KB9VBR Slim Jim

sonm10

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Nov 19, 2016
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Location
Sauk Centre, Minnesota
Hello, i live in an apartment. i have been using a couple mfj 1724b as scanner antennas. im wanting to improve my antennas and have been looking at the kb9vbr slim jims, one for vhf and the other for uhf fed to a diplexer. My windows are 50" tall (48" counting blinds) and the vhf slim jim is 58" My question is are these decent antennas for scanner use and would the antenna hanging slightly below the window matter? (I really feel like the 1724s lack on vhf)
 

jonwienke

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Jul 18, 2014
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12,039
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VA
Slim jims are j-pole antennas tuned for a narrow frequency range, and aren't really suited for general scanning, where you're typically trying to receive multiple bands. You'll probably be better off with a discone on a speaker stand like this:

 

KOK5CY

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Joined
Jan 6, 2005
Messages
384
Location
Afton, Ok
I had 1 of those up at 15ft and it worked fine for the band's I listened to even 800 trunked and I was using rg6 . now I'm using a discone at the same height and using rg8x and my receiving has improved .
 

JoshuaHufford

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May 27, 2018
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Location
Jefferson City, Mo
I have one of his SlimJim antennas tuned to the railband, outside the performance is good, indoor it is not so great.

I've found indoors smaller antennas tuned to the frequency of interest work better such as a 1/4 wave or even a rubber duck as opposed to a large antennas. Just my own thought but I think the larger the antenna the more affected it is by items inside your house.
 
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