RE: [Repeater-Builder] Re: DC Ground Lightning Protection / Concrete Electrode

[Barry]

Normally when grounding electrical and stakes  we drive the rrod , connect the 
ground strap having sanded the connection and clamp securely then spray with a 
special metalic paint , been doing this a long time with good success. 


> To: Repeater-Builder@yahoogroups.com
> From: gascha...@comcast.net
> Date: Tue, 30 Jun 2009 23:23:43 -0500
> Subject: RE: [Repeater-Builder] Re: DC Ground Lightning Protection / Concrete 
> Electrode
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> Actually galvanized and copper plated
> ground rods should not be mixed in any ground system. Electrolysis will 
> deplete
> the plating. All ground rods in any ground system are electrically connected 
> to
> one another.
>
>
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> 73
>
>
>
> Gary k4FMX
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> From: Repeater-Builder@yahoogroups.com 
> [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Glenn Little WB4UIV
>
> Sent: Tuesday, June 30, 2009 7:53
> PM
>
> To: Repeater-Builder@yahoogroups.com
>
> Subject: Re: [Repeater-Builder]
> Re: DC Ground Lightning Protection / Concrete Electrode
>
>
>
>
>
>
>
>
>
>
>
>
> Another way to pass a ground cable through
> concrete is via a PVC pipe. The last thing that you want to do is run a ground
> cable that can carry lightning fault current through concrete without 
> isolating
> the cable from the concrete.
>
> The fault current will rapidly heat the ground cable, causing it to expand, at
> the same time vaporizing the water trapped in the concrete. The result is a
> violent steam explosion. The results could be the total fragmentation of the
> concrete.
>
>
>
> MIL HDBK 419 is available for download. This is a military manual that
> addresses grounding.
>
> Another very respected guide is Motorola R-56.
>
>
>
> Galvanized ground rods should only be used at the guy anchor points.
>
> Copper plated ground rods should be used around the tower base and the 
> building
> with all bonded together by exothermic welds 18 inches below grade.
>
> Ground rods are to be placed no closer than twice the length of the rod.
>
> Any closer and you are wasting your funds.
>
>
>
> YMMV.
>
>
>
> 73
>
> Glenn
>
> WB4UIV
>
>
>
> At 10:07 AM 6/30/2009, you wrote:
>
>
>
>
>
>
>
>
>
>
>
>
> I'm going to disagree with the
> following posting:
>
>
>
> If the tower is bolted to galvanized pipe that is embedded in concrete of
>
> which a significant amount is in contact with soil, you have a
>
> "concrete-encased grounding electrode" which is hard to improve upon.
> It is
>
> not likely that a ground rod would be worthwhile, since damp concrete
>
> (concrete in intimate contact with soil at grade level) is a fairly good
>
> conductor, and such a footing or foundation has hundreds of times the
>
> surface area of a ground rod.
>
>
>
> I have
> read Ericsson specs for cellular tower installation in that disagrees with the
> previous statement.
>
>
>
> Standard
> concrete without conductive enhancing materials can crack, pop or crumble if
> subjected to a direct lightning strike if ground rods are not properly
> installed. The water contained within the concrete will vaporize
> instantly causing the concrete to fail.
>
>
>
> There
> are types of conductive concrete mixes or additives that can be used, but the
> most common practice is to use a ground rod from each leg with a copper wire
> bonded to each tower leg.
>
>
>
> Our
> mfg building at work is made from steel I-Beams into concrete. I have
> noticed each I-Beam has its own ground connection. The strap is bolted to
> the beam about 1" above the concrete, then disappears into the concrete,
> and suspect there is a ground rod going into the soil beneath the concrete
> piling, but thats just a theory, as I dident see it before the mud was
> poured.
>
>
>
> Ed
> N3SDO
>
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>

_
Get the latest news, goss and sport Make ninemsn your homepage!
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RE: [Repeater-Builder] Re: DC Ground Lightning Protection / Concrete Electrode

[Gary Schafer]

Actually galvanized and copper plated ground rods should not be mixed in any
ground system. Electrolysis will deplete the plating. All ground rods in any
ground system are electrically connected to one another.

 

73

Gary k4FMX

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Glenn Little WB4UIV
Sent: Tuesday, June 30, 2009 7:53 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: DC Ground Lightning Protection /
Concrete Electrode

 



Another way to pass a ground cable through concrete is via a PVC pipe. The
last thing that you want to do is run a ground cable that can carry
lightning fault current through concrete without isolating the cable from
the concrete.
The fault current will rapidly heat the ground cable, causing it to expand,
at the same time vaporizing the water trapped in the concrete. The result is
a violent steam explosion. The results could be the total fragmentation of
the concrete.

MIL HDBK 419 is available for download. This is a military manual that
addresses grounding.
Another very respected guide is Motorola R-56.

Galvanized ground rods should only be used at the guy anchor points.
Copper plated ground rods should be used around the tower base and the
building with all bonded together by exothermic welds 18 inches below grade.
Ground rods are to be placed no closer than twice the length of the rod.
Any closer and you are wasting your funds.

YMMV.

73
Glenn
WB4UIV

At 10:07 AM 6/30/2009, you wrote:






I'm going to disagree with the following posting: 

If the tower is bolted to galvanized pipe that is embedded in concrete of
which a significant amount is in contact with soil, you have a
"concrete-encased grounding electrode" which is hard to improve upon. It is
not likely that a ground rod would be worthwhile, since damp concrete
(concrete in intimate contact with soil at grade level) is a fairly good
conductor, and such a footing or foundation has hundreds of times the
surface area of a ground rod. 

I have read Ericsson specs for cellular tower installation in that disagrees
with the previous statement. 

Standard concrete without conductive enhancing materials can crack, pop or
crumble if subjected to a direct lightning strike if ground rods are not
properly installed.   The water contained within the concrete will vaporize
instantly causing the concrete to fail.

There are types of conductive concrete mixes or additives that can be used,
but the most common practice is to use a ground rod from each leg with a
copper wire bonded to each tower leg.

Our mfg building at work is made from steel I-Beams into concrete.  I have
noticed each I-Beam has its own ground connection.  The strap is bolted to
the beam about 1" above the concrete, then disappears into the concrete, and
suspect there is a ground rod going into the soil beneath the concrete
piling, but thats just a theory, as I dident see it before the mud was
poured.

Ed N3SDO 

Re: [possible spam] [Repeater-Builder] Re: DB-224 Phasing Harness

[NORM KNAPP]

No, not, not really. I was going on what I had seen in a Tessco book or 
online... I do not remember at the moment. If I run accross this info on a 
brochure I would be glad to pass it along.
73 de N5NPO

- Original Message -
From: Repeater-Builder@yahoogroups.com 
To: Repeater-Builder@yahoogroups.com 
Sent: Tue Jun 30 20:14:33 2009
Subject: [possible spam]  [Repeater-Builder] Re: DB-224 Phasing Harness



Hi Norm,

I was basing that answer on what I see in the data sheet for
the DB-224 that I have.

It says "This series of antennas include the DB-224 (6.0db gain, circular, 
DB224E 9.0 db gain, off-center pattern), DB-224S (split antenna with 3.0 db and 
3.0db, circular pattern) and DB-224ES (split antenna with 6.0 db and 6.0db 
off-center pattern)"

Since I don't see any references to other frequencies other than a reference to 
the antenna being available in 4 ranges, it's possible that db products decided 
to make it easier to specify a frequency band. That would make sense!

