Re: [Repeater-Builder] Re: PA heat issues

2005-01-04 Thread Joe

They would strip the gold plating off the leads and
solder directly to the board.  They matched the
transistors into sets.  They also underrated their
amps for long term longevity.  The 900Mhz 250 watt amp
I worked on had 4 separate amps phased together.  One
amp could burn out and you still easily got 250 watts
output from the remaining three.  I spent some
training time at the factory years ago and was
impressed.

Joe  
> --- In Repeater-Builder@yahoogroups.com,
> What did Quintron do to prevent the effects
> described above?
> 
> Laryn K8TVZ





 
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Re: [Repeater-Builder] Mobile Repeaters?

2005-01-04 Thread Joe


--- JOHN MACKEY <[EMAIL PROTECTED]> wrote:
> That seems like a ridiculous idea to put a repeater
> in the comm van.

Not really.  The incident command function may not be
done from the comm van.  The comm van may have simplex
coverage to the units, but the incident commander may
be in a bad Rf location.  The repeater, if used
properly, can be an asset to that person.

Joe




 
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RE: [Repeater-Builder] VX2000U repeater

2005-01-04 Thread Mike Perryman

Only one copy here...
 73
Mike Perryman
www.k5jmp.us

-Original Message-
From: Mathew Quaife [mailto:[EMAIL PROTECTED]
Sent: Tuesday, January 04, 2005 2:36 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] VX2000U repeater



Only getting one back to myself Steve, not sure why your getting three of
them.  Let me know if you get three of these messages.

Mathew

- Original Message -
From: "Steven Passmore" <[EMAIL PROTECTED]>
To: 
Sent: Tuesday, January 04, 2005 10:59 AM
Subject: Re: [Repeater-Builder] VX2000U repeater


>
> Seems I'm getting messages from Mr. Quaife in triplicate, anyone else
having
> this problem?
>
> Steve P.
>
> - Original Message -
> From: "Mathew Quaife" <[EMAIL PROTECTED]>
> To: 
> Sent: Tuesday, January 04, 2005 8:11 AM
> Subject: Re: [Repeater-Builder] VX2000U repeater
>
>
> >
> > I could be mistaking, sometimes things do change, but unless it is a FM
> > station between 88 to 108 Mhz, and the HF Broadcast to public listeners,
> > it
> > is illegal to retransmit any signal other than NWS Alerts, or Amateur
News
> > Bulletins.  So if it is not a General Boradcast for Public use, you
cannot
> > broadcast anything.
> >
> > Mathew
> >
> >
> >
> >>
> >> Ken Arck wrote:
> >>
> >> > At 04:47 AM 1/4/2005 +, you wrote:
> >> >
> >> >
> >> >>The radio will not be 1. used on ham frequencies, it is GMRS and the
> >> >>the
> >> >>scanner would be used to pickup up a business band radio that is a
> > friend of
> >> >>the families on a VHF frequency I am licensed with FCC for GMRS and
he
> > is
> >> >>licensed.
> >> >
> >> >
> >> > <---Are you sure it's legal to mix services like that? I'm not...
> >> >
> >> > Ken
> >>
> >> I was having trouble reading what he said-no, repeating business radio
> >> onto GMRS is NOT legal.
> >> --
> >> Jim Barbour
> >> WD8CHL
> >>
> >>
> >>
> >>
> >>
> >>
> >> Yahoo! Groups Links
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
> >
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>






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Re: [Repeater-Builder] Mobile Repeaters- Another Case History

2005-01-04 Thread Neil McKie


Mathew Quaife wrote:

  ... snip ... 


> Gee! Silly Me, never thought of that, could of had a free antenna. 
> But then we are lucky to have the Ambulance Service as it is. Money 
> got tight for the county, so they cut back an ambulance.  Smart 
> ones took the one out of the center of the county, the heaviest 
> populated.area.  Oh well, politics.
> 
> Mathew 


  I know of one county story ... 

  The county involved decided to save some money by getting rid of 
 their radio technician ... they did it without the niceties of 
 polite discussion.  The union got involved and told the former 
 employee 'Don't say anything to assist the county!' 

  A few months later, the county and the union went to arbitration; 
 the county provided witness, it seemed, was a better witness for the 
 former radio technician than he was for the county. 

  Several months after the technician was long gone, a certain 1000 
 gallon propane tank on a certain radio site went empty ... so, the 
 thermo-electric generator at the same site went dead.  Too bad as 
 it was charging two 8D 'cat' batteries ... which also went dead. 
 When that happened, everything in the county site also went dead 
 ... on a Friday afternoon as the story has been told. 

  Apparently, it took a while for someone to decide what to do next. 
 The direct county operations were not affected as the county didn't 
 usually use any of the radios there ... but mnost of the county 
 ambulance and fire dispatch went dead.  

  I can only guess who was looking at whom to blame for what? 

  The radio technician had already left town. 

  Moral of the story, 'Don't mess with your technician.' 

  When you visit a company, if you really want to know what is going 
 on, ask the secretary.  

  If it is RF and related, ask the technician ... 

  73, 

  Neil McKie - WA6KLA





 
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Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel Element

2005-01-04 Thread Neil McKie


  Good point.  Your L44BBB is a 18 watt tabletop base station with a 
 6907 tube for a final.  Have fun tuning it up.  

  It will not convert well into a repeater as the power supply won't 
 handle it. 

  Neil 

JOHN MACKEY wrote:
> 
> Actually, it is a L44BBB.
> 
> You missed one below, the "L" means base consolette.
> 
> -- Original Message --
> Received: Tue, 04 Jan 2005 12:20:33 PM CST
> From: Neil McKie <[EMAIL PROTECTED]>
> To: Repeater-Builder@yahoogroups.com
> Subject: Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel Element
> 
> >
> >
> >   Is it a 44BBY, 54BBY or 74BBY?
> >
> >   The 44BBY is one chassis group, the 54BBY & 74BBY is the same as
> >  the 44BBY but with the power amplifier attached - which uses a
> >  4CX250B final.
> >
> >   Do you have the manual for it?  If you don't, it can be a long
> >  learning curve.  With a manual, it can be fun.
> >
> >   BTW, there is the earlier manual for it ... and the later manual
> >  which shows certain modifications that make the reliability better.
> >
> >   Also, the associated RT manual tells how to make a repeater out of
> >  the base station.
> >
> >   A 44BBB, 54BBB or 74BBB is the base station changing the last B to
> >  a Y makes it into a repeater.  I deleted the usual first letter
> >  which specifies the cabinet it is in: J74BBY
> >
> >   B = base station cabinet, usually 6 feet tall;
> >   C = Compa Cabinet, about 40-45 inches tall,
> >   J = Weatherproof cabinet, about 5' tall and quite rugged.
> >
> >   The first digit being 4, 5 or 7 is the power output level:
> >
> >   4 = 20 watts out
> >   5 = 60 watts out
> >   7 = 100 watts out
> >   9 = 250 watts out (see below)
> >
> > JOHN MACKEY wrote:
> > >
> > > I've got one of the old 44BBY base stations I've been meaning to
> > > overhaul & put in to service at my work.  (where they can pay the
> > > electric bill to keep it running!)
> >
> >   And heat the building too.
> >
> >   John, this is one fun radio to try to get going.  If you like tubed
> >  equipment, this is a good one for you to get started on.  ;)
> >
> >   For those of you out there wondering why in all of this, the BBY
> >  Series of UHF radios is the second in the list of 450-470 MHz
> >  equipment.  The first, a 44AAY, used a 2C39 driving a 2C39 as the
> >  final giving about 20 watts out - if you were lucky.
> >
> >   If you needed more power, then you upped the plate voltage on the
> >  second 2C39, prayed for the needed 30 watts.  That fed the pair of
> >  4CX250B's in push-pull.
> >
> >   I was called to service one of these things about 30 years ago.  A
> >  certain branch of the federal government had one of these 250 watt
> >  output systems in their office near Pasadena, California.  The
> >  output of this thing fed a rather large grid dish on the roof of
> >  their building - was used as a point to point link - the other end
> >  being not too far away.
> >
> >   Quietly I snickered when I found out what they wanted.  They really
> >  wanted their end of the system completely overhauled and placed back
> >  in service.  No matter of suggestion that they could get something
> >  one tenth in weight / ten times the reliability brand new.
> >
> >   In the end, I had completely retubed the system, a B94AAB base
> >  station, and finally gave up at about 225 watts output.
> >
> >   The radio shop I worked for at the time (Wil will remember this)
> >  didn't have the Bird #43 Wattmeter slug or RF load for this project
> >  so I brought mine from home.
> >
> >   A note to Mike Morris, you probably have all of this in your
> >  Rosetta Stone file ...
> >   http://www.repeater-builder.com/motorola/motorola-suffixes.html
> >
> >
> >   Neil
> >
> >
> > > -- Original Message --
> > > Received: Mon, 03 Jan 2005 11:22:54 PM CST
> > > From: Neil McKie <[EMAIL PROTECTED]>
> > > To: Repeater-Builder@yahoogroups.com
> > > Subject: Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel Element
> > >
> > > >
> > > >
> > > >   True ... I used to service them years ago in southern California.
> > > >
> > > >   I have one almost complete in my garage to add to your collection
> > > >  - I can deliver to your new place in a few days.  (Jan 15th)
> > > >
> > > >   I may have the community repeater panel also for your collection.
> > > >
> > > >   Neil
> > > >
> > > > "[EMAIL PROTECTED]" wrote:
> > > > >
> > > > > Wow - now that's going back a "few" years!
> > > > > LJ
> > > > >
> > > > > Original Message:
> > > > > -
> > > > > From: Neil McKie [EMAIL PROTECTED]
> > > > > Date: Mon, 03 Jan 2005 20:42:17 -0800
> > > > > To: Repeater-Builder@yahoogroups.com
> > > > > Subject: Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel
> Element
> > > > >
> > > > >   Hi Larry,
> > > > >
> > > > >   I believe the TLN1124A Channel Element was used in the 0.0002%
> > > > >  field conversion on the J74BBY base and repeater station.  I'll
> > > > >  have to look it up to be certain.
> > > > >
> > > > >   H

Re: [Repeater-Builder] Mobile Repeaters?

2005-01-04 Thread Neil McKie


  This discussion is getting interesting ...  :) 

JOHN MACKEY wrote:
> 
> I would think that if you are talking about *CORRECTLY* tuning the 
> Motran for continous duty that you would also be watching the 
> current meter for the power supply feeding the 43MSN, looking for 
> minimum current at the same time as watching for max RF power out. 

  Also true. 

 
> I've never found either the LLT or the MSN motrans to be very 
> diffult to tune. (although the LLT requires being a little more 
> careful)  Cetainly the MSN was a far better radio than the LLT. 

  There are three versions of the LLT transmitters: 

  U41LLT
  U51LLT
  U43LLT 

  The U41LLT uses a pair of M9116 PA transistors if I remember 
 correctly and put out 30 watts of power. 

  The U51LLT uses four M9116 PA transistors = 50 watts output. 

  The U43LLT is basically a U51LLT with a varactor tripler on the 
 output = 30 watts output. 
 

> For tuning that can be a little tricky to do *CORRECTLY*, I 
> suggesting attempting to tune of the of following transmitters:
> 
> 1. UHF GE-Mastr Pro 

  The early or later model? 


> 2. UHF Motorola HT-200 

  Quite a dream to tune ... if you like frustration ... 


> 3. 150 MHz GE TPL 

  Ah ha !!!  The ... Toilet Paper Line ... 


  73, 
  Neil 



> 
> -- Original Message --
> Received: Tue, 04 Jan 2005 12:05:43 PM CST
> From: Neil McKie <[EMAIL PROTECTED]>
> SNIP
> >   After inserting the Channel Element on the correct frequency, and
> >  tuning the exciter and following multiplier stages according to the
> >  manual, you just leave it keyed and tune for maximum output power
> >  on your Bird Wattmeter.  Next?
> SNIP
> 
> 
> Yahoo! Groups Links
> 
> 
> 
>





 
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Re: [Repeater-Builder] VX2000U repeater

2005-01-04 Thread Neil McKie


  Not yet ... 

  Neil 

Steven Passmore wrote:
> 
> Seems I'm getting messages from Mr. Quaife in triplicate, anyone 
> else having this problem? 
> 
> Steve P.
> 
> - Original Message -
> From: "Mathew Quaife" <[EMAIL PROTECTED]>
> To: 
> Sent: Tuesday, January 04, 2005 8:11 AM
> Subject: Re: [Repeater-Builder] VX2000U repeater
> 
> >
> > I could be mistaking, sometimes things do change, but unless it is a FM
> > station between 88 to 108 Mhz, and the HF Broadcast to public listeners,
> > it
> > is illegal to retransmit any signal other than NWS Alerts, or Amateur News
> > Bulletins.  So if it is not a General Boradcast for Public use, you cannot
> > broadcast anything.
> >
> > Mathew
> >
> >
> >
> >>
> >> Ken Arck wrote:
> >>
> >> > At 04:47 AM 1/4/2005 +, you wrote:
> >> >
> >> >
> >> >>The radio will not be 1. used on ham frequencies, it is GMRS and the
> >> >>the
> >> >>scanner would be used to pickup up a business band radio that is a
> > friend of
> >> >>the families on a VHF frequency I am licensed with FCC for GMRS and he
> > is
> >> >>licensed.
> >> >
> >> >
> >> > <---Are you sure it's legal to mix services like that? I'm not...
> >> >
> >> > Ken
> >>
> >> I was having trouble reading what he said-no, repeating business radio
> >> onto GMRS is NOT legal.
> >> --
> >> Jim Barbour
> >> WD8CHL
> >>
> >>
> >>
> >>
> >>
> >>
> >> Yahoo! Groups Links
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
> >
> 
> 
> Yahoo! Groups Links
> 
> 
> 
>





 
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Re: [Repeater-Builder] VX2000U repeater

2005-01-04 Thread [EMAIL PROTECTED]


Yes I am !!!


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[Repeater-Builder] Motorola Channel Steering

2005-01-04 Thread Marco

Can anyone explain me how to configure a remote radio to the Channel 
Steering?

I have a motorola GM, the european equivalent of CDM
I don't know how configure the I/O output and input line, i read about a N 
bit, but what is it?

Thanks Marco





 
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[Repeater-Builder] Motorola SSR-406

2005-01-04 Thread R. Dahl

I have three old SSR-406 wideband link radios from the RCMP.
The vintage is about 1970.
The exciter is vhf which goes to a Micor style tripler and 12 watt
PA with circulator.  I am thinking of stripping the radios from the
bulky rackmounts for easier storage which would ruin the interconnect
cabling, so if anyone has a burning desire to play with such a thing 
before they are scrapped for parts, then speak up.  Or maybe someone
could comment on the possibility of ATV use.

Ross 
ve6ars







 
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Re: [Repeater-Builder] Mobile Repeaters- Another Case History

2005-01-04 Thread Bob Dengler

At 1/4/2005 05:33 AM, you wrote:

>Very well stated.

Agreed.

>  Our county just bought such a trailer, and they put a man
>in charge of this unit that believes he knows everything about radio
>communications, to the point that he argued with me for nearly an hour when
>he told me that our Hustler G7 antenna at our local Ambulance Service was no
>good becuase he checked it with a continuity checker and it showed a dead
>short.  (This was after a lightning storm fried the radio).  As I tried to
>explained to him that it would show a short as that is the design of the
>antenna, he became so flustard that he ended the conversation with "That is
>the Wrong Antenna for This Radio", VHF Radio and a High Band VHF Antenna, 50
>Ohms, figure it out, but my Bird Watt Meter Was wrong, as well as my MFJ
>Analyzer, yet the antenna receives and transmits just fine.

Don't argue with the man.  Tell him "Yup, you're right.  Mind if I take 
that bad antenna down & throw it away for you?"

;)

Bob






 
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Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel Element

2005-01-04 Thread [EMAIL PROTECTED]


  MOTOROLA MICOR REPEATER ELEMENTS ONE PAIR Item number: 5741949568 

are these the ones you are looking for ?/?


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Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel Element

2005-01-04 Thread JOHN MACKEY

Anyone who has worked for the government will easily understand this
situation.  Often times it is FAR easier & quicker to get approval for costs
of repairing equipment already owned/existing when compared to the efforts it
takes to get approval & secure funding for purchasing something new.  (The
fact that buying new may be cheaper or better makes little difference)

-- Original Message --
Received: Tue, 04 Jan 2005 12:20:33 PM CST
From: Neil McKie <[EMAIL PROTECTED]>
SNIP
>   Quietly I snickered when I found out what they wanted.  They really 
>  wanted their end of the system completely overhauled and placed back 
>  in service.  No matter of suggestion that they could get something 
>  one tenth in weight / ten times the reliability brand new. 
> 
>   In the end, I had completely retubed the system, a B94AAB base 
>  station, and finally gave up at about 225 watts output. 
SNIP






 
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Re: [Repeater-Builder] SINAD measurements

2005-01-04 Thread Bob Dengler

At 1/3/2005 09:19 PM, you wrote:


>I am curious to know what everyone on the list uses to perform SINAD
>measurements? Anyone doing it without a service monitor? If so, what
>do you use for a 1KHz. notch? Can anyone recommend a design to
>construct a deep notch? I can only get about 20 dB through my Datong
>filter.
>
>Thanks,
>
>Scott Madison, WN1B

There's shareware at  called "Analyzer 2000" that 
has SINAD capability.  However, I've had problems getting accurate numbers 
out of it.  It seems to be highly dependent on the size of the FFT.  I 
suspect the total noise voltage isn't being properly calculated.

I'm working on a similar application.  If I could get a correct definition 
of SINAD then maybe I could implement it myself.

Bob NO6B






 
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Re: [Repeater-Builder] Hot air rework station

2005-01-04 Thread DCFluX

Check out www.web-tronics.com  They have a cheap hot air station that
I have worked with.  Also if you are really cheap you can buy one of
the nozzels for the webtronics unit and attach it to a milwakee hot
air blower with a rheostadt.  Although you might need to find solder
paste to make decent use of SMT work.


