Connection Question

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KJ4FWA

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I'm new to "non stock" antenna, I have a Yagi antenna with this connector



What type of adapter would I need in order to connect this to the back of the uniden 996T?


and for wits and giggles...

some form of antenna, I was told it was a Discone or ground to plane type? Any suggestions?


(there are 4 elements on the bottom, picture only shows 3)
 

Grog

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Paulsan said:
Is that an N connector or a TNC connector? I'm not sure.

Looks like an N to me, being on a yagi also points to that since a ton of those use them.

Ha, point, yagi, er, nevermind :wink:


The bottom is a groundplane antenna, that's the four lower radials which looks like it's actually an adaptor for a mobile antenna. With the double coil (not matching) I think that is an older AS antenna, one of the MON series. Or maybe a spectra?


edit, don't think it's an austen spectra now, must be one of the AS mon series but they are so hard to find info anymore.
 
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af5rn

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It's just your normal, run of the mill inline SO-239. It connects to the same PL-259 that comes standard on most transceiver coax, including CB coax. Like others said, all it takes is a screw on adapter from any Radio shack to convert it to BNC, and plug into your scanner.

I had that antenna once, about twenty years ago when it was brand new. It's the Antenna Specialist MON-57, I believe. It's badass. I received systems a hundred miles away easily. Even keyed up repeaters four counties away with a 4 watt walkie talkie. I wish they still made those.
 

N1BHH

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That is a ground plane antenna and the connector is an "N" connector, and a crimp on connector at that. There are many adapters are available. I have one of those antennas for swapping over to from a Larsen NMO-150/450/800 when I want to improve my low band reception. Bought it a long time ago and it's still a great antenna. Those elements you are talking about are actually radials, ground plane radials.
 

KJ4FWA

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I'll look for cableing at the adapters I need, thanks for all the information!
do you think I can get most of the stuff @ a local Radio Shack?
 

KJ4FWA

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another quick question, How high should I mound Either antenna? there's some trees around, should I get a mast or would they be ok Mounted on the roof?
 

kb2vxa

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Since when is an N connector screw in and that small? That's a TNC common to mobile antennas and that looks like a VHF/UHF dual band NMO mount with a radial adapter plate. Heck, I used to make them out of scrap metal and brazing rod.

Just use the appropriate adapter and better coax than that crappy RG-58U which is OK for short runs in the car but a long run on the base will lose more signal than you can shove into it. I use a TNC to F adapter and RG-6U quad shield CATV coax and it works just fine with an F to BNC adapter on the back of the scanner.

Oh, don't forget to tape the outdoor connection unless you want to get your scanner all wet. Heh, think I'm kidding? I hate to admit a fellow ham forgetting to seal a connector, he ended up with garden hose for a transmission line.

Hmmm, now I know why you call yourself Grog. I just KNEW there was something about your head all foamy like that. (;->)
 

KJ4FWA

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Well....I went to radiohack and got Diffrent connectors....tested it out on a friends scanner just to be sure and it's workin! Thanks y'all!
 
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