You have a newer data sheet that you could attach as a .pdf?

Thanks,

Tim W5FN

--- In Repeater-Builder@yahoogroups.com 
 , "NORM KNAPP"  wrote:
>
> Actally, a DB-224E is a 138-150mhz antenna and is omni. The one you are 
> refering to is actually a DB-224AE. It is an "A" band, 150-160mhz with all 
> elements on one side for the eliptical pattern, thus the E in that case.
> 73 de N5NPO
> 
> - Original Message -
> From: Repeater-Builder@yahoogroups.com 
>   
> mailto:Repeater-Builder%40yahoogroups.com> 
> >
> To: Repeater-Builder@yahoogroups.com 
>   
> mailto:Repeater-Builder%40yahoogroups.com> 
> >
> Sent: Tue Jun 30 18:28:47 2009
> Subject: [possible spam] [Repeater-Builder] Re: DB-224 Phasing Harness
> 
> 
> 
> Hi Norm,
> 
> The DB-224E is just a 224 that has all of the elements lined
> up in the same direction. Guess they had to make a separate
> antenna for those folks who didn't want to loosen the elements
> and rotate them! :-)
> 
> It took about 4 months to get the harness, so not surprised they
> don't want to do it. They said they had to wait till they had
> a run of antennas to make before they'd do the harness.
> 
> I honestly don't remember how much the harness was. sorry
> 
> Tim
> 
> --- In Repeater-Builder@yahoogroups.com 
>   
>  , "NORM KNAPP"  wrote:
> >
> > Interesting. Is this a harness for a DB-224E? I was told a couple years ago 
> > that Andrew wouldn't sell a harness anymore. 'Bout how much was the harness?
> > 73 de N5NPO
> > 
> > - Original Message -
> > From: Repeater-Builder@yahoogroups.com 
> >   
> >  
> >  >   
> >  >
> > To: Repeater-Builder@yahoogroups.com 
> >   
> >  
> >  >   
> >  >
> > Sent: Tue Jun 30 17:01:29 2009
> > Subject: [Repeater-Builder] Re: DB-224 Phasing Harness
> > 
> > 
> > 
> > Hi NPO,
> > 
> > It's a replacement harness - the other one had problems, so
> > we just ordered a new one.
> > 
> > Haven't looked at it on analyzer - was gonna do that when I
> > got it installed.
> > 
> > I'll keep you posted.
> > 
> > Tim
> > 
> > --- In Repeater-Builder@yahoogroups.com 
> >   
> >  
> >  , "NORM KNAPP"  wrote:
> > >
> > > When you find out what is going on with that, let me know. I have 
> > > installed one or two of them with that blank stub myself. Is this for a 
> > > DB-224A or DB-224E or what? Is this a replacement harness? Have you swept 
> > > it with a sitemaster or an antenna analyzer?
> > > 73 de N5NPO
> > > 
> > > - Original Message -
> > > From: Repeater-Builder@yahoogroups.com 
> > >   
> > >  
> > >  
> > >  > >   
> > >  
> > >  >
> > > To: Repeater-Builder@yahoogroups.com 
> > >   
> > >  
> > >  
> > >  > >   
> > >  
> > >  >
> > > Sent: Tue Jun 30 16:33:25 2009
> > > Subject: [Repeater-Builder] DB-224 Phasing Harness
> > > 
> > > 
> > > 
> > > Here we 

[Repeater-Builder] Re: DC Ground Lightning Protection / Concrete Electrode

[Wes Bunker]

Please take note that there is a difference between grounding an electrical
system, and grounding for lightning. The two situations are quite different.
For designing and installing a lightning protection system see NFPA 780-250.
The NEC (NFPA 70) does not address lighting protection other than when it is
installed beside an electrical system ground. 

I am a certified electrical inspector (ICC) and electrical contractor (NM &
CA). In the southwest lightning protection is a BIG thing!

 

Wes

ARRL Technical Specialist

AE6ZM & VE7ELE

Lincoln, CA

CM98iv

Placer County ARES

 

[Repeater-Builder] Re: GM300 Crossband Ham repeater Bi-Directional

[Steve]

--- In Repeater-Builder@yahoogroups.com, "turboelesjuan"  
> Heres my question:  Is there a controller I can build which has the ability 
> to control TWO Motorola GM300 mobiles w/16pin connectors the same way?  Use 
> each radio as a transceiver for bi-directional traffic?  I already have both 
> of the GM300 radios and they didn't cost 400$, which my 8800 Did.  I want 
> something perm. installed at my house so I can use a small UHF handheld on 
> low power anywhere around my area to chat.
> 
> Is this possible?
> 
> Thanks!!
> -Scott
>

Yes it consists mainly of two 2N3906 transistors.

http://www.batlabs.com/maxrpt.html

[possible spam] [Repeater-Builder] Re: DB-224 Phasing Harness

[tahrens301]

Hi Norm,

I was basing that answer on what I see in the data sheet for
the DB-224 that I have.

It says "This series of antennas include the DB-224 (6.0db gain, circular, 
DB224E 9.0 db gain, off-center pattern), DB-224S (split antenna with 3.0 db and 
3.0db, circular pattern) and DB-224ES (split antenna with 6.0 db and 6.0db 
off-center pattern)"

Since I don't see any references to other frequencies other than a reference to 
the antenna being available in 4 ranges, it's possible that db products decided 
to make it easier to specify a frequency band.  That would make sense!

You have a newer data sheet that you could attach as a .pdf?

