  Since all signals are passing clockwise, from port one to two,
port two to three, port three to four, and port four to one, the load on
port four is not visible to the transmitter.  The receiver on port three is 
not visible to the transmitter, assuming the antenna absorbs all the RF.  
And any signals that the bandpass filter in the front end of the receiver 
rejects do not go back out the antenna, as they would have to go 
counterclockwise to get there.  Ditto received signals and the transmitter; 
the circulator won't allow them to go that way.

The same product also has an isolator in it at an earlier stage.  What
goes in port one comes out port two; what comes in port two is turned
into heat in the load on port three.  The energy coming in port two
can't go to port one because it's being steered clockwise by the
isolator.

Circulators are very common in microwave applications as they allow the
use of a single waveguide for both transmit and receive, minimizing the
problems inherent in running what is essentially a rectangular pipe from
the radio to the antenna and the problems of evenly illuminating a
reflector with two different feedhorns.  I have casually wondered upon
occasion if a four-port circulator in a repeater would confer any benefit,
possibly increasing isolation and allowing the use of smaller, hopefully 
less costly duplexers.

de kg7yy

[snip]





 
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[Repeater-Builder] Re: Weather Radios

2004-06-08 Thread grizzarv
 From: Mike WA6ILQ [EMAIL PROTECTED]
 Subject: Re: [Repeater-Builder] Re: Weather Radios

[...]

 FWIW, the SAME code definitions are in the referenced PDF.  The
 encoderis even somethng that might be worth writing as a sound
 card utility, provided the sound card has the requisite transient response
 and stability.
 
 I'd like to see that as a embedded processor function on a repeater controller
 add-on card - in the same sense as the RLC-MOT is a add-on card.
 Picture the ability to take a old 160mhz receiver strip - let's say from a
 Motrac - something that would normally be considered as a doorstop.
 Buy a cheap crystal from somewhere on the local weather channel.
 Add this board - call it the Simple-SAME decoder between the audio
 output and the repeater controller input.  You instantly have a high
 performance SAME receiver for the cost of the Simple-SAME and a
 crystal.

I admit I wasn't thinking that far into it -- I was hung up on the
notion of generating SAME codes for the purpose of testing decoders.

That would be a slick little gadget.  Since the SAME codes include EOM
that would allow the repeater to go back to normal operations when the
message ended.  I see a need to control warnings coming from the
decoder independently, though; after the horn has blown for a tornado
warning one's users probably wouldn't be any too interested in a severe
T'storm watch.  Possibly something like the decoder outputs as one input
to an AND gate with the other being a latch, then all 31 AND gates
feeding into a single OR gate.

[snip]

de kg7yy





 
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Re: [Repeater-Builder] Re: Weather Radios

2004-06-07 Thread grizzarv
 From: hwingate [EMAIL PROTECTED]
 Subject: [Repeater-Builder] Re: Weather Radios
 
 The 1050 hz tone is the original arert tone that was used
 before the SAME system was installed. It is still transmitted
 with a duration of 8-10 seconds,is not area specific and will
 give a warning for the whole coverage area of the station, sometimes
 as much as 5000 square miles.
 Generating a SAME tone is not for the faint of heart. It is 
 digital and has such oddball parameters as 520.83 bps data rate,
 a digital 1 = 2083.3 hz , a digital 0 = 1562.5 hz. For more 
 than you ever wanted to know about SAME go here:
 http://www.nws.noaa.gov/nwr/same.pdf
 
 Henry, K4HAL

Henry, I don't think it would be all that hard to build a FSK audio
oscillator to work with a 1.92 mS wide mark and space tone (which is
what 520.83 bps translates to) at those frequencies.  The
phase continuity requirement may be a little tricky. though.

FWIW, the SAME code definitions are in the referenced PDF.  The encoder
is even somethng that might be worth writing as a sound card utility,
provided the sound card has the requisite transient response and
stability.

Guess I need to dig up the sound libraries and read the furnished manual
on them.

de kg7yy






 
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