Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > RV SYSTEMS AND TECHNOLOGIES FORUMS > Technology: Internet, TV, Satellite, Cell Phones, etc.
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 12-05-2020, 06:16 PM   #1
Senior Member
 
VanDiemen23's Avatar
 
Join Date: Oct 2010
Posts: 1,460
OTA TV + AM/FM combiner and splitter

I'm sure someone knows the answer to this and despite being an RF guy, my Google-fu is failing me.

I am replacing a Winegard crank-up antenna with a Magnadyne saucer. Old tube TV and zenith converter box is going too.

The Magnadyne has an embedded AM/FM radio antenna - which is good, because the roof whip on my coach just won't stay up. There are two leads - an RG-59 for the TV and something thinner for the radio, with a standard radio push-in antenna connector.

Here's the problem - I cannot fish the radio antenna cable from its location up to the TV antenna - different compartments in the roof.

What I'm looking for is a combiner that will allow me to multiplex the radio signals onto the TV cable - you can do this with a common splitter/combiner but you lose the AM I believe.

Not that I really need the AM - nothing on it these days but sports, church, and political gasbags.

If I can get it all on that cable I can split it out again before the amplifier and use the old VCR connection to eventually get it to the radio.

I'm finding stuff for CBs, but nothing for this application.

Anybody else try this/have a solution? Has to be passive - no power in either location unless I could do phantom power up the cable.
VanDiemen23 is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 12-12-2020, 05:36 AM   #2
Senior Member
 
Winnebago Owners Club
Workhorse Chassis Owner
Join Date: May 2011
Location: Central, South Carolina
Posts: 357
Two different coaxial cables

The two cables have drastically different characteristics and can never be combined into one. You need to find an extension for the radio cable with matching connectors. Or make your own. The radio cable has the conventional shield around it, but the inside is a hollow tube with a thin wire running in it, in tech terms it has an air dielectric, whereas the TV cable has a solid or foamed dielectric and a fatter center wire. The two can not be combined into one cable their characteristic impedances are two far apart.
garyspang is offline   Reply With Quote
Old 12-30-2020, 06:49 PM   #3
Senior Member
 
VanDiemen23's Avatar
 
Join Date: Oct 2010
Posts: 1,460
They're both 50 ohm. I've use the same basic cable from VHF to 2GHz for years.

Gave up on trying to do this anyway. found a shark fin antenna online for six bucks, pulled the element out of it, 3d printed a base and a radome, back in business using the original cable.
VanDiemen23 is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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
37BA OTA Splitter Location TiffinUser Tiffin Owner's Forum 4 10-10-2020 10:13 AM
Winegard's Air360+ for OTA VS. Dish Wally OTA Tuner RJEV Technology: Internet, TV, Satellite, Cell Phones, etc. 7 08-15-2020 06:16 PM
Switching from three-way splitter to two-way splitter NanaJ Class A Motorhome Discussions 10 06-13-2018 10:42 AM
OTA Coax Splitter Location slabman Newmar Owner's Forum 9 04-29-2014 04:13 PM
Splitter/Combiner works but... HUGHP Technology: Internet, TV, Satellite, Cell Phones, etc. 7 07-29-2011 07:08 AM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 10:10 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.