Thanks,

Tim  W5FN

--- In Repeater-Builder@yahoogroups.com, "NORM KNAPP"  wrote:
>
> Actally, a DB-224E is a 138-150mhz antenna and is omni. The one you are 
> refering to is actually a DB-224AE. It is an "A" band, 150-160mhz with all 
> elements on one side for the eliptical pattern, thus the E in that case.
> 73 de N5NPO
> 
> - Original Message -
> From: Repeater-Builder@yahoogroups.com 
> To: Repeater-Builder@yahoogroups.com 
> Sent: Tue Jun 30 18:28:47 2009
> Subject: [possible spam]  [Repeater-Builder] Re: DB-224 Phasing Harness
> 
> 
> 
> Hi Norm,
> 
> The DB-224E is just a 224 that has all of the elements lined
> up in the same direction. Guess they had to make a separate
> antenna for those folks who didn't want to loosen the elements
> and rotate them! :-)
> 
> It took about 4 months to get the harness, so not surprised they
> don't want to do it. They said they had to wait till they had
> a run of antennas to make before they'd do the harness.
> 
> I honestly don't remember how much the harness was. sorry
> 
> Tim
> 
> --- In Repeater-Builder@yahoogroups.com 
>  , "NORM KNAPP"  wrote:
> >
> > Interesting. Is this a harness for a DB-224E? I was told a couple years ago 
> > that Andrew wouldn't sell a harness anymore. 'Bout how much was the harness?
> > 73 de N5NPO
> > 
> > - Original Message -
> > From: Repeater-Builder@yahoogroups.com 
> >   
> >  >  >
> > To: Repeater-Builder@yahoogroups.com 
> >   
> >  >  >
> > Sent: Tue Jun 30 17:01:29 2009
> > Subject: [Repeater-Builder] Re: DB-224 Phasing Harness
> > 
> > 
> > 
> > Hi NPO,
> > 
> > It's a replacement harness - the other one had problems, so
> > we just ordered a new one.
> > 
> > Haven't looked at it on analyzer - was gonna do that when I
> > got it installed.
> > 
> > I'll keep you posted.
> > 
> > Tim
> > 
> > --- In Repeater-Builder@yahoogroups.com 
> >   
> >  , "NORM KNAPP"  wrote:
> > >
> > > When you find out what is going on with that, let me know. I have 
> > > installed one or two of them with that blank stub myself. Is this for a 
> > > DB-224A or DB-224E or what? Is this a replacement harness? Have you swept 
> > > it with a sitemaster or an antenna analyzer?
> > > 73 de N5NPO
> > > 
> > > - Original Message -
> > > From: Repeater-Builder@yahoogroups.com 
> > >   
> > >  
> > >  > >   
> > >  >
> > > To: Repeater-Builder@yahoogroups.com 
> > >   
> > >  
> > >  > >   
> > >  >
> > > Sent: Tue Jun 30 16:33:25 2009
> > > Subject: [Repeater-Builder] DB-224 Phasing Harness
> > > 
> > > 
> > > 
> > > Here we go again!
> > > 
> > > Got a new harness about a year ago, & now that I'm fixing
> > > to put the antenna up, it's time to put it on.
> > > 
> > > Top section was fine (had to re-locate the ground lugs, as
> > > the actual antenna is kinda old).
> > > 
> > > Anyway, started on the bottom section & noticed that there
> > > was a length of coax coming out of one of the 'Y's that
> > > had no connector & was not sealed.
> > > 
> > > Both ends with N connectors (to top & to station) are attached,
> > > it's just this appendage that has no covering that bothers
> > > me!
> > > 
> > > I've called Andrew on the antenna, but they haven't called
> > > me back yet, so figured I'd ask the real experts what this
> > > thing is. Obviously, if it's supposed to be there, I'll
> > > seal it up.
> > > 
> > > Thanks,
> > > 
> > > Tim W5FN
> > >
> >
>

Re: [possible spam] [Repeater-Builder] Re: DB-224 Phasing Harness

[NORM KNAPP]

Actally, a DB-224E is a 138-150mhz antenna and is omni. The one you are 
refering to is actually a DB-224AE. It is an "A" band, 150-160mhz with all 
elements on one side for the eliptical pattern, thus the E in that case.
73 de N5NPO

- Original Message -
From: Repeater-Builder@yahoogroups.com 
To: Repeater-Builder@yahoogroups.com 
Sent: Tue Jun 30 18:28:47 2009
Subject: [possible spam]  [Repeater-Builder] Re: DB-224 Phasing Harness



Hi Norm,

The DB-224E is just a 224 that has all of the elements lined
up in the same direction. Guess they had to make a separate
antenna for those folks who didn't want to loosen the elements
and rotate them! :-)

It took about 4 months to get the harness, so not surprised they
don't want to do it. They said they had to wait till they had
a run of antennas to make before they'd do the harness.

I honestly don't remember how much the harness was. sorry

Tim

--- In Repeater-Builder@yahoogroups.com 
 , "NORM KNAPP"  wrote:
>
> Interesting. Is this a harness for a DB-224E? I was told a couple years ago 
> that Andrew wouldn't sell a harness anymore. 'Bout how much was the harness?
> 73 de N5NPO
> 
> - Original Message -
> From: Repeater-Builder@yahoogroups.com 
>   
> mailto:Repeater-Builder%40yahoogroups.com> 
> >
> To: Repeater-Builder@yahoogroups.com 
>   
> mailto:Repeater-Builder%40yahoogroups.com> 
> >
> Sent: Tue Jun 30 17:01:29 2009
> Subject: [Repeater-Builder] Re: DB-224 Phasing Harness
> 
> 
> 
> Hi NPO,
> 
> It's a replacement harness - the other one had problems, so
> we just ordered a new one.
> 
> Haven't looked at it on analyzer - was gonna do that when I
> got it installed.
> 
> I'll keep you posted.
> 
> Tim
> 
> --- In Repeater-Builder@yahoogroups.com 
>   
>  , "NORM KNAPP"  wrote:
> >
> > When you find out what is going on with that, let me know. I have installed 
> > one or two of them with that blank stub myself. Is this for a DB-224A or 
> > DB-224E or what? Is this a replacement harness? Have you swept it with a 
> > sitemaster or an antenna analyzer?
> > 73 de N5NPO
> > 
> > - Original Message -
> > From: Repeater-Builder@yahoogroups.com 
> >   
> >  
> >  >   
> >  >
> > To: Repeater-Builder@yahoogroups.com 
> >   
> >  
> >  >   
> >  >
> > Sent: Tue Jun 30 16:33:25 2009
> > Subject: [Repeater-Builder] DB-224 Phasing Harness
> > 
> > 
> > 
> > Here we go again!
> > 
> > Got a new harness about a year ago, & now that I'm fixing
> > to put the antenna up, it's time to put it on.
> > 
> > Top section was fine (had to re-locate the ground lugs, as
> > the actual antenna is kinda old).
> > 
> > Anyway, started on the bottom section & noticed that there
> > was a length of coax coming out of one of the 'Y's that
> > had no connector & was not sealed.
> > 
> > Both ends with N connectors (to top & to station) are attached,
> > it's just this appendage that has no covering that bothers
> > me!
> > 
> > I've called Andrew on the antenna, but they haven't called
> > me back yet, so figured I'd ask the real experts what this
> > thing is. Obviously, if it's supposed to be there, I'll
> > seal it up.
> > 
> > Thanks,
> > 
> > Tim W5FN
> >
>

Re: [Repeater-Builder] GM300 Crossband Ham repeater Bi-Directional

[Maire-Radios]

have build one  same radio's and used 2 Zetron 37.


  - Original Message - 
  From: turboelesjuan 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Tuesday, June 30, 2009 3:42 PM
  Subject: [Repeater-Builder] GM300 Crossband Ham repeater Bi-Directional





  A little background on what I'm trying to accomplish here;

  I'm a member of a Ham radio club but do not live in the city the club's 
repeater resides in. Due to the distance away I'm unable to access the repeater 
with a handheld radio without the use of a large external antenna and thats 
what I'd like to change.

  Installed in my vehicle is a Yaesu FT-8800 mobile that has ability to perform 
crossband repeat option. Example: A: 145.170MHz (-600khz offset) B: 438.500MHz 
simplex.

  I have a UHF Radio that I can set to 438.500MHz simplex to walk around my 
house and both TALK and RECEIVE traffic to and from the repeater. Basically the 
radio in my car has the ability to transmit and receive on BOTH frequencies.

  Heres my question: Is there a controller I can build which has the ability to 
control TWO Motorola GM300 mobiles w/16pin connectors the same way? Use each 
radio as a transceiver for bi-directional traffic? I already have both of the 
GM300 radios and they didn't cost 400$, which my 8800 Did. I want something 
perm. installed at my house so I can use a small UHF handheld on low power 
anywhere around my area to chat.

  Is this possible?

  Thanks!!
  -Scott



  

[Repeater-Builder] Re: DB-224 Phasing Harness

[tahrens301]

Hi Norm,

The DB-224E is just a 224 that has all of the elements lined
up in the same direction.  Guess they had to make a separate
antenna for those folks who didn't want to loosen the elements
and rotate them! :-)

It took about 4 months to get the harness, so not surprised they
don't want to do it.  They said they had to wait till they had
a run of antennas to make before they'd do the harness.

