Re: [Repeater-Builder] Reasonably low wind load antenna

[MCH]

I've been trying to get a replacement cable for a Hygain HG-52SS. They 
recommended TT as the only possible (emphasis on that word) source.

So, who would you recommend for them?

Joe M.

Larry Wagoner wrote:
> At 05:11 PM 6/24/2008, you wrote:
>> Doesn't Texas Towers and other such vendors sell heavy-duty aluminum mast
>> tubing? Why not try there?
> 
> The only thing is, Mark, that I for one will never do any business 
> with Texas Towers. We recently had a project to purchase radio 
> equipment for area hospitals and the people at Texas Towers did their 
> dead-level best to make it impossible to deal with them. They got 
> their wish - I will never do business with them - and I urge all 
> others to use the same policy.
> 
> Larry
> N5WLW 
> 
> 
> 
> 
> 
> 
> Yahoo! Groups Links
> 
> 
> 
> 
> 

RE: [Repeater-Builder] LBI for 19C320523G2 and 19C328763G1

[Eric Lemmon]

Milo,

The number 19C328763G1 does not appear in the GE microfiche index as an end
item, so I suspect that the number is actually  the part number of the PC
board itself.  Was this number etched into the copper, or was it stamped in
black ink?

The number falls into the range of numbers used as audio processor cards in
the Marc V interconnect terminal.  Please check the number carefully to
ensure you copied all of the digits correctly.  I wonder if the "6" is
actually a "2" or an "8".  Is the 19C328763G1 card actually installed in a
Mastr II station?  If so, what is its combination number?

73, Eric Lemmon WB6FLY
 

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Camilo So
Sent: Thursday, June 26, 2008 2:07 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] LBI for 19C320523G2 and 19C328763G1

Thank you Gary, 
The 19C328763G1 was printed on the PCB component side and it have IC
CA3089E, the data od CA3089E was a FM-IF Amplifier/Limiter.
 
Milo
 
 
 
 
 
 
 
- Original Message - 

 

From: Gary Glaenzer   
To: Repeater-Builder@yahoogroups.com
  
Sent: Thursday, June 26, 2008 1:14 PM
Subject: Re: [Repeater-Builder] LBI for 19C320523G2 and 19C328763G1



http://www.repeater-builder.com/ge/lbi-library/lbi-30032f.pdf

(19C320523G2)
 
what is the 19C328763G1 ??
 
Gary
 
 
 
 

- Original Message - 
From: Camilo So   
To: Repeater-Builder@yahoogroups.com
  
Sent: Thursday, June 26, 2008 12:03 PM
Subject: [Repeater-Builder] LBI for 19C320523G2 and
19C328763G1



Need help to find GE MASTR II the LBI for 19C320523G2 and
19C328763G1, Can't find it on Repeater Builder, need the LBI to order or
download the manual. 
Is there a way to search the board number 19C320523G2 to
LBI-, this is what I need to learn.
 
 
 
73
W4CSO










No virus found in this incoming message.
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Version: 8.0.101 / Virus Database: 270.4.1/1521 - Release
Date: 6/26/2008 11:20 AM




 

Re: [Repeater-Builder] LBI for 19C320523G2 and 19C328763G1

[Camilo So]

Thank you Gary, 
The 19C328763G1 was printed on the PCB component side and it have IC CA3089E, 
the data od CA3089E was a FM-IF Amplifier/Limiter.

Milo







- Original Message - 


  From: Gary Glaenzer 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Thursday, June 26, 2008 1:14 PM
  Subject: Re: [Repeater-Builder] LBI for 19C320523G2 and 19C328763G1



  http://www.repeater-builder.com/ge/lbi-library/lbi-30032f.pdf   (19C320523G2)

  what is the 19C328763G1 ??

  Gary




- Original Message - 
From: Camilo So 
To: Repeater-Builder@yahoogroups.com 
Sent: Thursday, June 26, 2008 12:03 PM
Subject: [Repeater-Builder] LBI for 19C320523G2 and 19C328763G1



Need help to find GE MASTR II the LBI for 19C320523G2 and 19C328763G1, 
Can't find it on Repeater Builder, need the LBI to order or download the 
manual. 
Is there a way to search the board number 19C320523G2 to LBI-, this is 
what I need to learn.