On Tue, 04 Jan 2005 13:51:43 -0500, Glenn Little WB4UIV
<[EMAIL PROTECTED]> wrote:
> 
> Use a hot air gun. You might need to make some special nozzles to get the
> hot air where you want it and keep it away from other parts. I have found
> that air dams made of cardboard work to keep the hot air away form other 
> parts.
> 
> Remember, when dealing with solder on ceramic, always use silver bearing
> solder. The non silver bearing solder will leach the metalization from the
> ceramic, breaking down the bond.
> 
> 73
> Glenn
> WB4UIV
> 
> 
> At 01:41 PM 01/04/05, you wrote:
> 
> >
> >
> >It's become apparent to me that my days of fixing circuit board 
> > 
> >
> >board problems with my fine point Weller and solder wick are long past.
> >
> >I have a Spectra that needs a few surface mount components replaced.
> >
> >I may also need to reflow some other devices. Looked on Ebay, hot air
> >
> >rework stations go from cheap to big bucks. Can anybody recommend
> >
> >something affordable new or used for light duty use?
> >
> >   
> > Thanks,
> >
> >
> >Ken
> >
> >
> >
> >
> >
> >
> >
> >
> >--
> >Yahoo! Groups Links
> >* To visit your group on the web, go to:
> >* 
> > http://groups.yahoo.com/group/Repeater-Builder/
> >
> >*
> >* To unsubscribe from this group, send an email to:
> >*
> > [EMAIL PROTECTED]
> >
> >*
> >* Your use of Yahoo! Groups is subject to the 
> > Yahoo! Terms of Service.
> 
> 
> Yahoo! Groups Links
> 
> 
> 
> 
>




 
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Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel Element

2005-01-04 Thread Neil McKie


  Yup, I do agree. 

  Neil 

JOHN MACKEY wrote:
> 
> Anyone who has worked for the government will easily understand 
> this situation.  Often times it is FAR easier & quicker to get 
> approval for costs of repairing equipment already owned/existing 
> when compared to the efforts it takes to get approval & secure 
> funding for purchasing something new.  (The fact that buying new 
> may be cheaper or better makes little difference)
> 
> -- Original Message --
> Received: Tue, 04 Jan 2005 12:20:33 PM CST
> From: Neil McKie <[EMAIL PROTECTED]>
> SNIP
> >   Quietly I snickered when I found out what they wanted.  They really
> >  wanted their end of the system completely overhauled and placed back
> >  in service.  No matter of suggestion that they could get something
> >  one tenth in weight / ten times the reliability brand new.
> >
> >   In the end, I had completely retubed the system, a B94AAB base
> >  station, and finally gave up at about 225 watts output.
> SNIP
> 
> 
> Yahoo! Groups Links
> 
> 
> 
>





 
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Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel Element

2005-01-04 Thread Neil McKie


  ... cars ... that means more than one? 

  Neil 

"[EMAIL PROTECTED]" wrote:
> 
> Thanks, but I gave up using BBY Repeaters back in the 70's. I'm 
> already trying to get rid of my "collection" (of MICOR, MASTRII, 
> MSR-2000 and MSF-5000 Repeaters) as it is. I'd like to have my 
> garage back for storing cars! 
> LJ
> 
> Original Message:
> -
> From: Neil McKie [EMAIL PROTECTED]
> Date: Mon, 03 Jan 2005 21:21:10 -0800
> To: Repeater-Builder@yahoogroups.com
> Subject: Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel Element
> 
>   True ... I used to service them years ago in southern California.
> 
>   I have one almost complete in my garage to add to your collection
>  - I can deliver to your new place in a few days.  (Jan 15th)
> 
>   I may have the community repeater panel also for your collection.
> 
>   Neil
> 
> "[EMAIL PROTECTED]" wrote:
> >
> > Wow - now that's going back a "few" years!
> > LJ
> >
> > Original Message:
> > -
> > From: Neil McKie [EMAIL PROTECTED]
> > Date: Mon, 03 Jan 2005 20:42:17 -0800
> > To: Repeater-Builder@yahoogroups.com
> > Subject: Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel Element
> >
> >   Hi Larry,
> >
> >   I believe the TLN1124A Channel Element was used in the 0.0002%
> >  field conversion on the J74BBY base and repeater station.  I'll
> >  have to look it up to be certain.
> >
> >   Hope this helps,
> >
> >   Neil - WA6KLA
> >
> > "[EMAIL PROTECTED]" wrote:
> > >
> > > I recently picked up a UHF MICOR 75-Watt Repeater which has the correct
> > > KXN1024A Receive Channel Element, but needs the KXN1052A Transmit
> Channel
> > > Element. It came with a gold-colored TLN1124A Element in the
> transmitter,
> > > which I don't believe was intended to go in a MICOR - I haven't been
> able
> > > to find that numbered element in any of my MICOR manuals. I think
> someone
> > > just stuck it in the transmitter because it was a UHF Transmit Channel
> > > Element and it physically fit in the exciter.
> > >
> > > Anyone have a spare KXN1052A?
> > >
> > > Thanks,
> > > Larry
> > >
> > > 
> > > mail2web - Check your email from the web at
> > > http://mail2web.com/ .
> > >
> > >
> > > Yahoo! Groups Links
> > >
> > >
> > >
> > >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> > 
> > mail2web - Check your email from the web at
> > http://mail2web.com/ .
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> 
> 
> Yahoo! Groups Links
> 
> 
> 
> 
> mail2web - Check your email from the web at
> http://mail2web.com/ .
> 
> 
> Yahoo! Groups Links
> 
> 
> 
>





 
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Re: [Repeater-Builder] Re: [Motorola] MSR2000 PA Transistors

2005-01-04 Thread Neil McKie


  At Pacificon, that is usually the case.  I have been somewhat 
 lucky in the past when I did find something there ... then it's 
 a 12 hour or so drive back home.  Worth the drive?  Not so for 
 only obtaining parts - but if your system is dead or dying, then 
 yes. 

  I do enjoy attending Pacificon as I know a lot of people who 
 attend - this is my chance to visit with them 

  For those of you who don't know about Pacificon:  
http://www.pacificon.org 

Steven Passmore wrote:
> 
> >  Get down to your local ham swapmeet and start catching up.  Of
> 
> Hmm...  Last Swap meet I went to (Pacificon) was mostly boat anchors and
> parts for them.  about the only <50 Mhz stuff was some tband mastr II's.
> I did find deal on a piece of heliax but other than that, pretty useless.
> 
> Anyone know if there are any swap meets in the SF bay area that have
> repeater goodies?
> 
> Steve P.
> 
> 
> Yahoo! Groups Links
> 
> 
> 
>





 
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Re: [Repeater-Builder] Mobile Repeaters?

2005-01-04 Thread JOHN MACKEY

I might also add number four of:

Moto T44MSN/Mark XII

-- Original Message --
Received: Tue, 04 Jan 2005 01:25:32 PM CST
From: JOHN MACKEY <[EMAIL PROTECTED]>
 
> For tuning that can be a little tricky to do *CORRECTLY*, I suggesting
> attempting to tune of the of following transmitters:
> 
> 1. UHF GE-Mastr Pro
> 2. UHF Motorola HT-200
> 3. 150 MHz GE TPL






 
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Re: [Repeater-Builder] Mobile Repeaters?

2005-01-04 Thread JOHN MACKEY

I would think that if you are talking about *CORRECTLY* tuning the Motran for
continous duty that you would also be watching the current meter for the power
supply feeding the 43MSN, looking for minimum current at the same time as
watching for max RF power out.

I've never found either the LLT or the MSN motrans to be very diffult to tune.
 (although the LLT requires being a little more careful)  Cetainly the MSN was
a far better radio than the LLT.

For tuning that can be a little tricky to do *CORRECTLY*, I suggesting
attempting to tune of the of following transmitters:

1. UHF GE-Mastr Pro
2. UHF Motorola HT-200
3. 150 MHz GE TPL

-- Original Message --
Received: Tue, 04 Jan 2005 12:05:43 PM CST
From: Neil McKie <[EMAIL PROTECTED]>
SNIP
>   After inserting the Channel Element on the correct frequency, and 
>  tuning the exciter and following multiplier stages according to the 
>  manual, you just leave it keyed and tune for maximum output power 
>  on your Bird Wattmeter.  Next?  
SNIP






 
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Re: [Repeater-Builder] VX2000U repeater

2005-01-04 Thread Steven Passmore

Seems I'm getting messages from Mr. Quaife in triplicate, anyone else having 
this problem?

Steve P.

- Original Message - 
From: "Mathew Quaife" <[EMAIL PROTECTED]>
To: 
Sent: Tuesday, January 04, 2005 8:11 AM
Subject: Re: [Repeater-Builder] VX2000U repeater


>
> I could be mistaking, sometimes things do change, but unless it is a FM
> station between 88 to 108 Mhz, and the HF Broadcast to public listeners, 
> it
> is illegal to retransmit any signal other than NWS Alerts, or Amateur News
> Bulletins.  So if it is not a General Boradcast for Public use, you cannot
> broadcast anything.
>
> Mathew
>
>
>
>>
>> Ken Arck wrote:
>>
>> > At 04:47 AM 1/4/2005 +, you wrote:
>> >
>> >
>> >>The radio will not be 1. used on ham frequencies, it is GMRS and the 
>> >>the
>> >>scanner would be used to pickup up a business band radio that is a
> friend of
>> >>the families on a VHF frequency I am licensed with FCC for GMRS and he
> is
>> >>licensed.
>> >
>> >
>> > <---Are you sure it's legal to mix services like that? I'm not...
>> >
>> > Ken
>>
>> I was having trouble reading what he said-no, repeating business radio
>> onto GMRS is NOT legal.
>> --
>> Jim Barbour
>> WD8CHL
>>
>>
>>
>>
>>
>>
>> Yahoo! Groups Links
>>
>>
>>
>>
>>
>>
>>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>
> 





 
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[Repeater-Builder] pa repair soldering

2005-01-04 Thread skipp025


Answered per a direct Email question: 

I use various combinations of solder during 
pa repairs.

Standard 60/40 solder

Two or three types of Silver Solder 
(much higher melting point) 

Eutecrod 157 solder. 

skipp 
www.radiowrench.com/sonic 

> > I was also running an MSR2000 (albeit on UHF) and 
> > I keep getting a failure at the harmonic filter 
> > on the antenna output side.  (Kept melting the 
> > connection.)

> This is a very common problem, there is a fix. 







 
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Re: [Repeater-Builder] Re: VX2000U repeater

2005-01-04 Thread Mathew Quaife

Yep, you are right on that one Al, forgot about the NASA program.  Thanks.

Mathew

- Original Message -
From: "Al Wolfe" <[EMAIL PROTECTED]>
To: 
Sent: Tuesday, January 04, 2005 11:51 AM
Subject: [Repeater-Builder] Re: VX2000U repeater


>
> Actually, amateurs have been allowed to rebroadcast NASA Select for
many
> years. They even gave an exemption to allow the music that NASA plays from
> time to time.
>
> Al, K9SI
>
> '   Only exception to that one is severe weather alerts, and if I am not
> 'mistaking, there is a time limit on that as well as to how long it can be
> 'transmitted.
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>





 
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[Repeater-Builder] Re: VX2000U repeater

2005-01-04 Thread Al Wolfe

Actually, amateurs have been allowed to rebroadcast NASA Select for many 
years. They even gave an exemption to allow the music that NASA plays from 
time to time.

Al, K9SI

'   Only exception to that one is severe weather alerts, and if I am not
'mistaking, there is a time limit on that as well as to how long it can be
'transmitted.
 





 
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Re: [Repeater-Builder] VX2000U repeater

2005-01-04 Thread Mathew Quaife

Only getting one back to myself Steve, not sure why your getting three of
them.  Let me know if you get three of these messages.

Mathew

- Original Message -
From: "Steven Passmore" <[EMAIL PROTECTED]>
To: 
Sent: Tuesday, January 04, 2005 10:59 AM
Subject: Re: [Repeater-Builder] VX2000U repeater


>
> Seems I'm getting messages from Mr. Quaife in triplicate, anyone else
having
> this problem?
>
> Steve P.
>
> - Original Message -
> From: "Mathew Quaife" <[EMAIL PROTECTED]>
> To: 
> Sent: Tuesday, January 04, 2005 8:11 AM
> Subject: Re: [Repeater-Builder] VX2000U repeater
>
>
> >
> > I could be mistaking, sometimes things do change, but unless it is a FM
> > station between 88 to 108 Mhz, and the HF Broadcast to public listeners,
> > it
> > is illegal to retransmit any signal other than NWS Alerts, or Amateur
News
> > Bulletins.  So if it is not a General Boradcast for Public use, you
cannot
> > broadcast anything.
> >
> > Mathew
> >
> >
> >
> >>
> >> Ken Arck wrote:
> >>
> >> > At 04:47 AM 1/4/2005 +, you wrote:
> >> >
> >> >
> >> >>The radio will not be 1. used on ham frequencies, it is GMRS and the
> >> >>the
> >> >>scanner would be used to pickup up a business band radio that is a
> > friend of
> >> >>the families on a VHF frequency I am licensed with FCC for GMRS and
he
> > is
> >> >>licensed.
> >> >
> >> >
> >> > <---Are you sure it's legal to mix services like that? I'm not...
> >> >
> >> > Ken
> >>
> >> I was having trouble reading what he said-no, repeating business radio
> >> onto GMRS is NOT legal.
> >> --
> >> Jim Barbour
> >> WD8CHL
> >>
> >>
> >>
> >>
> >>
> >>
> >> Yahoo! Groups Links
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
> >
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>





 
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Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel Element

2005-01-04 Thread JOHN MACKEY

Actually, it is a L44BBB.

You missed one below, the "L" means base consolette.

-- Original Message --
Received: Tue, 04 Jan 2005 12:20:33 PM CST
From: Neil McKie <[EMAIL PROTECTED]>
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel Element

> 
> 
>   Is it a 44BBY, 54BBY or 74BBY? 
> 
>   The 44BBY is one chassis group, the 54BBY & 74BBY is the same as 
>  the 44BBY but with the power amplifier attached - which uses a 
>  4CX250B final. 
> 
>   Do you have the manual for it?  If you don't, it can be a long 
>  learning curve.  With a manual, it can be fun. 
> 
>   BTW, there is the earlier manual for it ... and the later manual 
>  which shows certain modifications that make the reliability better. 
> 
>   Also, the associated RT manual tells how to make a repeater out of 
>  the base station. 
> 
>   A 44BBB, 54BBB or 74BBB is the base station changing the last B to 
>  a Y makes it into a repeater.  I deleted the usual first letter 
>  which specifies the cabinet it is in: J74BBY 
> 
>   B = base station cabinet, usually 6 feet tall;
>   C = Compa Cabinet, about 40-45 inches tall, 
>   J = Weatherproof cabinet, about 5' tall and quite rugged. 
> 
>   The first digit being 4, 5 or 7 is the power output level:
> 
>   4 = 20 watts out
>   5 = 60 watts out
>   7 = 100 watts out
>   9 = 250 watts out (see below) 
> 
> JOHN MACKEY wrote:
> > 
> > I've got one of the old 44BBY base stations I've been meaning to 
> > overhaul & put in to service at my work.  (where they can pay the 
> > electric bill to keep it running!) 
> 
>   And heat the building too. 
> 
>   John, this is one fun radio to try to get going.  If you like tubed 
>  equipment, this is a good one for you to get started on.  ;) 
> 
>   For those of you out there wondering why in all of this, the BBY 
>  Series of UHF radios is the second in the list of 450-470 MHz 
>  equipment.  The first, a 44AAY, used a 2C39 driving a 2C39 as the 
>  final giving about 20 watts out - if you were lucky. 
> 
>   If you needed more power, then you upped the plate voltage on the
>  second 2C39, prayed for the needed 30 watts.  That fed the pair of 
>  4CX250B's in push-pull. 
> 
>   I was called to service one of these things about 30 years ago.  A 
>  certain branch of the federal government had one of these 250 watt 
>  output systems in their office near Pasadena, California.  The 
>  output of this thing fed a rather large grid dish on the roof of 
>  their building - was used as a point to point link - the other end 
>  being not too far away.  
> 
>   Quietly I snickered when I found out what they wanted.  They really 
>  wanted their end of the system completely overhauled and placed back 
>  in service.  No matter of suggestion that they could get something 
>  one tenth in weight / ten times the reliability brand new. 
> 
>   In the end, I had completely retubed the system, a B94AAB base 
>  station, and finally gave up at about 225 watts output. 
> 
>   The radio shop I worked for at the time (Wil will remember this) 
>  didn't have the Bird #43 Wattmeter slug or RF load for this project 
>  so I brought mine from home. 
> 
>   A note to Mike Morris, you probably have all of this in your 
>  Rosetta Stone file ...  
>   http://www.repeater-builder.com/motorola/motorola-suffixes.html 
> 
> 
>   Neil 
> 
>  
> > -- Original Message --
> > Received: Mon, 03 Jan 2005 11:22:54 PM CST
> > From: Neil McKie <[EMAIL PROTECTED]>
> > To: Repeater-Builder@yahoogroups.com
> > Subject: Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel Element
> > 
> > >
> > >
> > >   True ... I used to service them years ago in southern California.
> > >
> > >   I have one almost complete in my garage to add to your collection
> > >  - I can deliver to your new place in a few days.  (Jan 15th)
> > >
> > >   I may have the community repeater panel also for your collection.
> > >
> > >   Neil
> > >
> > > "[EMAIL PROTECTED]" wrote:
> > > >
> > > > Wow - now that's going back a "few" years!
> > > > LJ
> > > >
> > > > Original Message:
> > > > -
> > > > From: Neil McKie [EMAIL PROTECTED]
> > > > Date: Mon, 03 Jan 2005 20:42:17 -0800
> > > > To: Repeater-Builder@yahoogroups.com
> > > > Subject: Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel
Element
> > > >
> > > >   Hi Larry,
> > > >
> > > >   I believe the TLN1124A Channel Element was used in the 0.0002%
> > > >  field conversion on the J74BBY base and repeater station.  I'll
> > > >  have to look it up to be certain.
> > > >
> > > >   Hope this helps,
> > > >
> > > >   Neil - WA6KLA
> > > >
> > > > "[EMAIL PROTECTED]" wrote:
> > > > >
> > > > > I recently picked up a UHF MICOR 75-Watt Repeater which has the
correct
> > > > > KXN1024A Receive Channel Element, but needs the KXN1052A Transmit
> > Channel
> > > > > Element. It came with a gold-colored TLN1124A Element in the
> > transmitter,
> > > > > which I don't believe was intended to go in 

[Repeater-Builder] Over stock

2005-01-04 Thread russ






Hello All,
I had lunch with Ed Cook, W3ERC today.
He is the owner of Cook Towers. He told
me he has 3 of the UHF Kenwood TKR-850's
that he would like to part with. They are not the ver. two but the TKR-850. 
They have new warrantees and so on. If any one has need of one please give them 
a call direct. 877-992-2665
Just passing along what should be a good deal if any one has need of any of 
these repeaters.
 