I honestly don't remember how much the harness was.  sorry

Tim




--- In Repeater-Builder@yahoogroups.com, "NORM KNAPP"  wrote:
>
> Interesting. Is this a harness for a DB-224E? I was told a couple years ago 
> that Andrew wouldn't sell a harness anymore. 'Bout how much was the harness?
> 73 de N5NPO
> 
> - Original Message -
> From: Repeater-Builder@yahoogroups.com 
> To: Repeater-Builder@yahoogroups.com 
> Sent: Tue Jun 30 17:01:29 2009
> Subject: [Repeater-Builder] Re: DB-224 Phasing Harness
> 
> 
> 
> Hi NPO,
> 
> It's a replacement harness - the other one had problems, so
> we just ordered a new one.
> 
> Haven't looked at it on analyzer - was gonna do that when I
> got it installed.
> 
> I'll keep you posted.
> 
> Tim
> 
> --- In Repeater-Builder@yahoogroups.com 
>  , "NORM KNAPP"  wrote:
> >
> > When you find out what is going on with that, let me know. I have installed 
> > one or two of them with that blank stub myself. Is this for a DB-224A or 
> > DB-224E or what? Is this a replacement harness? Have you swept it with a 
> > sitemaster or an antenna analyzer?
> > 73 de N5NPO
> > 
> > - Original Message -
> > From: Repeater-Builder@yahoogroups.com 
> >   
> >  >  >
> > To: Repeater-Builder@yahoogroups.com 
> >   
> >  >  >
> > Sent: Tue Jun 30 16:33:25 2009
> > Subject: [Repeater-Builder] DB-224 Phasing Harness
> > 
> > 
> > 
> > Here we go again!
> > 
> > Got a new harness about a year ago, & now that I'm fixing
> > to put the antenna up, it's time to put it on.
> > 
> > Top section was fine (had to re-locate the ground lugs, as
> > the actual antenna is kinda old).
> > 
> > Anyway, started on the bottom section & noticed that there
> > was a length of coax coming out of one of the 'Y's that
> > had no connector & was not sealed.
> > 
> > Both ends with N connectors (to top & to station) are attached,
> > it's just this appendage that has no covering that bothers
> > me!
> > 
> > I've called Andrew on the antenna, but they haven't called
> > me back yet, so figured I'd ask the real experts what this
> > thing is. Obviously, if it's supposed to be there, I'll
> > seal it up.
> > 
> > Thanks,
> > 
> > Tim W5FN
> >
>

[Repeater-Builder] Re: ACC Controller Power & I/O Connector Part Numbers?

[skipp025]

Hi Scott, 

Don't know if they are exactly the KK type but I had found 
the one you mentioned in the Jameco Catalog. The RC-85 J3 
connector is 14 pins while the J4 connector is 8 pins. I 
was hoping to do it all in one connector each but finding 
the exact 8 & 14 pin units is not easy. 

I'll try Digi-Key and Mouser... thanks much.

cheers
skipp 

> Scott Zimmerman  wrote:
>
> Skipp,
> 
> I *thought* these were KK series Molex plugs that fit .1" header pins. I 
> don't remember off-hand how many pins are needed for each, but try molex 
> #22-01-2xxx. I am looking in the Jameco catalog and a 10 position 
> version is a 22-01-2107.
> 
> Here is Mouser catalog page 1450. It shows all different types:
> http://www.mouser.com/catalog/catalogUSD/638/1450.pdf
> I *think* your looking for figure 'A'.
> 
> Digikey has them too:
> http://dkc3.digikey.com/PDF/B092/P0181.pdf
> This is Page 181. Page 182 has more.
> 
> These are just the housings, you'll need to order the pins separate.
> 
> If you are looking to go from .1" header to a terminal block type 
> interface, you're on your own. I made an adapter board one time that 
> brought the pins out to terminal strips for easy connectivity.
> 
> Scott
> 
> Scott Zimmerman
> Amateur Radio Call N3XCC
> 474 Barnett Road
> Boswell, PA 15531
> 
> 
> skipp025 wrote:
> > re: ACC Controller Power & I/O Connector Part Numbers? 
> > 
> > Anyone have a current source and part number(s) for the 
> > ACC RC-85 Repeater Controller logic and power jacks/plugs? 
> > 
> > thanks in advance for your replies. 
> > 
> > cheers, 
> > s. 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > Yahoo! Groups Links
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > No virus found in this incoming message.
> > Checked by AVG - www.avg.com 
> > Version: 8.5.375 / Virus Database: 270.13.1/2211 - Release Date: 06/30/09 
> > 11:37:00
> >
>

RE: [Repeater-Builder] GM300 Crossband Ham repeater Bi-Directional

[Chris Curtis]

To be honest, I'd get an old alinco 599 for cheap and do what your yaesu
does.

Otherwise, get an arcom 210 or something similar and set EACH port for "non
repeating".
Then when a signal on one port comes in, it'll repeat on the other ports but
not the port receiving.
And vice versa for the other port or ports.

Chris
Kb0wlf

> -Original Message-
> From: Repeater-Builder@yahoogroups.com [mailto:Repeater-
> buil...@yahoogroups.com] On Behalf Of turboelesjuan
> Sent: Tuesday, June 30, 2009 2:43 PM
> To: Repeater-Builder@yahoogroups.com
> Subject: [Repeater-Builder] GM300 Crossband Ham repeater Bi-Directional
> 
> A little background on what I'm trying to accomplish here;
> 
> I'm a member of a Ham radio club but do not live in the city the club's
> repeater resides in.  Due to the distance away I'm unable to access the
> repeater with a handheld radio without the use of a large external
> antenna and thats what I'd like to change.
> 
> Installed in my vehicle is a Yaesu FT-8800 mobile that has ability to
> perform crossband repeat option.  Example:  A: 145.170MHz (-600khz
> offset) B: 438.500MHz simplex.
> 
> I have a UHF Radio that I can set to 438.500MHz simplex to walk around
> my house and both TALK and RECEIVE traffic to and from the repeater.
> Basically the radio in my car has the ability to transmit and receive
> on BOTH frequencies.
> 
> Heres my question:  Is there a controller I can build which has the
> ability to control TWO Motorola GM300 mobiles w/16pin connectors the
> same way?  Use each radio as a transceiver for bi-directional traffic?
> I already have both of the GM300 radios and they didn't cost 400$,
> which my 8800 Did.  I want something perm. installed at my house so I
> can use a small UHF handheld on low power anywhere around my area to
> chat.
> 
> Is this possible?
> 
> Thanks!!
> -Scott
> 
> 
> 
> 
> 
> 
> 
> Yahoo! Groups Links
> 
> 
> 
> No virus found in this incoming message.
> Checked by AVG - www.avg.com
> Version: 8.5.375 / Virus Database: 270.12.83/2191 - Release Date:
> 06/30/09 11:37:00

RE: Re: [Repeater-Builder] GM300 Crossband Ham repeater Bi-Directional

[gregm...@rocketmail.com]

There are simple controller cables on ebay for about $10. These seem to work 
ok. I use one for uhf with a mobile duplexer as a portable repeater.