73
W4CSO







No virus found in this incoming message.
Checked by AVG. 
Version: 8.0.101 / Virus Database: 270.4.1/1521 - Release Date: 6/26/2008 
11:20 AM


   

RE: [Repeater-Builder] Help! Duplexer setup = with two service monitors and a spectrum analyzer

[de W5DK]

Joel, it will be almost the same, but instead of seeing the “waves” of the 
peak/pass and dip/notch., you will only see the vertical “spike” of the 
generated signal. Just like if you hooked the generator directly to the S/A. 
you will only be able to adjust for max pass of the desired freq (tallest 
spike)and min pass (shortest spike)of the reject/notch freq.

 

Hook the s/a to the antenna port, a dummy to one side of the duplexer while 
generating into the side you are adjusting. Then switch sides. I used to have 
to do exactly this till I got a tracking gen s/a. --then I re-visited some of 
my work and it couldn’t be improved. Made me wonder why I spent the extra money 
on the new service monitor. hi

73

Don

W5DK

 

From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of 
Joel
Sent: Thursday, June 26, 2008 1:14 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Help! Duplexer setup = with two service 
monitors and a spectrum analyzer

 

 

Got you Don, thanks for responding.

 

But I'm looking for something more specific as to, how one may hook up, the 
aforementioned equipment to do what the spectrum analyzer/with the TG does to 
obtain a set of duplexer tuned to a specific frequency. 

 

v44kai.Joel.

 

 

- Original Message - 

From: de W5DK   

To: Repeater-Builder@yahoogroups.com 

Sent: Thursday, June 26, 2008 11:40 AM

Subject: RE: [Repeater-Builder] Help! Duplexer setup = with two service 
monitors and a spectrum analyzer

 

No, you will only see the peak and skirts of the generated signal, you need to 
terminate all the duplexer ports with 3db 50 ohm pads and tune for pass first, 
lock those down them tune the reject path

 

Bottom of first link is a sketch.

73

Don W5DK

 

http://www.repeater-builder.com/wacom/wp6xx-vhf-tuning-instructions.pdf

 

http://www.repeater-builder.com/antenna/ant-sys-index.html#duplexers

 

 

From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of 
Joel
Sent: Thursday, June 26, 2008 10:54 AM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Help! Duplexer setup = with two service monitors 
and a spectrum analyzer

 

Can someone in the group give me a sketch diagram of the setup, for tuning a 
duplexer with the following equipment I have?.

I have two (2) service monitors (Marconi 2955/A), and a spectrum analyzer 
(Avcom PSA-65A, no built-in tracking generator)

Q...Will I be able to see the response graph of the duplexer, as when I use 
a spectrum analyzer with a built-in tracking generator?

All comments will be appreciated, and set aside for the radio club here 
archive.

v44kai.Joel. 

  _  


No virus found in this incoming message.
Checked by AVG. 
Version: 8.0.101 / Virus Database: 270.4.1/1519 - Release Date: 6/25/2008 4:13 
PM

 

Re: [Repeater-Builder] Help! Duplexer setup = with two service monitors and a spectrum analyzer

[Joel]

Got you Don, thanks for responding.

But I'm looking for something more specific as to, how one may hook up, the 
aforementioned equipment to do what the spectrum analyzer/with the TG does to 
obtain a set of duplexer tuned to a specific frequency. 

v44kai.Joel.


  - Original Message - 
  From: de W5DK 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Thursday, June 26, 2008 11:40 AM
  Subject: RE: [Repeater-Builder] Help! Duplexer setup = with two service 
monitors and a spectrum analyzer


  No, you will only see the peak and skirts of the generated signal, you need 
to terminate all the duplexer ports with 3db 50 ohm pads and tune for pass 
first, lock those down them tune the reject path

   

  Bottom of first link is a sketch.

  73

  Don W5DK

   

  http://www.repeater-builder.com/wacom/wp6xx-vhf-tuning-instructions.pdf

   

  http://www.repeater-builder.com/antenna/ant-sys-index.html#duplexers

   

   

  From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of 
Joel
  Sent: Thursday, June 26, 2008 10:54 AM
  To: Repeater-Builder@yahoogroups.com
  Subject: [Repeater-Builder] Help! Duplexer setup = with two service monitors 
and a spectrum analyzer

   

  Can someone in the group give me a sketch diagram of the setup, for tuning a 
  duplexer with the following equipment I have?.

  I have two (2) service monitors (Marconi 2955/A), and a spectrum analyzer 
  (Avcom PSA-65A, no built-in tracking generator)

  Q...Will I be able to see the response graph of the duplexer, as when I use 
  a spectrum analyzer with a built-in tracking generator?

