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/diy/ - Do It Yourself

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2044189 No.2044189 [Reply] [Original]

Is it possible to improve the antenna of an AM/FM radio by replacing the telescopic antenna with different type of antenna?

>> No.2044192

>>2044189
>Is it possible to improve the antenna of an AM/FM radio by replacing the telescopic antenna with different type of antenna?
Yes. Make sure you have the correct antenna length and it is grounded.

>> No.2044242

>>2044189

>FM
>around 100 MHz
>3 meter wavelenght

so you need a 10ft antenna

>> No.2044256
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2044256

>>2044242
No kidding. I have a spare one of this antenna and I am planning to connect it to my radio.

>> No.2044277

>>2044256
unless you know exactly where the radio transmitter is for the station you're looking for, that kind of antenna is going to nuke any and all reception you can get

>> No.2044286

>>2044277
>>2044256
not to leave you in the dark, that's a Yagi-Uda antenna which are designed to be very directional in nature.

>> No.2044824

>>2044256
That is a yagi antenna, it is directional. What that means that if it is not pointed in the direction of the station you are trying to listen to, you are going to hear nothing.

Also, if your radio does not have a dedicated external antenna port, hooking it up will be really janky. Part of a yagi antenna like that needs to be properly grounded. Specifically the rearmost two antennas, right behind the loop. Those are basically a "Reflector".

If you are really interested in fucking around with radio shit, get an RTL-SDR. They are a great jumping-off point and have proper antenna connectors that give you a real upgrade path.

If you just want to listen to a really far off station, I would recommend just attaching a wire to where the antenna should be on the radio, and getting it as high up as possible in a tree or something. Note that this would be only really useful for AM reception, not FM.

>> No.2044838

>>2044242
Actually the antenna should be 1/4 the wavelenght so 2.5 feet (same lenght as most antennas)

>> No.2045134
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2045134

>>2044824
my grandpa told me he once build a rotating Yagi with LP player parts and then ran wires from the roof so he could rotate the antenna on the roof for fine tuning.

>> No.2045147

>>2044838
half wavelenght is most efficient

>> No.2045327

>>2045134
based old HAM gramps

>> No.2045431

>>2044189
Just be aware that these are legally classified as an extendable baton in the UK and will soon be illegal to possess even in private.

https://www.gov.uk/government/publications/offensive-weapons-act-surrender-and-compensation-scheme

>> No.2045437

>>2044256
Those Yagi antennas are directional. I wouldn't recommend it, you'd have to set it up just right for it to pick up anything at all.

>> No.2045503

>>2045431
What the fuck

>> No.2045684

>>2044256
You want to use a Yagi-Uda for your radio? You know those things are completely directional, right? You'd have to know exactly where the broadcasting station is, set it up exactly right, and then never touch it (unless you wanted tune in to another station, in which case you'd need to reorient the whole thing all over again).

Not that it's impossible, but it's hardly a practical upgrade.

>> No.2045909

>not designing your own active electronically scanned array antenna and beam steering to whatever you're trying to listen to
fucking plebs

>> No.2045945

>>2044189
>Is it possible to improve the antenna of an AM/FM radio by replacing the telescopic antenna with different type of antenna?

AM? not really but you can inductively couple a larger tunable loop antenna.

FM adding a longer antenna may not help, in many cases adding an external antenna higher up might. also adding an external directional antenna (higher up might).

>> No.2047499

Put one Cu tube in conexion whit this.

This is very very good i prove this.

>> No.2047591

A lot of radio stations now stream what they're airing to the internet so you can listen to them even if you're not in signal range at all, all you need is access to a wifi or cellular network. While some can be streamed directly from the radio stations website, a lot of them can be found on iheartradio.
https://www.iheart.com/live/country/US/

>> No.2047599

>>2044189
alligator clip 10 feet of copper wire, increase length until it gets better or overloads. do not replace the whip antenna coz it will not help.

>> No.2047605

>>2044256
>a fucking yagi
Those are directional antennas, friend. you're gonna have a hell of a time using that regularly for a radio.

>> No.2047676

>>2047605
I'm glad you posted, he might have missed the 4 other times it's already been said.