RE: [Repeater-Builder] IFR 1900 Schematics

[Eric Brownell]

Yes, I have two 1900's at the moment and had to replace the final output
MMIC in both of them. The original is an SHF-0186 made by Sirenza. As it's
no longer manufactured and Aeroflex wants almost $90 for this $3 part, I
replaced them with a Mini-Circuits ERA-6+. Since the ERA-6+ is a 5 volt unit
as opposed to the 8 volt original, I had to change a couple of dropping
resistors also.

 

After this along with a couple of other repairs and a complete calibration
they both work well and pass all of their self tests.

 

I just know that sooner or later I'll experience a failure on the one I keep
that will require a schematic to diagnose. Maybe by then Aeroflex will be
less possessive of the schematics.

 

Thanks, Eric

 

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of DCFluX
Sent: Tuesday, July 08, 2008 4:29 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] IFR 1900 Schematics

 

I couldn't find any. The block diagram for the COM-120C is kinda close.

If you transmitted into the Aux port, and the step attenuator was at a
fairly high level of output, you will need to replace the MMICs in the
generator module.

http://blog.

myspace.com/index.cfm?fuseaction=blog.view&friendID=85474861&blogID=39484826
7

On 7/8/08, w2zt <[EMAIL PROTECTED]  net> wrote:
> Does anyone know of a source for the IFR-1900 schematics? I have each
> of the Service, Calibration & Operating manuals, however, schematics
> are not within them.
>
> I assume this is because Aeroflex still supports the units for a
> lucrative fee and doesn't want competition.
>
> Thanks, Eric
>_,_._,___ 

Re: [Repeater-Builder] IFR 1000/1100 CRT

[Eric Brownell]

Yes, it is a 3RP1 and they appear to be in a number of scopes. Accordingly, 
they seem to be available from a few sources.

Thanks for the help,
Eric

  - Original Message - 
  From: [EMAIL PROTECTED] 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Tuesday, March 06, 2007 1:38 AM
  Subject: Re: [Repeater-Builder] IFR 1000/1100 CRT



  I got one on EBAY several years ago. I think it is a 3RP1A

  Chris
  N9LLO





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[Repeater-Builder] IFR 1000/1100 CRT

[Eric Brownell]

Does anyone know where a CRT for an IFR 1000 or 1100 service monitor can be 
scrounged up?

Thanks, Eric

[Repeater-Builder] IFR-1100S or GRM-114A

[Eric Brownell]

Hello List,

Does anyone know where I can acquire or download an IFR-1100S or GRM-114A 
service manual or even just a schematic? Thus far, all I've been able to find 
is a "calibration" document that has no schematic. Since my problem is power 
supply related, the 1000S manual available everywhere is of little use.

Thanks, Eric

[Repeater-Builder] Wavetek 3100 Service Monitor Manual(s)

[Eric Brownell]

Does anyone know where I might find a service manual, schematic, etc. for a 
Wavetek 3100 service monitor? I've searched the web to no avail.

Eric - W2ZT

RE: [Repeater-Builder] Inverting COS

[Eric Brownell]

Excellent & undeniably accurate point Sean!


-Original Message-
From: Sean Fitzharris [mailto:[EMAIL PROTECTED] 
Sent: Thursday, December 02, 2004 4:32 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Inverting COS



There is where the problem lies... your his elmer on this list.

I guess your down 20 points.

-Sean

On Thu, 2 Dec 2004, Neal Newman wrote:

> 
> Hey as an Elmer I teach my students electronic theory.
> His Elmer apparently has NOT. shame on Him minus -20 Elmer  for him.
> 
> 
> Jeff Otterson wrote:
> 
> > Neal Newman:
> >
> >You should be ashamed of yourself.
> >
> >Minus 10 Elmer points.
> >
> > Jeff
> >
> > At 11:44 PM 11/30/2004, you wrote:
> >
> > >Sorry I cannot resist  this one..
> > >
> > >  And you call yourself a Ham?
> > >  My wife the Novice could  answer that question.
> > >Basic Transistor theory..
> > >even an op-amp inverter
> > >  Her reply  isIf he does not know  how to invert the signal
> > >  he should not be building a repeater...!
> > >
> > >  Next question...
> > >
> > >.
> > >jay_kruckenberg wrote:
> > >
> > > >I have a Motorola radio that has an active low COS signal. I need
> > > >this to be an active high COS signal. Does anybody know how to build
> > > >a simple circuit that will invert the COS signal from a low to a
> > > >high signal?
> > > >
> > > >Thanks
> > > >
> > > >J
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >Yahoo! Groups Links
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >Yahoo! Groups Links
> > >
> > >
> > >
> > >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> 
> 
> 
> 
> 
> 
>  
> Yahoo! Groups Links
> 
> 
> 
>  
> 
> 
> 





 
Yahoo! Groups Links



 










 
Yahoo! Groups Links

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RE: [Repeater-Builder] Inverting COS

[Eric Brownell]

Just like you, I've now failed to resist voicing my wish that you'd been
successful at resisting your comments.

How very rude! How about showing a little support to a probable newbie, eh?

Eric
  

-Original Message-
From: Neal Newman [mailto:[EMAIL PROTECTED] 
Sent: Tuesday, November 30, 2004 8:45 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Inverting COS


Sorry I cannot resist  this one..

 And you call yourself a Ham?
 My wife the Novice could  answer that question.
Basic Transistor theory..
even an op-amp inverter
 Her reply  isIf he does not know  how to invert the signal
 he should not be building a repeater...!

 Next question...

.
jay_kruckenberg wrote:

>I have a Motorola radio that has an active low COS signal. I need 
>this to be an active high COS signal. Does anybody know how to build 
>a simple circuit that will invert the COS signal from a low to a 
>high signal?
>
>Thanks
>
>J
>
>
>
>
>
>
>
> 
>Yahoo! Groups Links
>
>
>
> 
>
>
>
>
>  
>





 
Yahoo! Groups Links



 










 
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:
http://docs.yahoo.com/info/terms/
 

RE: [Repeater-Builder] Inverting COS

[Eric Brownell]

Just like you, I've now failed to resist voicing my wish that you'd been
successful at resisting your comments.

How very rude! How about showing a little support to a probable newbie, eh?

Eric
  

-Original Message-
From: Neal Newman [mailto:[EMAIL PROTECTED] 
Sent: Tuesday, November 30, 2004 8:45 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Inverting COS


Sorry I cannot resist  this one..

 And you call yourself a Ham?
 My wife the Novice could  answer that question.
Basic Transistor theory..
even an op-amp inverter
 Her reply  isIf he does not know  how to invert the signal
 he should not be building a repeater...!

 Next question...

.
jay_kruckenberg wrote:

>I have a Motorola radio that has an active low COS signal. I need 
>this to be an active high COS signal. Does anybody know how to build 
>a simple circuit that will invert the COS signal from a low to a 
>high signal?
>
>Thanks
>
>J
>
>
>
>
>
>
>
> 
>Yahoo! Groups Links
>
>
>
> 
>
>
>
>
>  
>





 
Yahoo! Groups Links



 










 
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:
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