  All comments will be appreciated, and set aside for the radio club here 
  archive.

  v44kai.Joel. 


   


--



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  Checked by AVG. 
  Version: 8.0.101 / Virus Database: 270.4.1/1519 - Release Date: 6/25/2008 
4:13 PM

RE: [Repeater-Builder] Reasonably low wind load antenna

[n9wys]

Maybe so, but "break" it in half and have one end swaged  to
insert into the other.  
In fact, isn't that what DB and the other antenna manufacturers do anyway?

Just thinking out loud...

Mark - N9WYS

-Original Message-
From: Repeater-Builder@yahoogroups.com On Behalf Of Dave Gomberg
Sent: Tuesday, June 24, 2008 10:55 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Reasonably low wind load antenna

The shipping on a 20 foot long piece will be awful.   You need a 
local source.   In the Bay Area, there is a non-ferrous metal store 
at Davis and Doolittle in San Leandro.   I got a piece of heavy wall 
2.25" Al there.   Wasn't cheap, but wasn't too bad either ($75?).

At 15:11 6/24/2008, n9wys wrote:
>Doesn't Texas Towers and other such vendors sell heavy-duty aluminum mast
>tubing?  Why not try there?
>
>Mark - N9WYS

Re: [Repeater-Builder] LBI for 19C320523G2 and 19C328763G1

[Gary Glaenzer]

http://www.repeater-builder.com/ge/lbi-library/lbi-30032f.pdf   (19C320523G2)

what is the 19C328763G1 ??

Gary




  - Original Message - 
  From: Camilo So 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Thursday, June 26, 2008 12:03 PM
  Subject: [Repeater-Builder] LBI for 19C320523G2 and 19C328763G1



  Need help to find GE MASTR II the LBI for 19C320523G2 and 19C328763G1, Can't 
find it on Repeater Builder, need the LBI to order or download the manual. 
  Is there a way to search the board number 19C320523G2 to LBI-, this is 
what I need to learn.



  73
  W4CSO

   


--



  No virus found in this incoming message.
  Checked by AVG. 
  Version: 8.0.101 / Virus Database: 270.4.1/1521 - Release Date: 6/26/2008 
11:20 AM

[Repeater-Builder] LBI for 19C320523G2 and 19C328763G1

[Camilo So]

Need help to find GE MASTR II the LBI for 19C320523G2 and 19C328763G1, Can't 
find it on Repeater Builder, need the LBI to order or download the manual. 
Is there a way to search the board number 19C320523G2 to LBI-, this is what 
I need to learn.



73
W4CSO

RE: [Repeater-Builder] Help! Duplexer setup = with two service monitors and a spectrum analyzer

[de W5DK]

No, you will only see the peak and skirts of the generated signal, you need to 
terminate all the duplexer ports with 3db 50 ohm pads and tune for pass first, 
lock those down them tune the reject path

 

Bottom of first link is a sketch.

73

Don W5DK

 

http://www.repeater-builder.com/wacom/wp6xx-vhf-tuning-instructions.pdf

 

http://www.repeater-builder.com/antenna/ant-sys-index.html#duplexers

 

 

From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of 
Joel
Sent: Thursday, June 26, 2008 10:54 AM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Help! Duplexer setup = with two service monitors 
and a spectrum analyzer

 

Can someone in the group give me a sketch diagram of the setup, for tuning a 
duplexer with the following equipment I have?.

I have two (2) service monitors (Marconi 2955/A), and a spectrum analyzer 
(Avcom PSA-65A, no built-in tracking generator)

Q...Will I be able to see the response graph of the duplexer, as when I use 
a spectrum analyzer with a built-in tracking generator?

All comments will be appreciated, and set aside for the radio club here 
archive.

v44kai.Joel. 

 

[Repeater-Builder] Help! Duplexer setup = with two service monitors and a spectrum analyzer

[Joel]

Can someone in the group give me a sketch diagram of the setup, for tuning a 
duplexer with the following equipment I have?.

I have two (2) service monitors (Marconi 2955/A), and a spectrum analyzer 
(Avcom PSA-65A, no built-in tracking generator)

Q...Will I be able to see the response graph of the duplexer, as when I use 
a spectrum analyzer with a built-in tracking generator?

All comments will be appreciated, and set aside for the radio club here 
archive.

v44kai.Joel. 

