Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.



263 posts

Ultimate Geek
+1 received by user: 7


Topic # 113865 30-Jan-2013 14:13 Send private message

Hey guys.

After playing around with our car stereo, I've decided I want to start looking into getting a DX Setup in the house.

Question is What type of Antenna do I need?

We are located in Henderson Valley, Waitakere and where we are for whatever reason, in the car we can receive a number of stations located outside of Auckland. For Example Classic Hits, from Whangarei, Hamilton, and Gold FM from the Coromandel, and Times FM from Rodney, and Many others.

The question is, almost none of them are receivable in the house, (Sometimes I get traces if I point the wire in the right direction) I'm putting it down to the fact that the Antenna wire is no where near strong enough to pick it up, since the transmitters are so far off.

We also can pick up quite clearly about 5-10km down the road, is Classic Hits from Taranaki, but I can't pick up a sniff of the signal at home, even with the car radio.

My ultimate goal is to pick this up at home.


So, I've decided to put some of my money together, and invest in a Roof Antenna setup for the sole purpose of FM Dxing.

The question is that since I am relatively new to the subject of FM dxing, I have no idea where to start looking for a decent Antenna for that purpose.

I want to keep my budget under $100 if possible.

I was looking at this one here. I was keen on this one. http://www.trademe.co.nz/electronics-photography/tvs/cables-aerials/auction-548636308.htm

However, it will still need to be pointed in the right direction and there's no point really if I have to climb on the roof to change the direction of the antenna, every time when f I want to pick up a signal in the opposite direction.

I was reading more on this, and I found this seller from the USA. http://www.fmdxantenna.com/proddetail.php?prod=FMDipUS#.UQh0zme5z1s

This one also looks like a good option, even if it gets shipped from the USA, it's still cheaper then trademe, if it works better. I'm just not sure on that one, because it looks smaller then the 5 element one.

Hope somebody can help me.

Thanks

Create new topic
Voice Engineer @ Orcon
1794 posts

Uber Geek
+1 received by user: 387

Trusted
Orcon
Subscriber

  Reply # 753276 30-Jan-2013 14:15 Send private message

Do you have a VHF antenna already on your roof?  Tried that?  I get brilliant FM reception from mine.



263 posts

Ultimate Geek
+1 received by user: 7


  Reply # 753281 30-Jan-2013 14:22 Send private message

ubergeeknz: Do you have a VHF antenna already on your roof?  Tried that?  I get brilliant FM reception from mine.


Unfortunately not, however I haven't ruled out buying one, because with all Freeview HD stuff on UHF, I'm sure many people have spare VHF antennas lying around.

1524 posts

Uber Geek
+1 received by user: 55


  Reply # 753322 30-Jan-2013 15:27 Send private message

ubergeeknz: Do you have a VHF antenna already on your roof?  Tried that?  I get brilliant FM reception from mine.


A VHF TV antenna is not ideal for FM Radio but just a compromise.
The ones shown on Trademe are purpose built for FM band Radio (88 - 108mhz) and the prices are reasonable. You'd be hard pushed to make your own for much less. Note also that FM polarisation is slant (45 degrees, right side down left side up from the back of the antenna looking at the transmitter) and neither vertical nor horizontal.
If you are really serious about FM DX then you would need a rotator.
See here
http://www.comcentre.co.nz/Amateur_Antennas.php
The G-250 is a TV antenna type rotator and would work fine although it is rather expensive and also no longer manufactured.
I have one I use for VHF (5 element 50mhz beam) and it works well.
The current price is nearly double what I paid for mine about 8 yrs ago.
The next model up (G-450) is not much more expensive and would handle much bigger antennas and wind loads. They can be purchased from USA suppliers for about half the local price.



Create new topic




Twitter »
Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:




News »

Trending now »
Hot discussions in our forums right now:

Warning: Rage Ahead - Campbell Live and childhood poverty
Created by kawaii, last reply by networkn on 2-Sep-2014 19:57 (112 replies)
Pages... 6 7 8


Does NZ need better gun laws?
Created by mattwnz, last reply by heylinb4nz on 2-Sep-2014 16:23 (104 replies)
Pages... 5 6 7


What tyre brand/model to look at ?
Created by Mark, last reply by Mark on 2-Sep-2014 21:16 (34 replies)
Pages... 2 3


VideoEZY OnDemand
Created by Andib, last reply by davidcole on 2-Sep-2014 20:10 (63 replies)
Pages... 3 4 5


Judith Collins: I am resigning
Created by Presso, last reply by gzt on 2-Sep-2014 11:42 (109 replies)
Pages... 6 7 8


Cirque du Soleil Cellphone Hijack
Created by myopinion, last reply by PhantomNVD on 1-Sep-2014 18:01 (21 replies)
Pages... 2


Orcon Global Mode launched
Created by freitasm, last reply by shk292 on 1-Sep-2014 11:32 (132 replies)
Pages... 7 8 9


Lightbox press event release
Created by freitasm, last reply by IcI on 30-Aug-2014 17:54 (562 replies)
Pages... 36 37 38



Geekzone Live »
Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.

Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.