Greg

Benjamin L. Naber wrote:
> have a looksee on ebay, probably going to find one for under $30. Was
> going to do that before 
> I was unable to locate any reasonably prices gm300 or maxtracs around
> columbus ga 
> turboelesjuan wrote:
>   A little background on what I'm trying to accomplish here; 
> I'm a member of a Ham radio club but do not live in the city the club's
> repeater resides in. Due to the distance away I'm unable to access the
> repeater with a handheld radio without the use of a large external
> antenna and thats what I'd like to change. 
> Installed in my vehicle is a Yaesu FT-8800 mobile that has ability to
> perform crossband repeat option. Example: A: 145.170MHz (-600khz
> offset) B: 438.500MHz simplex. 
> I have a UHF Radio that I can set to 438.500MHz simplex to walk around
> my house and both TALK and RECEIVE traffic to and from the repeater.
> Basically the radio in my car has the ability to transmit and receive
> on BOTH frequencies. 
> Heres my question: Is there a controller I can build which has the
> ability to control TWO Motorola GM300 mobiles w/16pin connectors the
> same way? Use each radio as a transceiver for bi-directional traffic? I
> already have both of the GM300 radios and they didn't cost 400$, which
> my 8800 Did. I want something perm. installed at my house so I can use
> a small UHF handheld on low power anywhere around my area to chat. 
> Is this possible? 
> Thanks!! 
> -Scott 
>  



  

Re: [Repeater-Builder] Re: DB-224 Phasing Harness

[NORM KNAPP]

Interesting. Is this a harness for a DB-224E? I was told a couple years ago 
that Andrew wouldn't sell a harness anymore. 'Bout how much was the harness?
73 de N5NPO

- Original Message -
From: Repeater-Builder@yahoogroups.com 
To: Repeater-Builder@yahoogroups.com 
Sent: Tue Jun 30 17:01:29 2009
Subject: [Repeater-Builder] Re: DB-224 Phasing Harness



Hi NPO,

It's a replacement harness - the other one had problems, so
we just ordered a new one.

Haven't looked at it on analyzer - was gonna do that when I
got it installed.

I'll keep you posted.

Tim

--- In Repeater-Builder@yahoogroups.com 
 , "NORM KNAPP"  wrote:
>
> When you find out what is going on with that, let me know. I have installed 
> one or two of them with that blank stub myself. Is this for a DB-224A or 
> DB-224E or what? Is this a replacement harness? Have you swept it with a 
> sitemaster or an antenna analyzer?
> 73 de N5NPO
> 
> - Original Message -
> From: Repeater-Builder@yahoogroups.com 
>   
> mailto:Repeater-Builder%40yahoogroups.com> 
> >
> To: Repeater-Builder@yahoogroups.com 
>   
> mailto:Repeater-Builder%40yahoogroups.com> 
> >
> Sent: Tue Jun 30 16:33:25 2009
> Subject: [Repeater-Builder] DB-224 Phasing Harness
> 
> 
> 
> Here we go again!
> 
> Got a new harness about a year ago, & now that I'm fixing
> to put the antenna up, it's time to put it on.
> 
> Top section was fine (had to re-locate the ground lugs, as
> the actual antenna is kinda old).
> 
> Anyway, started on the bottom section & noticed that there
> was a length of coax coming out of one of the 'Y's that
> had no connector & was not sealed.
> 
> Both ends with N connectors (to top & to station) are attached,
> it's just this appendage that has no covering that bothers
> me!
> 
> I've called Andrew on the antenna, but they haven't called
> me back yet, so figured I'd ask the real experts what this
> thing is. Obviously, if it's supposed to be there, I'll
> seal it up.
> 
> Thanks,
> 
> Tim W5FN
>

[Repeater-Builder] Re: DB-224 Phasing Harness

[tahrens301]

Hi NPO,

It's a replacement harness - the other one had problems, so
we just ordered a new one.

Haven't looked at it on analyzer - was gonna do that when I
got it installed.

I'll keep you posted.

Tim



--- In Repeater-Builder@yahoogroups.com, "NORM KNAPP"  wrote:
>
> When you find out what is going on with that, let me know. I have installed 
> one or two of them with that blank stub myself. Is this for a DB-224A or 
> DB-224E or what? Is this a replacement harness? Have you swept it with a 
> sitemaster or an antenna analyzer?
> 73 de N5NPO
> 
> - Original Message -
> From: Repeater-Builder@yahoogroups.com 
> To: Repeater-Builder@yahoogroups.com 
> Sent: Tue Jun 30 16:33:25 2009
> Subject: [Repeater-Builder] DB-224 Phasing Harness
> 
> 
> 
> Here we go again!
> 
> Got a new harness about a year ago, & now that I'm fixing
> to put the antenna up, it's time to put it on.
> 
> Top section was fine (had to re-locate the ground lugs, as
> the actual antenna is kinda old).
> 
> Anyway, started on the bottom section & noticed that there
> was a length of coax coming out of one of the 'Y's that
> had no connector & was not sealed.
> 
> Both ends with N connectors (to top & to station) are attached,
> it's just this appendage that has no covering that bothers
> me!
> 
> I've called Andrew on the antenna, but they haven't called
> me back yet, so figured I'd ask the real experts what this
> thing is. Obviously, if it's supposed to be there, I'll
> seal it up.
> 
> Thanks,
> 
> Tim W5FN
>

Re: [Repeater-Builder] GM300 Crossband Ham repeater Bi-Directional

[Benjamin L. Naber]

have a looksee on ebay, probably going to find one for under $30. Was 
going to do that before
I was unable to locate any reasonably prices gm300 or maxtracs around 
columbus ga





turboelesjuan wrote:



A little background on what I'm trying to accomplish here;

I'm a member of a Ham radio club but do not live in the city the 
club's repeater resides in. Due to the distance away I'm unable to 
access the repeater with a handheld radio without the use of a large 
external antenna and thats what I'd like to change.


Installed in my vehicle is a Yaesu FT-8800 mobile that has ability to 
perform crossband repeat option. Example: A: 145.170MHz (-600khz 
offset) B: 438.500MHz simplex.


I have a UHF Radio that I can set to 438.500MHz simplex to walk around 
my house and both TALK and RECEIVE traffic to and from the repeater. 
Basically the radio in my car has the ability to transmit and receive 
on BOTH frequencies.


Heres my question: Is there a controller I can build which has the 
ability to control TWO Motorola GM300 mobiles w/16pin connectors the 
same way? Use each radio as a transceiver for bi-directional traffic? 
I already have both of the GM300 radios and they didn't cost 400$, 
which my 8800 Did. I want something perm. installed at my house so I 
can use a small UHF handheld on low power anywhere around my area to chat.


Is this possible?

Thanks!!
-Scott

Re: [Repeater-Builder] DB-224 Phasing Harness

[NORM KNAPP]

When you find out what is going on with that, let me know. I have installed one 
or two of them with that blank stub myself. Is this for a DB-224A or DB-224E or 
what? Is this a replacement harness? Have you swept it with a sitemaster or an 
antenna analyzer?
73 de N5NPO

- Original Message -
From: Repeater-Builder@yahoogroups.com 
To: Repeater-Builder@yahoogroups.com 
Sent: Tue Jun 30 16:33:25 2009
Subject: [Repeater-Builder] DB-224 Phasing Harness



Here we go again!

Got a new harness about a year ago, & now that I'm fixing
to put the antenna up, it's time to put it on.

Top section was fine (had to re-locate the ground lugs, as
the actual antenna is kinda old).

Anyway, started on the bottom section & noticed that there
was a length of coax coming out of one of the 'Y's that
had no connector & was not sealed.

