Mike,

 

I assume the purpose of the paint can is to act as a Faraday cage?  Is it
attached to the common-point ground system or left freestanding?

 

73,

 

Mike

WM4B

 

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Mike Morris WA6ILQ
Sent: Monday, May 04, 2009 5:19 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: desense question

 






At 06:07 AM 05/04/09, you wrote:
> >> The amp is a UHF PA off a mobile rig, and I needed about
> >> 50 feet of RG58U to attenuate the signal from the repeater
> >> into the amp module.
> >
> > Not good, probably better to bypass (not use) the 15 watt
> > amplifier and drive the external amp direct from the exciter.
>
> Not a thing wrong with using a length of coax as an attenuator if it's
>done right. Have used this technique often when a little attenuation is
>needed.
>
>Al, K9SI

Somewhere I've got a couple of photos of attenuators made from a paint
can with coil of coax inside it. A pair of hooded SO239s on the lid and
you're done. One is of a 5 gallon paint can, the other of a 1 gallon.

Mike



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