It's been awhile but as I recall the cans were cut for a quarter wave and the
cables
a multiple of a quarter wave. Used the original coupling loops but put
something
around 6-10 pf glass piston trimmers in series for the reject capability.
Jack - N7OO
- Original Message -
From: k0jxi
To: Repeater-Builder@yahoogroups.com
Sent: Monday, August 04, 2008 5:04 AM
Subject: [Repeater-Builder] Re: Db4001 to 222
Thanks for the reply Jack. What you did is exactly what I am wanting
to do. What type of band reject scheme did you use? Did you save
any details on cables, etc?. The big question is what did you do to
modify the coupling loops?
73, Dale in Memphis-
-- In Repeater-Builder@yahoogroups.com, "Jack Taylor" <[EMAIL PROTECTED]>
wrote:
>
> I once cut down 4 VHF cavities for a BP/BR 222 duplexer. Fairly
straight forward but
> probably not worth the labor involved.
>
> Jack - N7OO
> - Original Message -
> From: k0jxi
> To: Repeater-Builder@yahoogroups.com
> Sent: Sunday, August 03, 2008 4:38 PM
> Subject: [Repeater-Builder] Db4001 to 222
>
>
> Had to repost this because of bad email typing
>
> Has anyone ever converted one of the DB Products 4001 highband
pass
> cavities to a 222 pass or pass notch cavity? I know DB makes or
made a
> 222 version of that mocel but wonder if it is feasible to cut one
down
> and make new loops. Appreciate any info. Please reply to
> [EMAIL PROTECTED]
>
> Thanks, Dale K0JXI
>
>
>
>
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8/3/2008 1:00 PM
>
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