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Looking to update older telescopic antenna to modern one (adapter?)

Vertigobubba

Jul 21, 2023
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Hi everyone,
Newbie here, and am hoping for some expert advice on antennas.
I have an AM/FM Radio with a telescopic antenna that I would like to replace with a spare ‘modern’ screw on antenna I have from a handheld scanner.
I have scoured the internet but cannot find any simple adapter for this. So my question is…
Is there an adapter that I can simply screw ‘in’ to the single screw antenna connector on the radio that will allow me to screw ‘on’ the other antenna?
I have attached pictures, I would really appreciate any advice or direction.
Radio.jpgAntenna.jpgThank you!!!
 

Delta Prime

Jul 29, 2020
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It's not really an update.
I really need dimensions. You have micrometer? short answer is yes,they have adapters. I'm guessing you have a helical antenna or what they call a rubber ducky.
Shown below is a male like you have so what you going to need is a female adapter.
They come in both sexes & anywhere in between. Hehe!
But if you could show me the bottom of your antenna I want to make sure there's not a center pin. If there is it's probably a mini UHF.
Screenshot_20230721_090814.jpg
 
Last edited:

kellys_eye

Jun 25, 2010
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The antenna you intend to fit doesn't allow for changes in length or orientation - factors that could be useful when trying to maximise signal strength and/or reducing interference.

Seems like a backward step to me.
 

Vertigobubba

Jul 21, 2023
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It more an esthetic thing, I currently have a 4ft antenna running up the wall of my den.
 

Vertigobubba

Jul 21, 2023
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It's not really an update.
I really need dimensions. You have micrometer? short answer is yes,they have adapters. I'm guessing you have a helical antenna or what they call a rubber ducky.
Shown below is a male like you have so what you going to need is a female adapter.
They come in both sexes & anywhere in between. Hehe!
But if you could show me the bottom of your antenna I want to make sure there's not a center pin. If there is it's probably a mini UHF.
View attachment 59943
antenna.jpg2mm.jpg
 

Vertigobubba

Jul 21, 2023
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Hi,
Thank you for responding, and my apologies, new guy to this. And correct, not really an upgrade, more for esthetics as I have a 4ft antenna running up the wall in my den.
I do not have a micrometer, sorry. But the internal fit width of the antenna is 2mm (pic attached).
The radio is a Realistic DX-440, I cannot find any spec’s (even in the manual) about the size of the antenna connection. I do not have a micrometer, sorry.
The antenna I hope to fit to it is an SMA Female (Standard), pic added.
Does this help?
 

bertus

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Nov 8, 2019
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Hello,

It looks like the shown antenna can only be used for the FM-band of your radio.
It will do almost nothing on the LW, MW and AM bands on the radio.

Also the shown antenna uses a SMA connector , wich has a signal and ground connection and not a screw-on.

Bertus
 

Vertigobubba

Jul 21, 2023
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Thank you! Strange though, I took if off my scanner when I got a longer one and it worked fine there. Thank you, I will research further.
 

bertus

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Nov 8, 2019
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Hello,

Has the radio an other input for an antenna connection?
Then you could build an active antenna and connect that,

Bertus
 

bertus

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Nov 8, 2019
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Hello,

That look like a tulip connecor, also known as a RCA connector.
Then you could make a simple active antenna like in the folowing schematic:
hf_active_antenna_using_cmos.png

I have used it in combination with an old TRIO HF receiver.

Bertus
 

Bluejets

Oct 5, 2014
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Thing is.....the new antenna will have (at best) possibly only 30mm of antenna length.
 

Delta Prime

Jul 29, 2020
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Thank you! Strange though, I took if off my scanner when I got a longer one and it worked fine there. Thank you, I will research further
Research never hurts but you have already proven it it does work. Therefore... here is your reward enjoy!
 

Attachments

  • Realistic_DX-440_user.pdf
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Delta Prime

Jul 29, 2020
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This is an male to male RCA coupler.
Also known as an RCA dual male connector & last but not least
RCA male to male adapter.
I just called them RCA barrels.



Screenshot_20230721_175705.jpg
 
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