***NO I DO NOT HAVE ANY THING TO DO WITH COOK TOWERS. JUST PASSING A 
MSG***
 
Very best of 73,
Russ, W3CH
Trustee, Metro-Comm, INC
W3PS repeater system.
 
 
Sincerely,Russ Stafford, EE,PE.GROL, PG-GB-01751.HAM, 
W3CH.GMRS, WPYK-254.













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Re: [Repeater-Builder] Hot air rework station

2005-01-04 Thread Glenn Little WB4UIV

Use a hot air gun. You might need to make some special nozzles to get the 
hot air where you want it and keep it away from other parts. I have found 
that air dams made of cardboard work to keep the hot air away form other parts.

Remember, when dealing with solder on ceramic, always use silver bearing 
solder. The non silver bearing solder will leach the metalization from the 
ceramic, breaking down the bond.

73
Glenn
WB4UIV



At 01:41 PM 01/04/05, you wrote:

>
>
>It's become apparent to me that my days of fixing circuit board 
> 
>
>board problems with my fine point Weller and solder wick are long past.
>
>I have a Spectra that needs a few surface mount components replaced.
>
>I may also need to reflow some other devices. Looked on Ebay, hot air
>
>rework stations go from cheap to big bucks. Can anybody recommend
>
>something affordable new or used for light duty use?
>
>   Thanks,
>
> 
>Ken
>
>
>
>
>
>
>
>
>--
>Yahoo! Groups Links
>* To visit your group on the web, go to:
>* 
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>
>*
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[Repeater-Builder] Hot air rework station

2005-01-04 Thread KENL







   
   It’s become apparent to me that my days 
of fixing circuit board 
board problems with 
my fine point Weller and solder wick are long past.
I have a Spectra 
that needs a few surface mount components replaced. 
I may also need to 
reflow some other devices. Looked on Ebay, hot air 
rework stations go 
from cheap to big bucks. Can anybody recommend
something affordable 
new or used for light duty use?
  
Thanks,
    
Ken  













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[Repeater-Builder] FS: Crank up Tower

2005-01-04 Thread safari_tim




I have a TRI-Ex crank up tower for sale.  It has a model number of MW-35 on the data plate.  Which probably means its a 35'.
 
I recently helped a fellow ham remove this from his house as they were selling it and he did not want it to hinder the sale.  So it is in excellent working order.
 
It comes complete with the hinged base mounting plate, and hand crank cabling system.
 
The lower section measure just under 20'.
 
The tower is already down and ready to be picked up in Northern CA.
 
Pick up ONLY.  You must have a vehicle or trailer capable of hauling this tower.
 
Asking $350 OBO.
 
Please reply off list to [EMAIL PROTECTED] 
 
Thanks.
---Tim 













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[Repeater-Builder] Unknown Filter

2005-01-04 Thread ve3iny


Going through a box of old stuff,  I've come across a 4 cavity mobile 
duplexer similar in construction to a Sinclair MR-354 (4 cavity 
UHF),  marked with what looks like Motorola TFE6070A (not sure on the 
7 - may be a 3).

Anyone one know what range this duplexer is designed to cover ?

Please advise ...

Bob







 
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Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel Element

2005-01-04 Thread Neil McKie


  Is it a 44BBY, 54BBY or 74BBY? 

  The 44BBY is one chassis group, the 54BBY & 74BBY is the same as 
 the 44BBY but with the power amplifier attached - which uses a 
 4CX250B final. 

  Do you have the manual for it?  If you don't, it can be a long 
 learning curve.  With a manual, it can be fun. 

  BTW, there is the earlier manual for it ... and the later manual 
 which shows certain modifications that make the reliability better. 

  Also, the associated RT manual tells how to make a repeater out of 
 the base station. 

  A 44BBB, 54BBB or 74BBB is the base station changing the last B to 
 a Y makes it into a repeater.  I deleted the usual first letter 
 which specifies the cabinet it is in: J74BBY 

  B = base station cabinet, usually 6 feet tall;
  C = Compa Cabinet, about 40-45 inches tall, 
  J = Weatherproof cabinet, about 5' tall and quite rugged. 

  The first digit being 4, 5 or 7 is the power output level:

  4 = 20 watts out
  5 = 60 watts out
  7 = 100 watts out
  9 = 250 watts out (see below) 

JOHN MACKEY wrote:
> 
> I've got one of the old 44BBY base stations I've been meaning to 
> overhaul & put in to service at my work.  (where they can pay the 
> electric bill to keep it running!) 

  And heat the building too. 

  John, this is one fun radio to try to get going.  If you like tubed 
 equipment, this is a good one for you to get started on.  ;) 

  For those of you out there wondering why in all of this, the BBY 
 Series of UHF radios is the second in the list of 450-470 MHz 
 equipment.  The first, a 44AAY, used a 2C39 driving a 2C39 as the 
 final giving about 20 watts out - if you were lucky. 

  If you needed more power, then you upped the plate voltage on the
 second 2C39, prayed for the needed 30 watts.  That fed the pair of 
 4CX250B's in push-pull. 

  I was called to service one of these things about 30 years ago.  A 
 certain branch of the federal government had one of these 250 watt 
 output systems in their office near Pasadena, California.  The 
 output of this thing fed a rather large grid dish on the roof of 
 their building - was used as a point to point link - the other end 
 being not too far away.  

  Quietly I snickered when I found out what they wanted.  They really 
 wanted their end of the system completely overhauled and placed back 
 in service.  No matter of suggestion that they could get something 
 one tenth in weight / ten times the reliability brand new. 

  In the end, I had completely retubed the system, a B94AAB base 
 station, and finally gave up at about 225 watts output. 

  The radio shop I worked for at the time (Wil will remember this) 
 didn't have the Bird #43 Wattmeter slug or RF load for this project 
 so I brought mine from home. 

  A note to Mike Morris, you probably have all of this in your 
 Rosetta Stone file ...  
  http://www.repeater-builder.com/motorola/motorola-suffixes.html 


  Neil 

 
> -- Original Message --
> Received: Mon, 03 Jan 2005 11:22:54 PM CST
> From: Neil McKie <[EMAIL PROTECTED]>
> To: Repeater-Builder@yahoogroups.com
> Subject: Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel Element
> 
> >
> >
> >   True ... I used to service them years ago in southern California.
> >
> >   I have one almost complete in my garage to add to your collection
> >  - I can deliver to your new place in a few days.  (Jan 15th)
> >
> >   I may have the community repeater panel also for your collection.
> >
> >   Neil
> >
> > "[EMAIL PROTECTED]" wrote:
> > >
> > > Wow - now that's going back a "few" years!
> > > LJ
> > >
> > > Original Message:
> > > -
> > > From: Neil McKie [EMAIL PROTECTED]
> > > Date: Mon, 03 Jan 2005 20:42:17 -0800
> > > To: Repeater-Builder@yahoogroups.com
> > > Subject: Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel Element
> > >
> > >   Hi Larry,
> > >
> > >   I believe the TLN1124A Channel Element was used in the 0.0002%
> > >  field conversion on the J74BBY base and repeater station.  I'll
> > >  have to look it up to be certain.
> > >
> > >   Hope this helps,
> > >
> > >   Neil - WA6KLA
> > >
> > > "[EMAIL PROTECTED]" wrote:
> > > >
> > > > I recently picked up a UHF MICOR 75-Watt Repeater which has the correct
> > > > KXN1024A Receive Channel Element, but needs the KXN1052A Transmit
> Channel
> > > > Element. It came with a gold-colored TLN1124A Element in the
> transmitter,
> > > > which I don't believe was intended to go in a MICOR - I haven't been
> able
> > > > to find that numbered element in any of my MICOR manuals. I think
> someone
> > > > just stuck it in the transmitter because it was a UHF Transmit Channel
> > > > Element and it physically fit in the exciter.
> > > >
> > > > Anyone have a spare KXN1052A?
> > > >
> > > > Thanks,
> > > > Larry
> > > >
> > > > 
> > > > mail2web - Check your email from the web at
> > > > http://mail2web.com/ .
> > > >
> > > >
> > > > Yahoo! Groups Links
> > > >
> 

Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel Element

2005-01-04 Thread Neil McKie


  I believe you can use the KXN1019A or B ... is the same but the 
 KXN1052 is 3 times more accurate.  

  Neil 

Kevin Custer wrote:
> 
> [EMAIL PROTECTED] wrote:
> 
> >I recently picked up a UHF MICOR 75-Watt Repeater which has the correct
> >KXN1024A Receive Channel Element, but needs the KXN1052A Transmit Channel
> >Element. It came with a gold-colored TLN1124A Element in the transmitter,
> >which I don't believe was intended to go in a MICOR - I haven't been able
> >to find that numbered element in any of my MICOR manuals. I think someone
> >just stuck it in the transmitter because it was a UHF Transmit Channel
> >Element and it physically fit in the exciter.
> >
> >Anyone have a spare KXN1052A?
> >
> 
> eBay has a UHF Micor channel element pair.
> 
> Kevin Custer
> 
> 
> Yahoo! Groups Links
> 
> 
> 
>





 
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Re: [Repeater-Builder] Mobile Repeaters?

2005-01-04 Thread Neil McKie


  Oh grief ... here we go ... again ...  ;) 


Mike Morris WA6ILQ wrote:
> 
> At 05:07 PM 1/3/05, you wrote:
> 
> >   Hey Mike,
> >
> >   Thirty plus years ago, I built up a portable 2 meter repeater
> >  for one of the Baja 500 off road races in Baja California.
> 
> If I recall that was the race where you tore the exhaust system
> out of your CHP 1960s Polara going up the hill to place the
> repeater, then one of the racing crews rebuilt it, then you tore
> it out again getting the repeater down... 

  Uh huh ... almost ... but I will spare you the corrections ... 
 
 
> Now repeat after me... CHP chase cars are not high-clearance
> off-road vehicles... 

  Yes sir !!  ... ducking ... 

 
> >I used a pair of Motorola Motrans - U43MSN - rated at 30 watts
> >out  - continuous duty.  I tuned them up so each could replace
> >the other  in case either the receiver or the transmitter should 
> >quit.
> 
> I never trusted the continuous duty rating on the Motran...
> never tried running one at 30w, but they were clean at the
> levels I ran them at (10-20w) and that's where I used them.
> Never needed any more, anyway. 
  
  After I moved to Oregon in 1976, I frequently used the Motran as 
 the hidden transmitter for T-Hunts.  I never had a problem with 
 them - part of that was knowing how to tune one up - correctly. 

  After inserting the Channel Element on the correct frequency, and 
 tuning the exciter and following multiplier stages according to the 
 manual, you just leave it keyed and tune for maximum output power 
 on your Bird Wattmeter.  Next?  

  Re T-Hunts, I frequently fed the output of the Motran to a 12 
 element KLM log-periodic fed Yagi pointed at something such as an 
 elevated steel water tank (Woodburn, Oregon) or a steel bridge 
 (I-5 Bridge, Portland, Oregon.  RF was everywhere.  


  (You don't want me to hide a transmitter hunt for you ... ever.) 
 
 
> Always had high ground available for the event's porta-peter,
> and never had a need for high power.  The one time
> I needed penetration I just used the KLM two-port power
> splitter, ran one side to the stationmaster on top of the
> tripod, and the other side to the KLM 16-el beam mounted
> on a second tripod.  Gave me an omni pattern with a large
> lobe pointed at the control point. 

  That works! 

 
> BTW did I ever tell you about the 220 mod for the U43MSN
> TX ???  just chop out 5 caps, insert a channel element for
> 149.000 and tune it up on 223.5 ... gives a perfectly clean,
> continuous duty 10w.  (220 freq / 3) then x 2 gives the 2m
> freq you order the rock for...  

  149.000
 - = 12.41 x 18 = 223.49998 
 12 

 
> The M series RX took some work to push to 220 but
> wasn't much more difficult than a Micor RX today. 

  Yes, the M Receiver front end will pose a couple problems on 
 that QSY ... 

 
> Somewhere around here I have a MSN with a
> "U43.5MSN-3190B" serial plate.  I ordered a blank
> one before Moto stopped selling them as spare parts
> and had a local engraver make it up.  Quite a few folks
> did double and triple takes when they saw it -
> complete with the 223.34 - 224.94 and 223.5 channel
> elements (complete with International Crystal style
> labels).  Never got a chance to show it to Ray Grimes.

  At last report, Ray is still around.  (I just looked him up, he's 
 almost as old as you are Mike.)

 
> >  If one end quit, swap units and Channel Elements and back
> >  on the air.  The interconnect was one pair of wires - included 
> >  the transmitter keying and audio.
> 
> Yup.  The T-1200 transformers and those out of the DC
> wireline panels in the A-strip base stations came in handy. 

  Yup.  I have a few of those transformers around here.  The last 
 time I looked up the price - was $130 or so. 


> >  Nothing ever quit ... and I still have the audio/transmitter
> >  adapter keying boxes in the garage.
> 
> Porta-peters are handy items.
> Who was it that made a repeater by cutting a UHF HT-220
> board in half with a jewelers saw??  cutting between traces?
> And then added a 2m HT-220 as a porta-mote? 

  One of the guys at the Beaverton Oregon Tektronix Plant. 

  The whole package is about 8 inches high, a foot long and about 7 
 inches deep ... has 1 antenna on top and a handle to carry it with. 

  Includes the following: 
440 MHz repeater (a Motorola HT-220 cut in half), 
a HT-220 on the 2 meter band as a base station, 
the duplexer for the UHF repeater, 
a diplexer to combine the VHF and UHF, 
the touch-tone decoder and repeater controller as well as the 
   battery pack to run this package for long periods of time - in 
   hours.  

  Is totally self contained.  This was done in early 1970's 
 technology.  


> Mike WA6ILQ 

  Neil - WA6KLA 


> 
> >
> >
> >
> >Mike Morris WA6ILQ wrote:
> > >
> > > Dakota...
> > >
> > > Can your operational requirements be met by a
> > > station in a parked vehicle, or does it have to be
> > > operational while in motion?
> > >

Re: [Repeater-Builder] VX2000U repeater

2005-01-04 Thread Jim B.

Ken Arck wrote:

> At 04:47 AM 1/4/2005 +, you wrote:
> 
> 
>>The radio will not be 1. used on ham frequencies, it is GMRS and the the 
>>scanner would be used to pickup up a business band radio that is a friend of 
>>the families on a VHF frequency I am licensed with FCC for GMRS and he is 
>>licensed. 
> 
> 
> <---Are you sure it's legal to mix services like that? I'm not...
> 
> Ken

I was having trouble reading what he said-no, repeating business radio 
onto GMRS is NOT legal.
-- 
Jim Barbour
WD8CHL





 
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[Repeater-Builder] Re: PA heat issues

2005-01-04 Thread Laryn Lohman


--- In Repeater-Builder@yahoogroups.com, "Paul Finch"
<[EMAIL PROTECTED]> wrote:
> I will add one other thing about heat.  Heat by itself is bad enough
but the
> worst part is the almost microwave heating effect that a PA has when
it's
> turned on and off.  It super heats when turned on and cools very
fast when
> turned off.  This has a tendency to rip the guts out of most
transistors and
> PC boards due to the expansion and contraction.
> 
> Quintron found this out and was one of the few that made their 900
MHz PA
> decks dependable.
> 
> Paul
>

What did Quintron do to prevent the effects described above?

Laryn K8TVZ







 
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RE: [Repeater-Builder] VX2000U repeater

2005-01-04 Thread Ken Arck

At 08:30 AM 1/4/2005 -0600, you wrote:

>Seems to me I've seen a discussion on one of the lists (maybe this one?)
>regarding the rebroadcast of NWS alerts on a ham repeater...  I don't have
>the rules right in front of me, but I'm thinking that might be legal...
>Anyone else remember this?

<---Yes it is legal. Section 97.113(e) specifically authorizes limited
retransmissions of propagation and weather forecast information intended
for use by the general public and originated from United States Government
stations. 

Ken
--
President and CTO - Arcom Communications
Makers of state-of-the-art repeater controllers and accessories.
http://www.ah6le.net/arcom/index.html
We now offer complete Kenwood TKR repeater packages!
AH6LE/R - IRLP Node 3000
http://www.irlp.net




 
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RE: [Repeater-Builder] VX2000U repeater

2005-01-04 Thread N9WYS

Seems to me I've seen a discussion on one of the lists (maybe this one?)
regarding the rebroadcast of NWS alerts on a ham repeater...  I don't have
the rules right in front of me, but I'm thinking that might be legal...
Anyone else remember this?

Mark - N9WYS

-Original Message-
From: Q [mailto:[EMAIL PROTECTED]
Sent: Monday, January 03, 2005 10:46 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] VX2000U repeater


Dont always assume the worst in people! I actually use an AOR scanner on
my repeater to listen to select frequencies on all ham bands 160m thru
1.2ghz. This is a high quality scanner and I do not recommend using the
cheap ones, they are too prone to interference. BTDT73,Lee,N3APP

Mark Holman wrote:

>You cannot rebroadcast Public Saftey on Ham freqs.  I'll give you a classic
>example in Michigan when I was at a meeting...
>
>Woman unknown was rebroadcasting police locations where the RADAR speed
>traps on 11 Meters CB CH. 19  needless to say Sheriff got ahold of this and
>arrested her and she was in Jail, everything consfiscated.
>
>doesn't matter whats being heard John Q. Public finds that you
retransmitted
>a traffic Stop for a burned out light bulb or a speeding ticket, he will be
>after you, and the court can fine you or have you making Martha Stewarts
>Designer Plates to hang on cars.
>
>M. H.
>
>- Original Message -
>From: "RileyNRachel Frazee" <[EMAIL PROTECTED]>
>To: 
>Sent: Monday, January 03, 2005 8:12 PM
>Subject: [Repeater-Builder] VX2000U repeater
>
>>
>>I have a VX 2000 U vertex 25 watt radio. just out of curiousity can it be
>>hooked up to a scanner and repeat what the scanner is recieving. it has a
>>9
>>pin connector on the back side of the radio and is used for various things
>>one thing is audio in. these radios can be connected to make a repeater, i
>>do know that. is it possible to connect a Scanner or another kind of radio
>>to it.? thanks for your replies in advance...
>>
>>Hope my question isnt totally stupid.