[Repeater-Builder] Re: Bird Thruline Remote Power Sensor 4E100

[Bob]

Paul:

Are you suggesting that someone might get less-than-perfect goods off
of eBay?  I'm shocked! ;-)

The diodes appear to behave like diodes (as near as one can tell with
just a VOM) and the two different power sensor units I have seem to
present similar voltages for each of their respective ports.  I still
don't quite understand why I read much of anything on reflected
though.  Then again, there's lots I don't understand.

The actual sensor elements appear to be very similar--if not the
same--as the guts of a regular Bird 43 slug.  Likewise, one element
mounts in a reverse fashion from the other, i.e., one "forward", one
"reflected".

Perhaps someone can offer some other insights.

Tnx & 73,
Bob
K5IQ

--- In Repeater-Builder@yahoogroups.com, "Paul Plack" <[EMAIL PROTECTED]> wrote:
>
> They might have been on "FleaBay" because someone blew the internal
diodes?
> 
> 73,
> Paul, AE4KR
> 

Re: {Disarmed} Re: [Repeater-Builder] Antenna mounted near a water tank on wood pole

[Bill Till]

Another factor that I have seen happen is the combination of the direct signal 
radiating from the antenna and the reflected signal bouncing back from the 
metal surface combining out of phase to give a null and resulting in a weird 
pattern effect.  I think you should try to get your antenna well above the tank 
to avoid such an effect.  A careful calculation of distance away from the tank 
to give phase addition would give you a strong directional effect.  No doubt 
antenna modelling software would graph this.

Bill
VE5FN


  - Original Message - 
  From: N0ATH 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Sunday, June 22, 2008 9:26 PM
  Subject: {Disarmed} Re: [Repeater-Builder] Antenna mounted near a water tank 
on wood pole


   

  Hello Joe - I would try to find at least 90 feet of Rohn 25 
  and anchor it to the pole - then mount your antenna on
  the tower and you would be able to have an earth ground,
  a built in ladder, and something to tie your feedline off to.
  I recently bought 210 foot for $180 on the ground - I think
  you would appreciate the accessibility after a few years.
  Just an opinion - Dave / NØATH 73
  - Original Message - 
  From: Joe 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Thursday, June 19, 2008 1:49 PM
  Subject: [Repeater-Builder] Antenna mounted near a water tank on wood pole


  Hello Groupies,

  I had this question posed to me and I am looking for your opinions. The 
  question below has been edited to protect the innocent2 meter 
  repeater..

  73, Joe, K1ike
  
  I have a technical question with which I need assistance 
  repeater has been at the water tower site, with the antennas on the 
  water towerAfter some consideration, the town has requested that 
  we not return to the tower. . They have offered instead to install a 
  seventy foot pole (telephone pole) for our use. The water tower is 
  seventy-eight feet tall at the side, with a dome that adds approximately 
  another five feet. We had mounted the antenna to a pole which adds 
  another five feet. So that means the bottom of the antenna previously 
  was at approximately eighty-eight feet. The telephone pole would be 
  mounted outside of the fence which surrounds the water tower, 
  approximately twenty to forty feet away from the tower. My technical 
  question is this: how much interference or interaction should I expect 
  from an antenna mounted seventy-five (or so) feet high, approximately 
  twenty to fifty feet from a eighty-three foot metal and water 
  (cylindrical) obstruction? And how high would the antenna have to be 
  mounted to avoid any interference/interaction with the water tower?
  =

  Here were my thoughts and reply to the question:

  You would probably suffer from shading in the direction of the water 
  tank from the antenna. If the antenna was 20 feet from the tank and the 
  tank is approximately 40 feet in diameter (not sure of this dimension) 
  you would be blocked for about 90 degrees. That would be in the 
  direction of the water tank. If you increased the distance to 40 feet 
  from the tank, you would block approx. 35 degrees of coverage. (Check 
  my math, that's just a quick guess.)

  So,
  -Yes, you would have some blockage of coverage. My estimates may be 
  overrated. Signal will probably get around the tank, but will not be 
  line-of-site.
  -Moving the telephone pole as far away as possible will minimize the 
  blockage in coverage.
  -I don't think you will see any indications of electrical problems, such 
  as VSWR, in either case.
  -In order to eliminate blockage, your antenna would have to be higher 
  than the top of the water tank
  -Telephone pole installations rarely stay vertical, they usually tilt or 
  the wood bows after time. You would be best to stay with a low gain 
  antenna unless you want to periodically climb the pole 
  a plumb the antenna.
  -Telephone poles are difficult to safely climb. See if they will step 
  it for you with metal pegs. They can start the pegs 15" off the ground 
  so the kids can't climb it. You would bring a ladder when you wanted to 
  climb it. I don't think they have a bucket truck that goes 70+ feet? 
  Who will climb it?
  -When they say "70 foot pole" do they mean installed, or is that the 
  length BEFORE it is installed?
  -Make sure that you use an antenna mount that will be easy to adjust if 
  you have to re-plumb the antenna.
  -Have the telephone pole installed so that the shadow is in an area that 
  is not critical to your coverage. Place it as far from the tank as 
  possible.
  -I don't think that an antenna mounted 70 vs an antenna mounted 88 feet 
  is going to make a great difference. Both heights should clear the 
  treetops. The main problem is going to be the steel tank in one 
  direction.