Both ends with N connectors (to top & to station) are attached,
it's just this appendage that has no covering that bothers
me!

I've called Andrew on the antenna, but they haven't called
me back yet, so figured I'd ask the real experts what this
thing is. Obviously, if it's supposed to be there, I'll
seal it up.

Thanks,

Tim W5FN

[Repeater-Builder] GM300 Crossband Ham repeater Bi-Directional

[turboelesjuan]

A little background on what I'm trying to accomplish here;

I'm a member of a Ham radio club but do not live in the city the club's 
repeater resides in.  Due to the distance away I'm unable to access the 
repeater with a handheld radio without the use of a large external antenna and 
thats what I'd like to change.

Installed in my vehicle is a Yaesu FT-8800 mobile that has ability to perform 
crossband repeat option.  Example:  A: 145.170MHz (-600khz offset) B: 
438.500MHz simplex.

I have a UHF Radio that I can set to 438.500MHz simplex to walk around my house 
and both TALK and RECEIVE traffic to and from the repeater.  Basically the 
radio in my car has the ability to transmit and receive on BOTH frequencies.

Heres my question:  Is there a controller I can build which has the ability to 
control TWO Motorola GM300 mobiles w/16pin connectors the same way?  Use each 
radio as a transceiver for bi-directional traffic?  I already have both of the 
GM300 radios and they didn't cost 400$, which my 8800 Did.  I want something 
perm. installed at my house so I can use a small UHF handheld on low power 
anywhere around my area to chat.

Is this possible?

Thanks!!
-Scott

[Repeater-Builder] DB-224 Phasing Harness

[tahrens301]

Here we go again!

Got a new harness about a year ago, & now that I'm fixing
to put the antenna up, it's time to put it on.

Top section was fine (had to re-locate the ground lugs, as
the actual antenna is kinda old).

Anyway, started on the bottom section & noticed that there
was a length of coax coming out of one of the 'Y's that
had no connector & was not sealed.

Both ends with N connectors (to top & to station) are attached,
it's just this appendage that has no covering that bothers
me!

I've called Andrew on the antenna, but they haven't called
me back yet, so figured I'd ask the real experts what this
thing is.  Obviously, if it's supposed to be there, I'll
seal it up.

Thanks,

Tim W5FN

[Repeater-Builder] Re: DB-224 patterns on side of tower.

[tahrens301]

Hi Guys,

Thanks for the info on the 224 - there's not much behind us that
we really want to cover, so it's not a big deal.

Since we're putting up a couple of antennas (one of which I have
the final say so), I'll humor the old salt on his, & do all 4
straight aligned on mine. :-)

Thanks again!

Tim



--- In Repeater-Builder@yahoogroups.com, Jacob Suter  wrote:
>
> Theres a lot to account for in this:
> 
> A> side-mounting on self-standing towers with significant amounts of leg 
> angle will reduce the 'total blockage' of the antenna in any direction 
> at one time.  As long as one dipole is visable on your antenna you can 
> still calculate for that one dipole's gain alone. 
> 
> B> not all towers are equal.  You're going to see a lot more random 
> reflection/attenuation from a tower thats 'coated' with coax or internal 
> structure vs one thats practically bare. 
> 
> C> offset mounting length can make all the difference in the world.  a 4 
> ft offset at 927 mhz is significantly more wavelengths than a 4 ft 
> offset at 2M/220/440. 
> 
> D> most towers tend to have less cable hanging on them the farther you 
> go up (or even switch to a smaller structure...)
> 
> Just a few more things to consider...
> 
> JS
> 
> 
> 
> 
> 
> Roger White wrote:
> >
> >
> > Our 145.43 MHz repeater has been on a self supporting tower 450 ft. 
> > high, at the 250 ft. level ( a Stationmaster at first and a dB224 
> > later) and now at the 350 ft. level (dB224). The tower face at both 
> > heights was considerable (well over 20 to 25 ft. wide). The antenna 
> > was offset from the tower leg a considerable distance in both 
> > instances and the dipole elements were orientated for a omni 
> > pattern. My guess is that the tower face is so big where we have had 
> > the antennas at that the effect off offsetting the dipoles in one 
> > direction is minor compared to the effect that the large tower face 
> > would have on the pattern. 
> >  
> > As you would expect, the pattern nulls off the backside 
> > are considerable, but not severe enough to limit communications. The 
> > higher frequency you go, the less the effect is. We have a 224 MHz 
> > repeater (dB224JJ set for an omni pattern) at the 300 ft. level and it 
> > seems to do quite well hearing off the backside. Our 927 MHz repeater 
> > at 400 feet (using an unused paging antenna) seems to hear off the 
> > backside almost as well as it does off the front side.
> >  
> > Since beggars can't be choosers, we have over the last 25 years on the 
> > tower accepted the pattern deficiencies. I can take a few pics if you 
> > would like to see how they are mounted.
> >  
> > Roger W5RDW
> > Murphy, Texas
> > DFW area
> >  
> > - Original Message -
> >
> > *From:* tahrens301 
> > *To:* Repeater-Builder@yahoogroups.com
> > 
> > *Sent:* Tuesday, June 30, 2009 2:35 PM
> > *Subject:* [Repeater-Builder] DB-224 patterns on side of tower.
> >
> > Hi Folks,
> >
> > We are putting up the DB-224 on the side of the tower,
> > which is one of those large 3 legged towers. (like you
> > see at microwave & telephone sites).
> >
> > I have the DB-products data sheet on the 224, and it
> > has some plots for side mounting on the tower.
> >
> > The plot in question is the 224E (all in line, pointed
> > away from the tower).
> >
> > According to DBprod, it would give the appropriate pattern
> > for our desired area. However, one of the old salts here
> > (who has final say-so) says that you really have to put some
> > left and right angulation on the elements to get that pattern.
> >
> > I guess the real question is how positioning on the side of
> > the large tower affects the pattern - if the elements are
> > directly perpendicular to the tower leg, versus having some
> > rotation on the leg.
> >
> > I'm thinking that we will probably just have to experiment
> > with what we get per old-salt's method & see how it works.
> >
> > Anybody have any other ideas?
> >
> > Thanks,
> >
> > Tim W5FN
> >
> >
>

Re: [Repeater-Builder] DB-224 patterns on side of tower.

[Jacob Suter]

Theres a lot to account for in this:

A> side-mounting on self-standing towers with significant amounts of leg 
angle will reduce the 'total blockage' of the antenna in any direction 
at one time.  As long as one dipole is visable on your antenna you can 
still calculate for that one dipole's gain alone. 

B> not all towers are equal.  You're going to see a lot more random 
reflection/attenuation from a tower thats 'coated' with coax or internal 
structure vs one thats practically bare. 

C> offset mounting length can make all the difference in the world.  a 4 
ft offset at 927 mhz is significantly more wavelengths than a 4 ft 
offset at 2M/220/440. 

D> most towers tend to have less cable hanging on them the farther you 
go up (or even switch to a smaller structure...)

Just a few more things to consider...