 
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[Repeater-Builder] Re: MSR2000 PA Problems

2005-01-04 Thread skipp025


> "N9WYS" <[EMAIL PROTECTED]> wrote:
> Gary, Skipp and/or anyone else, 
> I'm just curious - where is the failure occurring in 
> your PA?  

Depends on which model/version you have... 
Most PA failures occur in the final transistor 
module section. (The expensive parts) The cause 
is heat, possibly sourced to the self desoldering 
harmonic filter, high duty cycle operation and 
or reflected power issues. 

> I was also running an MSR2000 (albeit on UHF) and 
> I keep getting a failure at the harmonic filter 
> on the antenna output side.  (Kept melting the 
> connection.)

This is a very common problem, there is a fix. 
Motorola revised the the pa and the harmonic 
filter a few times.  The "B" version pa's are 
much better than the "A" versions. 

I replace the entire harmonic filter with the 
late version.  Check to see if your unit has 
lumped value caps soldered on the filter, or 
the equivalent etched value (in the substrate) 
caps. 

> I've since taken the machine off the air and 
> replaced it with a back-up. The backup has 
> been happy as a clam for about 5 months, 
> whereas the MSR would fail in about 4 - 6 
> weeks time.

I spent much of my late 80's era time repairing 
MSR A version PA's.  Motorhead (motorola) actually 
had a depot swap upgrade (to the B version) for 
a time. 

> If replacing parts in the PA will alleviate my 
> troubles, can someone point me in the right 
> direction?  I'd be willing to scrounge up an old 
> UHF Motorola Mitrek and cannibalize it to get 
> rid of the headaches I'm suffering now.

A late version mitrek will do the job... 

You have to take extra, extra, extra... extra 
care not to overheat the modules and ceramic 
substrates while removing them from the donor 
radio. The general rule when first learning is 
to trash one or two substrates before you learn 
how to manage the desoldering gun heat properly. 

If you hear the ceramic substrate crack one 
time, it's probably trash. Same applies to the 
micor pa ceramics. 
 
cheers
skipp 

skipp025 at yahoo.com 

ps: you can email me off the list if you need 
a source of used mitrek 110 watt uhf radios. 







 
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RE: [Repeater-Builder] PA heat issues

2005-01-04 Thread Paul Finch

I will add one other thing about heat.  Heat by itself is bad enough but the
worst part is the almost microwave heating effect that a PA has when it's
turned on and off.  It super heats when turned on and cools very fast when
turned off.  This has a tendency to rip the guts out of most transistors and
PC boards due to the expansion and contraction.

Quintron found this out and was one of the few that made their 900 MHz PA
decks dependable.

Paul


-Original Message-
From: skipp025 [mailto:[EMAIL PROTECTED]
Sent: Tuesday, January 04, 2005 10:45 AM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] PA heat issues




> "Gary" <[EMAIL PROTECTED]> wrote:
> My MSR has the TLD2532A 110 watt intermittent PA. NCD
> is more my terminology (non continuous duty) than
> anything else. I got into the habit of refering to
> an intermittent PA as non continuous duty (NCD)
> by hanging around another tech that used it.
> He was also the one that filled me in on MSRs' PA
> history. (however right or wrong the  info was)

No problem Gary...

Heat is a killer of electronics...  your pa is
continuous duty, just at reduced power levels.

People don't realize any reflected and high foward power
results in fast heat build up. The low duty cycle pa
has a problem with heat build up in lock to talk
(repeater operation).

> I was running my first PA at 60 watts when it failed.

Were the power control board V-limit and I-limit pots
properly set? It should have shut itself down when
trouble started.

> The only thing different that I'm doing now than
> before, is I am using fans to blow air out of the
> cabinet top side vents, plus a fan blowing across
> the PA heat sink fins. Before, I was just blowing
> accross the heat sink fins only. I'm not sure how
> efficient the PA heat sink fan is, because I had
> to do some creative engineering to get a fan mounted
> to blow up the fins from the bottom.

Sucking air up and out of the MSR Cabinets, through
the top side air vents is the best option. You can
remove the cabinet lid and covers without a lot of
grief. It takes the proper size torex bit and ratchet.

I use small metal bar stock to mount small ~4 or 5
inch dc fans across the vertical rails at the vent
level. The cover slips right over the fans, which
are triggered by extended cos logic and a timer.

> My site owner requires repeaters to be in cabinets
> with covers on, and you would know how little room
> there is to get a fan mounted to blow on the MSR
> PA with the front cover on the cabinet and still
> do some serious air movement.

Your site owner is smart... yes, I know about the
limited cabinet room. Hence the above fan mounting
information.

> It does work and looks somewhat professional.
> This repeater was getting heavy use at the first
> PA failure, but now not as much use. This may
> have something to do with its'longevity now.
> Gary  KB7TRP

73's Gary,

skipp








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[Repeater-Builder] PA heat issues

2005-01-04 Thread skipp025


> "Gary" <[EMAIL PROTECTED]> wrote:
> My MSR has the TLD2532A 110 watt intermittent PA. NCD 
> is more my terminology (non continuous duty) than 
> anything else. I got into the habit of refering to 
> an intermittent PA as non continuous duty (NCD) 
> by hanging around another tech that used it. 
> He was also the one that filled me in on MSRs' PA 
> history. (however right or wrong the  info was)

No problem Gary... 

Heat is a killer of electronics...  your pa is 
continuous duty, just at reduced power levels. 

People don't realize any reflected and high foward power 
results in fast heat build up. The low duty cycle pa 
has a problem with heat build up in lock to talk 
(repeater operation). 

> I was running my first PA at 60 watts when it failed. 

Were the power control board V-limit and I-limit pots 
properly set? It should have shut itself down when 
trouble started. 

> The only thing different that I'm doing now than 
> before, is I am using fans to blow air out of the 
> cabinet top side vents, plus a fan blowing across 
> the PA heat sink fins. Before, I was just blowing 
> accross the heat sink fins only. I'm not sure how 
> efficient the PA heat sink fan is, because I had 
> to do some creative engineering to get a fan mounted 
> to blow up the fins from the bottom. 

Sucking air up and out of the MSR Cabinets, through 
the top side air vents is the best option. You can 
remove the cabinet lid and covers without a lot of 
grief. It takes the proper size torex bit and ratchet. 

I use small metal bar stock to mount small ~4 or 5 
inch dc fans across the vertical rails at the vent 
level. The cover slips right over the fans, which 
are triggered by extended cos logic and a timer. 

> My site owner requires repeaters to be in cabinets 
> with covers on, and you would know how little room
> there is to get a fan mounted to blow on the MSR 
> PA with the front cover on the cabinet and still 
> do some serious air movement. 

Your site owner is smart... yes, I know about the 
limited cabinet room. Hence the above fan mounting 
information. 

> It does work and looks somewhat professional. 
> This repeater was getting heavy use at the first 
> PA failure, but now not as much use. This may 
> have something to do with its'longevity now.
> Gary  KB7TRP 

73's Gary, 

skipp 







 
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Re: [Repeater-Builder] VX2000U repeater

2005-01-04 Thread Mathew Quaife

I could be mistaking, sometimes things do change, but unless it is a FM
station between 88 to 108 Mhz, and the HF Broadcast to public listeners, it
is illegal to retransmit any signal other than NWS Alerts, or Amateur News
Bulletins.  So if it is not a General Boradcast for Public use, you cannot
broadcast anything.

Mathew



>
> Ken Arck wrote:
>
> > At 04:47 AM 1/4/2005 +, you wrote:
> >
> >
> >>The radio will not be 1. used on ham frequencies, it is GMRS and the the
> >>scanner would be used to pickup up a business band radio that is a
friend of
> >>the families on a VHF frequency I am licensed with FCC for GMRS and he
is
> >>licensed.
> >
> >
> > <---Are you sure it's legal to mix services like that? I'm not...
> >
> > Ken
>
> I was having trouble reading what he said-no, repeating business radio
> onto GMRS is NOT legal.
> --
> Jim Barbour
> WD8CHL
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>





 
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Re: [Repeater-Builder] VX2000U repeater

2005-01-04 Thread Mathew Quaife

Yes Mark, the NWS is the only rebroadcast that can be done, as must be done
only for the immediate area, and must not last more than a few minutes.
Other than that, no other rebroadcast can be made unless it relates to Ham
Radio, and must incur any forms of money you the pecuniary thing in any
shape or form.  Repeaters all over america are now set up to broadcast Sever
Weather Alerts, as well as Amber Alerts.  Becoming a growing thing in
America.

Mathew

- Original Message -
From: "N9WYS" <[EMAIL PROTECTED]>
To: 
Sent: Tuesday, January 04, 2005 6:30 AM
Subject: RE: [Repeater-Builder] VX2000U repeater


>
> Seems to me I've seen a discussion on one of the lists (maybe this one?)
> regarding the rebroadcast of NWS alerts on a ham repeater...  I don't have
> the rules right in front of me, but I'm thinking that might be legal...
> Anyone else remember this?
>
> Mark - N9WYS
>
> -Original Message-
> From: Q [mailto:[EMAIL PROTECTED]
> Sent: Monday, January 03, 2005 10:46 PM
> To: Repeater-Builder@yahoogroups.com
> Subject: Re: [Repeater-Builder] VX2000U repeater
>
>
> Dont always assume the worst in people! I actually use an AOR scanner on
> my repeater to listen to select frequencies on all ham bands 160m thru
> 1.2ghz. This is a high quality scanner and I do not recommend using the
> cheap ones, they are too prone to interference. BTDT73,Lee,N3APP
>
> Mark Holman wrote:
>
> >You cannot rebroadcast Public Saftey on Ham freqs.  I'll give you a
classic
> >example in Michigan when I was at a meeting...
> >
> >Woman unknown was rebroadcasting police locations where the RADAR speed
> >traps on 11 Meters CB CH. 19  needless to say Sheriff got ahold of this
and
> >arrested her and she was in Jail, everything consfiscated.
> >
> >doesn't matter whats being heard John Q. Public finds that you
> retransmitted
> >a traffic Stop for a burned out light bulb or a speeding ticket, he will
be
> >after you, and the court can fine you or have you making Martha Stewarts
> >Designer Plates to hang on cars.
> >
> >M. H.
> >
> >- Original Message -
> >From: "RileyNRachel Frazee" <[EMAIL PROTECTED]>
> >To: 
> >Sent: Monday, January 03, 2005 8:12 PM
> >Subject: [Repeater-Builder] VX2000U repeater
> >
> >>
> >>I have a VX 2000 U vertex 25 watt radio. just out of curiousity can it
be
> >>hooked up to a scanner and repeat what the scanner is recieving. it has
a
> >>9
> >>pin connector on the back side of the radio and is used for various
things
> >>one thing is audio in. these radios can be connected to make a repeater,
i
> >>do know that. is it possible to connect a Scanner or another kind of
radio
> >>to it.? thanks for your replies in advance...
> >>
> >>Hope my question isnt totally stupid.
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>





 
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Re: [Repeater-Builder] Mobile Repeaters?

2005-01-04 Thread Jim B.

Dakota Summerhawk wrote:

> Cant drop the 2M side of things as a lot of hams don’t have 70CM around here
> and 2M will do what 70CM wont in the mountains when runs and races require
> 2M am looking at a few suggestions for the van right now that might work.
> Couple of emails on Motorola gear, either one or two channel radios and a
> controller and duplexer for the rigs that I need.
> Thanks for all the help!
> Dakota

I still don't recommend a 2M repeater in a comm van. Maybe a remote 
input for an existing repeater?

-- 
Jim Barbour
WD8CHL





 
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Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel Element

2005-01-04 Thread [EMAIL PROTECTED]

Thanks, but I gave up using BBY Repeaters back in the 70's. I'm already
trying to get rid of my "collection" (of MICOR, MASTRII, MSR-2000 and
MSF-5000 Repeaters) as it is. I'd like to have my garage back for storing
cars!
LJ


Original Message:
-
From: Neil McKie [EMAIL PROTECTED]
Date: Mon, 03 Jan 2005 21:21:10 -0800
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel Element




  True ... I used to service them years ago in southern California. 

  I have one almost complete in my garage to add to your collection 
 - I can deliver to your new place in a few days.  (Jan 15th) 

  I may have the community repeater panel also for your collection. 

  Neil 

"[EMAIL PROTECTED]" wrote:
> 
> Wow - now that's going back a "few" years!
> LJ
> 
> Original Message:
> -
> From: Neil McKie [EMAIL PROTECTED]
> Date: Mon, 03 Jan 2005 20:42:17 -0800
> To: Repeater-Builder@yahoogroups.com
> Subject: Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel Element
> 
>   Hi Larry,
> 
>   I believe the TLN1124A Channel Element was used in the 0.0002%
>  field conversion on the J74BBY base and repeater station.  I'll
>  have to look it up to be certain.
> 
>   Hope this helps,
> 
>   Neil - WA6KLA
> 
> "[EMAIL PROTECTED]" wrote:
> >
> > I recently picked up a UHF MICOR 75-Watt Repeater which has the correct
> > KXN1024A Receive Channel Element, but needs the KXN1052A Transmit
Channel
> > Element. It came with a gold-colored TLN1124A Element in the
transmitter,
> > which I don't believe was intended to go in a MICOR - I haven't been
able
> > to find that numbered element in any of my MICOR manuals. I think
someone
> > just stuck it in the transmitter because it was a UHF Transmit Channel
> > Element and it physically fit in the exciter.
> >
> > Anyone have a spare KXN1052A?
> >
> > Thanks,
> > Larry
> >
> > 
> > mail2web - Check your email from the web at
> > http://mail2web.com/ .
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> 
> 
> Yahoo! Groups Links
> 
> 
> 
> 
> mail2web - Check your email from the web at
> http://mail2web.com/ .
> 
> 
> Yahoo! Groups Links
> 
> 
> 
>





 
Yahoo! Groups Links



 





mail2web - Check your email from the web at
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Re: [Repeater-Builder] VX2000U repeater

2005-01-04 Thread Mathew Quaife

Best read the FCC rules on that one.  You can't retransmit signals like
that.  Only exception to that one is severe weather alerts, and if I am not
mistaking, there is a time limit on that as well as to how long it can be
transmitted.

Mathew

- Original Message -
From: "RileyNRachel Frazee" <[EMAIL PROTECTED]>
To: 
Sent: Monday, January 03, 2005 5:12 PM
Subject: [Repeater-Builder] VX2000U repeater


>
>
>
> I have a VX 2000 U vertex 25 watt radio. just out of curiousity can it be
> hooked up to a scanner and repeat what the scanner is recieving. it has a
9
> pin connector on the back side of the radio and is used for various things
> one thing is audio in. these radios can be connected to make a repeater, i
> do know that. is it possible to connect a Scanner or another kind of radio
> to it.? thanks for your replies in advance...
>
> Hope my question isnt totally stupid.
>
> _
> Express yourself instantly with MSN Messenger! Download today - it's FREE!
> http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
>
>
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>





 
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Re: [Repeater-Builder] Digest Number 2898

2005-01-04 Thread Louis Manglass


I'm not familiar with the repeaters but if I remember correctly the HT600's 
should program down to 438 with standard software. I have 2 of them on the ham 
band.

73,
Lou

- Original Message - 
  From: NØATH 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Monday, January 03, 2005 2:11 AM 
  Subject: [Repeater-Builder] Motorola Flexars - Sell? 


  I have a friend that sent me the following e-mail: Are there any Motorola 
fans out there that can tell me what could be done with these? These rigs are 
in EXTREMELY good condition - Look New.( The repeaters ( I haven't seen the 
HT's )). I don't know if they have PL, DPL, any type of an ID or what in them. 
Are they of value at all? My friend is getting along in years and doesn't want 
to try and build anything from them. 


  >Dave / what could be done with 2 Motorola Flexar base repeaters on 469.775 
mhz DPL 3l5, probably about >10 maybe 25 watts, these were used in a large 
metal warehouse for communications by the maintenance >crew, the H/T's had 6 
channels, 469.775; 464.775;466.100; & simplex 461.100; 469.775; 
466.100.the >Motorola H/T's were HT600's. Do not have any manuals. Do 
have 2 small turnstyle antennas to go with the >repeaters. 

  Can anybody help me with info on these? Are they useable on the amateur bands 
or worthwhile to try to convert? I think the talkies are probably all with drop 
in chargers and everything was being used when the 
  warehouse went belly up. I wouldn't hazard a guess on the condition of the 
Ni-cads. Probably some good /some bad. They have all been off for a period of 
time. 

  Dave / NØATH 






 
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Re: [Repeater-Builder] Mobile Repeaters- Another Case History

2005-01-04 Thread Mathew Quaife

Very well stated.  Our county just bought such a trailer, and they put a man
in charge of this unit that believes he knows everything about radio
communications, to the point that he argued with me for nearly an hour when
he told me that our Hustler G7 antenna at our local Ambulance Service was no
good becuase he checked it with a continuity checker and it showed a dead
short.  (This was after a lightning storm fried the radio).  As I tried to
explained to him that it would show a short as that is the design of the
antenna, he became so flustard that he ended the conversation with "That is
the Wrong Antenna for This Radio", VHF Radio and a High Band VHF Antenna, 50
Ohms, figure it out, but my Bird Watt Meter Was wrong, as well as my MFJ
Analyzer, yet the antenna receives and transmits just fine.Anyone can
build a communications van, but to make it work, that is a different story.
And as far as power goes, I started out with a Regency Repeater when I made
the decision to build a repeater for our county.  The exciter is 3 watts out
and was being heard better than 15 miles away with no problems on a
handheld, and there was not even a duplexer on it yet.  It did this
everyday, using seperate antennas.  Now we run 160 watts through a duplexer,
and not many people noticed the difference.  Better way to say it, the
better basketball players are generally taller.  Not power, but height.