--



  No virus found

Re: [Repeater-Builder] Feedline Connector Sealant Tape

[n6lrv]

Jim,
silicone tape has been around for decades. Military have been using it to seal 
all types of connections and many have quietly introduced it to the wireless 
industry. There are more makers now (other than 3M) so we're seeing it more and 
more available from suppliers. Properly applied it makes a great weathertight 
seal over connectors and without all the goo of adhesive tapes. Once it bonds 
to itself it can't be unraveled instead you have to cut it off.
Gary

 Jim Cicirello <[EMAIL PROTECTED]> wrote: 
> 
> Hi Guys,
> A cell phone Tower Tech. gave me some Cell-Tape (C-Tape) for weather
> proofing connectors. I used some tonight on a connector and compared
> to Coax Seal or #33 Tape and 3M Sealant this stuff was a pleasure to
> use. The removal also impressed me, it was also quick and clean. I am
> mentioning this product in case you don't know it exists. I would also
> be interested in comments from those who have used it. I don't know
> how long it has been on the market, so I am also interested in
> longevity. Here is the information from the TESSCO Web Site. The
> TESSCO number is 360590.
> 
> 73 JIM  KA2AJH
> 
> 
> Transmission Line Accessories
> Weatherproofing [436-65] 
> 
> RFS C-Tape
> An innovative alternative to traditional butyl rubber sealant tapes.
> CELL-Tape (C-Tape) weather sealant and marking tape is made of clean,
> self-adhesive silicone that fuses firmly to produce UV-protected air-
> and water-tight bonds, all via an easy-on/easy-off mess-free
> application. Multiple color options for easy tower-top cable
> identification are available. CELL-Tape can elongate by three hundred
> percent, stretching tight budgets as well as delivering tight protection.
> 
> * Self-adhesive silicone fuses for an air & water-tight seal.
>   
> 
> * 1" kits contain two 15' rolls.
> 
> * 2" kits contain one 15' roll.
> 
>
> 
>   Product Details for 360590 
> 
> 
> 
> 
> 
> 
> Yahoo! Groups Links
> 
> 
> 

Re: [Repeater-Builder] Feedline Connector Sealant Tape

[Dexter McIntyre W4DEX]

I've never used the C-Tape but I suspect it's the same stuff available 
at marine supply stores called Rescue Tape.

http://www.rescuetape.com/

Dex

Jim Cicirello wrote:
> Hi Guys,
> A cell phone Tower Tech. gave me some Cell-Tape (C-Tape) for weather
> proofing connectors. I used some tonight on a connector and compared
> to Coax Seal or #33 Tape and 3M Sealant this stuff was a pleasure to
> use. The removal also impressed me, it was also quick and clean. I am
> mentioning this product in case you don't know it exists. I would also
> be interested in comments from those who have used it. I don't know
> how long it has been on the market, so I am also interested in
> longevity. Here is the information from the TESSCO Web Site. The
> TESSCO number is 360590.
>
> 73 JIM  KA2AJH
>
>
> Transmission Line Accessories
> Weatherproofing [436-65] 
>
> RFS C-Tape
> An innovative alternative to traditional butyl rubber sealant tapes.
> CELL-Tape (C-Tape) weather sealant and marking tape is made of clean,
> self-adhesive silicone that fuses firmly to produce UV-protected air-
> and water-tight bonds, all via an easy-on/easy-off mess-free
> application. Multiple color options for easy tower-top cable
> identification are available. CELL-Tape can elongate by three hundred
> percent, stretching tight budgets as well as delivering tight protection.
>
> * Self-adhesive silicone fuses for an air & water-tight seal.
>   
>
> * 1" kits contain two 15' rolls.
>
> * 2" kits contain one 15' roll.
>
>
>
>   Product Details for 360590 
>
>
>