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04-03-2007, 05:40 PM
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#1
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Member
Workhorse Chassis Owner
Join Date: Mar 2007
Posts: 69
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Any one having An SWR problem with the stock CB Antenna on the Fleetwood motorhomes mine is a 2007.
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07 Fleetwood Bounder 33R
Workhorse W-Series
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04-03-2007, 05:40 PM
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#2
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Member
Workhorse Chassis Owner
Join Date: Mar 2007
Posts: 69
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Any one having An SWR problem with the stock CB Antenna on the Fleetwood motorhomes mine is a 2007.
__________________
07 Fleetwood Bounder 33R
Workhorse W-Series
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04-03-2007, 11:29 PM
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#3
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Moderator Emeritus
Country Coach Owners Club Appalachian Campers Gulf Streamers Club
Join Date: Mar 2000
Location: Chattanooga, Tn.
Posts: 12,060
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Workhorse Dan,welcome to iRV2.com. We are glad to have you join us here and we look forward to reading of your adventures and experiences. Sorry I cannot answer your question but I am sure someone on this forum can. I will short cut this to the New Members section and see if we can attract some attention on this issue. Good luck and enjoy the website. Please keep us informed on the progress ou mak or if you have any other questions. Thanks
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Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7
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04-04-2007, 02:27 AM
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#4
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Senior Member
Join Date: Apr 2005
Location: Lower Alabama
Posts: 338
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Go here; maybe this will help:
CB Antenna Tuning
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regards,
Mahlon
Mad Scientist and Principal Operator of 2008 Newmar Ventana 3933
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04-04-2007, 09:22 AM
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#5
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Senior Member
Fleetwood Owners Club Workhorse Chassis Owner
Join Date: Apr 2002
Location: Beaverton, OR, USA
Posts: 658
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1. There is no such thing as a no-tune CB antenna. The characteristics of the radio affects the SWR, so the antenna has to be re-tuned when the radio changes.
2. If you can't get the antenna tuned with an acceptable SWR (2 or less) I would replace the antenna.
3. It is not clear to me that the pre-installed antennas are useful. An RV with fiberglass over wood walls (there is a metal frame but it doesn't count) and a rubber roof just does not have enough metal to make a decent ground plane. In addition, CB needs a pretty large ground plane.
4. The ideal antenna for a RV is a no-ground plane antenna that is tip fed. This allows mounting on the side of the RV and still get decent coverage.
__________________
Alvin/KB7VHI
2002 35R Southwind, W22 8.1L Vortec UltraPower, 19.5' wheels
Toad: Wrangler, lifted and on 35" tires
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04-04-2007, 03:48 PM
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#6
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Moderator Emeritus
Ford Super Duty Owner
Join Date: Aug 2000
Location: Bryan, TX when not traveling.
Posts: 22,945
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This tends not to be a Fleetwood exclusive problem,so I'm linking this thread over to the CB and Ham sub-forum for better exposure.
Also, welcome to IRV2.
Ken
__________________
Amateur Radio Operator (KE5DFR)|No Longer Full-Time! - 2023 Cougar 22MLS toted by 2022 F150, 3.5L EcoBoost Tow Max FX4 Lariat Travel with one Standard Schnauzer and one small Timneh African Gray Parrot, retired mechanical engineer
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04-04-2007, 06:10 PM
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#7
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Senior Member
Winnebago Owners Club
Join Date: Oct 2003
Location: Solon, Ohio USA
Posts: 424
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TXiceman,
What is the "CB and Ham sub forum", and how do I access it?
Thanks
W8RLM - Bob
__________________
2006 Winnebago Journey, Model 39K, 2013 Dodge Dart
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04-05-2007, 06:41 AM
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#8
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Moderator Emeritus
Nor'easters Club Workhorse Chassis Owner iRV2 No Limits Club
Join Date: Oct 2004
Posts: 30,785
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http://irv2.infopop.cc/eve/forums?a=...2&f=2241046292
Give the link a try and your there.
Notice the info at top and what forum your at.
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04-05-2007, 07:24 AM
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#9
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Moderator Emeritus
Ford Super Duty Owner
Join Date: Aug 2000
Location: Bryan, TX when not traveling.