Mathew


>
> I had planned to sit on the sidelines and enjoy the spirited dialog, but
> Jim brought up a point which needs to be chiseled in stone:
> Communications vans are NOT the ideal environment for a repeater!
>
> Case in point:  A nearby Air Force Base has a mobile command post which
> is, for all intents and purposes, a communications van.  I invited the
> officer in charge of this vehicle to bring it out to a radio club
> meeting for a "show and tell" to which he readily agreed.  It was a
> wonderful experience for the members of my Amateur Radio Club to
> witness, first hand, the superior technology that the communication
> wizards had employed to create this masterpiece of emergency capability.
>
> Our joy at observing this epitome of radio communications capability was
> diminished when one of the hams asked what all of the antennas (UHF
> mobile 3dB gain) lined up, 10 inches apart at the rear of the trailer,
> were used for.  The officer replied that each of the antennas was
> connected to a separate Motorola Astro Digital Spectra radio, so that
> multiple conversations could be carried on, using the Base's UHF trunked
> radio system.  When asked if two or more conversations had ever been
> handled at one time, the answer was, "Uh, no, for some reason we can
> only talk on one radio at a time."  DUH, Hello!?
>
> Rest assured, your local, state, or federal taxpayer dollars are being
> spent for fiascos such as this, simply because these communications
> vans/trailers/command posts are seldom being designed and engineered by
> radio-savvy people, but by catalog browsers and bean-counters.  Not only
> is a 10-inch spacing between the antennas of two same-band transceivers
> an invitation to disaster, not to mention potential damage to nearby
> radios, but none of the comm van designers seemed to understand the
> realities of desense and bandpass filtering.
>
> Of course, it is a challenge to install bandpass filters on
> frequency-agile radios, but if you want to operate independently in a
> dense RF environment, you must design your system accordingly.  The
> primary channels should be on single-frequency radios, with extremely
> tight bandpass filtering on all receive frequencies and, if necessary,
> on all transmit frequencies.
>
> When properly designed, a communications van/trailer/command post can
> operate simultaneously on a multitude of frequencies, bands, and
> emissions.  Unfortunately, far too many such installations are doomed to
> failure before a switch is thrown.
>
> 73, Eric Lemmon WB6FLY
>
> "Jim B." wrote:
> >
> > Running that much power in a communications van *WILL, REPEAT, WILL*,
> > cause interference to other radios in the van, and is TOTALLY
> > UNECESSARY! 10-20 watts is PLENTY for a 'portable' repeater.
> > And in most communcation van environments, there is not enough room for
> > anything the size of a 2M or even a 220 duplexer. A 10 watt UHF repeater
> > in a communcations van with a 3dB gain antenna on 30' to 60' of mast is
> > quite adequate for anything you would need a repeater in a comm-van for.
> > If you need more coverage then that, you need to deploy more then just a
> > comm-van anyway.
> > Of the active comm-vans I am familiar with, only one has a repeater on
> > board, and it never gets used in a response, cause it usually causes
> > more problems then it cures, to the extent that they are thinking of
> > pulling it.
> > --
> > Jim Barbour
> > WD8CHL
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>





 
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<*> 

Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel Element

2005-01-04 Thread Kevin Custer

[EMAIL PROTECTED] wrote:

>I recently picked up a UHF MICOR 75-Watt Repeater which has the correct
>KXN1024A Receive Channel Element, but needs the KXN1052A Transmit Channel
>Element. It came with a gold-colored TLN1124A Element in the transmitter,
>which I don't believe was intended to go in a MICOR - I haven't been able
>to find that numbered element in any of my MICOR manuals. I think someone
>just stuck it in the transmitter because it was a UHF Transmit Channel
>Element and it physically fit in the exciter.
>
>Anyone have a spare KXN1052A?
>

eBay has a UHF Micor channel element pair.

Kevin Custer





 
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Re: [Repeater-Builder] Mobile Repeaters?

2005-01-04 Thread Mike Morris WA6ILQ

At 05:07 PM 1/3/05, you wrote:

>   Hey Mike,
>
>   Thirty plus years ago, I built up a portable 2 meter repeater
>  for one of the Baja 500 off road races in Baja California.

If I recall that was the race where you tore the exhaust system
out of your CHP 1960s Polara going up the hill to place the
repeater, then one of the racing crews rebuilt it, then you tore
it out again getting the repeater down...

Now repeat after me... CHP chase cars are not high-clearance
off-road vehicles...

>I used a pair of Motorola Motrans - U43MSN - rated at 30 watts
>out  - continuous duty.  I tuned them up so each could replace
>the other  in case either the receiver or the transmitter should quit.

I never trusted the continuous duty rating on the Motran...
never tried running one at 30w, but they were clean at the
levels I ran them at (10-20w) and that's where I used them.
Never needed any more, anyway.

Always had high ground available for the event's porta-peter,
and never had a need for high power.  The one time
I needed penetration I just used the KLM two-port power
splitter, ran one side to the stationmaster on top of the
tripod, and the other side to the KLM 16-el beam mounted
on a second tripod.  Gave me an omni pattern with a large
lobe pointed at the control point.

BTW did I ever tell you about the 220 mod for the U43MSN
TX ???  just chop out 5 caps, insert a channel element for
149.000 and tune it up on 223.5 ... gives a perfectly clean,
continuous duty 10w.  (220 freq / 3) then x 2 gives the 2m
freq you order the rock for...

The M series RX took some work to push to 220 but
wasn't much more difficult than a Micor RX today.

Somewhere around here I have a MSN with a
"U43.5MSN-3190B" serial plate.  I ordered a blank
one before Moto stopped selling them as spare parts
and had a local engraver make it up.  Quite a few folks
did double and triple takes when they saw it -
complete with the 223.34 - 224.94 and 223.5 channel
elements (complete with International Crystal style
labels).  Never got a chance to show it to Ray Grimes.

>  If one end quit, swap units and Channel Elements and back
>  on the air.  The interconnect was one pair of wires - included the
>  transmitter keying and audio.

Yup.  The T-1200 transformers and those out of the DC
wireline panels in the A-strip base stations came in handy.

>  Nothing ever quit ... and I still have the audio/transmitter
>  adapter keying boxes in the garage.

Porta-peters are handy items.
Who was it that made a repeater by cutting a UHF HT-220
board in half with a jewelers saw??  cutting between traces?
And then added a 2m HT-220 as a porta-mote?

Mike WA6ILQ

>
>
>
>Mike Morris WA6ILQ wrote:
> >
> > Dakota...
> >
> > Can your operational requirements be met by a
> > station in a parked vehicle, or does it have to be
> > operational while in motion?
> >
> > Can your 2m repeater requirements be filled by a single
> > channel solution?
> >
> > Twenty years ago when UHF was not in use locally by the
> > average ham we had a portable 2m repeater that in the first
> > incarnation was made usable by two notch cavities - one for
> > RX and one for TX.
> > The radios then were 30 or 40w (I forget which) Motorola
> > Motran mobiles, which would survive continuous duty at
> > the 10w level.  With the cavities in line the antennas could
> > be as close as 20 feet.
> >
> > Later on we needed to use it and the cavities were not
> > available, so we tried it anyway and by placing the RX
> > radio and it's antenna 75 to 100 feet away it was usable
> > with careful placement of the RX and TX.  In one case we
> > put a full-size RV between the two and grounded the metal
> > skin of the RV.
> >
> > In your situation, if an im-mobile solution would work, I'd
> > put a 2m antenna on a tripod mount coupled to an RX
> > powered by a gellcell (maybe even with a solar panel
> > plugged in).  A 100' cable would carry audio and PTT
> > to the vehicle where the 10-30w TX would be.  And
> > without cavities it could be frequency agile.  If you could
> > scare up a couple of cavities you would limit yourself to
> > one frequency but the performance would go up
> > tremendously.
> >
> > I could build it with stuff on the shelf -  a Motrac M-series
> > receiver, and a split winding audio transformer would fit
> > into a 50-cal ammo box.  If the Motrac RX was used (it
> > has a passive front end and for a 20+ year old RX is really,
> > really, really overload resistant) the biggest expense would
> > be the crystal.  For the TX I'd use a GE MVP,  Mastr II or
> > Exec II.
> >
> > How much of a controller do you need?  You could probably
> > get by with an ICS Basic at about $80
> > See http://www.ics-ctrl.com
> > Mike WA6ILQ
> >
> > At 01:45 PM 1/3/05, you wrote:
> >
> > >Cant drop the 2M side of things as a lot of hams don't
> > >have 70CM around here and 2M will do what 70CM wont
> > >in the mountains when runs and races require 2M am
> > >looking at a few suggestions for the van right now tha

Re: [Repeater-Builder] Re: [Motorola] MSR2000 PA Transistors

2005-01-04 Thread Steven Passmore

>  Get down to your local ham swapmeet and start catching up.  Of

Hmm...  Last Swap meet I went to (Pacificon) was mostly boat anchors and 
parts for them.  about the only <50 Mhz stuff was some tband mastr II's.
I did find deal on a piece of heliax but other than that, pretty useless.

Anyone know if there are any swap meets in the SF bay area that have 
repeater goodies?

Steve P. 





 
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[Repeater-Builder] SINAD measurements

2005-01-04 Thread wn1b8


I am curious to know what everyone on the list uses to perform SINAD 
measurements? Anyone doing it without a service monitor? If so, what 
do you use for a 1KHz. notch? Can anyone recommend a design to 
construct a deep notch? I can only get about 20 dB through my Datong 
filter.

Thanks,

Scott Madison, WN1B







 
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Re: [Repeater-Builder] System Status, west

2005-01-04 Thread Neil McKie


  Uh huh ... (no comment) 

  Neil 


Mike Mullarkey wrote:
> 
> Neil,
> It is called built in guaranteed profit.
> 
> Oregon Repeater Linking Group
> Mike Mullarkey
> 6539 E Street
> Springfield, OR 97478
> 541-747-1303
> [EMAIL PROTECTED]
> www.orlg.org
> 
> 
> 
> -Original Message-
> From: Neil McKie [mailto:[EMAIL PROTECTED]
> Sent: Monday, January 03, 2005 3:12 PM
> Subject: [Repeater-Builder] System Status, west
> 
>   ... snip ...
> 
> > -   -   -   -   -   
> > If only Bill Gates had a nickel for every time Windows crashed.
> > OH! Wait!  he does!
> 
> 
> Yahoo! Groups Links
> 
> 
> 
> 
> Yahoo! Groups Links
> 
> 
> 
>





 
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Re: [Repeater-Builder] VX2000U repeater

2005-01-04 Thread Q

Dont always assume the worst in people! I actually use an AOR scanner on 
my repeater to listen to select frequencies on all ham bands 160m thru 
1.2ghz. This is a high quality scanner and I do not recommend using the 
cheap ones,they are too prone to interference.BTDT73,Lee,N3APP

Mark Holman wrote:

>You cannot rebroadcast Public Saftey on Ham freqs.  I'll give you a classic 
>example in Michigan when I was at a meeting...
>
>Woman unknown was rebroadcasting police locations where the RADAR speed 
>traps on 11 Meters CB CH. 19  needless to say Sheriff got ahold of this and 
>arrested her and she was in Jail, everything consfiscated.
>
>doesn't matter whats being heard John Q. Public finds that you retransmitted 
>a traffic Stop for a burned out light bulb or a speeding ticket, he will be 
>after you, and the court can fine you or have you making Martha Stewarts 
>Designer Plates to hang on cars.
>
>M. H.
>
>- Original Message - 
>From: "RileyNRachel Frazee" <[EMAIL PROTECTED]>
>To: 
>Sent: Monday, January 03, 2005 8:12 PM
>Subject: [Repeater-Builder] VX2000U repeater
>
>
>  
>
>>
>>I have a VX 2000 U vertex 25 watt radio. just out of curiousity can it be
>>hooked up to a scanner and repeat what the scanner is recieving. it has a 
>>9
>>pin connector on the back side of the radio and is used for various things
>>one thing is audio in. these radios can be connected to make a repeater, i
>>do know that. is it possible to connect a Scanner or another kind of radio
>>to it.? thanks for your replies in advance...
>>
>>Hope my question isnt totally stupid.
>>
>>
>>
>>
>  
>





 
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Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel Element

2005-01-04 Thread JOHN MACKEY

I've got one of the old 44BBY base stations I've been meaning to overhaul &
put in to service at my work.  (where they can pay the electric bill to keep
it running!)

-- Original Message --
Received: Mon, 03 Jan 2005 11:22:54 PM CST
From: Neil McKie <[EMAIL PROTECTED]>
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel Element

> 
> 
>   True ... I used to service them years ago in southern California. 
> 
>   I have one almost complete in my garage to add to your collection 
>  - I can deliver to your new place in a few days.  (Jan 15th) 
> 
>   I may have the community repeater panel also for your collection. 
> 
>   Neil 
> 
> "[EMAIL PROTECTED]" wrote:
> > 
> > Wow - now that's going back a "few" years!
> > LJ
> > 
> > Original Message:
> > -
> > From: Neil McKie [EMAIL PROTECTED]
> > Date: Mon, 03 Jan 2005 20:42:17 -0800
> > To: Repeater-Builder@yahoogroups.com
> > Subject: Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel Element
> > 
> >   Hi Larry,
> > 
> >   I believe the TLN1124A Channel Element was used in the 0.0002%
> >  field conversion on the J74BBY base and repeater station.  I'll
> >  have to look it up to be certain.
> > 
> >   Hope this helps,
> > 
> >   Neil - WA6KLA
> > 
> > "[EMAIL PROTECTED]" wrote:
> > >
> > > I recently picked up a UHF MICOR 75-Watt Repeater which has the correct
> > > KXN1024A Receive Channel Element, but needs the KXN1052A Transmit
Channel
> > > Element. It came with a gold-colored TLN1124A Element in the
transmitter,
> > > which I don't believe was intended to go in a MICOR - I haven't been
able
> > > to find that numbered element in any of my MICOR manuals. I think
someone
> > > just stuck it in the transmitter because it was a UHF Transmit Channel
> > > Element and it physically fit in the exciter.
> > >
> > > Anyone have a spare KXN1052A?
> > >
> > > Thanks,
> > > Larry
> > >
> > > 
> > > mail2web - Check your email from the web at
> > > http://mail2web.com/ .
> > >
> > >
> > > Yahoo! Groups Links
> > >
> > >
> > >
> > >
> > 
> > 
> > Yahoo! Groups Links
> > 
> > 
> > 
> > 
> > mail2web - Check your email from the web at
> > http://mail2web.com/ .
> > 
> > 
> > Yahoo! Groups Links
> > 
> > 
> > 
> >
> 
> 
> 
> 
> 
>  
> Yahoo! Groups Links
> 
> 
> 
>  
> 
> 
> 
> 







 
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[Repeater-Builder] Vertex VX-200U

2005-01-04 Thread Riley Frazee



Is i possible to use a scanner BC796D as the Rcvr for a repeater. i 
am looking at hooking up the scanner to the VX2000u and using it as a 
crossband repeater however i know that the scanner wont transmit so 
its like a crossband monitor i guess. i dont know if this is possible 
i do know that you can make a repeater out of two vx2000u radios.  
Thanks in Advance










 
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[Repeater-Builder] Re: SINAD measurements

2005-01-04 Thread Laryn Lohman


--- In Repeater-Builder@yahoogroups.com, "wn1b8" <[EMAIL PROTECTED]> wrote:
> 
> I am curious to know what everyone on the list uses to perform SINAD 
> measurements? Anyone doing it without a service monitor?  
Thanks,
> 
> Scott Madison, WN1B


I am using an old Measurements signal generator which has a 1kc
internally modulated tone available, and a separate Sinadder box.

Laryn K8TVZ







 
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Re: [Repeater-Builder] Cable on DB4001-1 Length

2005-01-04 Thread Eric Lemmon

Mathew,

Yes, and possibly.  Perhaps Decibel Products Tech Support can advise you
on the correct jumper length for a DB4001-2 filter, which is two
DB4001-1 cavities in series.  Adjust all four coupling loops for optimum
return loss at the receive frequency and a total insertion loss of 1.0
dB.  The jumper between the duplexer's RX output and the input to the
first bandpass cavity should be approximately 1/2 wavelength, inclusive
of the lengths of the coupling loops within the cavities at each end. 
Before getting "wrapped around the axle" on this, first try using a
cable that is the same length as the jumpers on the RX side of the
duplexer.  You might get lucky with a random length, and if it works
okay...

73, Eric Lemmon WB6FLY

w9mwq wrote:
> 
> I am going to use two of the Decibel Products DB-4001-1 Filters on
> the receive side of my repeater once I connect a preamp this week.
> What I need to know is, is there a certain length the cable has to
> be between the two cavities that connects them together as well as
> between the preamp and the filters?
> 
> Mathew
> 
> 
> Yahoo! Groups Links
> 
> 
> 
>




 
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Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel Element

2005-01-04 Thread Neil McKie


  True ... I used to service them years ago in southern California. 

  I have one almost complete in my garage to add to your collection 
 - I can deliver to your new place in a few days.  (Jan 15th) 

  I may have the community repeater panel also for your collection. 

  Neil 

"[EMAIL PROTECTED]" wrote:
> 
> Wow - now that's going back a "few" years!
> LJ
> 
> Original Message:
> -
> From: Neil McKie [EMAIL PROTECTED]
> Date: Mon, 03 Jan 2005 20:42:17 -0800
> To: Repeater-Builder@yahoogroups.com
> Subject: Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel Element
> 
>   Hi Larry,
> 
>   I believe the TLN1124A Channel Element was used in the 0.0002%
>  field conversion on the J74BBY base and repeater station.  I'll
>  have to look it up to be certain.
> 
>   Hope this helps,
> 
>   Neil - WA6KLA
> 
> "[EMAIL PROTECTED]" wrote:
> >
> > I recently picked up a UHF MICOR 75-Watt Repeater which has the correct
> > KXN1024A Receive Channel Element, but needs the KXN1052A Transmit Channel
> > Element. It came with a gold-colored TLN1124A Element in the transmitter,
> > which I don't believe was intended to go in a MICOR - I haven't been able
> > to find that numbered element in any of my MICOR manuals. I think someone
> > just stuck it in the transmitter because it was a UHF Transmit Channel
> > Element and it physically fit in the exciter.
> >
> > Anyone have a spare KXN1052A?
> >
> > Thanks,
> > Larry
> >
> > 
> > mail2web - Check your email from the web at
> > http://mail2web.com/ .
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> 
> 
> Yahoo! Groups Links
> 
> 
> 
> 
> mail2web - Check your email from the web at
> http://mail2web.com/ .
> 
> 
> Yahoo! Groups Links
> 
> 
> 
>





 
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Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel Element

2005-01-04 Thread [EMAIL PROTECTED]

Wow - now that's going back a "few" years!
LJ


Original Message:
-
From: Neil McKie [EMAIL PROTECTED]
Date: Mon, 03 Jan 2005 20:42:17 -0800
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel Element




  Hi Larry, 

  I believe the TLN1124A Channel Element was used in the 0.0002% 
 field conversion on the J74BBY base and repeater station.  I'll 
 have to look it up to be certain.  