JS





Roger White wrote:
>
>
> Our 145.43 MHz repeater has been on a self supporting tower 450 ft. 
> high, at the 250 ft. level ( a Stationmaster at first and a dB224 
> later) and now at the 350 ft. level (dB224). The tower face at both 
> heights was considerable (well over 20 to 25 ft. wide). The antenna 
> was offset from the tower leg a considerable distance in both 
> instances and the dipole elements were orientated for a omni 
> pattern. My guess is that the tower face is so big where we have had 
> the antennas at that the effect off offsetting the dipoles in one 
> direction is minor compared to the effect that the large tower face 
> would have on the pattern. 
>  
> As you would expect, the pattern nulls off the backside 
> are considerable, but not severe enough to limit communications. The 
> higher frequency you go, the less the effect is. We have a 224 MHz 
> repeater (dB224JJ set for an omni pattern) at the 300 ft. level and it 
> seems to do quite well hearing off the backside. Our 927 MHz repeater 
> at 400 feet (using an unused paging antenna) seems to hear off the 
> backside almost as well as it does off the front side.
>  
> Since beggars can't be choosers, we have over the last 25 years on the 
> tower accepted the pattern deficiencies. I can take a few pics if you 
> would like to see how they are mounted.
>  
> Roger W5RDW
> Murphy, Texas
> DFW area
>  
> - Original Message -
>
> *From:* tahrens301 
> *To:* Repeater-Builder@yahoogroups.com
> 
> *Sent:* Tuesday, June 30, 2009 2:35 PM
> *Subject:* [Repeater-Builder] DB-224 patterns on side of tower.
>
> Hi Folks,
>
> We are putting up the DB-224 on the side of the tower,
> which is one of those large 3 legged towers. (like you
> see at microwave & telephone sites).
>
> I have the DB-products data sheet on the 224, and it
> has some plots for side mounting on the tower.
>
> The plot in question is the 224E (all in line, pointed
> away from the tower).
>
> According to DBprod, it would give the appropriate pattern
> for our desired area. However, one of the old salts here
> (who has final say-so) says that you really have to put some
> left and right angulation on the elements to get that pattern.
>
> I guess the real question is how positioning on the side of
> the large tower affects the pattern - if the elements are
> directly perpendicular to the tower leg, versus having some
> rotation on the leg.
>
> I'm thinking that we will probably just have to experiment
> with what we get per old-salt's method & see how it works.
>
> Anybody have any other ideas?
>
> Thanks,
>
> Tim W5FN
>
> 

Re: [Repeater-Builder] DB-224 patterns on side of tower.

[Roger White]

Our 145.43 MHz repeater has been on a self supporting tower 450 ft. high, at 
the 250 ft. level ( a Stationmaster at first and a dB224 later) and now at the 
350 ft. level (dB224). The tower face at both heights was considerable (well 
over 20 to 25 ft. wide). The antenna was offset from the tower leg a 
considerable distance in both instances and the dipole elements were orientated 
for a omni pattern. My guess is that the tower face is so big where we have had 
the antennas at that the effect off offsetting the dipoles in one direction is 
minor compared to the effect that the large tower face would have on the 
pattern. 

As you would expect, the pattern nulls off the backside are considerable, but 
not severe enough to limit communications. The higher frequency you go, the 
less the effect is. We have a 224 MHz repeater (dB224JJ set for an omni 
pattern) at the 300 ft. level and it seems to do quite well hearing off the 
backside. Our 927 MHz repeater at 400 feet (using an unused paging antenna) 
seems to hear off the backside almost as well as it does off the front side.

Since beggars can't be choosers, we have over the last 25 years on the tower 
accepted the pattern deficiencies. I can take a few pics if you would like to 
see how they are mounted.

Roger W5RDW
Murphy, Texas
DFW area

- Original Message - 
  From: tahrens301 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Tuesday, June 30, 2009 2:35 PM
  Subject: [Repeater-Builder] DB-224 patterns on side of tower.





  Hi Folks,

  We are putting up the DB-224 on the side of the tower,
  which is one of those large 3 legged towers. (like you
  see at microwave & telephone sites).

  I have the DB-products data sheet on the 224, and it
  has some plots for side mounting on the tower. 

  The plot in question is the 224E (all in line, pointed
  away from the tower).

  According to DBprod, it would give the appropriate pattern
  for our desired area. However, one of the old salts here
  (who has final say-so) says that you really have to put some
  left and right angulation on the elements to get that pattern.

  I guess the real question is how positioning on the side of
  the large tower affects the pattern - if the elements are
  directly perpendicular to the tower leg, versus having some
  rotation on the leg.

  I'm thinking that we will probably just have to experiment
  with what we get per old-salt's method & see how it works.

  Anybody have any other ideas?

  Thanks,

  Tim W5FN



  

Re: [Repeater-Builder] DB-224 patterns on side of tower.

[Jim WB5OXQ inb Waco, TX]

Done this several times.  The tower will cause a shadow on bhe back side no 
matter how you position the dipoles.  If you are wanting maximum gain in one 
direction away from the tower you must like up the dipoles in that direction.  
Moving some to the side really wont help the sides enough to tell and it will 
reduce the gain in the desired direction.  I believe the DB products engineers 
know what they are talking about.  For example if all dipoles are away from the 
tower leg in line you might get 9 db in front, 6 db to the sides and very 
little to the back.  If you turn dipoles to each side you still get about 6 db 
on each side but now only 6 to the front.  Dipoles are not very directional and 
when all are in phase together you get maximum gain in that direction.  You 
will never get an omnidirectional pattern on a side mount nd if you need the 
offset patern to shift the signal in 1 major direction follow the manual 
directions.  I have an 8 bay on the side of a tower with 36" leg spacing and it 
is located 16 miles away from the center of the desired coverage area.   At 
450' above ground it gives aprox 60 mobile miles to the front, 45 miles at 90 
degrees and 25 to the rear on the 2 meter band.
WB5OXQ.
PS I am not old (62) but I have been a ham since 74 and have been trustee for 
as many as 6 repeaters at a time now thankfully only 1 !
  - Original Message - 
  From: tahrens301 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Tuesday, June 30, 2009 2:35 PM
  Subject: [Repeater-Builder] DB-224 patterns on side of tower.





  Hi Folks,

  We are putting up the DB-224 on the side of the tower,
  which is one of those large 3 legged towers. (like you
  see at microwave & telephone sites).

  I have the DB-products data sheet on the 224, and it
  has some plots for side mounting on the tower. 

  The plot in question is the 224E (all in line, pointed
  away from the tower).

  According to DBprod, it would give the appropriate pattern
  for our desired area. However, one of the old salts here
  (who has final say-so) says that you really have to put some
  left and right angulation on the elements to get that pattern.

  I guess the real question is how positioning on the side of
  the large tower affects the pattern - if the elements are
  directly perpendicular to the tower leg, versus having some
  rotation on the leg.

  I'm thinking that we will probably just have to experiment
  with what we get per old-salt's method & see how it works.

  Anybody have any other ideas?

  Thanks,

  Tim W5FN



  

Re: [Repeater-Builder] ACC Controller Power & I/O Connector Part Numbers?

[Scott Zimmerman]

Skipp,

I *thought* these were KK series Molex plugs that fit .1" header pins. I 
don't remember off-hand how many pins are needed for each, but try molex 
#22-01-2xxx. I am looking in the Jameco catalog and a 10 position 
version is a 22-01-2107.

Here is Mouser catalog page 1450. It shows all different types:
http://www.mouser.com/catalog/catalogUSD/638/1450.pdf
I *think* your looking for figure 'A'.

Digikey has them too:
http://dkc3.digikey.com/PDF/B092/P0181.pdf
This is Page 181. Page 182 has more.

These are just the housings, you'll need to order the pins separate.