Posts: 22,945
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Bob, scroll down to RV systems and Technologies. In that block is an underscored link for CB and Ham Radio.
Are you planning to make the National Rally in Branson (July 15 thru.....?)? We are planning to have a working Ham station there for some demonstrations of Ham radio.
Ken
__________________
Amateur Radio Operator (KE5DFR)|No Longer Full-Time! - 2023 Cougar 22MLS toted by 2022 F150, 3.5L EcoBoost Tow Max FX4 Lariat Travel with one Standard Schnauzer and one small Timneh African Gray Parrot, retired mechanical engineer
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04-05-2007, 12:51 PM
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#10
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Senior Member
Winnebago Owners Club
Join Date: Oct 2003
Location: Solon, Ohio USA
Posts: 424
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TXiceman,
Thanks - I've logged into the sub forum. I won't be at Branson, because I'll be at the Winnebago GNR.
W8RLM - Bob
__________________
2006 Winnebago Journey, Model 39K, 2013 Dodge Dart
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04-07-2007, 09:20 AM
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#11
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Senior Member
Workhorse Chassis Owner
Join Date: Nov 2003
Location: Mesa, AZ USA
Posts: 1,806
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by alvinc:
1. There is no such thing as a no-tune CB antenna. The characteristics of the radio affects the SWR, so the antenna has to be re-tuned when the radio changes.
2. If you can't get the antenna tuned with an acceptable SWR (2 or less) I would replace the antenna.
3. It is not clear to me that the pre-installed antennas are useful. An RV with fiberglass over wood walls (there is a metal frame but it doesn't count) and a rubber roof just does not have enough metal to make a decent ground plane. In addition, CB needs a pretty large ground plane.
4. The ideal antenna for a RV is a no-ground plane antenna that is tip fed. This allows mounting on the side of the RV and still get decent coverage.
</div></BLOCKQUOTE>
As to #1. Presuming the output impedance of the radio is 50 ohms, the radio has NO affect on the SWR.
#2. Actually 3:1 is atill not a bad SWR although some radios may begin to 'fold back' power over 2:1.
#3. Very true.
#4. What is a "no-ground plane antenna that is tip fed."
A little more information, please.
__________________
Wretched excess is just barely enough.
2002 Itasca Suncruiser - WH Chassis - 35U - 2006 Jeep Liberty
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04-07-2007, 03:27 PM
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#12
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Senior Member
Newmar Owners Club
Join Date: Jul 2006
Location: Wellington, Florida
Posts: 13,599
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I installed a Firestik no ground plane antenna kit. It works great. SWR is 40 = 1.8 and 1 = .4
Go here to see the kits.
On edit: One will need to go to the left side bar and click on the no ground plane kit of your choice. They have several kits. The one I purchased is the Molded Side Mount kit.
__________________
Gary
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
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04-08-2007, 11:34 AM
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#13
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Senior Member
Workhorse Chassis Owner
Join Date: Nov 2003
Location: Mesa, AZ USA
Posts: 1,806
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[QUOTE]Originally posted by GaryKD:
I installed a Firestik no ground plane antenna kit. It works great. SWR is 40 = 1.8 and 1 = .4
[QUOTE]
What does "SWR is 40 = 1.8 and 1 = .4" mean? I am not familiar with that terminology.
__________________
Wretched excess is just barely enough.
2002 Itasca Suncruiser - WH Chassis - 35U - 2006 Jeep Liberty
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04-08-2007, 05:14 PM
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#14
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Senior Member
Newmar Owners Club
Join Date: Jul 2006
Location: Wellington, Florida
Posts: 13,599
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40 is the channel and 1.8 is the reading on the SWR meter. 1 is the channel and .4 is the reading on the SWR meter. One should try to get the SWR reading the same on channel 1 and 40. I have shortened my Firestik antenna as much as I can. The only thing I can do to get the two readings closer to each other is shorten the antenna cable. Since both readings are okay I have chosen to leave well enough alone. Shortening an antenna cable is an adventure I choose not to take.
__________________
Gary
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
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