  Hope this helps, 

  Neil - WA6KLA 

"[EMAIL PROTECTED]" wrote:
> 
> I recently picked up a UHF MICOR 75-Watt Repeater which has the correct
> KXN1024A Receive Channel Element, but needs the KXN1052A Transmit Channel
> Element. It came with a gold-colored TLN1124A Element in the transmitter,
> which I don't believe was intended to go in a MICOR - I haven't been able
> to find that numbered element in any of my MICOR manuals. I think someone
> just stuck it in the transmitter because it was a UHF Transmit Channel
> Element and it physically fit in the exciter.
> 
> Anyone have a spare KXN1052A?
> 
> Thanks,
> Larry
> 
> 
> mail2web - Check your email from the web at
> http://mail2web.com/ .
> 
> 
> Yahoo! Groups Links
> 
> 
> 
>





 
Yahoo! Groups Links



 





mail2web - Check your email from the web at
http://mail2web.com/ .






 
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Re: [Repeater-Builder] VX2000U repeater

2005-01-04 Thread Maire Company

Kenwood and Primus both make set up's for what you are asking  but like I 
said  you and him both need to be on part 90 channels and both on the same 
call sign set up as a system.  I have done this in the past the other 
problem is if the main channel is UHF then the VHF repeater can only be low 
power.  look in part 90 under mobile repeater.  we have set them up a number 
of times  they work good if you get high end equipment.  Right now in my 
truck I have a set up from Kenwood tk-780 and tk880 works good but not low 
cost.


- Original Message - 
From: "RileyNRachel Frazee" <[EMAIL PROTECTED]>
To: 
Sent: Monday, January 03, 2005 11:47 PM
Subject: Re: [Repeater-Builder] VX2000U repeater


>
>
> The radio will not be 1. used on ham frequencies, it is GMRS and the the
> scanner would be used to pickup up a business band radio that is a friend 
> of
> the families on a VHF frequency I am licensed with FCC for GMRS and he is
> licensed. we work together and help each other out a lot. it would just be
> nice to hear him without having to put another radio in the pickup or put 
> a
> scanner in there. i thought if i would hook the scanner to the radio at 
> the
> base I would be able to listen to it. so i guess it IS POSSIBLE if peple 
> are
> getting in trouble for broadcasting public safety
>
>>From: "Mark Holman" <[EMAIL PROTECTED]>
>>Reply-To: Repeater-Builder@yahoogroups.com
>>To: 
>>Subject: Re: [Repeater-Builder] VX2000U repeater
>>Date: Mon, 3 Jan 2005 23:35:32 -0500
>>
>>
>>You cannot rebroadcast Public Saftey on Ham freqs.  I'll give you a 
>>classic
>>example in Michigan when I was at a meeting...
>>
>>Woman unknown was rebroadcasting police locations where the RADAR speed
>>traps on 11 Meters CB CH. 19  needless to say Sheriff got ahold of this 
>>and
>>arrested her and she was in Jail, everything consfiscated.
>>
>>doesn't matter whats being heard John Q. Public finds that you
>>retransmitted
>>a traffic Stop for a burned out light bulb or a speeding ticket, he will 
>>be
>>after you, and the court can fine you or have you making Martha Stewarts
>>Designer Plates to hang on cars.
>>
>>M. H.
>>
>>- Original Message -
>>From: "RileyNRachel Frazee" <[EMAIL PROTECTED]>
>>To: 
>>Sent: Monday, January 03, 2005 8:12 PM
>>Subject: [Repeater-Builder] VX2000U repeater
>>
>>
>> >
>> >
>> >
>> > I have a VX 2000 U vertex 25 watt radio. just out of curiousity can it
>>be
>> > hooked up to a scanner and repeat what the scanner is recieving. it has
>>a
>> > 9
>> > pin connector on the back side of the radio and is used for various
>>things
>> > one thing is audio in. these radios can be connected to make a 
>> > repeater,
>>i
>> > do know that. is it possible to connect a Scanner or another kind of
>>radio
>> > to it.? thanks for your replies in advance...
>> >
>> > Hope my question isnt totally stupid.
>> >
>> > _
>> > Express yourself instantly with MSN Messenger! Download today - it's
>>FREE!
>> > http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> > Yahoo! Groups Links
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>>
>>
>>
>>
>>
>>
>>Yahoo! Groups Links
>>
>>
>>
>>
>>
>>
>>
>
> _
> Express yourself instantly with MSN Messenger! Download today - it's FREE!
> hthttp://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
>
>
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
> 





 
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Re: [Repeater-Builder] VX2000U repeater

2005-01-04 Thread Maire Company

the last I read  it is a FCC no no.   you can not mix part 90 and 95 freg. 
and if you do VHF and UHF part 90  there is a section in the part 90 that 
give you the power and how to mix the two.  also both freg also need to have 
the same call sign.


- Original Message - 
From: "Ken Arck" <[EMAIL PROTECTED]>
To: 
Sent: Monday, January 03, 2005 11:54 PM
Subject: Re: [Repeater-Builder] VX2000U repeater


>
> At 04:47 AM 1/4/2005 +, you wrote:
>
>>The radio will not be 1. used on ham frequencies, it is GMRS and the the
>>scanner would be used to pickup up a business band radio that is a friend 
>>of
>>the families on a VHF frequency I am licensed with FCC for GMRS and he is
>>licensed.
>
> <---Are you sure it's legal to mix services like that? I'm not...
>
> Ken
> --
> President and CTO - Arcom Communications
> Makers of state-of-the-art repeater controllers and accessories.
> http://www.ah6le.net/arcom/index.html
> We now offer complete Kenwood TKR repeater packages!
> AH6LE/R - IRLP Node 3000
> http://www.irlp.net
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
> 





 
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Re: [Repeater-Builder] VX2000U repeater

2005-01-04 Thread Ken Arck

At 04:47 AM 1/4/2005 +, you wrote:

>The radio will not be 1. used on ham frequencies, it is GMRS and the the 
>scanner would be used to pickup up a business band radio that is a friend of 
>the families on a VHF frequency I am licensed with FCC for GMRS and he is 
>licensed. 

<---Are you sure it's legal to mix services like that? I'm not...

Ken
--
President and CTO - Arcom Communications
Makers of state-of-the-art repeater controllers and accessories.
http://www.ah6le.net/arcom/index.html
We now offer complete Kenwood TKR repeater packages!
AH6LE/R - IRLP Node 3000
http://www.irlp.net




 
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Re: [Repeater-Builder] VX2000U repeater

2005-01-04 Thread RileyNRachel Frazee


The radio will not be 1. used on ham frequencies, it is GMRS and the the 
scanner would be used to pickup up a business band radio that is a friend of 
the families on a VHF frequency I am licensed with FCC for GMRS and he is 
licensed. we work together and help each other out a lot. it would just be 
nice to hear him without having to put another radio in the pickup or put a 
scanner in there. i thought if i would hook the scanner to the radio at the 
base I would be able to listen to it. so i guess it IS POSSIBLE if peple are 
getting in trouble for broadcasting public safety

>From: "Mark Holman" <[EMAIL PROTECTED]>
>Reply-To: Repeater-Builder@yahoogroups.com
>To: 
>Subject: Re: [Repeater-Builder] VX2000U repeater
>Date: Mon, 3 Jan 2005 23:35:32 -0500
>
>
>You cannot rebroadcast Public Saftey on Ham freqs.  I'll give you a classic
>example in Michigan when I was at a meeting...
>
>Woman unknown was rebroadcasting police locations where the RADAR speed
>traps on 11 Meters CB CH. 19  needless to say Sheriff got ahold of this and
>arrested her and she was in Jail, everything consfiscated.
>
>doesn't matter whats being heard John Q. Public finds that you 
>retransmitted
>a traffic Stop for a burned out light bulb or a speeding ticket, he will be
>after you, and the court can fine you or have you making Martha Stewarts
>Designer Plates to hang on cars.
>
>M. H.
>
>- Original Message -
>From: "RileyNRachel Frazee" <[EMAIL PROTECTED]>
>To: 
>Sent: Monday, January 03, 2005 8:12 PM
>Subject: [Repeater-Builder] VX2000U repeater
>
>
> >
> >
> >
> > I have a VX 2000 U vertex 25 watt radio. just out of curiousity can it 
>be
> > hooked up to a scanner and repeat what the scanner is recieving. it has 
>a
> > 9
> > pin connector on the back side of the radio and is used for various 
>things
> > one thing is audio in. these radios can be connected to make a repeater, 
>i
> > do know that. is it possible to connect a Scanner or another kind of 
>radio
> > to it.? thanks for your replies in advance...
> >
> > Hope my question isnt totally stupid.
> >
> > _
> > Express yourself instantly with MSN Messenger! Download today - it's 
>FREE!
> > http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
> >
>
>
>
>
>
>
>Yahoo! Groups Links
>
>
>
>
>
>
>

_
Express yourself instantly with MSN Messenger! Download today - it's FREE! 
hthttp://messenger.msn.click-url.com/go/onm00200471ave/direct/01/








 
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Re: [Repeater-Builder] Need KXN1052A UHF Micor Channel Element

2005-01-04 Thread Neil McKie


  Hi Larry, 

  I believe the TLN1124A Channel Element was used in the 0.0002% 
 field conversion on the J74BBY base and repeater station.  I'll 
 have to look it up to be certain.  

  Hope this helps, 

  Neil - WA6KLA 

"[EMAIL PROTECTED]" wrote:
> 
> I recently picked up a UHF MICOR 75-Watt Repeater which has the correct
> KXN1024A Receive Channel Element, but needs the KXN1052A Transmit Channel
> Element. It came with a gold-colored TLN1124A Element in the transmitter,
> which I don't believe was intended to go in a MICOR - I haven't been able
> to find that numbered element in any of my MICOR manuals. I think someone
> just stuck it in the transmitter because it was a UHF Transmit Channel
> Element and it physically fit in the exciter.
> 
> Anyone have a spare KXN1052A?
> 
> Thanks,
> Larry
> 
> 
> mail2web - Check your email from the web at
> http://mail2web.com/ .
> 
> 
> Yahoo! Groups Links
> 
> 
> 
>





 
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Re: [Repeater-Builder] VX2000U repeater

2005-01-04 Thread Mark Holman

You cannot rebroadcast Public Saftey on Ham freqs.  I'll give you a classic 
example in Michigan when I was at a meeting...

Woman unknown was rebroadcasting police locations where the RADAR speed 
traps on 11 Meters CB CH. 19  needless to say Sheriff got ahold of this and 
arrested her and she was in Jail, everything consfiscated.

doesn't matter whats being heard John Q. Public finds that you retransmitted 
a traffic Stop for a burned out light bulb or a speeding ticket, he will be 
after you, and the court can fine you or have you making Martha Stewarts 
Designer Plates to hang on cars.

M. H.

- Original Message - 
From: "RileyNRachel Frazee" <[EMAIL PROTECTED]>
To: 
Sent: Monday, January 03, 2005 8:12 PM
Subject: [Repeater-Builder] VX2000U repeater


>
>
>
> I have a VX 2000 U vertex 25 watt radio. just out of curiousity can it be
> hooked up to a scanner and repeat what the scanner is recieving. it has a 
> 9
> pin connector on the back side of the radio and is used for various things
> one thing is audio in. these radios can be connected to make a repeater, i
> do know that. is it possible to connect a Scanner or another kind of radio
> to it.? thanks for your replies in advance...
>
> Hope my question isnt totally stupid.
>
> _
> Express yourself instantly with MSN Messenger! Download today - it's FREE!
> http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
>
>
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>
> 





 
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Re: [Repeater-Builder] Mobile Repeaters- Another Case History

2005-01-04 Thread Mark Holman

Just another freindly reminder how important Amateur Radio really is makes 
cause for a good argument if anyone questions how its really done.

maybe we should teach the Military how to be Hams & show them how radio 
works..



M. H.

- Original Message - 
From: "Eric Lemmon" <[EMAIL PROTECTED]>
To: 
Sent: Monday, January 03, 2005 10:15 PM
Subject: Re: [Repeater-Builder] Mobile Repeaters- Another Case History


>
> I had planned to sit on the sidelines and enjoy the spirited dialog, but
> Jim brought up a point which needs to be chiseled in stone:
> Communications vans are NOT the ideal environment for a repeater!
>
> Case in point:  A nearby Air Force Base has a mobile command post which
> is, for all intents and purposes, a communications van.  I invited the
> officer in charge of this vehicle to bring it out to a radio club
> meeting for a "show and tell" to which he readily agreed.  It was a
> wonderful experience for the members of my Amateur Radio Club to
> witness, first hand, the superior technology that the communication
> wizards had employed to create this masterpiece of emergency capability.
>
> Our joy at observing this epitome of radio communications capability was
> diminished when one of the hams asked what all of the antennas (UHF
> mobile 3dB gain) lined up, 10 inches apart at the rear of the trailer,
> were used for.  The officer replied that each of the antennas was
> connected to a separate Motorola Astro Digital Spectra radio, so that
> multiple conversations could be carried on, using the Base's UHF trunked
> radio system.  When asked if two or more conversations had ever been
> handled at one time, the answer was, "Uh, no, for some reason we can
> only talk on one radio at a time."  DUH, Hello!?
>
> Rest assured, your local, state, or federal taxpayer dollars are being
> spent for fiascos such as this, simply because these communications
> vans/trailers/command posts are seldom being designed and engineered by
> radio-savvy people, but by catalog browsers and bean-counters.  Not only
> is a 10-inch spacing between the antennas of two same-band transceivers
> an invitation to disaster, not to mention potential damage to nearby
> radios, but none of the comm van designers seemed to understand the
> realities of desense and bandpass filtering.
>
> Of course, it is a challenge to install bandpass filters on
> frequency-agile radios, but if you want to operate independently in a
> dense RF environment, you must design your system accordingly.  The
> primary channels should be on single-frequency radios, with extremely
> tight bandpass filtering on all receive frequencies and, if necessary,
> on all transmit frequencies.
>
> When properly designed, a communications van/trailer/command post can
> operate simultaneously on a multitude of frequencies, bands, and
> emissions.  Unfortunately, far too many such installations are doomed to
> failure before a switch is thrown.
>
> 73, Eric Lemmon WB6FLY
>
> "Jim B." wrote:
>>
>> Running that much power in a communications van *WILL, REPEAT, WILL*,
>> cause interference to other radios in the van, and is TOTALLY
>> UNECESSARY! 10-20 watts is PLENTY for a 'portable' repeater.
>> And in most communcation van environments, there is not enough room for
>> anything the size of a 2M or even a 220 duplexer. A 10 watt UHF repeater
>> in a communcations van with a 3dB gain antenna on 30' to 60' of mast is
>> quite adequate for anything you would need a repeater in a comm-van for.
>> If you need more coverage then that, you need to deploy more then just a
>> comm-van anyway.
>> Of the active comm-vans I am familiar with, only one has a repeater on
>> board, and it never gets used in a response, cause it usually causes
>> more problems then it cures, to the extent that they are thinking of
>> pulling it.
>> --
>> Jim Barbour
>> WD8CHL
>>
>>
>> Yahoo! Groups Links
>>
>>
>>
>>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>
> 





 
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RE: [Repeater-Builder] System Status, west

2005-01-04 Thread Mike Mullarkey

Neil,
It is called built in guaranteed profit.

Oregon Repeater Linking Group
Mike Mullarkey
6539 E Street
Springfield, OR 97478
541-747-1303
[EMAIL PROTECTED]
www.orlg.org
 
 

-Original Message-
From: Neil McKie [mailto:[EMAIL PROTECTED] 
Sent: Monday, January 03, 2005 3:12 PM
Subject: [Repeater-Builder] System Status, west



  ... snip ... 

> -   -   -   -   -   
> If only Bill Gates had a nickel for every time Windows crashed.
> OH! Wait!  he does!





 
Yahoo! Groups Links



 







 
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Re: [Repeater-Builder] Mobile Repeaters- Another Case History

2005-01-04 Thread Eric Lemmon

I had planned to sit on the sidelines and enjoy the spirited dialog, but
Jim brought up a point which needs to be chiseled in stone: 
Communications vans are NOT the ideal environment for a repeater!

Case in point:  A nearby Air Force Base has a mobile command post which
is, for all intents and purposes, a communications van.  I invited the
officer in charge of this vehicle to bring it out to a radio club
meeting for a "show and tell" to which he readily agreed.  It was a
wonderful experience for the members of my Amateur Radio Club to
witness, first hand, the superior technology that the communication
wizards had employed to create this masterpiece of emergency capability.

Our joy at observing this epitome of radio communications capability was
diminished when one of the hams asked what all of the antennas (UHF
mobile 3dB gain) lined up, 10 inches apart at the rear of the trailer,
were used for.  The officer replied that each of the antennas was
connected to a separate Motorola Astro Digital Spectra radio, so that
multiple conversations could be carried on, using the Base's UHF trunked
radio system.  When asked if two or more conversations had ever been
handled at one time, the answer was, "Uh, no, for some reason we can
only talk on one radio at a time."  DUH, Hello!?

Rest assured, your local, state, or federal taxpayer dollars are being
spent for fiascos such as this, simply because these communications
vans/trailers/command posts are seldom being designed and engineered by
radio-savvy people, but by catalog browsers and bean-counters.  Not only
is a 10-inch spacing between the antennas of two same-band transceivers
an invitation to disaster, not to mention potential damage to nearby
radios, but none of the comm van designers seemed to understand the
realities of desense and bandpass filtering.

Of course, it is a challenge to install bandpass filters on
frequency-agile radios, but if you want to operate independently in a
dense RF environment, you must design your system accordingly.  The
primary channels should be on single-frequency radios, with extremely
tight bandpass filtering on all receive frequencies and, if necessary,
on all transmit frequencies.

When properly designed, a communications van/trailer/command post can
operate simultaneously on a multitude of frequencies, bands, and
emissions.  Unfortunately, far too many such installations are doomed to
failure before a switch is thrown.

73, Eric Lemmon WB6FLY

"Jim B." wrote:
> 
> Running that much power in a communications van *WILL, REPEAT, WILL*,
> cause interference to other radios in the van, and is TOTALLY
> UNECESSARY! 10-20 watts is PLENTY for a 'portable' repeater.
> And in most communcation van environments, there is not enough room for
> anything the size of a 2M or even a 220 duplexer. A 10 watt UHF repeater
> in a communcations van with a 3dB gain antenna on 30' to 60' of mast is
> quite adequate for anything you would need a repeater in a comm-van for.
> If you need more coverage then that, you need to deploy more then just a
> comm-van anyway.
> Of the active comm-vans I am familiar with, only one has a repeater on
> board, and it never gets used in a response, cause it usually causes
> more problems then it cures, to the extent that they are thinking of
> pulling it.
> --
> Jim Barbour
> WD8CHL
> 
> 
> Yahoo! Groups Links
> 
> 
> 
>




 
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[Repeater-Builder] Re: MSR2000 PA Problems

2005-01-04 Thread Gary


Hello,

I only have some experience with a VHF MSR. Skipp sounds like the 
one to help you with a UHF. I'm not sure what originally failed on 
my VHF PA, but it sure toasted the board. Burned resistors, 
capacitors, and the finals. It almost looke like it took a lightning 
hit, but it failed in the middle of January a couple years ago. Its 
not impossible to get lighting in the dead of winter in Oregon, but 
it was a nice CAVU sunny day when it did fail.