If you are looking to go from .1" header to a terminal block type 
interface, you're on your own. I made an adapter board one time that 
brought the pins out to terminal strips for easy connectivity.

Scott

Scott Zimmerman
Amateur Radio Call N3XCC
474 Barnett Road
Boswell, PA 15531


skipp025 wrote:
> re: ACC Controller Power & I/O Connector Part Numbers? 
> 
> Anyone have a current source and part number(s) for the 
> ACC RC-85 Repeater Controller logic and power jacks/plugs? 
> 
> thanks in advance for your replies. 
> 
> cheers, 
> s. 
> 
> 
> 
> 
> 
> 
> 
> Yahoo! Groups Links
> 
> 
> 
> 
> 
> 
> 
> No virus found in this incoming message.
> Checked by AVG - www.avg.com 
> Version: 8.5.375 / Virus Database: 270.13.1/2211 - Release Date: 06/30/09 
> 11:37:00
> 

[Repeater-Builder] DB-224 patterns on side of tower.

[tahrens301]

Hi Folks,

We are putting up the DB-224 on the side of the tower,
which is one of those large 3 legged towers.  (like you
see at microwave & telephone sites).

I have the DB-products data sheet on the 224, and it
has some plots for side mounting on the tower. 

The plot in question is the 224E (all in line, pointed
away from the tower).

According to DBprod, it would give the appropriate pattern
for our desired area.  However, one of the old salts here
(who has final say-so) says that you really have to put some
left and right angulation on the elements to get that pattern.

I guess the real question is how positioning on the side of
the large tower affects the pattern - if the elements are
directly perpendicular to the tower leg, versus having some
rotation on the leg.

I'm thinking that we will probably just have to experiment
with what we get per old-salt's method & see how it works.

Anybody have any other ideas?

Thanks,

Tim  W5FN

[Repeater-Builder] ACC Controller Power & I/O Connector Part Numbers?

[skipp025]

re: ACC Controller Power & I/O Connector Part Numbers? 

Anyone have a current source and part number(s) for the 
ACC RC-85 Repeater Controller logic and power jacks/plugs? 

thanks in advance for your replies. 

cheers, 
s. 

[Repeater-Builder] New file uploaded to Repeater-Builder

[Repeater-Builder]

Hello,

This email message is a notification to let you know that
a file has been uploaded to the Files area of the Repeater-Builder 
group.

  File: /MSF5000/MSF5000 & PURC Documents.pdf 
  Uploaded by : wb6fly  
  Description : MSF5000 and PURC Documents 

You can access this file at the URL:
http://groups.yahoo.com/group/Repeater-Builder/files/MSF5000/MSF5000%20%26%20PURC%20Documents.pdf
 

To learn more about file sharing for your group, please visit:
http://help.yahoo.com/l/us/yahoo/groups/original/members/web/index.htmlfiles

Regards,

wb6fly 
 

RE: [Repeater-Builder] Phelps Dodge 522-509 Duplexers

[Bill Hudson]

 

I scanned the Phelps Dodge 522-509 duplexer manual into the files section of
this Yahoo group back in February of this year.

 

Look in FILES and find PD-522-509.pdf and you will have the manual.

 

Bill Hudson

W6CBS

 

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Mike Morris WA6ILQ
Sent: Tuesday, June 30, 2009 12:00 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Phelps Dodge 522-509 Duplexers

 






At 07:46 PM 06/29/09, you wrote:
>Does anyone know the specs for these cans? BTW, I have the tuning
>instructions for them if anyone wants a copy.
>
>73, Joe,. K1ike

That's one of the units that is not on the antenna systems page at 
repeater-builder.

I'd really like a copy of the tuning instructions for the web page, 
and if anyone has a data sheet that would be welcome as well. Can I 
get a couple of photos of it?

Mike WA6ILQ

Re: [Repeater-Builder] Re: DC Ground Lightning Protection / Concrete Electrode

[Burt Lang]

I would suggest anyone interested in this subject should Google "Ufer 
ground" and get the real facts on the subject.  The key to the "concrete 
encased ground electrode" is a properly installed rebar reinforcing in 
the concrete base.

Burt  VE2BMQ

Ed Bathgate wrote:
> 
> 
> 
> I'm going to disagree with the following posting:
> 
> If the tower is bolted to galvanized pipe that is embedded in concrete of
> which a significant amount is in contact with soil, you have a
> "concrete-encased grounding electrode" which is hard to improve upon. It is
> not likely that a ground rod would be worthwhile, since damp concrete
> (concrete in intimate contact with soil at grade level) is a fairly good
> conductor, and such a footing or foundation has hundreds of times the
> surface area of a ground rod.
> 
> I have read Ericsson specs for cellular tower installation in that 
> disagrees with the previous statement.
> 
> Standard concrete without conductive enhancing materials can crack, pop 
> or crumble if subjected to a direct lightning strike if ground rods are 
> not properly installed.   The water contained within the concrete will 
> vaporize instantly causing the concrete to fail.
> 
> There are types of conductive concrete mixes or additives that can be 
> used, but the most common practice is to use a ground rod from each leg 
> with a copper wire bonded to each tower leg.
> 
> Our mfg building at work is made from steel I-Beams into concrete.  I 
> have noticed each I-Beam has its own ground connection.  The strap is 
> bolted to the beam about 1" above the concrete, then disappears into the 
> concrete, and suspect there is a ground rod going into the soil beneath 
> the concrete piling, but that’s just a theory, as I dident see it before 
> the mud was poured.
> 
> Ed N3SDO
> 
> 
> 
> 






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[Repeater-Builder] Re: DC Ground Lightning Protection / Concrete Electrode

[Ed Bathgate]

I'm going to disagree with the following posting:

If the tower is bolted to galvanized pipe that is embedded in concrete
of
which a significant amount is in contact with soil, you have a
"concrete-encased grounding electrode" which is hard to improve upon. It
is
not likely that a ground rod would be worthwhile, since damp concrete
(concrete in intimate contact with soil at grade level) is a fairly good
conductor, and such a footing or foundation has hundreds of times the
surface area of a ground rod.

I have read Ericsson specs for cellular tower installation in that
disagrees with the previous statement.

Standard concrete without conductive enhancing materials can crack, pop
or crumble if subjected to a direct lightning strike if ground rods are
not properly installed.   The water contained within the concrete will
vaporize instantly causing the concrete to fail.
There are types of conductive concrete mixes or additives that can be
used, but the most common practice is to use a ground rod from each leg
with a copper wire bonded to each tower leg.

Our mfg building at work is made from steel I-Beams into concrete.  I
have noticed each I-Beam has its own ground connection.  The strap is
bolted to the beam about 1" above the concrete, then disappears into the
concrete, and suspect there is a ground rod going into the soil beneath
the concrete piling, but that's just a theory, as I dident see it before
the mud was poured.

Ed N3SDO

Re: [Repeater-Builder] Phelps Dodge 522-509 Duplexers

[Mike Morris WA6ILQ]

At 07:46 PM 06/29/09, you wrote:
>Does anyone know the specs for these cans?  BTW, I have the tuning
>instructions for them if anyone wants a copy.
>
>73, Joe,. K1ike

That's one of the units that is not on the antenna systems page at 
repeater-builder.

I'd really like a copy of the tuning instructions for the web page, 
and if anyone has a data sheet that would be welcome as well.   Can I 
get a couple of photos of it?

Mike WA6ILQ