Adapting a Car Antenna to an F coaxial - diyAudio
Go Back   Home > Forums > General Interest > Car Audio

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 9th February 2005, 06:38 AM   #1
diyAudio Member
 
Verse~Chorus's Avatar
 
Join Date: Jan 2005
Location: Sol3
Question Adapting a Car Antenna to an F coaxial

Hello folks,
this is my first real post ( I can tell you're thrilled).
My situation is that I have a CD changer box JVC with a FM modulator.
I wish to use an A/B switch to hook-up the car antenna and the FM mod output to, then out to the head unit. The problem is that the A/B switch is for coax cable ( I think it is called an "F" connector). So, I cut off the ends of a coax cable and put on Motorola (car antenna ends). My qusestion: can I do this? Will the JVC FM-modulator, and my head unit be "happy"?
Thank you in advance.
  Reply With Quote
Old 9th February 2005, 09:01 PM   #2
maylar is offline maylar  United States
diyAudio Member
 
Join Date: Jun 2003
Location: Connecticut
Should be OK.
__________________
dave
  Reply With Quote
Old 9th February 2005, 09:16 PM   #3
diyAudio Member
 
leadbelly's Avatar
 
Join Date: Dec 2002
Location: Calgary, Alberta
Why? Did you lose the antenna connector that came with the device? Why bother with a switch when a Y will do?
__________________
Aerodynamics are for people who can't build engines. Enzo Ferrari
  Reply With Quote
Old 13th February 2005, 12:51 PM   #4
diyAudio Member
 
Verse~Chorus's Avatar
 
Join Date: Jan 2005
Location: Sol3
Thanks mylar & leadbelly

my original concern was that the CD changer (JVC X-200RF) documentation said that the performance of FM would be degraded after passing through it's FM modulator. So, I want to use an A/B switch for the regular car antenna and the FM modulator from the CD changer. This way the car antenna would more or less gor directly to the radio, and hopefully not suffer degraded signal quality. I had not hooked it up yet to see if in fact the antenna signal would be worse off for going through the FM modulator or not -- I just believed the documentation. ..
leadbelly: I could not find a Y locally
Finally, the A/B switch is for a video game / VCR hook up with (I think ) are called "F" connections; but the car antenna has regular (Ithink) Motorola connections. So, I opened up the A/B box and there was not enough distance between the box wall and the actuall switch to solder in the Motorola connections. So, I adapted a coaxial cable instead. My worry (due to relative electronic ignorance) is will both components (the FM modulator, and the Alpine CDM-7833 head unit) have any electrical trouble with this setup? Also, will the signal suffer by going through the A/B switch (because it was designed for a different signal)?

Thank you for your patient input.
  Reply With Quote
Old 13th February 2005, 02:57 PM   #5
diyAudio Member
 
Join Date: Feb 2005
Location: Northeast PA
Why not go into the Alpine HU with an audio line level output? I think most of them have pre ins. The changer should have a pre out, if not, take a peak inside & find the feed to the FM modulator. Keeping the audio unmodulated will improve the signal quality dramatically. This is an issue that I have with the sat radio receivers, too.

The connectors on the switch are most likely “F” connectors. After you put a few on & get that solid center conductor stuck in your finger, you will know where the “F” comes from…

Be advised that the switch you are talking about is most probably not an isolated switch, which may cause issues with the sources & the HU. If you really have to do it this way, get a decent isolated A/B switch. A “Y” is not the best choice as it will feed both signals at once to your HU.
Good luck.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Adapting speakers with red/black wire connection to pc? varitek Parts 4 19th January 2007 12:47 AM
Adapting a Seas Odin for center channel jhmmdahl Multi-Way 1 30th December 2006 01:10 AM
adapting original passive crossover keyser Multi-Way 0 22nd February 2005 10:49 PM
adapting unreg PSU to Brian's boards Jimmy D. Chip Amps 11 7th January 2005 09:21 AM
Adapting the TLb for the Jordan JX-92s dana Multi-Way 6 7th August 2002 08:03 PM


New To Site? Need Help?

All times are GMT. The time now is 07:52 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2