Gary KB7TRP

--- In Repeater-Builder@yahoogroups.com, "N9WYS" <[EMAIL PROTECTED]> wrote:
> Gary, Skipp and/or anyone else,
> 
> I'm just curious - where is the failure occurring in your PA?  I 
was also
> running an MSR2000 (albeit on UHF) and I keep getting a failure at 
the
> harmonic filter on the antenna output side.  (Kept melting the 
connection.)
> I've since taken the machine off the air and replaced it with a 
back-up.
> The backup has been happy as a clam for about 5 months, whereas 
the MSR
> would fail in about 4 - 6 weeks time.
> 
> If replacing parts in the PA will alleviate my troubles, can 
someone point
> me in the right direction?  I'd be willing to scrounge up an old 
UHF
> Motorola Mitrek and cannibalize it to get rid of the headaches I'm 
suffering
> now.
> 
> -Original Message-
> From: Gary [mailto:[EMAIL PROTECTED] 
> Sent: Monday, January 03, 2005 7:55 PM
> To: Repeater-Builder@yahoogroups.com
> Subject: [Repeater-Builder] Re: MSR2000 PA Problems
> 
> 
> 
> --- In Repeater-Builder@yahoogroups.com, "skipp025" 
<[EMAIL PROTECTED]> 
> wrote:
> > 
> > > "Gary" <[EMAIL PROTECTED]> wrote:
> > > About a year and a half ago I replaced the whole board 
> > > on my VHF MSR2000 110 watt NCD PA. (My PA had more 
> > > problems than just the transistors) I used the PA board 
> > > out of a 110 watt mitrek mobile.
> > 
> > Tis' the cost effective way if you have the skills, 
> > proper tools, bright lights, decafe coffee and knowledge..
> > 
> > > It took me an afternoon to do it as I recall. I had to 
> > > remove the power control circuitry and change some 
> > > values of some resistors on the input side of the mobile 
> > > PA, but it still works great today with a nice clean output.
> > 
> > The time required seriously depends on the model and 
> > band of operation. Double the time when dealing with the 
> > UHF ceramic substrates. 
> > 
> > > MSR2000 PA's are notorius for failing, especially the 
> > > NCD units. 
> > 
> > What is an "NCD unit"?
> > 
> > > You could not back the power down enough and still 
> > > maintain a clean output, no matter how much air you 
> > > blew on and out of the PA. 
> > 
> > ..?
> > 
> > Power reduction is simply done with the pot, if you 
> > require less than the control circuit will handle, 
> > simply bypass the final stage. Most RF amplifiers 
> > work better at the nominal operational values. 
> > 
> > 
> > > The CD units faired a little better, but those 
> > > darn ham operators could fry 
> > > them too! Ha! Ha! 
> > > Gary  KB7TRP
> > 
> > Only the Micor style msr pa's seem to be trouble below 
> > 150Mhz. I've never had a 110 watt vhf intermittent duty 
> > cycle pa fail when tuned down to 60 watts. Same with 
> > the high power (semi rare) Paging MSR PA. 
> > 
> > The fly in the vhf msr soup is the high split msr 
> > micor style pa. It's not happy below 150Mhz without 
> > serious power reduction (or modification). 
> > 
> > cheers, 
> > skipp
> 
> Hi Skipp,
> 
> You are obviously in the business, so needless to say my ignorance 
> is probably showing.
> My MSR has the TLD2532A 110 watt intermittent PA. NCD is more my 
> terminology (non continuous duty) than anything else. I got into 
the 
> habit of refering to an intermittent PA as non continuous duty 
(NCD) 
> by hanging around another tech that used it. He was also the one 
> that filled me in on MSRs' PA history. (however right or wrong the 
> info was)
> 
> I was running my first PA at 60 watts when it failed. The only 
thing 
> different that I'm doing now than before, is I am using fans to 
blow 
> air out of the cabinet top side vents, plus a fan blowing across 
the 
> PA heat sink fins. Before, I was just blowing accross the heat 
sink 
> fins only. I'm not sure how efficient the PA heat sink fan is, 
> because I had to do some creative engineering to get a fan mounted 
to
> blow up the fins from the bottom. My site owner requires repeaters 
> to be in cabinets with covers on, and you would know how little 
room
> there is to get a fan mounted to blow on the MSR PA with the front 
> cover on the cabinet and still do some serious air movement. It 
does 
> work and looks somewhat professional.
> This repeater was getting heavy use at the first PA failure, but 
now 
> not as much use. This may have something to do with its'longevity 
> now.
> 
> Gary  KB7TRP
> 
> 
> 
> 
> 
> 
> 
> 
> 
>  
> Yahoo! Groups Links







 
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[Repeater-Builder] Need KXN1052A UHF Micor Channel Element

2005-01-04 Thread [EMAIL PROTECTED]

I recently picked up a UHF MICOR 75-Watt Repeater which has the correct
KXN1024A Receive Channel Element, but needs the KXN1052A Transmit Channel
Element. It came with a gold-colored TLN1124A Element in the transmitter,
which I don't believe was intended to go in a MICOR - I haven't been able
to find that numbered element in any of my MICOR manuals. I think someone
just stuck it in the transmitter because it was a UHF Transmit Channel
Element and it physically fit in the exciter.

Anyone have a spare KXN1052A?

Thanks,
Larry





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Re: [Repeater-Builder] Rusty Bolt effect and noise floor questions

2005-01-04 Thread mch

Ouch! Using that on a tower can be life threatening (literally). WD-40
tends to make metal very slippy. If you get some on your gloves or
shoes, your trip down may be faster than you want and you won't like the
sudden stop at the bottom.

Joe M.

Joe wrote:
> 
> Water has been used to spray on joints to see if the
> noise goes away.  You can also use WD-40 to spray the
> joints, but that's up to the tower owner as it can
> make a mess.




 
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Re: [Repeater-Builder] Rusty Bolt effect and noise floor questions

2005-01-04 Thread Joe

Yes, please reread my message, it's up to the tower owner and application 
MUST be sparingly.

At 06:23 PM 1/3/2005, you wrote:

>Ouch! Using that on a tower can be life threatening (literally). WD-40
>tends to make metal very slippy. If you get some on your gloves or
>shoes, your trip down may be faster than you want and you won't like the
>sudden stop at the bottom.
>
>Joe M.
>
>Joe wrote:
> >
> > Water has been used to spray on joints to see if the
> > noise goes away.  You can also use WD-40 to spray the
> > joints, but that's up to the tower owner as it can
> > make a mess.
>
>
>
>
>
>Yahoo! Groups Links
>
>
>
>

All outgoing email scanned with Norton AntiVirus2004.






 
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RE: [Repeater-Builder] Re: MSR2000 PA Problems

2005-01-04 Thread N9WYS

Gary, Skipp and/or anyone else,

I'm just curious - where is the failure occurring in your PA?  I was also
running an MSR2000 (albeit on UHF) and I keep getting a failure at the
harmonic filter on the antenna output side.  (Kept melting the connection.)
I've since taken the machine off the air and replaced it with a back-up.
The backup has been happy as a clam for about 5 months, whereas the MSR
would fail in about 4 - 6 weeks time.

If replacing parts in the PA will alleviate my troubles, can someone point
me in the right direction?  I'd be willing to scrounge up an old UHF
Motorola Mitrek and cannibalize it to get rid of the headaches I'm suffering
now.

-Original Message-
From: Gary [mailto:[EMAIL PROTECTED] 
Sent: Monday, January 03, 2005 7:55 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: MSR2000 PA Problems



--- In Repeater-Builder@yahoogroups.com, "skipp025" <[EMAIL PROTECTED]> 
wrote:
> 
> > "Gary" <[EMAIL PROTECTED]> wrote:
> > About a year and a half ago I replaced the whole board 
> > on my VHF MSR2000 110 watt NCD PA. (My PA had more 
> > problems than just the transistors) I used the PA board 
> > out of a 110 watt mitrek mobile.
> 
> Tis' the cost effective way if you have the skills, 
> proper tools, bright lights, decafe coffee and knowledge..
> 
> > It took me an afternoon to do it as I recall. I had to 
> > remove the power control circuitry and change some 
> > values of some resistors on the input side of the mobile 
> > PA, but it still works great today with a nice clean output.
> 
> The time required seriously depends on the model and 
> band of operation. Double the time when dealing with the 
> UHF ceramic substrates. 
> 
> > MSR2000 PA's are notorius for failing, especially the 
> > NCD units. 
> 
> What is an "NCD unit"?
> 
> > You could not back the power down enough and still 
> > maintain a clean output, no matter how much air you 
> > blew on and out of the PA. 
> 
> ..?
> 
> Power reduction is simply done with the pot, if you 
> require less than the control circuit will handle, 
> simply bypass the final stage. Most RF amplifiers 
> work better at the nominal operational values. 
> 
> 
> > The CD units faired a little better, but those 
> > darn ham operators could fry 
> > them too! Ha! Ha! 
> > Gary  KB7TRP
> 
> Only the Micor style msr pa's seem to be trouble below 
> 150Mhz. I've never had a 110 watt vhf intermittent duty 
> cycle pa fail when tuned down to 60 watts. Same with 
> the high power (semi rare) Paging MSR PA. 
> 
> The fly in the vhf msr soup is the high split msr 
> micor style pa. It's not happy below 150Mhz without 
> serious power reduction (or modification). 
> 
> cheers, 
> skipp

Hi Skipp,

You are obviously in the business, so needless to say my ignorance 
is probably showing.
My MSR has the TLD2532A 110 watt intermittent PA. NCD is more my 
terminology (non continuous duty) than anything else. I got into the 
habit of refering to an intermittent PA as non continuous duty (NCD) 
by hanging around another tech that used it. He was also the one 
that filled me in on MSRs' PA history. (however right or wrong the 
info was)

I was running my first PA at 60 watts when it failed. The only thing 
different that I'm doing now than before, is I am using fans to blow 
air out of the cabinet top side vents, plus a fan blowing across the 
PA heat sink fins. Before, I was just blowing accross the heat sink 
fins only. I'm not sure how efficient the PA heat sink fan is, 
because I had to do some creative engineering to get a fan mounted to
blow up the fins from the bottom. My site owner requires repeaters 
to be in cabinets with covers on, and you would know how little room
there is to get a fan mounted to blow on the MSR PA with the front 
cover on the cabinet and still do some serious air movement. It does 
work and looks somewhat professional.
This repeater was getting heavy use at the first PA failure, but now 
not as much use. This may have something to do with its'longevity 
now.

Gary  KB7TRP









 
Yahoo! Groups Links



 







 
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Re: [Repeater-Builder] Portable Repeater - A Case History

2005-01-04 Thread Bob Dengler

At 1/2/2005 09:03 PM, you wrote:

>Kevin,
>
>Yes, it is asymmetrical.  Each of the three high-pass resonators has two
>black plastic plugs near the connector end, while the low-pass
>resonators each have one plastic plug.  A Celwave engineer told me that
>the 5085-1 is manufactured to order, and that the coupling loops are
>factory-adjusted through these ports for optimum return loss at a
>particular split, and for a certain band segment.  As a result, the
>5085-1 is not really tunable over the entire high VHF band.  I don't see
>that as a negative, since it was ordered specifically for this portable
>repeater application and is not likely to require retuning.
>
>73, Eric Lemmon WB6FLY

I'll have to take a closer look at mine (this is the one that I bought & 
Kevin swept at Dayton '03).  Turns out it's asymmetrical as well (84 dB 
notch on high freq., 69 dB on low).  Loss is higher on the low side as well 
(1.8 vs. 1.1 dB), so tighter coupling on the low pass/high notch side makes 
sense.

No need to make any changes for my application, though, since TX happens to 
be the low freq.  And no that had nothing to do with which freq. was picked 
to be TX for the portapeater pair in the SoCal 2M bandplan!

Bob NO6B






 
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[Repeater-Builder] Re: MSR2000 PA Problems

2005-01-04 Thread Gary


--- In Repeater-Builder@yahoogroups.com, "skipp025" <[EMAIL PROTECTED]> 
wrote:
> 
> > "Gary" <[EMAIL PROTECTED]> wrote:
> > About a year and a half ago I replaced the whole board 
> > on my VHF MSR2000 110 watt NCD PA. (My PA had more 
> > problems than just the transistors) I used the PA board 
> > out of a 110 watt mitrek mobile.
> 
> Tis' the cost effective way if you have the skills, 
> proper tools, bright lights, decafe coffee and knowledge..
> 
> > It took me an afternoon to do it as I recall. I had to 
> > remove the power control circuitry and change some 
> > values of some resistors on the input side of the mobile 
> > PA, but it still works great today with a nice clean output.
> 
> The time required seriously depends on the model and 
> band of operation. Double the time when dealing with the 
> UHF ceramic substrates. 
> 
> > MSR2000 PA's are notorius for failing, especially the 
> > NCD units. 
> 
> What is an "NCD unit"?
> 
> > You could not back the power down enough and still 
> > maintain a clean output, no matter how much air you 
> > blew on and out of the PA. 
> 
> ..?
> 
> Power reduction is simply done with the pot, if you 
> require less than the control circuit will handle, 
> simply bypass the final stage. Most RF amplifiers 
> work better at the nominal operational values. 
> 
> 
> > The CD units faired a little better, but those 
> > darn ham operators could fry 
> > them too! Ha! Ha! 
> > Gary  KB7TRP
> 
> Only the Micor style msr pa's seem to be trouble below 
> 150Mhz. I've never had a 110 watt vhf intermittent duty 
> cycle pa fail when tuned down to 60 watts. Same with 
> the high power (semi rare) Paging MSR PA. 
> 
> The fly in the vhf msr soup is the high split msr 
> micor style pa. It's not happy below 150Mhz without 
> serious power reduction (or modification). 
> 
> cheers, 
> skipp

Hi Skipp,

You are obviously in the business, so needless to say my ignorance 
is probably showing.
My MSR has the TLD2532A 110 watt intermittent PA. NCD is more my 
terminology (non continuous duty) than anything else. I got into the 
habit of refering to an intermittent PA as non continuous duty (NCD) 
by hanging around another tech that used it. He was also the one 
that filled me in on MSRs' PA history. (however right or wrong the 
info was)

I was running my first PA at 60 watts when it failed. The only thing 
different that I'm doing now than before, is I am using fans to blow 
air out of the cabinet top side vents, plus a fan blowing across the 
PA heat sink fins. Before, I was just blowing accross the heat sink 
fins only. I'm not sure how efficient the PA heat sink fan is, 
because I had to do some creative engineering to get a fan mounted to
blow up the fins from the bottom. My site owner requires repeaters 
to be in cabinets with covers on, and you would know how little room
there is to get a fan mounted to blow on the MSR PA with the front 
cover on the cabinet and still do some serious air movement. It does 
work and looks somewhat professional.
This repeater was getting heavy use at the first PA failure, but now 
not as much use. This may have something to do with its'longevity 
now.

Gary  KB7TRP









 
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RE: [Repeater-Builder] Moving R100 to ham band?

2005-01-04 Thread Ted Leonard

What is the Russian URL for the RSS?

Thanks,
Ted n2isq

-Original Message-
From: n1ist [mailto:[EMAIL PROTECTED]
Sent: Sunday, January 02, 2005 9:54 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Moving R100 to ham band?




The repeater fairies just dropped off a Moto R100, model Q2932A on
462.8624/468.8625 with a code of 051.  It has options L168ANSP,
L658AASP, and L143AGSP.  How hard is it to move this to 447.175?  I
have the RSS from the Russian site and the notes from Batlabs; I will
build the programming cable tomorrow.  Do I need to retune the RF side
also?  Where do I interface a controller?  I need to set this up to
fill in for our main repeater until I can get to the site and figure
out why it is off the air.  Thanks.

/mike
[EMAIL PROTECTED]








 
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[Repeater-Builder] Jim B & Joe M.

2005-01-04 Thread NØATH






Want to say thanks for the info to Jim B. 
and Ted M. for the info on the Flexars.
Relayed it to my friend - I don't know yet what he 
wants to do.
 
NØATH / Dave













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[Repeater-Builder] FS List PARTS

2005-01-04 Thread Q


Bourns 500k presicion linear pot w/999turn vernier,NOS
B&W miniductors;2-3003,2-3006,2-3010,1-3007,1-3015,1-3020,1-6702 NIB
1-Johnson 229-203 ROLLER INDUCTOR,used
1-L402? LARGE ROLLER INDUCTOR,used,shunt type
2-Large Cardwell Air Variable caps,several smaller ones,used
2-Hammarlund MC-100S air variables,NOS
1-General Radio W-2 Variac,NIB
4-811A TUBES,NIB
2-866A TUBES,NIB
1-J3RP1 scope tube,NIB
3-Eimac 4-65 Tubes,2 sockets,used
6-4CX250B tubes,used
1-4X150A tube and socket,used
3-2C39A tubes,used
Hundreds more,CALL
2-Guardian solid state time delay modules,0-50 seconds,3-12VDC input,10 
amp,NOS
2-Glassmike .03mfd,10KVDC caps,NOS
3-6PDT,12VDC relays,NOS
50-Philips 3700UF,400VDC Electrolytic caps,NOS
36-Mallory 2400MFD,100VDC Electrolytic Caps,NOS
45-Philips 8200UF,50VDC Electrolytic caps,NOS
200-680uf,50vdc electrolytics,NOS
4-Centralab 1200UF,150VDC Electrolytic caps,with brackets,NOS
1500-Philips .01uf,400VDC metal film caps,NOS
100-Mallory .2UF,600VDC,NOS
8-Kemet 2UF,400VDC Electrolytic caps,NOS
30-Component Research 2.5UF,300VDC electrolytic caps,NOS
16-nichicon 3.3UF,630VDC caps,NOS
6-Mallory 10UF,660VAC Caps,NOS
15-Unicon 3300MFD,16V electrolytic caps,NOS
250-16K,2W carbon resistors NOS
325-11K,2W carbon resistors NOS
2-Ohmite 1K,225W adj. vitreous NOS
1-Memcor 50 ohm,150W vitreous pot
Thousands of 1/4 and 1/8 watt resistors,CALL
Thousands of feed-thru caps and filters,CALL
4-Honeywell MHT2205 transistors,HUGE!,NOS
2-Honeywell 2N575,NOS
7-Delco 2N1522,NOS
1-Delco 2N1523,NOS
Misc 
transistors,NOS-2n174,2n389,2n338a,2n1613,2n527,2n697,2n491,2n292,2n336a,
2n335a,2n657,2n957,2n3125,2n438a,2n1672n706,2n1613,2n1132
gt34,2n109,2n697,2n692,2n26462n480a,2n2323
Misc 
diodes,NOS-1n1203,1n1130,1n2157,1n250a,1n1116,1n441b,1n3434a,1n442b1n489
1n645,1n91,1n540,1n561,1n2984a,1n2827b,1n2813b,1n1595a,1n561,
in1597a
Misc toroidal cores,two engineering kits
Misc trimmer caps,air,mica,glass,Hi-Q

TOO MUCH MORE TO LIST,QTY DISCOUNTS,NO ROOM LEFT!!!
Send inquiries to  res0s7nd"at"verizon"dot"net
Last one,thanks list owners for the bandwidth...





