Go Back   iRV2 Forums > MOTORHOME FORUMS > MH-General Discussions & Problems
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  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 04-08-2007, 05:53 PM   #15
Senior Member
hamguy's Avatar
Workhorse Chassis Owner
Join Date: Nov 2003
Location: Mesa, AZ USA
Posts: 1,806
I don't understand why shortening the coax would change the SWR. At least any appreciable amount. Presuming the radio output impedance is 50 ohm nominal and the coax is 50 ohm nominal, the only hitch is the antenna. I am not sure you can alter or tune a Firestick.

But, in any event, the losses at even 1.8:1 SWR is practically nothing.

I worked about 80 countries on 10 and 15 meters with a 75 watt rig before I found out the rig was only 20 watts and my SWR was 4:1. After I got the true facts, I couldn't make a contact.

Wretched excess is just barely enough.

2002 Itasca Suncruiser - WH Chassis - 35U - 2006 Jeep Liberty
hamguy 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 04-08-2007, 06:03 PM   #16
Senior Member
GaryKD's Avatar
Newmar Owners Club
Join Date: Jul 2006
Location: Wellington, Florida
Posts: 12,534
Go to the Firestik WEB site mentioned in one of my earlier posts. All the instructions are there.

2005 Newmar KSDP 3910 + GMC ENVOY XUV 37K lbs Moving Down The Road
The Avatar Is Many Times Around The USA
Nobody Knows Your Coach Like Somebody Who Owns One Just Like Yours
GaryKD is offline   Reply With Quote
Old 04-09-2007, 10:26 AM   #17
Senior Member
alvinc's Avatar
Fleetwood Owners Club
Workhorse Chassis Owner
Join Date: Apr 2002
Location: Beaverton, OR, USA
Posts: 658
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by hamguy:

#4. What is a "no-ground plane antenna that is tip fed."

A little more information, please. </div></BLOCKQUOTE>In general, antennas can be base, center, or end(tip) fed. In the case of a vertical, a base fed antenna will connect the coax to the antenna at the base, a tip fed will connect the coax to the tip of the antenna.

The theory is that in situations where the antenna is partially blocked by air conditioners or is mounted on the side of a vehicle, a tip fed antenna will propagate better than a base fed antenna. Wish I knew how to support this. It is probably dependent on antenna construction and frequency. Hellllpppp. Just reporting what is advertised, which we know is always accurate.
2002 35R Southwind, W22 8.1L Vortec UltraPower, 19.5' wheels
Toad: Wrangler, lifted and on 35" tires
alvinc is offline   Reply With Quote
Old 04-10-2007, 07:15 AM   #18
Senior Member
hamguy's Avatar
Workhorse Chassis Owner
Join Date: Nov 2003
Location: Mesa, AZ USA
Posts: 1,806
OK, I unnerstand.

I have a Gap "Titan" and I believe it is tip loaded.

I talked to the owner of a screwdriver antenna company about their use on a Class A RV. He finally agreed that since the bulk of the antenna must be above the roofline, it was not suited to (in motion) RV optimal use.

I use a push-up fiberglass mast attached to the ladder and a wire wrapped around the length. I push up as much as I can run it through a automatic tuner. Works fairly well and when parked, I push it up to 33' where it works VERY well.

Wretched excess is just barely enough.

2002 Itasca Suncruiser - WH Chassis - 35U - 2006 Jeep Liberty
hamguy is offline   Reply With Quote

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
Wi-Fi antenna rvgrandma Technology: Internet, TV, Satellite, Cell Phones, etc. 15 04-16-2008 05:37 AM
TV Antenna gator67 Alpine Coach Owner's Forum 5 04-23-2007 06:41 AM
TV antenna Billy S RV Systems & Appliances 4 11-19-2006 02:52 PM
CB Antenna Karl Newmar Owner's Forum 9 05-11-2006 12:39 PM

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 04:48 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.