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R: N connectors-failures?



Hi All,

About N connectors performance (and others) read please
the ARRL "UHF/MICROWAVE Experimenters Manual"
Chapter 5 page 5-18 and you will be "surprised" !

73" de i8CVS Domenico


----- Original Message -----
From: Jon Ogden <na9d-2@speakeasy.net>
To: Stan <stan@capecod.com>; Greg LaHaie <greglh@gte.net>
Cc: <amsat-bb@AMSAT.Org>
Sent: Friday, January 10, 2003 6:26 AM
Subject: Re: [amsat-bb] N connectors-failures?


> on 1/9/03 8:00 PM, Stan at stan@capecod.com wrote:
>
> > Avoid the 2 part N's above 222 MHz
>
> I would disagree with this.  They are certainly fine up through UHF (heck,
> even PL-259s will work OK at 440 MHz!).  I wouldn't use them about 1 GHz
> though.
>
>
> >
> > Observe the impedance of the connector. Do not mate different impedance
> > connectors.
> > A 50 ohm male center pin is guaranteed to destroy a 75 ohm female pin.
>
> Oh yeah.  You are right there.  You can tell a 75 Ohm N Male because the
pin
> is very thing.  Harder to tell on the female.
>
> >
> > I use N connectors at legal limit at 222 MHz and below.
> > I will probably use a 7/16-DIN connector for the legal limit 902 and
> > 1296 MHz amps...
>
> I'd say that's probably overkill, certainly for 902.  Properly mated Ns
can
> handle a lot of power.  The 7/16 is getting popular with a lot of guys
even
> at HF.  It's just so large that it can be impractical.
>
> Good post, though Stan.  You hit the nail on the head.
>
> 73,
>
> Jon
> NA9D
>
> ----
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