 
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Re: [Repeater-Builder] O.T. Is it just me?

2005-01-04 Thread Mark Holman

Just Get a Spam Blocker or Upgrade to WIN XP SP II   I love it !
M. H.

- Original Message - 
From: "John Everson" <[EMAIL PROTECTED]>
To: 
Sent: Sunday, January 02, 2005 2:06 PM
Subject: [Repeater-Builder] O.T. Is it just me?


> 
> 
> Happy New Year to the group.
> 
> Is it just me, or is someone else having the Yahoo adverts. block 
> part of the message text on some messages? I think that this has 
> happened before but it went away on its own.
> 
> At least that is as much as my feeble mind lets me remember.
> 
> 73,John
> 
> 
> 
> 
> 
> 
> 
> 
> Yahoo! Groups Links
> 
> 
> 
> 
> 
> 
> 
>




 
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RE: [Repeater-Builder] Mobile Repeaters?

2005-01-04 Thread jack swift

this is going to sound smart-$%^ but isn't really intended that way...

why bother putting a repeater in 'net control'? 
1. if you can hear them simplex, you don't need a repeater.
2. if you can't hear them, 'being' a repeater won't let you hear them.
3. a directed net means that they don't get to 'chat' with the other 
teams.

if your 'mobile communications van' is like ours, it is basically a 
mobile
command post where i am able to contact all the field units regardless of
their location. since i'm 'important' and so are the other people in 'the
bus', i park where we can set up the lounge chairs and tables and have our
meals delivered.  actually, i set up in an area which is readily
accessible by the people who are really important -- the people reporting
for field assignments... but that rules out the remote mountaintops which
would be appropriate for installing repeaters... 30' motorhomes
don't follow deer trails all that well - especially between trees...

instead, i use existing (high-quality) repeaters on existing
(high-altitude) towers to do the work for me EXCEPT where we have coverage
problems. in those instances, i can send a couple of loonies with 4x4's up
on the #$%^ ridge that's in the way. they have crossband rigs and can park
a decent distance apart. for the wierd situations, we have a portable
repeater with 'regular' duplexers. it's a rock-bound 10-watt oldie (yaesu
ftr2410, i think). we can carefully (don't want to forcibly re-tune the
duplexers) cart it up to a ridge with an ugly battery and a 24' mast with
unity gain antenna to get the maximum vertical beamwidth. those noisy ATV's
work wonders. 10 watts is enough considering that we're working with 5 watt
handhelds in the field teams.




>Dakota Summerhawk wrote:
>
>> Is the best way to have a mobile repeater up and running with two mobile
radios and a duplexer? Looking for a way to be able to run a couple of
repeaters, one VHF, one UHF for a mobile communications van. Can anyone
recommend ways to cut down on weight and space? Thanks




Jack Swift
I.E. Swift Co.  
402 Shelden Ave. 
Houghton, MI 49931
906-482-0530, 0531, 7766






 
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[Repeater-Builder] VX2000U repeater

2005-01-04 Thread RileyNRachel Frazee



I have a VX 2000 U vertex 25 watt radio. just out of curiousity can it be 
hooked up to a scanner and repeat what the scanner is recieving. it has a 9 
pin connector on the back side of the radio and is used for various things 
one thing is audio in. these radios can be connected to make a repeater, i 
do know that. is it possible to connect a Scanner or another kind of radio 
to it.? thanks for your replies in advance...

Hope my question isnt totally stupid.

_
Express yourself instantly with MSN Messenger! Download today - it's FREE! 
http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/








 
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Re: [Repeater-Builder] Mobile Repeaters?

2005-01-04 Thread Neil McKie


  Hey Mike, 

  Thirty plus years ago, I built up a portable 2 meter repeater 
 for one of the Baja 500 off road races in Baja California.  

  I used a pair of Motorola Motrans - U43MSN - rated at 30 watts out 
 - continuous duty.  I tuned them up so each could replace the other 
 in case either the receiver or the transmitter should quit. 

  If one end quit, swap units and Channel Elements and back on the 
 air.  The interconnect was one pair of wires - included the 
 transmitter keying and audio.  

  Nothing ever quit ... and I still have the audio/transmitter 
 adapter keying boxes in the garage. 

  Neil 


Mike Morris WA6ILQ wrote:
> 
> Dakota...
> 
> Can your operational requirements be met by a
> station in a parked vehicle, or does it have to be
> operational while in motion?
> 
> Can your 2m repeater requirements be filled by a single
> channel solution?
> 
> Twenty years ago when UHF was not in use locally by the
> average ham we had a portable 2m repeater that in the first
> incarnation was made usable by two notch cavities - one for
> RX and one for TX.
> The radios then were 30 or 40w (I forget which) Motorola
> Motran mobiles, which would survive continuous duty at
> the 10w level.  With the cavities in line the antennas could
> be as close as 20 feet.
> 
> Later on we needed to use it and the cavities were not
> available, so we tried it anyway and by placing the RX
> radio and it's antenna 75 to 100 feet away it was usable
> with careful placement of the RX and TX.  In one case we
> put a full-size RV between the two and grounded the metal
> skin of the RV.
> 
> In your situation, if an im-mobile solution would work, I'd
> put a 2m antenna on a tripod mount coupled to an RX
> powered by a gellcell (maybe even with a solar panel
> plugged in).  A 100' cable would carry audio and PTT
> to the vehicle where the 10-30w TX would be.  And
> without cavities it could be frequency agile.  If you could
> scare up a couple of cavities you would limit yourself to
> one frequency but the performance would go up
> tremendously.
> 
> I could build it with stuff on the shelf -  a Motrac M-series
> receiver, and a split winding audio transformer would fit
> into a 50-cal ammo box.  If the Motrac RX was used (it
> has a passive front end and for a 20+ year old RX is really,
> really, really overload resistant) the biggest expense would
> be the crystal.  For the TX I'd use a GE MVP,  Mastr II or
> Exec II.
> 
> How much of a controller do you need?  You could probably
> get by with an ICS Basic at about $80
> See http://www.ics-ctrl.com
> Mike WA6ILQ
> 
> At 01:45 PM 1/3/05, you wrote:
> 
> >Cant drop the 2M side of things as a lot of hams don't
> >have 70CM around here and 2M will do what 70CM wont
> >in the mountains when runs and races require 2M am
> >looking at a few suggestions for the van right now that
> >might work.
> >Couple of emails on Motorola gear, either one or two
> >channel radios and a controller and duplexer for the
> >rigs that I need.
> >Thanks for all the help!
> >Dakota
> >
> >-Original Message-
> >From: Jim B. [mailto:[EMAIL PROTECTED]
> >Sent: Monday, January 03, 2005 1:50 PM
> >To: Repeater-Builder@yahoogroups.com
> >Subject: Re: [Repeater-Builder] Mobile Repeaters?
> >
> >
> >
> >Dakota Summerhawk wrote:
> >
> > > Is the best way to have a mobile repeater up and running with two
> > > mobile radios and a duplexer? Looking for a way to be able to run a
> > > couple of repeaters, one VHF, one UHF for a mobile communications van.
> > > Can anyone recommend ways to cut down on weight and space? Thanks
> > > Dakota
> > >
> >
> >Best way to cut space-forget about the VHF unit. For UHF, get a Kenwood
> >TKR-850 and a mobile duplexer. Keep the transmit power down to 20W or
> >less, more then that will cause problems with other radios in the van,
> >and get the antenna as far away from other antennas as possible,
> >preferably on a 30' or more mast.
> >
> >--
> >Jim Barbour
> >WD8CHL
> >
> >
> >
> >
> >
> >
> >Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
> >--
> >No virus found in this incoming message.
> >Checked by AVG Anti-Virus.
> >Version: 7.0.296 / Virus Database: 265.6.7 - Release Date: 12/30/2004
> >
> >
> >--
> >No virus found in this outgoing message.
> >Checked by AVG Anti-Virus.
> >Version: 7.0.296 / Virus Database: 265.6.7 - Release Date: 12/30/2004
> >
> >
> >
> >
> >
> >
> >
> >
> >Yahoo! Groups Links
> >
> >
> >
> >
> 
> 
> Yahoo! Groups Links
> 
> 
> 
>





 
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Re: [Repeater-Builder] Re: [Motorola] MSR2000 PA Transistors

2005-01-04 Thread Neil McKie


  I don't have an attic - but do have a garage ... a fairly large 
 garage. 

  Neil 

Mark Holman wrote:
> 
> Say Neil;
> XYL would have a fit If I did that ! and I still have 
> whatever in the Attic
> 
> M. H.
> 
> - Original Message -
> From: "Neil McKie" <[EMAIL PROTECTED]>
> To: 
> Sent: Monday, January 03, 2005 6:25 PM
> Subject: Re: [Repeater-Builder] Re: [Motorola] MSR2000 PA Transistors
> 
> >
> >
> >  People have been wondering why I seem to 'collect' all those old
> > used Motorola and GE radios.  I usually 'collect' them at swapmeets
> > when the sellers can't give them away (except to me.)
> >
> >  I finally unloaded almost all of the tube gear except one - even
> > donated a GE MT-16 to a friend in the San Francisco Bay area
> > sometime back.
> >
> >  Why not?  The manufacturers quit supporting them years ago.
> >
> >  I have Motorola back to the later Motracs, Mocom-70's, Micors and
> > Mitreks.
> >
> >  I have RCA to Series 700.
> >
> >  I have GE in Mastr-Pro (very nice radio) Exec II and Mastr II.
> >
> >  Those here who have seen my garage will ... groan ...
> >
> >  Get down to your local ham swapmeet and start catching up.  Of
> > course, you'll raise the price to me ... but the parts will be used
> > by someone and not hit the scrap yard.
> >
> >  Neil - WA6KLA
> >
> >
> > skipp025 wrote:
> >>
> >> Do what most of us are doing, buy used Motorola
> >> radios of the same era/type and lift the transistors
> >> from surplus radios.
> >>
> >> I purchased 40 used mitrek 110 watt radios for
> >> replacement UHF MSR PA Modules. Although the
> >> remove and replace process takes some 3 plus
> >> hours of serious work, the much lower cost
> >> offsets the financial pain.
> >>
> >> The same would apply with with the VHF pa, which
> >> also depends on whick of the 3 or 4 known VHF
> >> PA versions you have.
> >>
> >> Ebay and the surplus radio dealers are good part
> >> sources.
> >>
> >> cheers,
> >> skipp
> >> skipp025 at yahoo.com
> >> www.radiowrench.com/sonic
> >>
> >> > > Anyone know where I can find MSR2000 finals?
> >> > > I have a high band VHF MSR2000 with 2 blown
> >> > > finals (one set), and would like to replace
> >> > > all 4 if I can find a set of replacement transistors
> >>
> >>
> >
> >





 
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[Repeater-Builder] re: MSR2000 PA Problems

2005-01-04 Thread skipp025


> "Gary" <[EMAIL PROTECTED]> wrote:
> About a year and a half ago I replaced the whole board 
> on my VHF MSR2000 110 watt NCD PA. (My PA had more 
> problems than just the transistors) I used the PA board 
> out of a 110 watt mitrek mobile.

Tis' the cost effective way if you have the skills, 
proper tools, bright lights, decafe coffee and knowledge..

> It took me an afternoon to do it as I recall. I had to 
> remove the power control circuitry and change some 
> values of some resistors on the input side of the mobile 
> PA, but it still works great today with a nice clean output.

The time required seriously depends on the model and 
band of operation. Double the time when dealing with the 
UHF ceramic substrates. 

> MSR2000 PA's are notorius for failing, especially the 
> NCD units. 

What is an "NCD unit"?

> You could not back the power down enough and still 
> maintain a clean output, no matter how much air you 
> blew on and out of the PA. 

..?

Power reduction is simply done with the pot, if you 
require less than the control circuit will handle, 
simply bypass the final stage. Most RF amplifiers 
work better at the nominal operational values. 


> The CD units faired a little better, but those 
> darn ham operators could fry 
> them too! Ha! Ha! 
> Gary  KB7TRP

Only the Micor style msr pa's seem to be trouble below 
150Mhz. I've never had a 110 watt vhf intermittent duty 
cycle pa fail when tuned down to 60 watts. Same with 
the high power (semi rare) Paging MSR PA. 

The fly in the vhf msr soup is the high split msr 
micor style pa. It's not happy below 150Mhz without 
serious power reduction (or modification). 

cheers, 
skipp 







 
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[Repeater-Builder] [Fwd: [ham4sale] Books FS]

2005-01-04 Thread Q



I have the following books for sale:

1-ARRL handbook 1955 SOLD!
1-ARRL handbook 1968
1-FM Transmission and Reception by Rider&Uslan 1948 VGC
1-ARRL FM and Repeaters 1972
1-VHF/UHF Manual G.R.Jessop RSGB 1985
1-ARRL VHF Companion 1996
1-Rider Radio Operator License Q&A manual 1957 VGC
1-Microwave Handbook M.W.Dixon RSGB 1990
1-ARRL SSB for the Radio Amateur 1958
1-ARRL Advanced Class License manual 1987
1-ARRL Sattelite Experimenters Handbook 1990
1-ARRL public service communications manual
1-ARRL new ham recruitment program
1-ATV in a nutshell 1978
1-weather sattelite handbook 1987
1-ARRL Radio Frequency Interference 1984
1-ARRL license manual 1958
 
CONTACT ME DIRECT at res0s7ne"at"verizon"dot"net for pricing,thanks 4 lookin'














 
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RE: [Repeater-Builder] Mobile Repeaters?

2005-01-04 Thread Mike Morris WA6ILQ

Dakota...

Can your operational requirements be met by a
station in a parked vehicle, or does it have to be
operational while in motion?

Can your 2m repeater requirements be filled by a single
channel solution?

Twenty years ago when UHF was not in use locally by the
average ham we had a portable 2m repeater that in the first
incarnation was made usable by two notch cavities - one for
RX and one for TX.
The radios then were 30 or 40w (I forget which) Motorola
Motran mobiles, which would survive continuous duty at
the 10w level.  With the cavities in line the antennas could
be as close as 20 feet.

Later on we needed to use it and the cavities were not
available, so we tried it anyway and by placing the RX
radio and it's antenna 75 to 100 feet away it was usable
with careful placement of the RX and TX.  In one case we
put a full-size RV between the two and grounded the metal
skin of the RV.

In your situation, if an im-mobile solution would work, I'd
put a 2m antenna on a tripod mount coupled to an RX
powered by a gellcell (maybe even with a solar panel
plugged in).  A 100' cable would carry audio and PTT
to the vehicle where the 10-30w TX would be.  And
without cavities it could be frequency agile.  If you could
scare up a couple of cavities you would limit yourself to
one frequency but the performance would go up
tremendously.

I could build it with stuff on the shelf -  a Motrac M-series
receiver, and a split winding audio transformer would fit
into a 50-cal ammo box.  If the Motrac RX was used (it
has a passive front end and for a 20+ year old RX is really,
really, really overload resistant) the biggest expense would
be the crystal.  For the TX I'd use a GE MVP,  Mastr II or
Exec II.

How much of a controller do you need?  You could probably
get by with an ICS Basic at about $80
See http://www.ics-ctrl.com
Mike WA6ILQ

At 01:45 PM 1/3/05, you wrote:

>Cant drop the 2M side of things as a lot of hams don't
>have 70CM around here and 2M will do what 70CM wont
>in the mountains when runs and races require 2M am
>looking at a few suggestions for the van right now that
>might work.
>Couple of emails on Motorola gear, either one or two
>channel radios and a controller and duplexer for the
>rigs that I need.
>Thanks for all the help!
>Dakota
>
>-Original Message-
>From: Jim B. [mailto:[EMAIL PROTECTED]
>Sent: Monday, January 03, 2005 1:50 PM
>To: Repeater-Builder@yahoogroups.com
>Subject: Re: [Repeater-Builder] Mobile Repeaters?
>
>
>
>Dakota Summerhawk wrote:
>
> > Is the best way to have a mobile repeater up and running with two
> > mobile radios and a duplexer? Looking for a way to be able to run a
> > couple of repeaters, one VHF, one UHF for a mobile communications van.
> > Can anyone recommend ways to cut down on weight and space? Thanks
> > Dakota
> >
>
>Best way to cut space-forget about the VHF unit. For UHF, get a Kenwood
>TKR-850 and a mobile duplexer. Keep the transmit power down to 20W or
>less, more then that will cause problems with other radios in the van,
>and get the antenna as far away from other antennas as possible,
>preferably on a 30' or more mast.
>
>--
>Jim Barbour
>WD8CHL
>
>
>
>
>
>
>Yahoo! Groups Links
>
>
>
>
>
>
>
>--
>No virus found in this incoming message.
>Checked by AVG Anti-Virus.
>Version: 7.0.296 / Virus Database: 265.6.7 - Release Date: 12/30/2004
>
>
>--
>No virus found in this outgoing message.
>Checked by AVG Anti-Virus.
>Version: 7.0.296 / Virus Database: 265.6.7 - Release Date: 12/30/2004
>
>
>
>
>
>
>
>
>Yahoo! Groups Links
>
>
>
>





 
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